Properti sistem yang didukung

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Halaman ini mencantumkan properti sistem yang didukung di VHAL. Properti yang didukung oleh VHAL harus berupa properti sistem dari daftar di bawah atau properti vendor. Di Android 14 dan yang lebih tinggi, definisi properti ditentukan di hardware/interfaces/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/VehicleProperty.aidl.

Definisi properti ditentukan di antarmuka AIDL, android.hardware.automotive.vehicle.property, yang terpisah dari antarmuka VHAL (android.hardware.automotive.vehicle). Implementasi VHAL dan klien VHAL harus bergantung pada kedua antarmuka.

Mode akses dan mode perubahan yang dibuat secara otomatis

Di Android 14 dan yang lebih tinggi, untuk mendukung implementasi VHAL, kami menyediakan file header C++ dan file class Java yang dibuat secara otomatis dengan mode perubahan atau mode akses yang diizinkan untuk properti sistem. Implementasi VHAL vendor dapat menggunakannya untuk memastikan konfigurasi properti memenuhi spesifikasi.

A ke D

ADAPTIVE_CRUISE_CONTROL_LEAD_VEHICLE_MEASURED_DISTANCE

Measured distance from leading vehicle when using Adaptive Cruise Control (ACC) or Predictive Cruise Control (PCC). Returns the measured distance in millimeters between the rear-most point of the leading vehicle and the front-most point of the ACC vehicle. The maxInt32Value and minInt32Value in VehicleAreaConfig must be defined. The minInt32Value should be 0. The maxInt32Value should be populated with the maximum range the distance sensor can support. This value should be non-negative.

When no lead vehicle is detected (that is, when there is no leading vehicle or the leading vehicle is too far away for the sensor to detect), this property should return StatusCode.NOT_AVAILABLE

When this property is not available because CC is disabled (for example, StatusCode#NOT_AVAILABLE_DISABLED is false), this property must return StatusCode#NOT_AVAILABLE_DISABLED If CRUISE_CONTROL_STATE is implemented and the state is set to an ErrorState value, then this property must return a StatusCode that aligns with the ErrorState value. For example, if CRUISE_CONTROL_STATE is set to ErrorState#NOT_AVAILABLE_SPEED_LOW, then this property must return StatusCode#NOT_AVAILABLE_SPEED_LOW

Change mode: CONTINUOUS
Access mode: READ
Enum type: N/A
Unit type: VehicleUnit:MILLIMETER
Release: Android 14

ADAPTIVE_CRUISE_CONTROL_TARGET_TIME_GAP

Current target time gap for ACC or PCC in milliseconds. This property should specify the target time gap to a leading vehicle. This gap is defined as the time to travel the distance between the leading vehicle's rear-most point to the ACC vehicle's front-most point. The actual time gap from a leading vehicle can be above or below this value.

The possible values to set for the target time gap should be specified in configArray in ascending order. All values must be positive. If the property is writable, all values must be writable. When this property is not available because CC is disabled (for example, CRUISE_CONTROL_ENABLED is false), this property must return StatusCode#NOT_AVAILABLE_DISABLED

If CRUISE_CONTROL_STATE is implemented and the state is set to an ErrorState value, then this property must return a StatusCode that aligns with the ErrorState value. For example, if CRUISE_CONTROL_STATE is set to ErrorState#NOT_AVAILABLE_SPEED_LOW, then this property must return StatusCode#NOT_AVAILABLE_SPEED_LOW

This property is defined as VehiclePropertyAccess.READ_WRITE, but OEMs can implement it as VehiclePropertyAccess.READ only.

Change mode: ON_CHANGE
Access mode: READ_WRITE/READ
Enum type: N/A
Unit type: VehicleUnit:MILLI_SECS
Release: Android 14

ABS_ACTIVE

The automatic brake system (ABS) is active. Set to true when ABS is active and reset to false when ABS is off. This property can be intermittently set (pulse) based on the real-time state of the ABS system.

Change mode: ON_CHANGE
Access mode: READ
Enum type: N/A
Unit type: N/A
Release: Android 13

ANDROID_EPOCH_TIME

Current date and time, encoded as Epoch time (in milliseconds). This value denotes the number of milliseconds seconds that have elapsed since 1/1/1970 UTC.

This value denotes the number of milliseconds seconds that have elapsed since 1/1/1970 UTC. CarServices WRITEs to this value to give VHAL the Android system's time, if the VHAL supports this property. This can be useful to synchronize other vehicle systems (dash clock) with Android's time.

AAOS WRITEs to this property once during boot, and thereafter WRITE only when time-source changes are propagated. AAOS will fill in VehiclePropValue.timestamp correctly. AAOS does not send updates for natural elapse of time. int64Values[0] = provided Unix time (in milliseconds).

The property may take more than 0 ms to get propagated through the stack and, having a timestamped property helps reduce any time drift. So, for all WRITEs to the property, the timestamp can be used to negate this drift:

drift = elapsedTime - PropValue.timestamp effectiveTime = PropValue.value.int64Values[0] + drift

Change mode: ON_CHANGE
Access mode: WRITE
Enum type: N/A
Unit type: VehicleUnit:MILLI_SECS
Release: Android 13

AP_POWER_BOOTUP_REASON

Property to report bootup reason for the current power on. This is a STATIC property that won't change for the whole duration until power off. For example, even if the user presses the power button after automatic power on with door unlock, the bootup reason must stay with VehicleApPowerBootupReason#USER_UNLOCK int32Values[0] must be VehicleApPowerBootupReason

Change mode: STATIC
Access mode: READ
Enum type: N/A
Unit type: N/A
Release: Android 13

AP_POWER_STATE_REPORT

Property to report power state of app processor. It is assumed that AP's power state is controller by separate power controller.

• int32Values[0] VehicleApPowerStateReport enum value
• int32Values[1] Time in ms to wake up, if necessary (otherwise 0)

Change mode: ON_CHANGE
Access mode: READ_WRITE
Enum type: N/A
Unit type: N/A
Release: Android 13

AP_POWER_STATE_REQ

Property to control power state of app processor. It is assumed that AP's power state is controlled by a separate power controller. For configuration information, VehiclePropConfig.configArray must have bit flag combining values in VehicleApPowerStateConfigFlag

• int32Values[0] VehicleApPowerStateReq enum value
• int32Values[1] Aadditional parameter relevant for each state, 0 if not used.

Change mode: ON_CHANGE
Access mode: READ
Enum type: N/A
Unit type: N/A
Release: Android 13

AUTOMATIC_EMERGENCY_BRAKING_ENABLED

Enable or disable Automatic Emergency Braking (AEB). Set true to enable AEB and false to disable AEB. When AEB is enabled, the ADAS system in the vehicle should be turned on and monitoring to avoid potential collisions. This property should apply for higher speed applications only. For enabling low speed automatic emergency braking, LOW_SPEED_AUTOMATIC_EMERGENCY_BRAKING_ENABLED should be used.

In general, AUTOMATIC_EMERGENCY_BRAKING_ENABLED should always return true or false. If the feature is not available due to some temporary state, such as the vehicle speed being too low, that information must be conveyed through the ErrorState values in the AUTOMATIC_EMERGENCY_BRAKING_STATE property.

This property is defined as VehiclePropertyAccess.READ_WRITE, but OEMs can implement it as VehiclePropertyAccess.READ only.

Change mode: ON_CHANGE
Access mode: READ_WRITE/READ
Enum type: N/A
Unit type: N/A
Release: Android 14

AUTOMATIC_EMERGENCY_BRAKING_STATE

Automatic Emergency Braking (AEB) state. Returns the current state of AEB. This property must always return a valid state defined in AutomaticEmergencyBrakingState or ErrorState It must not surface errors through StatusCode and must use the supported error states instead. This property should apply for higher speed applications only. For representing the state of the low speed automatic emergency braking system, LOW_SPEED_AUTOMATIC_EMERGENCY_BRAKING_STATE should be used.

If AEB includes forward collision warnings before activating the brakes, those warnings must be surfaced through the Forward Collision Warning (FCW) properties.

For the global area ID (0), the StatusCode#VehicleAreaConfig#supportedEnumValues array must be defined unless all states of both AutomaticEmergencyBrakingState (including OTHER, which is not recommended) and ErrorState are supported.

Change mode: ON_CHANGE
Access mode: READ
Enun type: ForwardCollisionWarningState/ErrorState
Unit type: N/A
Release: Android 14

BLIND_SPOT_WARNING_ENABLED

Enable and disable Blind Spot Warning (BSW). Set true to enable BSW and false to disable BSW. When BSW is enabled, the ADAS system in the vehicle should be turned on and monitoring for objects in the vehicle's blind spots.

In general, BLIND_SPOT_WARNING_ENABLED should always return true or false. If the feature is not available due to some temporary state, such as the vehicle speed being too low, that information must be conveyed through the ErrorState values in the BLIND_SPOT_WARNING_STATE property.

This property is defined as VehiclePropertyAccess.READ_WRITE, but OEMs can implement it as VehiclePropertyAccess.READ only.

Change mode: ON_CHANGE
Access mode: READ_WRITE/READ
Enum type: N/A
Unit type: N/A
Release: Android 14

BLIND_SPOT_WARNING_STATE

Blind Spot Warning (BSW) state. Returns the current state of BSW. This property must always return a valid state defined in BlindSpotWarningState or ErrorState It must not surface errors through StatusCode and must use the supported error states instead.

For each supported area ID, StatusCode#VehicleAreaConfig#supportedEnumValues array must be defined unless all states of both BlindSpotWarningState (including OTHER, which is not recommended) and ErrorState are supported.

Change mode: ON_CHANGE
Access mode: READ
Enum type: BlindSpotWarningState/ErrorState
Unit type: N/A
Release: Android 14

CABIN_LIGHTS_STATE

Returns the state for the cabin lights.

Change mode: ON_CHANGE
Access mode: READ
Enum type: VehicleLightState
Unit type: N/A
Release: Android 13

CABIN_LIGHTS_SWITCH

Cabin lights switch. The position of the physical switch which controls the cabin lights. This might differ than the CABIN_LIGHTS_STATE if the lights are on because a door is open or because of a voice command. For example, when the switch is in the off or automatic position.

This property is defined as VehiclePropertyAccess.READ_WRITE, but OEMs can implement it as VehiclePropertyAccess.READ only.

Change mode: ON_CHANGE
Access mode: READ_WRITE/READ
Enum type: VehicleLightSwitch
Unit type: N/A
Release: Android 13

CLUSTER_DISPLAY_STATE

Changes the state of the cluster display.

• Bounds: Area to render the cluster Activity.
• Inset: Area that Activity should not place important information.

Possible values:

• int32[0] On, Off: 0 - off, 1 - on, -1 - don't care
• int32[1] Bounds - left: positive number - left position in pixels -1 - don't care (should set all Bounds fields)
• int32[2] Bounds - top: same format with 'left'
• int32[3] Bounds - right: same format with 'left'
• int32[4] Bounds - bottom: same format with 'left'
• int32[5] Inset - left: positive number - actual left inset value in pixels -1 - don't care (should set "don't care" all Inset fields)
• int32[6] Inset - top: same format with 'left'
• int32[7] Inset - right: same format with 'left'
• int32[8] Inset - bottom: same format with 'left'

Change mode: ON_CHANGE
Access mode: READ
Enum type: N/A
Unit type: N/A
Release: Android 13

CLUSTER_NAVIGATION_STATE

Informs the current navigation state. bytes: the serialized message of NavigationStateProto.

Change mode: ON_CHANGE
Access mode: WRITE
Enum type:
Unit type: N/A
Release: Android 13

CLUSTER_REPORT_STATE

Reports the current display state and ClusterUI state. ClusterHome sends this message when it handles CLUSTER_SWITCH_UI, CLUSTER_DISPLAY_STATE In addition, ClusterHome should send this message when it starts for the first time. When ClusterOS receives this message and if the internal expectation is different with the received message, then it should send CLUSTER_SWITCH_UI, CLUSTER_DISPLAY_STATE again to match the state.

• int32[0] on/off: 0 - off, 1 - on
• int32[1] Bounds - left
• int32[2] Bounds - top
• int32[3] Bounds - right
• int32[4] Bounds - bottom
• int32[5] Inset - left
• int32[6] Inset - top
• int32[7] Inset - right
• int32[8] Inset - bottom
• int32[9] Type of ClusterUI in the fullscreen or main screen. 0 indicates ClusterHome. Other values are followed by the OEM's definition.
• int32[10] Type of ClusterUI in subscreen if the currently two UIs are shown. -1 indicates the area is no longer used. bytes: the array to represent the availability of ClusterUI. 0 indicates non-available and 1 indicates available. For example, if a car supports three OEM-defined ClusterUI such as HOME, MAPS, and CALL and only supports the CALL UI only when the cellular network is available. Then, if the nework is available, it sends [1 1 1] and, if out of network, sends [1 1 0].

Change mode: ON_CHANGE
Access mode: WRITE
Enum type: VehicleLightSwitch
Unit type: N/A
Release: Android 13

CLUSTER_REQUEST_DISPLAY

Requests to change the cluster display state to show some ClusterUI. When the current display state is off and ClusterHome sends this message to ClusterOS to request to turn the display on to show a specific ClusterUI. ClusterOS should response this with CLUSTER_DISPLAY_STATE

• int32 Type of ClusterUI to show

Change mode: ON_CHANGE
Access mode: WRITE
Enum type: N/A
Unit type: N/A
Release: Android 13

CLUSTER_SWITCH_UI

Starts the ClusterUI in cluster display.

• int32 Type of ClusterUI to show 0 indicates ClusterHome, the Home screen of the cluster display, and provides the default UI and a kind of launcher functionality for the cluster display. Other values are per the OEM's definition.

Change mode: ON_CHANGE
Access mode: READ
Enum type: N/A
Unit type: N/A
Release: Android 13

CREATE_USER

Called by the Android System after an Android user was created. The HAL can use this property to create its equivalent user. This is an async request: Android makes the request by setting a VehiclePropValue, and HAL must respond with a property change indicating whether the request succeeded or failed. If it failed, the Android system removes the user.

The format of the request is defined by CreateUserRequest and the format of the response by CreateUserResponse. For example, if system had two users (0 and 10) and a third one (which is an ephemeral guest) was created, the request would be:

• int32[0] 42 // request id
• int32[1] 11 // Android id of the created user
• int32[2] 6 // Android flags (ephemeral guest) of the created user
• int32[3] 10 // current user
• int32[4] 0 // current user flags (none)
• int32[5] 3 // number of users
• int32[6] 0 // first user (user 0)
• int32[7] 0 // first user flags (none)
• int32[8] 10 // second user (user 10)
• int32[9] 0 // second user flags (none)
• int32[10] 11 // third user (user 11)
• int32[11] 6 // third user flags (ephemeral guest) string: "ElGuesto" // name of the new user

If the request succeeded, the HAL returns:

• int32[0] 42 // request id
• int32[1] 1 // CreateUserStatus::SUCCESS

But if it fails:

• int32[0] 42 // request id
• int32[1] 2 // CreateUserStatus::FAILURE string: "D'OH!" //

The meaning is a blackbox and is passed to the caller (such as the Settings UI), which takes the proper action.

Change mode: ON_CHANGE
Access mode: READ_WRITE
Enum type: N/A
Unit type: N/A
Release: Android 13

CRITICALLY_LOW_TIRE_PRESSURE

This property indicates the critically low pressure threshold for each tire. It indicates when it to replace or to fix a tire. The value must be less than or equal to minFloatValue in TIRE_PRESSURE. The minimum and maximum property values (minFloatValue and maxFloatValue) do not apply to this property.

Change mode: STATIC
Access mode: READ
Enum type: N/A
Unit type: VehicleUnit:KILOPASCAL
Release: Android 13

CRUISE_CONTROL_COMMAND

WRITE Cruise Control (CC) commands. See CruiseControlCommand for the details about each supported command. For the global area ID (0), the StatusCode#VehicleAreaConfig#supportedEnumValues array must be defined unless all states of CruiseControlState are supported. Any unsupported commands sent through this property must return StatusCode#INVALID_ARG When this property is not available because CC is disabled (for example, CRUISE_CONTROL_ENABLED is false), this property must return StatusCode#NOT_AVAILABLE_DISABLED If CRUISE_CONTROL_STATE is implemented and the state is set to an ErrorState value, then this property must return a StatusCode that aligns with the ErrorState value. For example, if CRUISE_CONTROL_STATE is set to ErrorState#NOT_AVAILABLE_SPEED_LOW, then this property must return StatusCode#NOT_AVAILABLE_SPEED_LOW

Change mode: ON_CHANGE
Access mode: WRITE
Enum type: CruiseControlCommand
Unit type: N/A
Release: Android 14

CRUISE_CONTROL_ENABLED

Enable or disable cruise control (CC). Set true to enable CC and false to disable CC. This property is shared by all forms of CruiseControlType(s). When CC is enabled, the ADAS system in the vehicle should be turned on and responding to commands. In general, CRUISE_CONTROL_ENABLED should always return true or false. If the feature is not available due to some temporary state, such as the vehicle speed being too low, that information must be conveyed through the ErrorState values in the CRUISE_CONTROL_STATE property. This property is defined as VehiclePropertyAccess.READ_WRITE, but OEMs can implement it as VehiclePropertyAccess.READ only.

Change mode: ON_CHANGE
Access mode: READ_WRITE/READ
Enum type: N/A
Unit type: N/A
Release: Android 14

CRUISE_CONTROL_STATE

Current state of Cruise Control (CC). This property returns the current state of CC. Generally, this property should return a valid state defined in the CruiseControlState or ErrorState For example, if the feature is not available due to some temporary state, that information should be conveyed through ErrorState For the global area ID (0), the VehicleAreaConfig#supportedEnumValue array must be defined unless all states of CruiseControlState (including OTHER, which is not recommended) and ErrorState are supported.

Change mode: ON_CHANGE
Access mode: READ
Enum type: CruiseControlState/ErrorState
Unit type: N/A
Release: Android 14

CRUISE_CONTROL_TARGET_SPEED

Current target speed for Cruise Control (CC). OEMs should set the minFloatValue and maxFloatValue values for this property to define the min and max target speed values. These values must be non-negative. The maxFloatValue represents the upper bound of the target speed. The minFloatValue represents the lower bound of the target speed. When this property is not available because CC is disabled (for example, CRUISE_CONTROL_ENABLED is false), this property must return StatusCode#NOT_AVAILABLE_DISABLED If CRUISE_CONTROL_STATE is implemented and the state is set to an ErrorState value, then this property must return a StatusCode that aligns with the ErrorState value. For example, if CRUISE_CONTROL_STATE is set to ErrorState#NOT_AVAILABLE_SPEED_LOW, then this property must return StatusCode#NOT_AVAILABLE_SPEED_LOW

Change mode: ON_CHANGE
Access mode: READ
Enum type: N/A
Unit type: VehicleUnit:METER_PER_SEC
Release: Android 14

CRUISE_CONTROL_TYPE

Current type of Cruise Control (CC). When CRUISE_CONTROL_ENABLED is true, this property returns the type of CC that is currently enabled (for example, standard CC and adaptive CC, predictive). enerally, this property should return a valid state defined in the CruiseControlType or ErrorState For example, if the feature is not available due to some temporary state, that information should be conveyed through ErrorState For the global area ID (0), the StatusCode#VehicleAreaConfig#supportedEnumValues array must be defined unless all states of CruiseControlType (including OTHER, which is not recommended) and ErrorState are supported. Trying to WRITE CruiseControlType#OTHER or an ErrorState to this property throws an IllegalArgumentException This property is defined as VehiclePropertyAccess.READ_WRITE, but OEMs can implement it as VehiclePropertyAccess.READ only.

Change mode: ON_CHANGE
Access mode: READ_WRITE/READ
Enum type: CruiseControlType ErrorState
Unit type: N/A
Release: Android 14

CURRENT_GEAR

Current gear. In a non-manual case, the selected gear might not match the current gear. For example, if the selected gear is GEAR_DRIVE, the current gear will be one of GEAR_1, GEAR_2 and so on, which reflects the actual gear the transmission is running in. Values in the config data must represent the list of supported gears for this vehicle. For example, config data for an automatic transmission must contain {GEAR_NEUTRAL, GEAR_REVERSE, GEAR_PARK, GEAR_1, GEAR_2,...} and, for manual transmission, the list must be {GEAR_NEUTRAL, GEAR_REVERSE, GEAR_1, GEAR_2,...} This list need not be the same as that of the supported gears reported in GEAR_SELECTION

Change mode: ON_CHANGE
Access mode: READ
Enum type: VehicleGear
Unit type: N/A
Release: Android 13

CURRENT_POWER_POLICY

Notifies the current power policy to VHAL layer. Car power policy service sets this property when the current power policy is changed

string: "sample_policy_id" // power policy ID

Change mode: ON_CHANGE
Access mode: READ_WRITE
Enum type: N/A
Unit type: N/A
Release: Android 13

DISABLED_OPTIONAL_FEATURES

Allow the disabling of optional features in VHAL. This property reports optional features that should be disabled. All allowed optional features for the system is declared in the Car service overlay, config_allowed_optional_car_features This property allows disabling features defined in the overlay. Without this property, all features declared in the overlay will be enabled. Value READ should include all features disabled with a comma (,) separation. For example, com.android.car.user.CarUserNoticeService,storage_monitoring

Change mode: STATIC
Access mode: READ
Enum type: N/A
Unit type: N/A
Release: Android 13

DISPLAY_BRIGHTNESS

Property to represent brightness of the display. Some cars have a single control for the brightness of all displays. This property is to share changes in that control. In cars that have displays whose brightness is controlled separately, they must use PER_DISPLAY_BRIGHTNESS Only one of DISPLAY_BRIGHTNESS and PER_DISPLAY_BRIGHTNESS should be implemented. If both are available, PER_DISPLAY_BRIGHTNESS is used by AAOS. If this is writable, Android can set this value when the user changes display brightness from Settings. If this is READ-only, user can still change display brightness from Settings, but the change must not be reflected on other displays.

Change mode: ON_CHANGE
Access mode: READ_WRITE
Enum type: N/A
Unit type: N/A
Release: Android 13

DISTANCE_DISPLAY_UNITS

Distance units for display. Indicates which units the car is using to display distances to the user. For example, Mile, Meter, or Kilometer. Distance units are defined in VehicleUnit. VehiclePropConfig.configArray is used to indicate the supported distance display units. For example, configArray[0] = METER configArray[1] = KILOMETER configArray[2] = MILE If updating DISTANCE_DISPLAY_UNITS affects the values of other *_DISPLAY_UNITS properties, then their values must be updated and communicated to the AAOS framework, too. This property is defined as VehiclePropertyAccess.READ_WRITE, but OEMs can implement it as VehiclePropertyAccess.READ only.

Change mode: ON_CHANGE
Access mode: READ_WRITE/READ
Enum type: VehicleUnit
Unit type: N/A
Release: Android 13

DOOR_CHILD_LOCK_ENABLED

Door child lock feature enabled. Returns true if the door child lock feature is enabled and false if disabled. If enabled, the door can't be opened from the inside. This property is defined as VehiclePropertyAccess.READ_WRITE, but OEMs can implement it as VehiclePropertyAccess.READ only.

Change mode: ON_CHANGE
Access mode: READ_WRITE/READ
Enum type: N/A
Unit type: N/A
Release: Android 14

DOOR_LOCK

Door lock true indicates the door is locked. This property is defined as VehiclePropertyAccess.READ_WRITE, but OEMs can implement it as VehiclePropertyAccess.READ only.

Change mode: ON_CHANGE
Access mode: READ_WRITE/READ
Enum type: N/A
Unit type: N/A
Release: Android 13

DOOR_MOVE

The maxInt32Value and minInt32Value in each VehicleAreaConfig must be defined. All integers between minInt32Value and maxInt32Value must be supported. The maxInt32Value represents the maximum movement speed of the door while opening. The minInt32Value represents the maximum movement speed of the door while closing.

Larger absolute values, either positive or negative, indicate a faster movement speed. Once the door reaches the positional limit, the value must reset to 0. If the value of DOOR_MOVE is 0, then that means there is no movement currently occurring.

This property is not in any particular unit but in a specified range of relative movement speeds.

This property is defined as VehiclePropertyAccess.READ_WRITE, but OEMs can implement it as VehiclePropertyAccess.READ only.

Change mode: ON_CHANGE
Access mode: READ_WRITE/READ
Enum type: N/A
Unit type: N/A
Release: Android 13

DOOR_POS

Door position. The maxInt32Value and minInt32Value in VehicleAreaConfig must be defined. All integers between minInt32Value and maxInt32Value must be supported. The minInt32Value indicates the door is closed. The minInt32Value must be 0. The maxInt32Value indicates the door is fully open. Values between minInt32Value and maxInt32Value indicate a transition state between the closed and fully open positions.

This property is not in any particular unit but in a specified range of relative positions. Some vehicles (minivans) can open the door electronically. Hence, the ability to WRITE this property. This property is defined as VehiclePropertyAccess READ_WRITE, but OEMs can implement it as VehiclePropertyAccess.READ only.

Change mode: ON_CHANGE
Access mode: READ_WRITE/READ
Enum type: N/A
Unit type: N/A
Release: Android 13

E ke G

ELECTRONIC_TOLL_COLLECTION_CARD_STATUS

Electronic Toll Collection card status. This property indicates the status of ETC card in this vehicle. If the head unit is aware of an ETC card attached to the vehicle, ELECTRONIC_TOLL_COLLECTION_CARD_TYPE gives that status of the card. Otherwise, this property should be UNAVAILABLE

Change mode: ON_CHANGE
Access mode: READ
Enum type: ElectronicTollCollectionCardStatus
Unit type: N/A
Release: Android 13

ELECTRONIC_TOLL_COLLECTION_CARD_TYPE

Electronic Toll Collection (ETC) card type. This property indicates the type of ETC card in this vehicle. If the head unit is aware of an ETC card attached to the vehicle, this property should return the type of card attached; otherwise, this property should be UNAVAILABLE

Change mode: ON_CHANGE
Access mode: READ
Enum type: ElectronicTollCollectionCardType
Unit type: N/A
Release: Android 13

EMERGENCY_LANE_KEEP_ASSIST_ENABLED

Enable or disable Emergency Lane Keep Assist (ELKA). Set true to enable ELKA and false to disable ELKA. When ELKA is enabled, the ADAS system in the vehicle should be on and monitoring for unsafe lane changes by the driver. When an unsafe maneuver is detected, ELKA alerts the driver and applies steering corrections to keep the vehicle in its original lane. In general, EMERGENCY_LANE_KEEP_ASSIST_ENABLED should always return true or false. If the feature is not available due to some temporary state, such as the vehicle speed being too low, that information must be conveyed through the ErrorState values in the EMERGENCY_LANE_KEEP_ASSIST_STATE property. This property is defined as VehiclePropertyAccess.READ_WRITE, but OEMs can implement it as VehiclePropertyAccess.READ only.

Change mode: ON_CHANGE
Access mode: READ_WRITE/READ
Enum type: N/A
Unit type: N/A
Release: Android 14

EMERGENCY_LANE_KEEP_ASSIST_STATE

Emergency Lane Keep Assist (ELKA) state. Returns the current state of ELKA. Generally, this property should return a valid state defined in the EmergencyLaneKeepAssistState or ErrorState For example, if the feature is not available due to some temporary state, that information should be conveyed through ErrorState For the global area ID (0), the VehicleAreaConfig#supportedEnumValues array must be defined unless all states of EmergencyLaneKeepAssistState (including OTHER, which is not recommended) and ErrorState are supported.

Change mode: ON_CHANGE
Access mode: READ
Enum type: EmergencyLaneKeepAssistState/ErrorState
Unit type: N/A
Release: Android 14

ENGINE_COOLANT_TEMP

Temperature of engine coolant.

Change mode: CONTINUOUS
Access mode: READ
Enum type: N/A
Unit type: VehicleUnit:CELSIUS
Release: Android 13

ENGINE_IDLE_AUTO_STOP_ENABLED

Represents feature for engine idle automatic stop. If true, the vehicle may automatically shut off the engine when it is not needed and then automatically restart it when needed. This property is defined as VehiclePropertyAccess.READ_WRITE, but OEMs can implement it as VehiclePropertyAccess.READ only.

Change mode: ON_CHANGE
Access mode: READ_WRITE/READ
Enum type: N/A
Unit type: N/A
Release: Android 14

ENGINE_OIL_LEVEL

Engine oil level.

Change mode: ON_CHANGE
Access mode: READ
Enum type: VehicleOilLevel
Unit type: N/A
Release: Android 13

ENGINE_OIL_TEMP

Temperature of engine oil.

Change mode: CONTINUOUS
Access mode: READ
Enum type: N/A
Unit type: VehicleUnit:CELSIUS
Release: Android 13

ENGINE_RPM

Engine revolutions per minute (RPM).

Change mode: CONTINUOUS
Access mode: READ
Enum type: N/A
Unit type: VehicleUnit:RPM
Release: Android 13

ENV_OUTSIDE_TEMPERATURE

Outside temperature. This property must communicate the temperature reading of the environment outside the vehicle. If there are multiple sensors for measuring the outside temperature, this property should be populated with the mean or a meaningful weighted average of the readings that best represent the temperature of the outside environment.

Change mode: CONTINUOUS
Access mode: READ
Enum type: N/A
Unit type: VehicleUnit:CELSIUS
Release: Android 13

EV_BATTERY_DISPLAY_UNITS

EV battery units for display. Indicates which units the car is using to display EV battery information to the user. For example, watt-hours (Wh), kilowatt-hours (kWh) or ampere-hours (Ah). VehiclePropConfig.configArray is used to indicate the supported electrical energy. units. Electrical energy units are defined in VehicleUnit For example:

  configArray[0] = WATT_HOUR configArray[1] = AMPERE_HOURS configArray[2] = KILOWATT_HOUR

If updating EV_BATTERY_DISPLAY_UNITS affects the values of other *_DISPLAY_UNITS properties, then their values must be updated and communicated to the AAOS framework as well. This property is defined as VehiclePropertyAccess.READ_WRITE, but OEMs can implement it as VehiclePropertyAccess.READ only.

Change mode: ON_CHANGE
Access mode: READ_WRITE/READ
Enum type: VehicleUnit
Unit type: N/A
Release: Android 13

EV_BATTERY_INSTANTANEOUS_CHARGE_RATE

EV instantaneous charge rate in milliwatts. A positive value indicates the battery is being charged. A negative value indicates the battery being discharged.

Change mode: CONTINUOUS
Access mode: READ
Enum type: N/A
Unit type: VehicleUnit:MW
Release: Android 13

EV_BATTERY_LEVEL

Returns the current battery level, whether EV or hybrid. This value will not exceed EV_CURRENT_BATTERY_CAPACITY To calculate the battery percentage, use (EV_BATTERY_LEVEL, EV_CURRENT_BATTERY_CAPACITY)*100.

Change mode: CONTINUOUS
Access mode: READ
Enum type: N/A
Unit type: VehicleUnit:WH
Release: Android 13

EV_BRAKE_REGENERATION_LEVEL

Regenerative braking level of a electronic vehicle. The maxInt32Value and minInt32Value in VehicleAreaConfig must be defined. All values between minInt32Value and maxInt32Value must be supported. The minInt32Value must be 0. The maxInt32Value indicates the setting for the maximum amount of energy regenerated from braking. The minInt32Value indicates the setting for no regenerative braking. This property is a more granular form of EV_REGENERATIVE_BRAKING_STATE It allows the user to set a more specific level of regenerative braking if the states in EvRegenerativeBrakingState are not granular enough for the OEM. This property is defined as VehiclePropertyAccess.READ_WRITE, but OEMs can implement it as VehiclePropertyAccess.READ only.

Change mode: ON_CHANGE
Access mode: READ_WRITE/READ
Enum type: N/A
Unit type: N/A
Release: Android 13

EV_CHARGE_CURRENT_DRAW_LIMIT

Indicates the maximum current draw threshold for charging set by the user. EvChargeState::configArray[0] is used to specify the max current draw allowed by the vehicle in Amperes. This property is defined as VehiclePropertyAccess.READ_WRITE, but OEMs can implement it as VehiclePropertyAccess.READ only.

Change mode: ON_CHANGE
Access mode: READ_WRITEREAD
Enum type: N/A
Unit type: VehicleUnit:AMPERE
Release: Android 13

EV_CHARGE_PERCENT_LIMIT

Indicates the maximum charge percent threshold set by the user. Indicates the maximum charge percent threshold set by the user. Returns a float value from 0 to 100. configArray is used to specify the valid values. For example, if the vehicle supports the following charge percent limit values: [20, 40, 60, 80, 100] then the configArray should be {20, 40, 60, 80, 100} If the configArray is empty then all values from 0 to 100 must be valid. This property is defined as VehiclePropertyAccess.READ_WRITE, but OEMs can implement it as VehiclePropertyAccess.READ only.

Change mode: ON_CHANGE
Access mode: READ_WRITE,, READ
Enum type: N/A
Unit type: N/A
Release: Android 13

EV_CHARGE_PORT_CONNECTED

EV charge port connected. If the vehicle has multiple charging ports, this property must return true when any of the charge ports are connected.

Change mode: ON_CHANGE
Access mode: READ
Enum type: N/A
Unit type: N/A
Release: Android 13

EV_CHARGE_PORT_OPEN

EV charge port open. If the vehicle has multiple charging ports, this property must return true if any of the charge ports are open. This property is defined as VehiclePropertyAccess.READ_WRITE, but OEMs can implement it as VehiclePropertyAccess.READ only.

Change mode: ON_CHANGE
Access mode: READ_WRITEREAD
Enum type: N/A
Unit type: N/A
Release: Android 13

EV_CHARGE_STATE

Charging state of the car Returns the current charging state of the car. If the vehicle has a target charge percentage other than 100, this property must return EvChargeState::STATE_FULLY_CHARGED when the battery charge level has reached the target level. See EvChargeState::EV_CHARGE_PERCENT_LIMIT for more context.

Change mode: ON_CHANGE
Access mode: READ
Enum type: EvChargeState
Unit type: N/A
Release: Android 13

EV_CHARGE_SWITCH

Start or stop charging the EV battery. The setting wanted by the user. Setting this property to true starts the battery charging, and false to stop charging. This property is defined as VehiclePropertyAccess.READ_WRITE, but OEMs can implement it as VehiclePropertyAccess.READ only.

Change mode: ON_CHANGE
Access mode: READ_WRITEREAD
Enum type: N/A
Unit type: N/A
Release: Android 13

EV_CHARGE_TIME_REMAINING

Estimated charge time remaining in seconds. Returns 0 if the vehicle is not charging.

Change mode: CONTINUOUS
Access mode: READ
Enum type: N/A
Unit type: VehicleUnit:SECS
Release: Android 13

EV_CURRENT_BATTERY_CAPACITY

Current usable battery capacity for and EV or hybrid vehicle. Returns the actual value of battery capacity, when EV or hybrid. This property captures the real-time usable battery capacity taking into account factors such as battery aging and temperature dependency. This value might differ from INFO_EV_BATTERY_CAPACITY because INFO_EV_BATTERY_CAPACITY returns the nominal battery capacity from when the vehicle was new.

Change mode: ON_CHANGE
Access mode: READ
Enum type: N/A
Unit type: VehicleUnit:WH
Release: Android 14

EV_REGENERATIVE_BRAKING_STATE

Regenerative braking or one-pedal drive setting of the car. Returns the current setting associated with the regenerative braking setting in the car. If the OEM requires more setting than those provided in EvRegenerativeBrakingState, the EV_BRAKE_REGENERATION_LEVEL property can be used instead, which provides more granular information.

Change mode: ON_CHANGE
Access mode: READ
Enum type: EvRegenerativeBrakingState
Unit type: N/A
Release: Android 13

EV_STOPPING_MODE

Represents property for the current stopping mode of the vehicle. For the global area ID (0), the VehicleAreaConfig#supportedEnumValues must be defined unless all enum values of EvStoppingMode are supported. The EvStoppingMode enum may be extended to include more states in the future. This property is defined as VehiclePropertyAccess.READ_WRITE, but OEMs have the option to implement it as VehiclePropertyAccess.READ only.

Change mode: ON_CHANGE
Access mode: READ_WRITE/READ
Enum type: EvStoppingMode
Unit type: N/A
Release: Android 14

EVS_SERVICE_REQUEST

Enable and request an EVS service. The property provides a way to trigger EVS services. The VHAL should use this property to request Android to start or stop EVS service.

• int32Values[0] Type of EVS service. The value must be and enum in EvsServiceType.
• int32Values[1] State of the EVS service. The value must be one of enums in EvsServiceState.

For example, to enable rear view EVS service, Android can set the property value as:

[EvsServiceType::REAR_VIEW, EvsServiceState::ON]

Change mode: ON_CHANGE
Access mode: READ
Enum type: N/A
Unit type: N/A
Release: Android 13

EXTERNAL_CAR_TIME

Current date and time suggestion for the cr, encoded as Epoch time (in milliseconds). This value denotes the number of milliseconds seconds that have elapsed since 1/1/1970 UTC. This property signals a change in CarTime to Android. If the property is supported, VHAL must report the most accurate current CarTime when this property is read, and publish a change to this property when the CarTime value has changed.

An on-change event for this property must be published when CarTime changes for any reason other than the natural elapse of time (time delta smaller than 500ms should not trigger an on change event). Android will read and subscribe to this property to fetch time from VHAL. This can be useful to synchronize Android's time with other vehicle systems (dash clock). int64Values[0] = provided Epoch time (in milliseconds) Whenever a new Value for the property is received, AAOS creates and sends an ExternalTimeSuggestion to the TimeDetectorService.

If other sources do not have a higher priority, Android will use this to set the system time. For information on how to adjust time source priorities and how time suggestions are handled (including how Android handles gitter, drift, and minimum resolution), see the Time Detector Service documentation.

drift = elapsedTime - PropValue.timestamp effectiveTime = PropValue.value.int64Values[0] + drift

We strongly recommend that this propertynot be used to retrieve time from ECUs using protocols (such as GNSS, NTP, and Telephony). Since these protocols are already supported by Android, we recommend you use Android systems instead of wiring through the VHAL with this property.

Change mode: ON_CHANGE
Access mode: READ
Enum type: N/A
Unit type: VehicleUnit:MILLI_SECS
Release: Android 13

FOG_LIGHTS_STATE

Fog light state. Return the current state of fog lights. If the:

• Car has front and rear fog lights. Front and rear fog lights can only be controlled together. FOG_LIGHTS_STATE must be implemented. FRONT_FOG_LIGHTS_STATE and REAR_FOG_LIGHTS_STATE must not be implemented.
• Front and rear fog lights can only be controlled independently. FOG_LIGHTS_STATE must not be implemented and FRONT_FOG_LIGHTS_STATE and REAR_FOG_LIGHTS_STATE must be implemented.
• Car has only front fog lights. Only one of FOG_LIGHTS_STATE or FRONT_FOG_LIGHTS_STATE must be implemented (not both). REAR_FOG_LIGHTS_STATE must not be implemented.
• Car has only rear fog lights. Only one of FOG_LIGHTS_STATE or REAR_FOG_LIGHTS_STATE must be implemented (not both). FRONT_FOG_LIGHTS_STATE must not be implemented.

Change mode: ON_CHANGE
Access mode: READ
Enum type: VehicleLightState
Unit type: N/A
Release: Android 13

FOG_LIGHTS_SWITCH

Fog light switch. The setting wanted by the user. If the:

• Car has both front and rear fog lights. If front and rear fog lights can only be controlled together, FOG_LIGHTS_SWITCH must be implemented. FRONT_FOG_LIGHTS_SWITCH and REAR_FOG_LIGHTS_SWITCH must not be implemented.
• Front and rear fog lights can only be controlled independently. FOG_LIGHTS_SWITCH must not be implemented. FRONT_FOG_LIGHTS_SWITCH and REAR_FOG_LIGHTS_SWITCH must be implemented.
• Car has only front fog lights. Only one of FOG_LIGHTS_SWITCH or FRONT_FOG_LIGHTS_SWITCH must be implemented (not both). REAR_FOG_LIGHTS_SWITCH must not be implemented.
• Car has only rear fog lights. Only one of FOG_LIGHTS_SWITCH or REAR_FOG_LIGHTS_SWITCH must be implemented (and not both). FRONT_FOG_LIGHTS_SWITCH must not be implemented.

This property is defined as VehiclePropertyAccess.READ_WRITE, but OEMs can implement it as VehiclePropertyAccess.READ only.

Change mode: ON_CHANGE
Access mode: READ_WRITE/READ
Enum type: VehicleLightSwitch
Unit type: N/A
Release: Android 13

FORWARD_COLLISION_WARNING_ENABLED

Enable or disable Forward Collision Warning (FCW). Set to true to enable FCW and false to disable FCW. When FCW is enabled, the ADAS system in the vehicle should be turned on and monitoring for potential collisions. In general, FORWARD_COLLISION_WARNING_ENABLED should always return true or false. If the feature is not available due to some temporary state, such as the vehicle speed being too low, that information must be conveyed through the ErrorState values in the FORWARD_COLLISION_WARNING_STATE property.

This property is defined as VehiclePropertyAccess.READ_WRITE, but OEMs can implement it as VehiclePropertyAccess.READ only.

Change mode: ON_CHANGE
Access mode: READ_WRITE/READ
Enum type: N/A
Unit type: N/A
Release: Android 14

FORWARD_COLLISION_WARNING_STATE

Forward Collision Warning (FCW) state. Returns the current state of FCW. This property must always return a valid state defined in ForwardCollisionWarningState or ErrorState It must not surface errors through StatusCode and must use the supported error states instead. For the global area ID (0), the VehicleAreaConfig#supportedEnumValues array must be defined unless all states of both ForwardCollisionWarningState (including OTHER, which is not recommended) and ErrorState are supported.

Change mode: ON_CHANGE
Access mode: READ
Enun type: ForwardCollisionWarningState/ErrorState
Unit type: N/A
Release: Android 14

FRONT_FOG_LIGHTS_STATE

Front fog lights state. Returns the current state of the front fog lights. Only one of FOG_LIGHTS_STATE or FRONT_FOG_LIGHTS_STATE must be implemented. Refer to the documentation on FOG_LIGHTS_STATE for more information.

Change mode: ON_CHANGE
Access mode: READ
Enum type: VehicleLightState
Unit type: N/A
Release: Android 13

FRONT_FOG_LIGHTS_SWITCH

Front fog lights switch. The setting wanted by the user. Only one of FOG_LIGHTS_SWITCH or FRONT_FOG_LIGHTS_SWITCH must be implemented. Refer to the documentation on FOG_LIGHTS_SWITCH for more information.

This property is defined as VehiclePropertyAccess.READ_WRITE, but OEMs can implement it as VehiclePropertyAccess.READ only.

Change mode: ON_CHANGE
Access mode: READ_WRITE/READ
Enum type: VehicleLightSwitch
Unit type: N/A
Release: Android 13

FUEL_CONSUMPTION_UNITS_DISTANCE_OVER_VOLUME

Fuel consumption units for display. Indicates type of units the car is using to display fuel consumption information to user True indicates units are distance over volume such as MPG. False indicates units are volume over distance such as L/100KM. This property is defined as VehiclePropertyAccess.READ_WRITE, but OEMs can implement it as VehiclePropertyAccess.READ only.

Change mode: ON_CHANGE
Access mode: READ_WRITE/READ
Enum type: N/A
Unit type: N/A
Release: Android 13

FUEL_DOOR_OPEN

Fuel door open. This property must communicate if the fuel door on the vehicle is open or not. This property does not apply to EVs. That is, if INFO_FUEL_TYPE only contains FuelType::FUEL_TYPE_ELECTRIC, this property must not be implemented. For EVs, implement EV_CHARGE_PORT_OPEN. This property is defined as VehiclePropertyAccess.READ_WRITE but OEMs can implement it as VehiclePropertyAccess.READ only.

Change mode: ON_CHANGE
Access mode: READ_WRITE/READ
Enum type: N/A
Unit type: N/A
Release: Android 13

FUEL_LEVEL

Fuel remaining in the vehicle, in milliliters. This property must communicate the current amount of fuel remaining in the vehicle in milliliters. This property does not apply to electric vehicles. That is, if INFO_FUEL_TYPE only contains FuelType::FUEL_TYPE_ELECTRIC, this property must not be implemented. For EVs, implement EV_BATTERY_LEVEL Value can not exceed INFO_FUEL_CAPACITY

Change mode: CONTINUOUS
Access mode: READ
Enum type: N/A
Unit type: VehicleUnit:MILLILITER
Release: Android 13

FUEL_LEVEL_LOW

Warning for fuel low level. This property corresponds to the low fuel warning on the dashboard. Once FUEL_LEVEL_LOW is set, it should not be cleared until more fuel is added to the vehicle. This property can account for all fuel sources in a vehicle. For example, in a:

• Gas-powered vehicle, this property is based solely on gas level.
• Battery powered vehicle, this property is based only on battery level.
• Hybrid vehicle, this property may can based on a combination of gas and battery levels, at the OEM's discretion.

Change mode: ON_CHANGE
Access mode: READ
Enum type: N/A
Unit type: N/A
Release: Android 13

FUEL_VOLUME_DISPLAY_UNITS

Fuel volume units for display. Indicates which units the car is using to display fuel volume to the user. For example, Liter or Gallon. VehiclePropConfig.configArray is used to indicate the supported fuel volume display units. Volume units are defined in VehicleUnit For example, configArray[0] = LITER configArray[1] = GALLON If updating FUEL_VOLUME_DISPLAY_UNITS affects the values of other *_DISPLAY_UNITS properties, then their values must be updated and communicated to the AAOS framework, too. This property is defined as VehiclePropertyAccess.READ_WRITE, but OEMs can implement it as VehiclePropertyAccess.READ only.

Change mode: ON_CHANGE
Access mode: READ_WRITE/READ
Enum type: VehicleUnit
Unit type: N/A
Release: Android 13

GEAR_SELECTION

The gear selected by the user. Values in the config data must represent the list of supported gears for this vehicle. For example, config data for an automatic transmission must contain {GEAR_NEUTRAL, GEAR_REVERSE, GEAR_PARK, GEAR_DRIVE, GEAR_1, GEAR_2,...} and for manual transmission the list must be {GEAR_NEUTRAL, GEAR_REVERSE, GEAR_1, GEAR_2,...} For an automatic transmission vehicle that allows the driver to select specific gears on demand (for example, manual mode), the value for GEAR_SELECTION must be set to the specific gear selected by the driver instead of GEAR_DRIVE

Change mode: ON_CHANGE
Access mode: READ
Enum type: VehicleGear
Unit type: N/A
Release: Android 13

GENERAL_SAFETY_REGULATION_COMPLIANCE_REQUIREMENT

EU's General security regulation compliance requirement. Returns a value to indicate if general security regulation compliance is required and, if so, the type of requirement.

Change mode: STATIC
Access mode: READ
Enum type: GsrComplianceRequirementType
Unit type: N/A
Release: Android 14

GLOVE_BOX_DOOR_POS

Property that represents the current position of the glove box door. The maxInt32Value and minInt32Value in VehicleAreaConfig must be defined. All integers between minInt32Value and maxInt32Value must be supported. The minInt32Value indicates that the glove box door is closed. The minInt32Value must be 0. The maxInt32Value indicates that the glove box door is in the fully open position. Values in between minInt32Value and maxInt32Value indicate a transition state between the closed and fully open positions.

This property is not in any particular unit but in a specified range of relative positions. The area ID must match the seat by which the glove box is intended to be used. For example if the front right dashboard has a glove box embedded in it, then the area ID should be SEAT_1_RIGHT

This property is defined as VehiclePropertyAccess.READ_WRITE, but OEMs can implement it as VehiclePropertyAccess.READ only.

Change mode: ON_CHANGE
Access mode: READ_WRITE/READ
Enum type: N/A
Unit type: N/A
Release: Android 14

GLOVE_BOX_LOCKED

Lock or unlock the glove box. If true, the glove box is locked. If false, the glove box is unlocked. The area ID must match the seat by which the glove box is intended to be used. For example, if the front right dashboard has an embedded glove box embedded, then the area ID should be VehicleAreaSeat#ROW_1_RIGHT

This property is defined as VehiclePropertyAccess.READ_WRITE, but OEMs can implement it as VehiclePropertyAccess.READ only.

Change mode: ON_CHANGE
Access mode: READ_WRITE/READ
Enum type: N/A
Unit type: N/A
Release: Android 14

H hingga I

HANDS_ON_DETECTION_DRIVER_STATE

Status driver Deteksi Tangan di Setir (HOD). Menampilkan apakah tangan pengemudi berada di roda kemudi. Umumnya, properti ini akan menampilkan status yang valid yang ditentukan dalam HandsOnDetectionDriverState atau ErrorState. Misalnya, jika fitur tidak tersedia karena beberapa status sementara, informasi tersebut harus disampaikan melalui ErrorState Jika kendaraan ingin mengirim peringatan kepada pengguna karena tangan pengemudi telah berada di luar kemudi terlalu lama, peringatan harus ditampilkan melalui HANDS_ON_DETECTION_WARNING Untuk ID area global (0), array VehicleAreaConfig#supportedEnumValues harus ditentukan kecuali jika semua status HandsOnDetectionDriverState (termasuk OTHER, yang tidak direkomendasikan) dan ErrorState didukung.

Mode perubahan: ON_CHANGE
Mode akses: READ
Jenis enum: HandsOnDetectionDriverState/ErrorState
Jenis unit: T/A
Rilis: Android 14

HANDS_ON_DETECTION_ENABLED

Mengaktifkan atau menonaktifkan Deteksi Sentuhan Tangan (HOD). Tetapkan ke true untuk mengaktifkan HOD dan false untuk menonaktifkan HOD. Saat HOD diaktifkan, sistem di dalam kendaraan harus memantau keberadaan tangan pengemudi di setir dan mengirim peringatan jika mendeteksi bahwa tangan pengemudi tidak lagi berada di setir. Secara umum, HANDS_ON_DETECTION_ENABLED harus selalu menampilkan benar atau salah.

Jika fitur tidak tersedia karena beberapa status sementara, informasi tersebut harus disampaikan melalui nilai ErrorState di properti HANDS_ON_DETECTION_STATE. Properti ini ditentukan sebagai minInt32Value VehiclePropertyAccess.READ_WRITE, tetapi OEM dapat menerapkannya hanya sebagai VehiclePropertyAccess.READ.

Mode perubahan: ON_CHANGE
Mode akses: READ_WRITE/READ
Jenis enum: T/A
Jenis unit: T/A
Rilis: Android 14

HANDS_ON_DETECTION_WARNING

Peringatan Hands On Detection (HOD). Menampilkan apakah peringatan dikirim ke pengemudi karena tangannya tidak berada di kemudi dalam durasi yang terlalu lama. Umumnya, properti ini akan menampilkan status yang valid yang ditentukan dalam HandsOnDetectionWarning atau ErrorState Misalnya, jika fitur tidak tersedia karena beberapa status sementara, informasi tersebut harus disampaikan melalui ErrorState Untuk ID area global (0), array VehicleAreaConfig#supportedEnumValues harus ditentukan kecuali jika semua status HandsOnDetectionWarning (termasuk OTHER, yang tidak direkomendasikan) dan ErrorState didukung.

Mode perubahan: ON_CHANGE
Mode akses: READ
Jenis enum: HandsOnDetectionWarning/ErrorState
Jenis unit: T/A
Rilis: Android 14

HAZARD_LIGHTS_STATE

Status lampu hazard. Menampilkan status lampu hazard saat ini.

Mode perubahan: ON_CHANGE
Mode akses: READ
Jenis enum: VehicleLightState
Jenis unit: T/A
Rilis: Android 13

HAZARD_LIGHTS_SWITCH

Tombol lampu hazard. Setelan yang diinginkan pengguna. Properti ini ditentukan sebagai VehiclePropertyAccess.READ_WRITE, tetapi OEM hanya dapat menerapkannya sebagai VehiclePropertyAccess.READ.

Mode perubahan: ON_CHANGE
Mode akses: READ_WRITE/READ
Jenis enum: VehicleLightSwitch
Jenis unit: T/A
Rilis: Android 13

HEADLIGHTS_STATE

Status lampu depan. Menampilkan status lampu depan saat ini.

Mode perubahan: ON_CHANGE
Mode akses: READ
Jenis enum: VehicleLightState
Jenis unit: T/A
Rilis: Android 13

HEADLIGHTS_SWITCH

Tombol lampu depan. Setelan yang diinginkan pengguna. Properti ini ditentukan sebagai VehiclePropertyAccess.READ_WRITE, tetapi OEM hanya dapat menerapkannya sebagai VehiclePropertyAccess.READ.

Mode perubahan: ON_CHANGE
Mode akses: READ_WRITE/READ
Jenis enum: VehicleLightSwitch
Jenis unit: T/A
Rilis: Android 13

HIGH_BEAM_LIGHTS_STATE

Status lampu utama. Menampilkan status lampu utama saat ini.

Mode perubahan: ON_CHANGE
Mode akses: READ
Jenis enum: VehicleLightState
Jenis unit: T/A
Rilis: Android 13

HIGH_BEAM_LIGHTS_SWITCH

Sakelar lampu utama. Setelan yang diinginkan pengguna. Properti ini ditentukan sebagai VehiclePropertyAccess.READ_WRITE, tetapi OEM hanya dapat menerapkannya sebagai VehiclePropertyAccess.READ.

Mode perubahan: ON_CHANGE
Mode akses: READ_WRITE/READ
Jenis enum: VehicleLightSwitch
Jenis unit: T/A
Rilis: Android 13

HVAC_AC_ON

Mengaktifkan dan menonaktifkan AC untuk areaId yang ditentukan. Properti ini ditentukan sebagai VehiclePropertyAccess.READ_WRITE, tetapi OEM dapat menerapkannya sebagai VehiclePropertyAccess.READ

Mode perubahan: ON_CHANGE
Mode akses: READ_WRITE/READ
Jenis enum: T/A
Jenis unit: T/A
Rilis: Android 13

HVAC_ACTUAL_FAN_SPEED_RPM

Kecepatan kipas sebenarnya.

Mode perubahan: ON_CHANGE
Mode akses: READ
Jenis enum: T/A
Jenis unit: T/A
Rilis: Android 13

HVAC_AUTO_ON

Mengaktifkan dan menonaktifkan kontrol suhu otomatis. Jika benar, kontrol suhu otomatis aktif. Jika salah (false), kontrol iklim otomatis nonaktif. Jika kendaraan tidak mendukung penonaktifan kontrol iklim otomatis secara langsung, OEM harus menambahkan logika dalam penerapan VHAL mereka untuk menetapkan HVAC_AUTO_ON ke salah (false), yang mengubah setelan HVAC yang diperlukan untuk menonaktifkan HVAC_AUTO_ON secara tidak langsung. Idealnya, hal ini tidak akan mengganggu pengguna. OEM harus mengembalikan setelan apa pun yang diubah saat kontrol iklim otomatis nonaktif ke status sebelumnya. Dengan cara ini, satu-satunya hasil yang akan diperoleh adalah HVAC_AUTO_ON nonaktif. Jika tidak dapat memulihkan setelan HVAC ke setelan sebelumnya, OEM harus menerapkan perubahan yang paling tidak mengganggu.

Mode perubahan: ON_CHANGE
Mode akses: READ_WRITE/READ
Jenis enum: T/A
Jenis unit: T/A
Rilis: Android 13

HVAC_AUTO_RECIRC_ON

Resirkulasi otomatis aktif atau nonaktif. Jika resirkulasi otomatis aktif, sistem HVAC dapat beralih secara otomatis ke mode resirkulasi jika kendaraan mendeteksi kualitas udara masuk yang buruk. Properti ini ditentukan sebagai VehiclePropertyAccess.READ_WRITE, tetapi OEM hanya dapat menerapkannya sebagai VehiclePropertyAccess.READ.

Mode perubahan: ON_CHANGE
Mode akses: READ_WRITE/READ
Jenis enum: T/A
Jenis unit: T/A
Rilis: Android 13

HVAC_DEFROSTER

Pemanas berbasis kipas untuk jendela yang ditentukan. Properti ini ditentukan sebagai VehiclePropertyAccess.READ_WRITE, tetapi OEM dapat menerapkannya sebagai VehiclePropertyAccess.READ

Mode perubahan: ON_CHANGE
Mode akses: READ_WRITE/READ
Jenis enum: T/A
Jenis unit: T/A
Rilis: Android 13

HVAC_DUAL_ON

Mengaktifkan pengaitan suhu antar-area. AreaIDs untuk properti HVAC_DUAL_ON harus berisi kombinasi HVAC_TEMPERATURE_SET AreaIDs yang dapat digabungkan bersama-sama. Jika HVAC_TEMPERATURE_SET dipetakan ke AreaIDs[a_1, a_2, ..., a_n] dan jika HVAC_DUAL_ON dapat diaktifkan untuk menggabungkan a_i dan a_j, maka properti HVAC_DUAL_ON harus dipetakan ke [a_i | a_j]. Selain itu, jika a_k dan a_l juga dapat digabungkan secara terpisah, maka HVAC_DUAL_ON harus dipetakan ke [a_i | a_j, a_k | a_l]. Misalnya, mobil memiliki dua kursi depan (ROW_1_LEFT dan ROW_1_RIGHT) dan tiga kursi belakang (ROW_2_LEFT, ROW_2_CENTER, dan ROW_2_RIGHT). Ada dua unit kontrol suhu, sisi pengemudi dan sisi penumpang, yang dapat disinkronkan secara opsional. Hal ini dapat dinyatakan dengan cara ini di AreaIDs:

HVAC_TEMPERATURE_SET > [ROW_1_LEFT | ROW_2_LEFT, ROW_1_RIGHT | ROW_2_CENTER | ROW_2_RIGHT]
HVAC_DUAL_ON > [ROW_1_LEFT | ROW_2_LEFT | ROW_1_RIGHT | ROW_2_CENTER | ROW_2_RIGHT]

Jika properti diaktifkan, ECU harus menyinkronkan suhu untuk area yang terpengaruh. Setiap parameter yang diubah sebagai efek samping dari mengaktifkan atau menonaktifkan parameter DUAL_ON akan menghasilkan callback onPropertyEvent() ke VHAL. Selain itu, jika menyetel suhu (misalnya, suhu pengemudi) mengubah suhu lain (seperti suhu penumpang depan), callback onPropertyEvent() yang sesuai harus dibuat.

Jika pengguna mengubah suhu yang merusak pengaitan (misalnya, menetapkan suhu penumpang secara independen), VHAL harus mengirim callback onPropertyEvent() yang sesuai (termasuk HVAC_DUAL_ON = false and HVAC_TEMPERATURE_SET[AreaID] = xxx). Properti ini ditentukan sebagai VehiclePropertyAccess.READ_WRITE, tetapi OEM dapat menerapkannya sebagai VehiclePropertyAccess.READ

Mode perubahan: ON_CHANGE
Mode akses: READ_WRITE/READ
Jenis enum: T/A
Jenis unit: T/A
Rilis: Android 13

HVAC_ELECTRIC_DEFROSTER_ON

Status pencairan es listrik.

Properti ini ditentukan sebagai VehiclePropertyAccess.READ_WRITE, tetapi OEM dapat menerapkannya sebagai VehiclePropertyAccess.READ

Mode perubahan: ON_CHANGE
Mode akses: READ_WRITE/READ
Jenis enum: T/A
Jenis unit: T/A
Rilis: Android 13

HVAC_FAN_DIRECTION

Setelan arah kipas. Properti ini ditentukan sebagai VehiclePropertyAccess.READ_WRITE, tetapi OEM hanya dapat menerapkannya sebagai VehiclePropertyAccess.READ.

Mode perubahan: ON_CHANGE
Mode akses: READ_WRITE/READ
Jenis enum: VehicleHvacFanDirection
Jenis unit: T/A
Rilis: Android 13

HVAC_FAN_DIRECTION_AVAILABLE

Posisi penggemar tersedia. Ini adalah bit mask posisi kipas yang tersedia untuk zona. Setiap arah kipas yang tersedia dilambangkan dengan entri terpisah dalam vektor. Arah kipas dapat memiliki beberapa bit dari kumpulan vehicle_hvac_fan_direction. Misalnya, mobil biasa mungkin memiliki posisi kipas berikut:

- FAN_DIRECTION_FACE (0x1) - FAN_DIRECTION_FLOOR (0x2) - FAN_DIRECTION_FACE | FAN_DIRECTION_FLOOR (0x3) - FAN_DIRECTION_DEFROST (0x4) - FAN_DIRECTION_FLOOR | FAN_DIRECTION_DEFROST (0x6)

Mode perubahan: STATIC
Mode akses: READ
Jenis enum: VehicleHvacFanDirection
Jenis unit: T/A
Rilis: Android 13

HVAC_FAN_SPEED

Setelan kecepatan kipas. maxInt32Value dan minInt32Value di VehicleAreaConfig harus ditentukan. Semua bilangan bulat antara minInt32Value dan maxInt32Value harus didukung.

• minInt32Value kecepatan kipas terendah
• maxInt32Value kecepatan kipas tertinggi

Properti ini tidak dalam unit tertentu, tetapi dalam rentang kecepatan relatif yang ditentukan. Properti ini ditentukan sebagai VehiclePropertyAccess.READ_WRITE, tetapi OEM dapat memilih untuk menerapkannya hanya sebagai VehiclePropertyAccess.READ.

Mode perubahan: ON_CHANGE
Mode akses: READ_WRITE/READ
Jenis enum: T/A
Jenis unit: T/A
Rilis: Android 13

HVAC_MAX_AC_ON

AC MAX aktif atau nonaktif. Jika AC MAX aktif, ECU dapat menyesuaikan item seperti posisi ventilasi, kecepatan kipas, dan suhu sesuai kebutuhan untuk mendinginkan kendaraan secepat mungkin. Setiap parameter yang diubah sebagai efek samping dari mengaktifkan atau menonaktifkan parameter MAX AC akan menghasilkan callback onPropertyEvent() ke VHAL. Properti ini ditentukan sebagai VehiclePropertyAccess.READ_WRITE, tetapi OEM dapat menerapkannya sebagai VehiclePropertyAccess.READ

Mode perubahan: ON_CHANGE
Mode akses: READ_WRITE/READ
Jenis enum: T/A
Jenis unit: T/A
Rilis: Android 13

HVAC_MAX_DEFROST_ON

Aktifkan dan nonaktifkan MAX DEFROST. Jika MAX DEFROST aktif, ECU dapat menyesuaikan item seperti posisi ventilasi, kecepatan kipas, dan suhu sesuai kebutuhan untuk mencairkan es di kaca secepat mungkin. Setiap parameter yang diubah sebagai efek samping dari mengaktifkan atau menonaktifkan parameter MAX DEFROST akan menghasilkan callback onPropertyEvent() ke VHAL. AreaIDs untuk HVAC_MAX_DEFROST_ON menunjukkan MAX DEFROST dapat dikontrol di area tersebut. Misalnya, areaConfig.areaId = {ROW_1_LEFT | ROW_1_RIGHT} menunjukkan bahwa HVAC_MAX_DEFROST_ON hanya dapat dikontrol untuk baris depan. Properti ini ditentukan sebagai VehiclePropertyAccess.READ_WRITE, tetapi OEM dapat menerapkannya sebagai VehiclePropertyAccess.READ

Mode perubahan: ON_CHANGE
Mode akses: READ_WRITE/READ
Jenis enum: T/A
Jenis unit: T/A
Rilis: Android 13

HVAC_POWER_ON

Merepresentasikan status daya global untuk HVAC. Menetapkan properti ini ke salah (false) DAPAT menandai beberapa properti yang mengontrol setiap fitur dan subsistem HVAC dalam status TIDAK TERSEDIA. Menetapkan properti ini ke benar DAPAT menandai beberapa properti yang mengontrol setiap fitur dan subsistem HVAC ke status TERSEDIA (kecuali jika salah satu atau semua properti TIDAK TERSEDIA berdasarkan nilai masing-masing).

HvacPower_DependentProperties adalah properti yang memerlukan HVAC untuk diaktifkan guna mengaktifkan fungsi. Di beberapa mobil, misalnya, untuk mengaktifkan AC, HVAC harus diaktifkan terlebih dahulu. Daftar HvacPower_DependentProperties harus ditetapkan di VehiclePropConfig.configArray HvacPower_DependentProperties hanya boleh berisi properti yang terkait dengan VehicleArea:SEAT

Pemetaan AreaID untuk properti HVAC_POWER_ON harus berisi semua AreaIDs yang dipetakan ke HvacPower_DependentProperties. Misalnya, mobil memiliki dua:

1. Kursi depan (ROW_1_LEFT, ROW_1_RIGHT) dan tiga kursi belakang (ROW_2_LEFT, ROW_2_CENTER, ROW_2_RIGHT). Jika fitur HVAC (AC, Suhu, dll.) di seluruh mobil bergantung pada satu pengontrol daya HVAC, HVAC_POWER_ON harus dipetakan ke [ROW_1_LEFT | ROW_1_RIGHT | ROW_2_LEFT | ROW_2_CENTER | ROW_2_RIGHT]
2. Kursi di baris depan (ROW_1_LEFT, ROW_1_RIGHT) dan tiga kursi di baris kedua (ROW_2_LEFT, ROW_2_CENTER, ROW_2_RIGHT) dan ketiga (ROW_3_LEFT, ROW_3_CENTER, ROW_3_RIGHT). Jika mobil memiliki pengontrol suhu di baris depan yang dapat beroperasi sepenuhnya secara independen dari pengontrol suhu di bagian belakang kendaraan, maka HVAC_POWER_ON harus dipetakan ke array dua elemen:

   - ROW_1_LEFT | ROW_1_RIGHT - ROW_2_LEFT | ROW_2_CENTER | ROW_2_RIGHT | ROW_3_LEFT | ROW_3_CENTER | ROW_3_RIGHT
   

Properti ini ditentukan sebagai VehiclePropertyAccess.READ_WRITE, tetapi OEM memiliki opsi untuk menerapkannya hanya sebagai VehiclePropertyAccess.READ.

Mode perubahan: ON_CHANGE
Mode akses: READ_WRITE/READ
Jenis enum: T/A
Jenis unit: T/A
Rilis: Android 13

HVAC_RECIRC_ON

Recirculasi aktif dan nonaktif. Mengontrol suplai udara luar ke kabin. Recirc on berarti sebagian besar aliran udara ke kabin berasal dari kabin. Sirkulasi ulang nonaktif berarti sebagian besar aliran udara ke kabin berasal dari luar mobil. Properti ini ditentukan sebagai VehiclePropertyAccess.READ_WRITE, tetapi OEM dapat menerapkannya sebagai VehiclePropertyAccess.READ

Mode perubahan: ON_CHANGE
Mode akses: READ_WRITE/READ
Jenis enum: T/A
Jenis unit: T/A
Rilis: Android 13

HVAC_SEAT_TEMPERATURE

Pemanas dan pendingin kursi. maxInt32Value dan minInt32Value di VehicleAreaConfig harus ditentukan. Semua bilangan bulat antara minInt32Value dan maxInt32Value harus didukung. maxInt32Value menunjukkan setelan pemanas suhu kursi maksimum. minInt32Value harus 0, kecuali jika kendaraan mendukung pendingin kursi. Dalam hal ini, minInt32Value menunjukkan setelan pendinginan suhu kursi maksimum. Properti ini tidak dalam unit tertentu, tetapi dalam rentang setelan suhu relatif yang ditentukan. Properti ini ditentukan sebagai VehiclePropertyAccess.READ_WRITE, tetapi OEM hanya dapat menerapkannya sebagai VehiclePropertyAccess.READ.

Mode perubahan: ON_CHANGE
Mode akses: READ_WRITE/READ
Jenis enum: T/A
Jenis unit: T/A
Rilis: Android 13

HVAC_SEAT_VENTILATION

Ventilasi kursi. maxInt32Value dan minInt32Value di VehicleAreaConfig harus ditentukan. Semua bilangan bulat antara minInt32Value dan maxInt32Value harus didukung. minInt32Value harus 0. maxInt32Value menunjukkan setelan ventilasi maksimum yang tersedia untuk kursi.

Properti ini tidak berada dalam unit tertentu, tetapi dalam rentang setelan ventilasi yang ditentukan.

Digunakan oleh aplikasi HVAC dan Asisten untuk mengaktifkan, mengubah, atau membaca status ventilasi kursi. Hal ini berbeda dengan pendingin kursi. Lampu dapat menyala bersamaan dengan pendingin, atau tidak.

Properti ini ditentukan sebagai >VehiclePropertyAccess.READ_WRITE, tetapi OEM hanya dapat menerapkannya sebagai VehiclePropertyAccess.READ.

Mode perubahan: ON_CHANGE
Mode akses: READ_WRITE/READ
Jenis enum: T/A
Jenis unit: T/A
Rilis: Android 13

HVAC_SIDE_MIRROR_HEAT

Pemanas kaca spion samping. Nilai yang meningkat menunjukkan tingkat pemanasan yang lebih tinggi untuk kaca spion samping. Anda harus menentukan maxInt32Value dan minInt32Value di VehicleAreaConfig Semua bilangan bulat antara minInt32Value dan maxInt32Value harus didukung. Dalam data konfigurasi:

• maxInt32Value mewakili tingkat pemanasan maksimum.
• minInt32Value HARUS 0 dan menunjukkan tidak ada pemanasan.

Properti ini tidak berada dalam unit tertentu, tetapi dalam rentang setelan pemanasan relatif yang ditentukan. Properti ini ditentukan sebagai VehiclePropertyAccess.READ_WRITE, tetapi OEM memiliki opsi untuk menerapkannya sebagai VehiclePropertyAccess.READ

Mode perubahan: ON_CHANGE
Mode akses: READ_WRITE/READ
Jenis enum: T/A
Jenis unit: T/A
Rilis: Android 13

HVAC_STEERING_WHEEL_HEAT

Menetapkan jumlah pemanas dan pendingin untuk setir. maxInt32Value dan minInt32Value di VehicleAreaConfig harus ditentukan. Semua bilangan bulat antara minInt32Value dan maxInt32Value harus didukung. maxInt32Value menunjukkan setelan pemanas setir maksimum. minInt32Value harus 0, kecuali jika kendaraan juga mendukung pendinginan setir. Dalam hal ini, minInt32Value menunjukkan setelan pendinginan setir maksimum. Properti ini tidak berada dalam unit tertentu, tetapi dalam rentang setelan pemanas yang ditentukan. Properti ini ditentukan sebagai VehiclePropertyAccess.READ, tetapi OEM hanya dapat menerapkannya sebagai VehiclePropertyAccess.READ.

Mode perubahan: ON_CHANGE
Mode akses: READ_WRITE/READ
Jenis enum: T/A
Jenis unit: T/A
Rilis: Android 13

HVAC_TEMPERATURE_CURRENT

Suhu saat ini HVAC.

Mode perubahan: ON_CHANGE
Mode akses: READ
Jenis enum: T/A
Jenis unit: VehicleUnit:CELSIUS
Rilis: Android 13

HVAC_TEMPERATURE_DISPLAY_UNITS

Satuan suhu untuk ditampilkan. Menunjukkan apakah suhu ditampilkan dalam Celcius atau Fahrenheit. VehiclePropConfig.configArray menunjukkan satuan tampilan suhu yang didukung. Misalnya, configArray[0] = CELSIUS configArray[1] = FAHRENHEIT Parameter ini DAPAT digunakan untuk menampilkan suhu HVAC apa pun dalam sistem. Nilai harus berupa salah satu dari VehicleUnit.CELSIUS atau VehicleUnit.FAHRENHEIT

Jika memperbarui HVAC_TEMPERATURE_DISPLAY_UNITS memengaruhi nilai properti *_DISPLAY_UNITS lainnya, nilainya harus diperbarui dan dikomunikasikan ke framework AAOS.

Properti ini ditentukan sebagai VehiclePropertyAccess.READ_WRITE, tetapi OEM dapat menerapkan VehiclePropertyAccess.READ saja.

Mode perubahan: ON_CHANGE
Mode akses: READ_WRITE/READ
Jenis enum: VehicleUnit
Jenis unit: T/A
Rilis: Android 13

HVAC_TEMPERATURE_SET

Suhu target HVAC disetel dalam Celcius.

minFloatValue dan maxFloatValue di VehicleAreaConfig harus ditentukan:

• minFloatValue setelan suhu minimum dalam Celsius.
• maxFloatValue setelan suhu maksimum dalam Celcius.

Jika semua nilai antara minFloatValue dan maxFloatValue tidak didukung, gunakan configArray untuk mencantumkan nilai suhu yang valid yang dapat ditetapkan. Ini juga menjelaskan tabel pencarian untuk mengonversi suhu dari Celsius ke Fahrenheit (dan sebaliknya) untuk kendaraan. configArray harus ditentukan jika konversi unit standar tidak didukung di kendaraan.

configArray ditetapkan sebagai berikut:

• configArray[0] [batas bawah suhu yang didukung dalam Celcius] * 10
• configArray[1] [batas atas suhu yang didukung dalam Celcius] * 10
• configArray[2] [increment in Celsius] * 10
• configArray[3] [batas bawah suhu yang didukung dalam Fahrenheit] * 10
• configArray[4] [batas atas suhu yang didukung dalam Fahrenheit] * 10
• configArray[5] [increment in Fahrenheit] * 10

minFloatValue dan maxFloatValue di VehicleAreaConfig harus sama dengan configArray[0] dan configArray[1]. Misalnya, jika kendaraan mendukung nilai suhu sebagai [16.0, 16.5, 17.0 ,..., 28.0] in Celsius [60.5, 61.5, 62.5 ,..., 84.5] dalam Fahrenheit, configArray harus configArray = {160, 280, 5, 605, 845, 10}

Idealnya, rasio penambahan Celsius terhadap penambahan Fahrenheit harus mendekati rasio sebenarnya yaitu 1 derajat Celsius terhadap 1,8 derajat Fahrenheit. Harus ada pemetaan satu-ke-satu dari semua nilai Celsius ke nilai Fahrenheit yang ditentukan oleh configArray. configArray digunakan oleh klien untuk mengonversi suhu properti ini dari Celsius ke Fahrenheit. Selain itu, ini memungkinkan klien mengetahui nilai Celsius untuk menetapkan properti guna mencapai nilai Fahrenheit yang diinginkan untuk sistem. Jika ECU tidak memiliki pemetaan satu-ke-satu dari semua nilai Celcius ke nilai Fahrenheit, configArray hanya boleh menentukan daftar nilai Celcius dan Fahrenheit yang memiliki pemetaan satu-ke-satu.

Misalnya, jika ECU mendukung nilai Celcius dari 16 hingga 28 dan nilai Fahrenheit dari 60 hingga 85, masing-masing dengan penambahan 1, maka salah satu kemungkinan configArray adalah code>{160, 280, 10, 600, 840, 20}Dalam hal ini, 85 bukan suhu yang didukung.

Setiap nilai yang ditetapkan di antara nilai yang valid harus dibulatkan ke nilai valid terdekat. Sebaiknya OEM juga menerapkan properti kendaraan HVAC_TEMPERATURE_VALUE_SUGGESTION karena menyediakan metode sederhana bagi aplikasi untuk menentukan nilai suhu yang dapat ditetapkan untuk kendaraan dan untuk mengonversi nilai antara Celcius dan Fahrenheit.

Properti ini ditentukan sebagai VehiclePropertyAccess.READ, tetapi OEM dapat menerapkannya sebagai VehiclePropertyAccess.READ

Mode perubahan: ON_CHANGE
Mode akses: READ_WRITE/READ
Jenis enum: T/A
Jenis unit: VehicleUnit:CELSIUS
Rilis: Android 13

HVAC_TEMPERATURE_VALUE_SUGGESTION

Nilai yang disarankan untuk menetapkan suhu HVAC.

Terapkan properti untuk membantu aplikasi memahami nilai suhu terdekat yang didukung dalam Celcius atau Fahrenheit.

• floatValues[0] Nilai yang diminta yang ingin ditetapkan suhunya oleh aplikasi.
• floatValues[1] Satuan untuk floatValues[0] dan harus berupa salah satu dari {VehicleUnit.CELSIUS, VehicleUnit.FAHRENHEIT}
• floatValues[2] Nilai OEM yang disarankan dalam CELSIUS (nilai ini tidak disertakan dalam permintaan).
• floatValues[3] Nilai OEM yang disarankan dalam FAHRENHEIT (nilai ini tidak disertakan dalam permintaan).

Aplikasi memanggil set(VehiclePropValue propValue) dengan nilai dan unit yang diminta untuk nilai tersebut. OEM harus menampilkan nilai yang disarankan di floatValues[2] dan floatValues[3] dengan callback onPropertyEvent(). Nilai yang disarankan harus sesuai dengan nilai yang dapat berasal dari HVAC_TEMPERATURE_SET configArray Dengan kata lain, nilai yang disarankan dan tabel nilai dari configArray harus sama.

Sebaiknya OEM menambahkan logika kustom dalam penerapan VHAL mereka untuk menghindari pembuatan permintaan ke ECU HVAC. Logikanya dapat berupa sebagai berikut. Untuk mengonversi suhu dari Celsius ke Fahrenheit:

// Given tempC and the configArray float minTempC = configArray[0] / 10.0; float temperatureIncrementCelsius = configArray[2] / 10.0; float minTempF = configArray[3] / 10.0; float temperatureIncrementFahrenheit = configArray[5] / 10.0; // Round to the closest increment int numIncrements = round((tempC - minTempC) / temperatureIncrementCelsius); tempF = temperatureIncrementFahrenheit * numIncrements + minTempF;

Misalnya, saat pengemudi menggunakan asisten suara untuk menyetel suhu HVAC ke 66,2 dalam Fahrenheit. Pertama, aplikasi menetapkan properti ini dengan nilai [66.2, (float)VehicleUnit.FAHRENHEIT,0,0] Jika OEM menyarankan untuk menetapkan 19,0 dalam Celcius atau 66,5 dalam Fahrenheit sesuai permintaan pengguna, VHAL harus membuat callback dengan nilai properti [66.2, (float)VehicleUnit.FAHRENHEIT, 19.0, 66.5] Setelah asisten suara mendapatkan callback, asisten suara akan memberi tahu pengguna dan menetapkan suhu HVAC ke nilai yang disarankan.

Contoh lain, aplikasi menerima 21 Celsius sebagai nilai suhu saat ini dengan mengkueri HVC_TEMPERATURE_SET, tetapi aplikasi perlu mengetahui nilai yang ditampilkan di UI mobil dalam Fahrenheit. Untuk ini, aplikasi menetapkan properti ke [21, (float)VehicleUnit.CELSIUS, 0, 0] Jika nilai yang disarankan oleh OEM untuk 21 Celcius adalah 70 Fahrenheit, VHAL harus menghasilkan callback dengan nilai properti [21, (float)VehicleUnit.CELSIUS, 21.0, 70.0] Dalam hal ini, aplikasi dapat mengetahui bahwa nilainya adalah 70,0 Fahrenheit di UI mobil.

Mode perubahan: ON_CHANGE
Mode akses: READ_WRITE
Jenis enum: T/A
Jenis unit: T/A
Rilis: Android 13

HW_CUSTOM_INPUT

Menentukan peristiwa input partner OEM kustom. Peristiwa input ini harus digunakan oleh partner OEM yang ingin menyebarkan peristiwa yang tidak didukung oleh Android. Nilai ini hanya terdiri dari array nilai int32. Properti Android adalah:

• int32Values[0] Kode input yang mengidentifikasi fungsi yang mewakili peristiwa ini. Jenis peristiwa yang valid ditentukan oleh CustomInputType.CUSTOM_EVENT_F1 hingga CustomInputType.CUSTOM_EVENT_F10 Jenis peristiwa ini mewakili peristiwa kustom yang akan ditentukan oleh partner OEM.
• int32Values[1] Jenis tampilan target yang ditentukan di VehicleDisplay Peristiwa yang tidak terikat dengan tampilan tertentu harus dikirim ke VehicleDisplay#MAIN
• int32Values[2] Penghitung ulangi, jika 0, peristiwa tidak diulang. Nilai 1 atau lebih tinggi menunjukkan berapa kali peristiwa ini telah diulang.

Mode perubahan: ON_CHANGE
Mode akses: READ
Jenis enum: CustomInputType
Jenis unit: T/A
Rilis: Android 13

HW_KEY_INPUT

Properti untuk memasukkan peristiwa input hardware ke Android.

• int32Values[0] Tindakan yang ditentukan oleh VehicleHwKeyInputAction
• int32Values[1] Kode kunci, harus menggunakan kode kunci android standar
• int32Values[2] Tampilan target yang ditentukan di VehicleDisplay Peristiwa yang tidak terikat dengan tampilan tertentu harus dikirim ke VehicleDisplay#MAIN
• int32Values[3] (Opsional) Jumlah jeda. Nilai harus sama dengan atau lebih besar dari 1. Jika dihilangkan, Android akan ditetapkan secara default ke 1.

Ubah mode: .ON_CHANGE
Mode akses: READ
Jenis enum: T/A
Jenis unit: T/A
Rilis: Android 13

HW_KEY_INPUT_V2

Properti untuk memasukkan peristiwa input hardware ke Android.

• int32array[0] Tampilan target yang ditentukan oleh VehicleDisplay seperti:
  VehicleDisplay::MAIN, VehicleDisplay::INSTRUMENT_CLUSTER, VehicleDisplay::AUX
• int32array[1] Kode kunci, harus menggunakan kode kunci Android standar, seperti KEYCODE_HOME dan KEYCODE_BACK
• Tindakan int32array[2] yang ditentukan di VehicleHwKeyInputAction, seperti:
  VehicleHwKeyInputAction::ACTION_UP, VehicleHwKeyInputAction::ACTION_UP
• int32array[3] Jumlah pengulangan peristiwa. Untuk peristiwa tombol ditekan, ini adalah jumlah ulangan dengan tombol pertama ditekan dimulai dari 0 dan dihitung dari sana. Untuk peristiwa tombol atas, nilai ini selalu sama dengan 0.
• int64array[0] Waktu nonaktif dalam nanodetik yang berlalu sejak booting terakhir. Menunjukkan waktu peristiwa tombol ditekan terbaru. Untuk peristiwa down, ini adalah waktu peristiwa down.

Mode perubahan: ON_CHANGE
Mode akses: READ
Jenis enum: T/A
Jenis unit: T/A
Rilis: Android 14

HW_MOTION_INPUT

Properti untuk memasukkan peristiwa input hardware ke Android.

• int32array[0] Tampilan target yang ditentukan oleh VehicleDisplay, seperti:
  VehicleDisplay::MAIN, VehicleDisplay::INSTRUMENT_CLUSTER, VehicleDisplay::AUX
• int32array[1] Jenis input yang ditentukan di VehicleHwMotionInputSource, seperti:
  VehicleHwMotionInputSource::SOURCE_KEYBOARD, VehicleHwMotionInputSource::SOURCE_DPAD
• int32array[2] Kode tindakan yang ditentukan di VehicleHwMotionInputAction, seperti:
  VehicleHwMotionInputAction::ACTION_UP, VehicleHwMotionInputAction::ACTION_DOWN
• int32array[3] Flag status tombol yang ditentukan di VehicleHwMotionButtonStateFlag, seperti:
  VehicleHwMotionButtonStateFlag::BUTTON_PRIMARY, VehicleHwMotionButtonStateFlag::BUTTON_SECONDARY
• int32array[4] Jumlah peristiwa pointer, N. N harus berupa bilangan bulat positif.
• int32array[5:5+N-1] ID pointer, panjang N
• int32array[5+N:5+2*N-1] Jenis alat, panjang N. Seperti yang ditentukan dalam VehicleHwMotionToolType, seperti:
  VehicleHwMotionToolType::TOOL_TYPE_FINGER, VehicleHwMotionToolType::TOOL_TYPE_STYLUS
• Data floatArray[0:N-1] x, panjang N
• Data y floatArray[N:2*N-1], panjang N
• Data tekanan floatArray[2*N:3*N-1], panjang N
• Data ukuran floatArray[3*N:4*N-1], panjang N
• int64array[0] Waktu nonaktif, nanodetik yang berlalu sejak booting. Menunjukkan waktu saat pengguna awalnya menekan ke bawah untuk memulai streaming peristiwa posisi. Untuk peristiwa down, ini adalah waktu peristiwa down.

Mode perubahan: ON_CHANGE
Mode akses: READ
Jenis enum: T/A
Jenis unit: T/A
Rilis: Android 14

HW_ROTARY_INPUT

Properti untuk memasukkan peristiwa rotasi hardware ke Android.

• int32Values[0] RotaryInputType untuk mengidentifikasi tombol putar yang diputar.
• int32Values[1] Jumlah detent (klik), positif untuk searah jarum jam, negatif untuk berlawanan arah jarum jam.
• int32Values[2] Tampilan target yang ditentukan dalam Peristiwa VehicleDisplay yang tidak terikat dengan tampilan tertentu harus dikirim ke VehicleDisplay#MAIN
• int32values[3 .. 3 + abs(number of detents) - 2] Delta nanodetik antara pasangan jeda berturut-turut jika jumlah jeda lebih dari 1 atau kurang dari -1.
• VehiclePropValue.timestamp Kapan rotasi terjadi. Jika jumlah detent lebih dari 1 atau kurang dari -1, saat detent rotasi pertama terjadi.

Mode perubahan: ON_CHANGE
Mode akses: READ
Jenis enum: RotaryInputType
Jenis unit: T/A
Rilis: Android 13

IGNITION_STATE

Merepresentasikan status pengapian.

Mode perubahan: ON_CHANGE
Mode akses: READ
Jenis enum: VehicleIgnitionState
Jenis unit: T/A
Rilis: Android 13

INFO_DRIVER_SEAT

Implementasi VHAL lokasi kursi pengemudi harus mengabaikan areaId. Gunakan VehicleArea:GLOBAL

Mode perubahan: STATIC
Mode akses: READ
Jenis enum: VehicleAreaSeat
Jenis unit: T/A
Rilis: Android 13

INFO_EV_BATTERY_CAPACITY

Kapasitas baterai nominal untuk kendaraan listrik atau hibrida. Menampilkan kapasitas baterai nominal, EV atau hibrida. Ini adalah total kapasitas baterai yang dapat digunakan saat kendaraan masih baru. Nilai ini mungkin berbeda dengan EV_CURRENT_BATTERY_CAPACITY karena EV_CURRENT_BATTERY_CAPACITY menampilkan kapasitas baterai yang dapat digunakan secara real-time dengan mempertimbangkan faktor-faktor seperti penuaan baterai dan dependensi suhu.

Mode perubahan: STATIC
Mode akses: READ
Jenis enum: T/A
Jenis unit: VehicleUnit:WH
Rilis: Android 13

INFO_EV_CONNECTOR_TYPE

Daftar konektor yang dapat digunakan Kendaraan Listrik ini. Jika kendaraan memiliki beberapa port pengisian daya, properti ini harus menampilkan semua kemungkinan jenis konektor yang dapat digunakan oleh setidaknya satu port pengisian daya di kendaraan.

Mode perubahan: STATIC
Mode akses: READ
Jenis enum: EvConnectorType
Jenis unit: T/A
Rilis: Android 13

INFO_EV_PORT_LOCATION

Properti ini harus menyampaikan lokasi port pengisian daya di Kendaraan Listrik menggunakan enum PortLocationType. Jika kendaraan memiliki beberapa port, properti ini harus menampilkan port yang memungkinkan pengisian daya tercepat. Untuk mengomunikasikan semua lokasi port, gunakan INFO_MULTI_EV_PORT_LOCATIONS

INFO_EXTERIOR_DIMENSIONS

Dimensi eksterior kendaraan:

• Tinggi: int32Values[0]
• Durasi: int32Values[1]
• Lebar: int32Values[2]
• Lebar, termasuk cermin: int32Values[3]
• Jarak sumbu roda, termasuk spion: int32Values[4]
• Lebar jalur depan: int32Values[5]
• Lebar jalur belakang: int32Values[6]
• Diameter belok dari tepi jalan ke tepi jalan: int32Values[7]

Mode perubahan: STATIC
Mode akses: READ
Jenis enum: T/A
Jenis unit: VehicleUnit:MILLIMETER
Rilis: Android 13

INFO_FUEL_CAPACITY

Kapasitas bahan bakar kendaraan dalam mililiter. Properti ini harus menyampaikan jumlah maksimum bahan bakar yang dapat disimpan di kendaraan dalam milililiter. Properti ini tidak berlaku untuk kendaraan listrik (EV). Artinya, jika INFO_FUEL_TYPE hanya berisi FuelType::FUEL_TYPE_ELECTRIC, INFO_FUEL_CAPACITY tidak boleh diterapkan. Untuk kendaraan listrik, terapkan INFO_EV_BATTERY_CAPACITY.

Mode perubahan: STATIC
Mode akses: READ
Jenis enum: T/A
Jenis unit: VehicleUnit:MILLILITER
Rilis: Android 13

INFO_FUEL_DOOR_LOCATION

Lokasi tutup tangki bahan bakar. Properti ini harus menyampaikan lokasi pintu bahan bakar pada kendaraan. Properti ini tidak berlaku untuk Kendaraan Listrik. Artinya, jika INFO_FUEL_TYPE hanya berisi FuelType::FUEL_TYPE_ELECTRIC, properti ini tidak boleh diterapkan. Untuk Kendaraan Listrik, terapkan INFO_EV_PORT_LOCATION atau INFO_MULTI_LOCATIONS

Mode perubahan: STATIC
Mode akses: READ
Jenis enum: PortLocationType
Jenis unit: T/A
Rilis: Android 13

INFO_FUEL_TYPE

Daftar bahan bakar yang dapat digunakan kendaraan. FuelType::FUEL_TYPE_ELECTRIC hanya boleh disertakan jika kendaraan dapat dicolokkan dan dapat diisi ulang. Misalnya, Kendaraan Listrik Hybrid Penuh (FHEV) tidak boleh menyertakan FuelType::FUEL_TYPE_ELECTRIC karena nilai INT32_VEC untuk INFO_FUEL_TYPE INFO_FUEL_TYPE dapat diisi seperti itu.

int32Values = { FuelType::FUEL_TYPE_UNLEADED }

Mode perubahan: STATIC
Mode akses: READ
Jenis enum: FuelType
Jenis unit: T/A
Rilis: Android 13

INFO_MAKE

Produsen kendaraan. Properti ini harus menyampaikan nama merek publik kendaraan.

Mode perubahan: STATIC
Mode akses: READ
Jenis enum: T/A
Jenis unit: T/A
Rilis: Android 13

INFO_MODEL

Model kendaraan. Properti ini harus menyampaikan nama model publik kendaraan.

Mode perubahan: STATIC
Mode akses: READ
Jenis enum: T/A
Jenis unit: T/A
Rilis: Android 13

INFO_MODEL_YEAR

Tahun model kendaraan dalam format `YYYY` berdasarkan kalender Gregorian.

Mode perubahan: STATIC
Mode akses: READ
Jenis enum: T/A
Jenis unit: VehicleUnit:YEAR
Rilis: Android 13

INFO_MULTI_EV_PORT_LOCATIONS

Beberapa lokasi port Kendaraan Listrik Umum. Terapkan properti ini jika kendaraan memiliki beberapa port Kendaraan Listrik Umum. Lokasi port ditentukan di PortLocationType. Misalnya, mobil memiliki satu port kiri depan dan satu port kiri belakang:

int32Values[0] = PortLocationType::FRONT_LEFT int32Values[1] = PortLocationType::REAR_LEFT

Jika kendaraan hanya memiliki satu port, nilai properti ini harus mencantumkan satu elemen. Untuk mendeskripsikan satu lokasi port, lihat INFO-EV-PORT-LOCATION

Mode perubahan: STATIC
Mode akses: READ
Jenis enum: PortLocationType
Jenis unit: T/A
Rilis: Android 13

INFO_VIN

VIN kendaraan.

Mode perubahan: STATIC
Mode akses: READ
Jenis enum: T/A
Jenis unit: T/A
Rilis: Android 13

INITIAL_USER_INFO

Menentukan pengguna Android yang akan digunakan selama inisialisasi. Properti ini dipanggil oleh sistem Android saat melakukan inisialisasi dan memungkinkan HAL menentukan pengguna Android mana yang harus dimulai. Permintaan ini dibuat dengan menetapkan VehiclePropValue (ditentukan oleh InitialUserInfoRequest), dan HAL harus merespons dengan peristiwa perubahan properti (ditentukan oleh InitialUserInfoResponse). Jika HAL tidak merespons setelah waktu yang ditentukan oleh sistem Android, sistem Android akan melanjutkan seolah HAL menampilkan respons tindakan InitialUserInfoResponseAction:DEFAULT. Misalnya, saat booting pertama, permintaannya dapat berupa:

int32[0] 42  // request id (arbitrary number set by Android system)
int32[1] 1   // InitialUserInfoRequestType::FIRST_BOOT
int32[2] 0   // id of current user (usersInfo.currentUser.userId)
int32[3] 1   // flag of current user (usersInfo.currentUser.flags = SYSTEM)
int32[4] 1   // number of existing users (usersInfo.numberUsers);
int32[5] 0   // user #0  (usersInfo.existingUsers[0].userId)
int32[6] 1   // flags of user #0  (usersInfo.existingUsers[0].flags)

int32[0] 42  // must match the request id from the request
int32[1] 2   // action = InitialUserInfoResponseAction::CREATE
int32[2] -10000  // userToSwitchOrCreate.userId (not used as user will be created)
int32[3] 8   // userToSwitchOrCreate.flags = ADMIN string: "||Owner" // userLocales + separator + userNameToCreate

Mode perubahan: ON_CHANGE
Mode akses: READ_WRITE
Jenis enum: T/A
Jenis unit: T/A
Rilis: Android 13

J ke R

LANE_CENTERING_ASSIST_COMMAND

Lane Centering Assist (LCA) commands. Commands to activate and suspend LCA. When the command ACTIVATE from LaneCenteringAssistCommand is sent, LANE_CENTERING_ASSIST_STATE must be set to LaneCenteringAssistState#ACTIVATION_REQUESTED When the ACTIVATE command succeeds, LANE_CENTERING_ASSIST_STATE must be set to LaneCenteringAssistState#ACTIVATED When the command DEACTIVATE from LaneCenteringAssistCommand succeeds, LANE_CENTERING_ASSIST_STATE must be set to LaneCenteringAssistState#ENABLED

For the global area ID (0), the VehicleAreaConfig#supportedEnumValues must be defined unless all enum values of LaneCenteringAssistCommand are supported. When this property is not available because LCA is disabled (for example, LANE_CENTERING_ASSIST_ENABLED is false), this property must return StatusCode#NOT_AVAILABLE_DISABLED If LANE_CENTERING_ASSIST_STATE is implemented and the state is set to an ErrorState value, then this property must return a StatusCode that aligns with the ErrorState value. For example, if LANE_CENTERING_ASSIST_STATE is set to ErrorState#NOT_AVAILABLE_SPEED_LOW then this property must return StatusCode#NOT_AVAILABLE_SPEED_LOW

Change mode: ON_CHANGE
Access mode: WRITE
Enum type: LaneCenteringAssistCommand
Unit type: N/A
Release: Android 14

LANE_CENTERING_ASSIST_ENABLED

Enable or disable Lane Centering Assist (LCA). Set true to enable LCA and false to disable LCA. When LCA is enabled, the ADAS system in the vehicle should be turned on and waiting for an activation signal from the driver. Once the feature is activated, the ADAS system should be steering the vehicle to keep it centered in its current lane.

This is different from Lane Keep Assist (LKA) which monitors if the driver unintentionally drifts toward or over the lane marking. If an unintentional lane departure is detected, the system applies steering control to return the vehicle into the current lane. In general, LANE_CENTERING_ASSIST_ENABLED should always return true or false. If the feature is not available due to some temporary state, such as the vehicle speed being too low or too high, that information must be conveyed through the ErrorState values in the LANE_CENTERING_ASSIST_STATE property.

This property is defined as VehiclePropertyAccess.READ_WRITE, but OEMs can implement it as VehiclePropertyAccess.READonly.

Change mode: ON_CHANGE
Access mode: READ_WRITE/READ
Enum type: N/A
Unit type: N/A
Release: Android 14

LANE_CENTERING_ASSIST_STATE

Lane Centering Assist (LCA) state. Returns the current state of LCA. This property must always return a valid state defined in LaneCenteringAssistState or ErrorState It must not surface errors through StatusCode and must use the supported error states instead.

If LCA includes lane departure warnings, those warnings must be surfaced through the Lane Departure Warning (LDW) properties.

For the global area ID (0), the VehicleAreaConfig#supportedEnumValues array must be defined unless all states of both LaneCenteringAssistState (including OTHER, which is not recommended) and ErrorState are supported.

Change mode: ON_CHANGE
Access mode: READ
Enum type: LaneCenteringAssistState/ErrorState
Unit type: N/A
Release: Android 14

LANE_DEPARTURE_WARNING_ENABLED

Enable or disable Lane Departure Warning (LDW). Set true to enable LDW and false to disable LDW. When LDW is enabled, the ADAS system in the vehicle should be turned on and monitoring if the vehicle is approaching or crossing lane lines, in which case a warning will be given.

In general, LANE_DEPARTURE_WARNING_ENABLED should always return true or false. If the feature is not available due to some temporary state, such as the vehicle speed being too low or too high, that information must be conveyed through the ErrorState values in the LANE_DEPARTURE_WARNING_STATE property.

This property is defined as VehiclePropertyAccess.READ_WRITE, but OEMs can implement it as VehiclePropertyAccess.READ only.

Change mode: ON_CHANGE
Access mode: READ_WRITE/READ
Enum type: N/A
Unit type: N/A
Release: Android 14

LANE_DEPARTURE_WARNING_STATE

Lane Departure Warning (LDW) state. Returns the current state of LDW. This property must always return a valid state defined in LaneDepartureWarningState or ErrorState It must not surface errors through StatusCode and must use the supported error states instead.

For the global area ID (0), the VehicleAreaConfig#supportedEnumValues array must be defined unless all states of both LaneDepartureWarningState (including OTHER, which is not recommended) and ErrorState are supported.

Change mode: ON_CHANGE
Access mode: READ
Enum type: LaneDepartureWarningState/ErrorState
Unit type: N/A
Release: Android 14

LANE_KEEP_ASSIST_ENABLED

Enable or disable Lane Keep Assist (LKA). Set true to enable LKA and false to disable LKA. When LKA is enabled, the ADAS system in the vehicle should be turned on and monitoring if the driver unintentionally drifts toward or over the lane marking. If an unintentional lane departure is detected, the system applies steering control to return the vehicle into the current lane. This is different from Lane Centering Assist (LCA) which, when activated, applies continuous steering control to keep the vehicle centered in the current lane.

In general, LANE_KEEP_ASSIST_ENABLED should always return true or false. If the feature is not available due to some temporary state, such as the vehicle speed being too low or too high, that information must be conveyed through the ErrorState values in the LANE_KEEP_ASSIST_STATE property.

This property is defined as VehiclePropertyAccess.READ_WRITE, but OEMs can implement it as VehiclePropertyAccess.READ only.

Change mode: ON_CHANGE
Access mode: READ_WRITE/READ
Enum type: N/A
Unit type: N/A
Release: Android 14

LANE_KEEP_ASSIST_STATE

Lane Keep Assist (LKA) state. Returns the current state of LKA. This property must always return a valid state defined in LaneKeepAssistState or ErrorState It must not surface errors through StatusCode and must use the supported error states instead

If LKA includes lane departure warnings before applying steering corrections, those warnings must be surfaced through the Lane Departure Warning (LDW) properties.

For the global area ID (0), the VehicleAreaConfig#supportedEnumValues array must be defined unless all states of both LaneKeepAssistState (including OTHER, which is not recommended) and ErrorState are supported.

Change mode: ON_CHANGE
Access mode: READ
Enum type: LaneKeepAssistState/ErrorState
Unit type: N/A
Release: Android 14

LOCATION_CHARACTERIZATION

Characterization of inputs used for computing location. This property must indicate what (if any) data and sensor inputs are considered by the system when computing the vehicle's location that is shared with Android through the GNSS HAL.

The value must return a collection of bit flags. The bit flags are defined in LocationCharacterization. The value must also include exactly one of DEAD_RECKONED or RAW_GNSS_ONLY among its collection of bit flags.

When this property is not supported, it is assumed that no additional sensor inputs are fused into the GNSS updates provided through the GNSS HAL. That is unless otherwise specified through the GNSS HAL interfaces.

Change mode: STATIC
Access mode: READ
Enum type: N/A
Unit type: N/A
Release: Android 14

MIRROR_AUTO_FOLD_ENABLED

Represents property for Mirror Auto Fold feature. This property is true when the feature for automatically folding the vehicle's side mirrors (for example, when the mirrors fold inward automatically when one exits and locks the vehicle) is enabled.

This property is defined as VehiclePropertyAccess.READ_WRITE, but OEMs can implement it as VehiclePropertyAccess.READonly.

Change mode: ON_CHANGE
Access mode: READ_WRITE/READ
Enum type: N/A
Unit type: N/A
Release: Android 14

MIRROR_AUTO_TILT_ENABLED

Represents property for Mirror Auto Tilt feature. This property is true when the feature for automatically tilting the vehicle's side mirrors (for example, when the mirrors tilt downward automatically when one reverses the vehicle) is enabled.

This property is defined as VehiclePropertyAccess.READ_WRITE, but OEMs can implement it as VehiclePropertyAccess.READonly.

Change mode: ON_CHANGE
Access mode: READ_WRITE/READ
Enum type: N/A
Unit type: N/A
Release: Android 14

MIRROR_FOLD

Mirror fold. True indicates mirrors are folded. This property is defined as VehiclePropertyAccess.READ_WRITE, but OEMs can implement it as VehiclePropertyAccess.READonly.

Change mode: ON_CHANGE
Access mode: READ_WRITE/READ
Enum type: N/A
Unit type: N/A
Release: Android 13

MIRROR_LOCK

Mirror lock. True indicates mirror positions are locked and not changeable. This property is defined as VehiclePropertyAccess.READ_WRITE, but OEMs can implement it as VehiclePropertyAccess.READonly.

Change mode: ON_CHANGE
Access mode: READ_WRITE/READ
Enum type: N/A
Unit type: N/A
Release: Android 13

MIRROR_Y_MOVE

Mirror Y move. The maxInt32Value and minInt32Value in each VehicleAreaConfig must be defined. All integers between minInt32Value and maxInt32Value must be supported.

The maxInt32Value represents the maximum movement speed of the mirror while tilting right. The minInt32Value represents the maximum movement speed of the mirror while tilting left.

Larger absolute values, either positive or negative, indicate a faster movement speed. Once the mirror reaches the positional limit, the value must reset to 0. If MIRROR_Y_MOVE's value is currently 0, then that means there is no movement currently occurring.

This property is not in any particular unit but in a specified range of relative movement speeds.

This property is defined as VehiclePropertyAccess.READ_WRITE, but OEMs can implement it as VehiclePropertyAccess.READonly.

Change mode: ON_CHANGE
Access mode: READ_WRITE/READ
Enum type: N/A
Unit type: N/A
Release: Android 13

MIRROR_Y_POS

Mirror Y position. The maxInt32Value and minInt32Value in VehicleAreaConfig must be defined. All integers between minInt32Value and maxInt32Value must be supported. The minInt32Value indicates the mirror is tilted completely to the left.

This must be a non-positive value. The maxInt32Value indicates the mirror is tilted completely to the right. This must be a non-negative value. 0 indicates the mirror is not tilted in either direction.

Values in between minInt32Value and maxInt32Value indicate a transition state between the left extreme and right extreme positions.

This property is not in any particular unit but in a specified range of relative positions.

This property is defined as VehiclePropertyAccess.READ_WRITE, but OEMs can implement it as VehiclePropertyAccess.READonly.

Change mode: ON_CHANGE
Access mode: READ_WRITE/READ
Enum type: N/A
Unit type: N/A
Release: Android 13

MIRROR_Z_MOVE

Mirror Z move. The maxInt32Value and minInt32Value in each VehicleAreaConfig must be defined. All integers between minInt32Value and maxInt32Value must be supported.

The maxInt32Value represents the maximum movement speed of the mirror while tilting upwards. The minInt32Value represents the maximum movement speed of the mirror while tilting downwards. Larger absolute values, either positive or negative, indicate a faster movement speed. Once the mirror reaches the positional limit, the value must reset to 0. If MIRROR_Z_MOVE's value is currently 0, then that means there is no movement currently occurring.

This property is not in any particular unit but in a specified range of relative movement speeds.

This property is defined as VehiclePropertyAccess.READ_WRITE, but OEMs can implement it as VehiclePropertyAccess.READonly.

Change mode: ON_CHANGE
Access mode: READ_WRITE/READ
Enum type: N/A
Unit type: N/A
Release: Android 13

MIRROR_Z_POS

Mirror Z position. The maxInt32Value and minInt32Value in VehicleAreaConfig must be defined. All integers between minInt32Value and maxInt32Value must be supported. The minInt32Value indicates the mirror is tilted completely downwards. This must be a non-positive value. The maxInt32Value indicates the mirror is tilted completely upwards. This must be a non-negative value. 0 indicates the mirror is not tilted in either direction.

Values in between minInt32Value and maxInt32Value indicate a transition state between the fully downward and fully upwards positions.

This property is not in any particular unit but in a specified range of relative positions.

This property is defined as VehiclePropertyAccess.READ_WRITE, but OEMs can implement it as VehiclePropertyAccess.READonly.

Change mode: ON_CHANGE
Access mode: READ_WRITE/READ
Enum type: N/A
Unit type: N/A
Release: Android 13

NIGHT_MODE

True indicates that the night mode sensor has detected the car cabin environment to have low light. The platform can use this to, for example, enable an appropriate UI for better viewing in dark or low light environments.

Change mode: ON_CHANGE
Access mode: READ
Enum type: N/A
Unit type: N/A
Release: Android 13

OBD2_FREEZE_FRAME

Reports a snapshot of the value of the OBD2 sensors available at the time that a fault occurred and was detected. A configArray must be provided with the same meaning as defined for OBD2_LIVE_FRAME

The values of this property are to be interpreted in a similar fashion as those for OBD2_LIVE_FRAME, with the exception that the stringValue field may contain a non-empty diagnostic troubleshooting code (DTC).

An IVehicle#get request of this property must provide a value for int64Values[0]. This is interpreted as the timestamp of the freeze frame to retrieve. A list of timestamps can be obtained by an IVehicle#get of OBD2_FREEZE_FRAME_INFO

Should no freeze frame be available at the given timestamp, a response of NOT_AVAILABLE must be returned by the implementation. Because vehicles may have limited storage for freeze frames, it is possible for a frame request to respond with NOT_AVAILABLE even if the associated timestamp has been recently obtained through OBD2_FREEZE_FRAME_INFO

Change mode: ON_CHANGE
Access mode: READ
Enum type: N/A
Unit type: N/A
Release: Android 13

OBD2_FREEZE_FRAME_CLEAR

Freeze frame clear. Reports a snapshot of the value of the OBD2 sensors available at the time that a fault occurred and was detected. A configArray must be provided with the same meaning as defined for OBD2_LIVE_FRAME

The values of this property are to be interpreted in a similar fashion as those for OBD2_LIVE_FRAME, with the exception that the stringValue field may contain a non-empty diagnostic troubleshooting code (DTC).

A IVehicle#get request of this property must provide a value for int64Values[0]. This will be interpreted as the timestamp of the freeze frame to retrieve. A list of timestamps can be obtained by a IVehicle#get of OBD2_FREEZE_FRAME_INFO

Should no freeze frame be available at the given timestamp, a response of NOT_AVAILABLE must be returned by the implementation. Because vehicles may have limited storage for freeze frames, it is possible for a frame request to respond with NOT_AVAILABLE even if the associated timestamp has been recently obtained via OBD2_FREEZE_FRAME_INFO

Change mode: ON_CHANGE
Access mode: WRITE
Enum type: N/A
Unit type: N/A
Release: Android 13

OBD2_FREEZE_FRAME_INFO

This property describes the current freeze frames stored in vehicle memory and available for retrieval through OBD2_FREEZE_FRAME The values are to be interpreted as follows. Each element of int64Values must be the timestamp at which a a fault code has been detected and the corresponding freeze frame stored, and each such element can be used as the key to OBD2_FREEZE_FRAME to retrieve the corresponding freeze frame.

Change mode: ON_CHANGE
Access mode: READ
Enum type: N/A
Unit type: N/A
Release: Android 13

OBD2_LIVE_FRAME

Reports a snapshot of the current (live) values of the OBD2 sensors available. The configArray is set as follows:

• configArray[0] Number of vendor-specific integer-valued sensors
• configArray[1] Number of vendor-specific float-valued sensors

The values of this property are to be interpreted as in the following example. Considering a configArray = {2,3} int32Values must be a vector containing Obd2IntegerSensorIndex.LAST_SYSTEM_INDEX plus two elements (or, 33 elements). floatValues must be a vector containing Obd2FloatSensorIndex.LAST_SYSTEM_INDEX plus three elements (or, 73 elements).

It is possible for each frame to contain a different subset of sensor values, both system provided sensors, and vendor-specific ones. In order to support this, the bytes element of the property value is used as a bitmask. Bytes must have a sufficient number of bytes to represent the total number of possible sensors (in this case, 14 bytes to represent 106 possible values). It'is to be read as a contiguous bitmask such that each bit indicates the presence or absence of a sensor from the frame, starting with as many bits as the size of int32Values, immediately followed by as many bits as the size of floatValues.

For example, should bytes[0] = 0x4C (0b01001100) it means that:

• int32Values[0 and 1] are not valid sensor values
• int32Values[2 and 3] are valid sensor values
• int32Values[4 and 5] are not valid sensor values
• int32Values[6] is a valid sensor value
• int32Values[7] is not a valid sensor value
• int32Values[0 and 1] are not valid sensor values
• int32Values[2 and 3] are valid sensor values
• int32Values[4 and 5] are not valid sensor values
• int32Values[6] is a valid sensor value
• int32Values[7] is not a valid sensor value

If bytes[5] = 0x61 (0b01100001), then:

• int32Values[32] is a valid sensor value
• floatValues[0 thru 3] are invalid sensor values
• floatValues[4 and 5] are valid sensor values
• floatValues[6] is not a valid sensor value.

Change mode: ON_CHANGE
Access mode: READ
Enum type: N/A
Unit type: N/A
Release: Android 13

ON_CHANGE

Change mode:
Access mode: READ_WRITE/READ
Enum type: VehicleLightSwitch
Unit type:N/A
Release: Android 13

PARKING_BRAKE_AUTO_APPLY

Auto-apply parking brake. When true, this property indicates that the car's automatic parking brake is enabled. False indicates that the car's automatic parking brake feature is disabled. This property is often confused with PARKING_BRAKE_ON The difference being that PARKING_BRAKE_ON indicates if the actual parking brake is on or off whereas PARKING_BRAKE_AUTO_APPLY indicates if the automatic parking brake feature is enabled or disabled and does not describe the current state of the actual parking brake.

Change mode: ON_CHANGE
Access mode: READ
Enum type: N/A
Unit type: N/A
Release: Android 13

PARKING_BRAKE_ON

Parking brake state. When true, this property true indicates that the car's parking brake is engaged. False indicates the car's parking brake is disengaged.

Change mode: ON_CHANGE
Access mode: READ
Enum type: N/A
Unit type: N/A
Release: Android 13

PER_DISPLAY_BRIGHTNESS

Property to represent brightness of the displays which are controlled separately. Some cars have one or more displays whose brightness is controlled separately and this property is to inform the brightness of each passenger display. In cars where all displays' brightness is controlled together, they must use DISPLAY_BRIGHTNESS

Only one of PER_DISPLAY_BRIGHTNESS andPER_DISPLAY_BRIGHTNESS should be implemented. If both are available, PER_DISPLAY_BRIGHTNESS is used by AAOS.

The display port uniquely identifies a physical connector on the device for display output, ranging from 0 to 255.

• int32Values[0] Display port
• int32Values[1] Brightness

Change mode: ON_CHANGE
Access mode: READ_WRITE
Enum type: N/A
Unit type: N/A
Release: Android 14

PERF_ODOMETER

Current odometer value of the vehicle.

Change mode: CONTINUOUS
Access mode: READ
Enum type: N/A
Unit type: VehicleUnit:KILOMETER
Release: Android 13

PERF_REAR_STEERING_ANGLE

Rear bicycle model steering angle for vehicle. Angle is measured in degrees. Left is negative. This property is independent of the angle of the steering wheel. This property must communicate the angle of the rear wheels with respect to the vehicle, not the angle of the steering wheel.

Change mode: CONTINUOUS
Access mode: READ
Enum type: N/A
Unit type: VehicleUnit:DEGREES
Release: Android 13

PERF_STEERING_ANGLE

Front bicycle model steering angle for vehicle. Angle is measured in degrees. Left is negative. This property is independent of the angle of the steering wheel. This property must communicate the angle of the front wheels with respect to the vehicle, not the angle of the steering wheel.

Change mode: CONTINUOUS
Access mode: READ
Enum type: N/A
Unit type: VehicleUnit:DEGREES
Release: Android 13

PERF_VEHICLE_SPEED

Speed of the vehicle, The value must be positive when the vehicle is moving forward and negative when the vehicle is reversing. This value is independent of gear value (CURRENT_GEAR or GEAR_SELECTION). For example, if GEAR_SELECTION is GEAR_NEUTRAL, PERF_VEHICLE_SPEED is positive when the vehicle is moving forward, negative when reversing, and zero when not moving.

Change mode: CONTINUOUS
Access mode: READ
Unit type: N/A
Unit type: VehicleUnit:METER_PER_SEC
Release: Android 13

PERF_VEHICLE_SPEED_DISPLAY

Speed of the vehicle for displays, Some cars display a slightly slower speed on the speedometer than actual speed.

Change mode: CONTINUOUS
Access mode: READ
Enum type: N/A
Unit type: VehicleUnit:METER_PER_SEC
Release: Android 13

POWER_POLICY_GROUP_REQ

Defines a request to set the power policy group used to decide a default power policy per power status transition.

Change mode: ON_CHANGE
Access mode: READ
Enum type: N/A
Unit type: N/A
Release: Android 13

POWER_POLICY_REQ

Defines a request to apply power policy. VHAL sets this property to change car power policy. Car power policy service subscribes to this property and actually changes the power policy. The request is made by setting the VehiclePropValue with the ID of a power policy which is defined at /vendor/etc/automotive/power_policy.xml If the given ID is not defined, car power policy service ignores the request and the current power policy is maintained.

string: "sample_policy_id" // power policy ID

Change mode: ON_CHANGE
Access mode: READ
Enum type: N/A
Unit type: N/A
Release: Android 13

POWER_POLICY_GROUP_REQ

Defines a request to set the power policy group used to decide a default power policy per power status transition. VHAL sets this property with the ID of a power policy group to set the default power policy applied at power status transition. Power policy groups are defined at /vendor/etc/power_policy.xml. If the given ID is not defined, car power policy service ignores the request. Car power policy service subscribes to this property and sets the power policy group. The actual application of power policy takes place when the system power status changes and there is a valid mapped power policy for the new power status.

string: "sample_policy_group_id" // power policy group ID

Change mode: ON_CHANGE
Access mode: READ
Enum type: N/A
Unit type: N/A
Release: Android 13

RANGE_REMAINING

Range remaining. Meters remaining of fuel and charge. Range remaining shall account for all energy sources in a vehicle. For example, a hybrid car's range is the sum of the ranges based on fuel and battery. This property is defined as VehiclePropertyAccess.READ_WRITE because a navigation app could update the range if it has a more accurate estimate based on the upcoming route. This property can be implemented as VehiclePropertyAccess.READ only at the OEM's discretion.

Change mode: CONTINUOUS
Access mode: READ_WRITE
Enum type: N/A
Unit type: VehicleUnit:METER
Release: Android 13

READING_LIGHTS_STATE

Return the current status of reading lights.

Change mode: ON_CHANGE
Access mode: READ
Enum type: VehicleLightState
Unit type: N/A
Release: Android 13

READING_LIGHTS_SWITCH

Switch t control the reading lights. This may differ from READING_LIGHTS_STATE if the lights are on because a door is open or due to a voice command. For example, while the switch is in the off or automatic position. This property is defined as VehiclePropertyAccess.READ_WRITE, but OEMs can implement it as VehiclePropertyAccess.READonly.

REAR_FOG_LIGHTS_STATE

Return the current state of the rear fog lights. Only one of FOG_LIGHTS_STATE or REAR_FOG_LIGHTS_STATE can be implemented. See FOG_LIGHTS_STATE

Change mode: ON_CHANGE
Access mode: READ
Enum type: VehicleLightState
Unit type: N/A
Release: Android 13

REAR_FOG_LIGHTS_SWITCH

The setting that the user wants. Only one of FOG_LIGHTS_SWITCH or REAR_FOG_LIGHTS_SWITCH must be implemented. See FOG_LIGHTS_SWITCH to learn more. This property is defined as VehiclePropertyAccess.READ_WRITE, but OEMs can implement it as VehiclePropertyAccess.READonly.

Change mode: ON_CHANGE
Access mode: READ_WRITE/READ
Enum type: VehicleLightSwitch
Unit type: N/A
Release: Android 13

REMOVE_USER

Called by the Android System after an Android user was removed. The HAL can use this property to remove the equivalent user. This is write-only cal. The Android System is not expecting a reply from the HAL. Hence, this request should not fail. If the equivalent HAL user cannot be removed, then HAL should mark it as inactive or recover in another way.

The request is made by setting the VehiclePropValue with the contents defined by RemoveUserRequest For example, if system had 3 users (0, 10, and 11) and user 11 was removed, the request would be:

• int32[0] 42 // request id
• int32[1] 11 // (Android user id of the removed user)
• int32[2] 0 // (Android user flags of the removed user)
• int32[3] 10 // current user
• int32[4] 0 // current user flags (none)
• int32[5] 2 // number of users
• int32[6] 0 // first user (user 0)
• int32[7] 0 // first user flags (none)
• int32[8] 10 // second user (user 10)
• int32[9] 0 // second user flags (none)

Change mode: STATIC
Access mode: WRITE
Enum type: N/A
Unit type: N/A
Release: Android 13

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SEAT_AIRBAG_ENABLED

Represents feature to enable and disable a seat's ability to deploy airbag(s) when triggered (for example, in a collision). If true, it means the seat's airbags are enabled and, if triggered, they deploy. If true, the seat's airbags are disabled, and they do not deploy in any circumstances. This property does not indicate if the airbags are deployed.

This property can be set to VehiclePropertyAccess.READ read only for the purpose of regulation or safety concerns.

This property is defined as VehiclePropertyAccess.READ_WRITE, but OEMs can implement it as VehiclePropertyAccess.READ only.

Change mode: ON_CHANGE
Access mode: READ_WRITE/READ
Enum type: N/A
Unit type: N/A
Release: Android 14

SEAT_BACKREST_ANGLE_1_MOVE

Seat backrest angle 1 move. The maxInt32Value and minInt32Value in each VehicleAreaConfig must be defined. All integers between minInt32Value and maxInt32Value must be supported. The maxInt32Value represents the maximum movement speed of the seat backrest while angling forward. The minInt32Value represents the maximum movement speed of the seat backrest when reclining.

Larger absolute values, either positive or negative, indicate a faster movement speed. Once the seat backrest reaches the positional limit, the value must reset to 0. If the value for SEAT_BACKREST_ANGLE_1_MOVE is 0, no movement is occurring.

This property is represented in a specified range of relative movement speeds.

This property is defined as VehiclePropertyAccess.READ_WRITE, but OEMs can implement it as VehiclePropertyAccess.READ only.

Change mode: ON_CHANGE
Access mode: READ_WRITE/READ
Enum type: N/A
Unit type: N/A
Release: Android 13

SEAT_BACKREST_ANGLE_1_POS

Seat backrest angle 1 position. Backrest angle 1 is the actuator closest to the bottom of the seat. The maxInt32Value and minInt32Value in VehicleAreaConfig must be defined. All integers between minInt32Value and maxInt32Value must be supported. The minInt32Value indicates the seat backrest's full recline position with regard to the actuator at the bottom of the seat. The maxInt32Value indicates the seat backrest's most upright or forward position with regard to the actuator at the bottom of the seat.

Values between minInt32Value and maxInt32Value indicate a transition state between the full recline and the upright and forward positions.

This property is represented as a specified range of relative positions.

This property is defined as VehiclePropertyAccess.READ_WRITE, but OEMs can implement it as VehiclePropertyAccess.READ only.

Change mode: ON_CHANGE
Access mode: READ_WRITE/READ
Enum type: N/A
Unit type: N/A
Release: Android 13

SEAT_BACKREST_ANGLE_2_MOVE

Seat backrest angle 2 move. The maxInt32Value and minInt32Value in each VehicleAreaConfig must be defined. All integers between minInt32Value and maxInt32Value must be supported.

The maxInt32Value represents the maximum movement speed of the seat backrest while angling forward. The minInt32Value represents the maximum movement speed of the seat backrest while reclining.

Larger absolute values, positive or negative, indicate a faster movement speed. Once the seat backrest reaches the positional limit, the value must reset to 0. If the value for SEAT_BACKREST_ANGLE_2_MOVE is currently 0, no movement is underway.

This property is represented as a specified range of relative movement speeds.

This property is defined as VehiclePropertyAccess.READ_WRITE, but OEMs can implement it as VehiclePropertyAccess.READ only.

Change mode: ON_CHANGE
Access mode: READ_WRITE/READ
Enum type: N/A Unit type: N/A
Release: Android 13

SEAT_BACKREST_ANGLE_2_POS

Seat backrest angle 2 position. Backrest angle 2 is the next actuator up from the bottom of the seat.

The maxInt32Value and minInt32Value in VehicleAreaConfig must be defined. All integers between minInt32Value and maxInt32Value must be #0supported.

The minInt32Value indicates the seat backrest's full recline position with regard to the next actuator in the backrest from the one at the bottom of the seat (see SEAT_BACKREST_ANGLE_1_POS for details). maxInt32Value indicates the seat backrest's most upright and forward position with regard to the next actuator in the backrest from the one at the bottom of the seat (see SEAT_BACKREST_ANGLE_1_POS for details).

Values between minInt32Value and maxInt32Value indicate a transition state between the full recline and upright and forward positions.

This property is represented as a specified range of relative positions.

This property is defined as VehiclePropertyAccess.READ_WRITE, but OEMs can implement it as VehiclePropertyAccess.READ only.

Change mode: ON_CHANGE
Access mode: READ_WRITE/READ
Enum type: N/A
Unit type: N/A
Release: Android 13

SEAT_BELT_BUCKLED

Seatbelt buckled. True indicates belt is buckled. Write access indicates automatic seat buckling capabilities. This property is defined as VehiclePropertyAccess.READ_WRITE, but OEMs can implement it as VehiclePropertyAccess.READ only.

Change mode: ON_CHANGE
Access mode: READ_WRITE/READ
Enum type: N/A
Unit type: N/A
Release: Android 13

SEAT_BELT_HEIGHT_MOVE

Seatbelt height move. The maxInt32Value and minInt32Value in each VehicleAreaConfig must be defined. All integers between minInt32Value and maxInt32Value must be supported.

The maxInt32Value represents the maximum movement speed of the seat belt's shoulder anchor while moving up. The minInt32Value represents the maximum movement speed of the seat belt's shoulder anchor while moving down.

Larger absolute values, either positive or negative, indicate a faster movement speed. Once the seat belt reaches the positional limit, the value must reset to 0. If the value of SEAT_BELT_HEIGHT_MOVE is 0, no movement is underway.

This property is represented as a a specified range of relative movement speeds.

This property is defined as VehiclePropertyAccess.READ_WRITE, but OEMs can implement it as VehiclePropertyAccess.READ only.

Change mode: ON_CHANGE
Access mode: READ_WRITE/READ
Enum type: N/A
Unit type: N/A
Release: Android 13

SEAT_BELT_HEIGHT_POS

Seatbelt height position. Adjusts the shoulder belt anchor point.

The maxInt32Value and minInt32Value in VehicleAreaConfig must be defined. All integers between minInt32Value and maxInt32Value must be supported.

The minInt32Value indicates the seat belt's shoulder anchor is at its lowest position. The maxInt32Value indicates the seat belt's shoulder anchor is at its highest position.

Values between minInt32Value and maxInt32Value indicate a transition state between the lowest and highest positions.

This property is represented as a specified range of relative positions.

This property is defined as VehiclePropertyAccess.READ_WRITE, but OEMs can implement it as VehiclePropertyAccess.READ only.

Change mode: ON_CHANGE
Access mode: READ_WRITE/READ
Enum type: N/A
Unit type: N/A
Release: Android 13

SEAT_CUSHION_SIDE_SUPPORT_MOVE

Represents property for movement direction and speed of seat cushion side support.

The maxInt32Value and minInt32Value in each VehicleAreaConfig must be defined. All integers between minInt32Value and maxInt32Value must be supported.

The maxInt32Value represents the maximum movement speed of the seat cushion side support when growing wider (for example, support is decreasing). The minInt32Value represents the maximum movement speed of the seat cushion side support when growing narrower (for example, support is increasing).

Larger absolute values, either positive or negative, indicate a faster movement speed. Once the seat cushion side support reaches the positional limit, the value must reset to 0. If the value of SEAT_CUSHION_SIDE_SUPPORT_MOVE is 0, then no movement is occurring.

This property is represented as a specified range of relative movement speeds.

This property is defined as VehiclePropertyAccess.READ_WRITE, but OEMs can implement it as VehiclePropertyAccess.READ only.

Change mode: ON_CHANGE
Access mode: READ_WRITE/READ
Enum type: N/A
Unit type: N/A
Release: Android 14

SEAT_CUSHION_SIDE_SUPPORT_POS

Represents property for seat's hipside (bottom cushion's side) support position.

The maxInt32Value and minInt32Value in each VehicleAreaConfig must be defined. All integers between minInt32Value and maxInt32Value must be supported.

The maxInt32Value indicates the seat cushion side support is in its widest position (for example, least support). The minInt32Value indicates the seat cushion side support is in its thinnest position (for example, most support).

Values in between minInt32Value and maxInt32Value indicate a transition state between the thinnest and widest positions.

This property is represented as a specified range of relative positions.

This property is defined as VehiclePropertyAccess.READ_WRITE, but OEMs can implement it as only.

Change mode: ON_CHANGE
Access mode: READ_WRITE/READ
Enum type: N/A
Unit type: N/A
Release: Android 14

SEAT_DEPTH_MOVE

Seat depth move.

The maxInt32Value and minInt32Value in each VehicleAreaConfig must be defined. All integers between minInt32Value and maxInt32Value must be supported.

The maxInt32Value represents the maximum movement speed of the seat while getting deeper The minInt32Value represents the maximum movement speed of the seat while getting shallower.

Larger absolute values, either positive or negative, indicate a faster movement speed. Once the seat backrest reaches the positional limit, the value must reset to 0. If the value for SEAT_DEPTH_MOVE is currently 0, no movement is underway.

This property is represented as a specified range of relative movement speeds.

This property is defined as VehiclePropertyAccess.READ_WRITE, but OEMs can implement it as VehiclePropertyAccess.READ only.

Change mode: ON_CHANGE
Access mode: READ_WRITE
Enum type: N/A
Unit type: N/A
Release: Android 13

SEAT_DEPTH_POS

Seat depth position. Sets the seat depth, distance from back rest to front edge of seat.

The maxInt32Value and minInt32Value in VehicleAreaConfig must be defined. All integers between minInt32Value and maxInt32Value must be supported.

The minInt32Value indicates the seat is in its shallowest position (for example, the position with the smallest distance between the front edge of the seat cushion and the rear end of the seat).

The maxInt32Value indicates the seat is in its deepest position (for example, the position with the largest distance between the front edge of the seat cushion and the rear end of the seat).

Values in between minInt32Value and maxInt32Value indicate a transition state between the shallowest and deepest positions.

This property is represented as a specified range of relative positions.

This property is defined as VehiclePropertyAccess.READ_WRITE, but OEMs can implement it as only..

Change mode: ON_CHANGE
Access mode: READ_WRITE/READ
Enum type: N/A
Unit type: N/A
Release: Android 13

SEAT_EASY_ACCESS_ENABLED

Represents property for Seat easy access feature. If true, the seat is automatically adjusted to make it easier for the occupant to enter and exit the vehicle. Each area ID must map to the seat that the user is trying to enter/exit with the help of the easy access feature. This property is defined as VehiclePropertyAccess.READ_WRITE, but OEMs can implement it as only.

Change mode: ON_CHANGE
Access mode: READ_WRITE/READ
Enum type: N/A
Unit type: N/A
Release: Android 14

SEAT_FOOTWELL_LIGHTS_STATE

Represents property for the seat footwell lights state. SEAT_FOOTWELL_LIGHTS_STATE reflects the current state of the lights at any point in time. This is different from the function of SEAT_FOOTWELL_LIGHTS_SWITCH which represents the position of the switch controlling the lights.

Therefore, SEAT_FOOTWELL_LIGHTS_STATE may not match the value of SEAT_FOOTWELL_LIGHTS_SWITCH (for example, SEAT_FOOTWELL_LIGHTS_SWITCH=AUTOMATIC and SEAT_FOOTWELL_LIGHTS_SWITCH=ON).

This property should only be implemented if SEAT_FOOTWELL_LIGHTS_STATE 's value may be different from that of CABIN_LIGHTS_STATE.

For each supported area ID, the VehicleAreaConfig#supportedEnumValues must be defined unless all enum values of VehicleLightState are supported.

Change mode: ON_CHANGE
Access mode: READ
Enum type: VehicleLightState
Unit type: N/A
Release: Android 14

SEAT_FOOTWELL_LIGHTS_SWITCH

Represents property for the seat footwell lights switch. SEAT_FOOTWELL_LIGHTS_SWITCH represents the position of the switch controlling the lights. This is different from the function of SEAT_FOOTWELL_LIGHTS_STATE which reflects the current state of the lights at any point in time. Therefore, SEAT_FOOTWELL_LIGHTS_SWITCH may not match the value of SEAT_FOOTWELL_LIGHTS_STATE (for example, SEAT_FOOTWELL_LIGHTS_SWITCH=AUTOMATIC and SEAT_FOOTWELL_LIGHTS_SWITCH=ON).

This property should only be implemented if SEAT_FOOTWELL_LIGHTS_SWITCH's value may be different from that of CABIN_LIGHTS_SWITCH.

For each supported area ID, the VehicleAreaConfig#supportedEnumValues must be defined unless all enum values of VehicleLightSwitch are supported.

This property is defined as VehiclePropertyAccess.READ_WRITE, but OEMs can implement it as VehiclePropertyAccess.READ only.

Change mode: ON_CHANGE
Access mode: READ_WRITE/READ
Enum type: VehicleLightSwitch
Unit type: N/A
Release: Android 13

SEAT_FORE_AFT_MOVE

Seat fore and aft move. This property moves the entire seat forward/backward in the direction that it is facing.

The maxInt32Value and minInt32Value in each VehicleAreaConfig must be defined. All integers between minInt32Value and maxInt32Value must be supported.

The maxInt32Value represents the maximum movement speed of the seat while moving forward. The minInt32Value represents the maximum movement speed of the seat while moving backward.

Larger absolute values, either positive or negative, indicate a faster movement speed. Once the seat reaches the positional limit, the value must reset to 0. If the value of SEAT_FORE_AFT_MOVE is 0, no movement is occurring.

This property is represented as a specified range of relative movement speeds.

This property is defined as VehiclePropertyAccess.READ_WRITE, but OEMs can implement it as VehiclePropertyAccess.READ only.

Change mode: ON_CHANGE
Access mode: READ_WRITE/READ
Enum type: N/A
Unit type: N/A
Release: Android 13

SEAT_FORE_AFT_POS

Seat fore and aft position. Sets the seat position forward and backward.

The maxInt32Value and minInt32Value in VehicleAreaConfig must be defined. All integers between minInt32Value and maxInt32Value must be supported.

The minInt32Value indicates the seat is at its rearward-most linear position. The maxInt32Value indicates the seat is at its forward-most linear position. Values between minInt32Value and maxInt32Value indicate a transition state between the closest and farthest positions.

This property is represented as a specified range of relative positions.

This property is defined as VehiclePropertyAccess.READ_WRITE, but OEMs can implement it as VehiclePropertyAccess.READ only.

Change mode: ON_CHANGE
Access mode: READ_WRITE/READ
Enum type: N/A
Unit type: N/A
Release: Android 13

SEAT_HEADREST_ANGLE_MOVE

Headrest angle move. The maxInt32Value and minInt32Value in each VehicleAreaConfig must be defined. All integers between minInt32Value and maxInt32Value must be supported.

The maxInt32Value represents the maximum movement speed of the seat's headrest while moving into an upright or forward position. The minInt32Value represents the maximum movement speed of the seat's headrest while moving into a shallow position.

Larger absolute values, either positive or negative, indicate a faster movement speed. Once the seat's headrest reaches the positional limit, the value must reset to 0. If the value of SEAT_HEADREST_ANGLE_MOVE is 0, thenno movement is occurring.

This property is represented as a specified range of relative movement speeds.

This property is defined as VehiclePropertyAccess.READ_WRITE, but OEMs can implement it as only..

Change mode: ON_CHANGE
Access mode: READ_WRITE/READ
Enum type: N/A
Unit type: N/A
Release: Android 13

SEAT_HEADREST_ANGLE_POS

Headrest angle position. The maxInt32Value and minInt32Value in VehicleAreaConfig must be defined. All integers between minInt32Value and maxInt32Value must be supported.

The minInt32Value indicates the headrest is in its full recline position. The maxInt32Value indicates the headrest is in its most upright and forward position.

Values in between minInt32Value and maxInt32Value indicate a transition state between the full recline and most upright and forward positions.

This property is represented as a specified range of relative positions.

This property is defined as VehiclePropertyAccess.READ_WRITE, but OEMs can implement it as VehiclePropertyAccess.READ only.

Change mode: ON_CHANGE
Access mode: READ_WRITE/READ
Enum type: N/A
Unit type: N/A
Release: Android 13

SEAT_HEADREST_FORE_AFT_MOVE

Headrest fore and aft move. The maxInt32Value and minInt32Value in each VehicleAreaConfig must be defined. All integers between minInt32Value and maxInt32Value must be supported.

The maxInt32Value represents the maximum movement speed of the seat's headrest while moving forward. The minInt32Value represents the maximum movement speed of the seat's headrest while moving backward.

Larger absolute values, either positive or negative, indicate a faster movement speed. Once the seat's headrest reaches the positional limit, the value must reset to 0. If the value of SEAT_HEADREST_FORE_AFT_MOVE is 0, then no movement is occurring.

This property is represented as a specified range of relative movement speeds.

This property is defined as VehiclePropertyAccess.READ_WRITE, but OEMs can implement it as VehiclePropertyAccess.READ only.

Change mode: ON_CHANGE
Access mode: READ_WRITE/READ
Enum type: N/A
Unit type: N/A
Release: Android 13

SEAT_HEADREST_FORE_AFT_POS

Headrest fore and aft position. The maxInt32Value and minInt32Value in VehicleAreaConfig must be defined. All integers between minInt32Value and maxInt32Value must be supported.

The minInt32Value indicates the headrest is in its rearward-most linear position. The maxInt32Value indicates the headrest is in its forward-most linear position.

Values between minInt32Value and maxInt32Value indicate a transition state between the forward and backward positions.

This property is represented as a specified range of relative positions.

This property is defined as VehiclePropertyAccess.READ_WRITE, but OEMs can implement it as VehiclePropertyAccess.READ only.

Change mode: ON_CHANGE
Access mode: READ_WRITE/READ
Enum type: N/A
Unit type: N/A
Release: Android 13

SEAT_HEADREST_HEIGHT_MOVE

Headrest height move. The maxInt32Value and minInt32Value in each VehicleAreaConfig must be defined. All integers between minInt32Value and maxInt32Value must be supported.

The maxInt32Value represents the maximum movement speed of the seat's headrest while moving up. The minInt32Value represents the maximum movement speed of the seat's headrest while moving down.

Larger absolute values, either positive or negative, indicate a faster movement speed. Once the seat's headrest reaches the positional limit, the value must reset to 0. If the value for SEAT_HEADREST_HEIGHT_MOVE is 0, then no movement is occurring.

This property is represented as a specified range of relative movement speeds.

This property is defined as VehiclePropertyAccess.READ_WRITE, but OEMs can implement it as VehiclePropertyAccess.READ only.

Change mode: ON_CHANGE
Access mode: READ_WRITE/READ
Enum type: N/A
Unit type: N/A
Release: Android 13

SEAT_HEADREST_HEIGHT_POS

(Deprecated) Headrest height position.

Change mode: ON_CHANGE
Access mode: READ_WRITE/READ
Enum type: N/A
Unit type: N/A
Release: Android 13

SEAT_HEADREST_HEIGHT_POS_V2

Headrest height position. Sets the headrest height for supported seats. VehiclePropConfig.areaConfigs specifies which seats are supported.

The maxInt32Value and minInt32Value in VehicleAreaConfig must be defined. All integers between minInt32Value and maxInt32Value must be supported.

The minInt32Value indicates the headrest is in its lowest position. The maxInt32Value indicates the headrest is in its highest position.

Values in between minInt32Value and maxInt32Value indicate a transition state between the lowest and highest positions.

This property is represented as a specified range of relative positions.

This property is defined as VehiclePropertyAccess.READ_WRITE, but OEMs can implement it as VehiclePropertyAccess.READ only.

Change mode: ON_CHANGE
Access mode: READ_WRITE/READ
Enum type: N/A
Unit type: N/A
Release: Android 14

SEAT_HEIGHT_MOVE

Seat height move. The maxInt32Value and minInt32Value in each VehicleAreaConfig must be defined. All integers between minInt32Value and maxInt32Value must be supported.

maxInt32Value represents the maximum movement speed of the seat when moving up.

minInt32Value represents the maximum movement speed of the seat when moving down.

Larger absolute values, either positive or negative, indicate a faster movement speed. Once the seat reaches the positional limit, the value must reset to 0. If the value of SEAT_HEIGHT_MOVE value is 0, no movement is occurring.

This property is represented as a specified range of relative movement speeds.

This property is defined as VehiclePropertyAccess.READ_WRITE, but OEMs can implement it as VehiclePropertyAccess.READ only.

Change mode: ON_CHANGE
Access mode: READ_WRITE/READ
Enum type: N/A
Unit type: N/A
Release: Android 13

SEAT_HEIGHT_POS

Seat height position. The maxInt32Value and minInt32Value in VehicleAreaConfig must be defined. All integers between minInt32Value and maxInt32Value must be supported.

The minInt32Value indicates the seat is in its lowest position. The maxInt32Value indicates the seat is in its highest position.

Values in between minInt32Value and maxInt32Value indicate a transition state between the lowest and highest positions.

This property is represented as a specified range of relative positions.

This property is defined as VehiclePropertyAccess.READ_WRITE, but OEMs can implement it as VehiclePropertyAccess.READ only.

Change mode: ON_CHANGE
Access mode: READ_WRITE/READ
Enum type: N/A
Unit type: N/A
Release: Android 13

SEAT_LUMBAR_FORE_AFT_MOVE

Lumbar fore and aft move. The maxInt32Value and minInt32Value in each VehicleAreaConfig must be defined. All integers between minInt32Value and maxInt32Value must be supported.

The maxInt32Value represents the maximum movement speed of the seat's lumbar support while moving forward. The minInt32Value represents the maximum movement speed of the seat's lumbar support while moving backward.

Larger absolute values, either positive or negative, indicate a faster movement speed. Once the seat's lumbar support reaches the positional limit, the value must reset to 0. If the value of SEAT_LUMBAR_FORE_AFT_MOVE is 0, then no movement is occurring.

This property is represented as a specified range of relative movement speeds.

This property is defined as VehiclePropertyAccess.READ_WRITE, but OEMs can implement it as VehiclePropertyAccess.READ only.

Change mode: ON_CHANGE
Access mode: READ_WRITE/READ
Enum type: N/A
Unit type: N/A
Release: Android 13

SEAT_LUMBAR_FORE_AFT_POS

Lumber fore and aft position. The maxInt32Value and minInt32Value in VehicleAreaConfig must be defined. All integers between minInt32Value and maxInt32Value must be supported.

The minInt32Value indicates the lumbar support is in its rearward most position (for example, least supportive position). The maxInt32Value indicates the lumbar support is in its forward most position (for example, most supportive position).

Values in between minInt32Value and maxInt32Value indicate a transition state between the forward and rearward positions.

This property is represented as a specified range of relative positions.

This property is defined as VehiclePropertyAccess.READ_WRITE, but OEMs can implement it as VehiclePropertyAccess.READ only.

Change mode: ON_CHANGE
Access type: READ_WRITE/READ
Enum type: N/A
Unit type: N/A
Release: Android 13

SEAT_LUMBAR_SIDE_SUPPORT_MOVE

Lumbar side support move. The maxInt32Value and minInt32Value in each VehicleAreaConfig must be defined. All integers between minInt32Value and maxInt32Value must be supported.

The maxInt32Value represents the maximum movement speed of the seat's lumbar side support while getting wider. The minInt32Value represents the maximum movement speed of the seat's lumbar side support while getting thinner.

Larger absolute values, either positive or negative, indicate a faster movement speed. Once the seat's lumbar side support reaches the positional limit, the value must reset to 0. If the value of SEAT_LUMBAR_SIDE_SUPPORT_MOVE 0, then no movement is occurring.

This property is represented as a specified range of relative movement speeds.

This property is defined as VehiclePropertyAccess.READ_WRITE, but OEMs can implement it as VehiclePropertyAccess.READ only.

Change mode: ON_CHANGE
Access type: READ_WRITE/READ
Enum type: N/A
Unit type: N/A
Release: Android 13

SEAT_LUMBAR_SIDE_SUPPORT_POS

Lumbar side support position. The maxInt32Value and minInt32Value in VehicleAreaConfig must be defined. All integers between minInt32Value and maxInt32Value must be supported. The minInt32Value indicates the lumbar side support is in its thinnest position (for example, most support). The maxInt32Value indicates the lumbar side support is in its widest position (for example, least support).

Values in between minInt32Value and maxInt32Value indicate a transition state between the thinnest and widest positions.

This property is represented as a specified range of relative positions.

This property is defined as VehiclePropertyAccess.READ_WRITE, but OEMs can implement it as VehiclePropertyAccess.READ only.

Change mode: ON_CHANGE
Access type: READ_WRITE/READ
Enum type: N/A
Unit type: N/A
Release: Android 14

SEAT_LUMBAR_VERTICAL_MOVE

Represents property for vertical movement direction and speed of seat lumbar support.

The maxInt32Value and minInt32Value in each VehicleAreaConfig must be defined. All integers between minInt32Value and maxInt32Value must be supported. The maxInt32Value indicates the lumbar support is moving at the fastest upward speed. The minInt32Value indicates the lumbar support is moving at the fastest down speed.

Larger absolute values, either positive or negative, indicate a faster movement speed. Once the seat cushion side support reaches the positional limit, the value must reset to 0. If the value of SEAT_LUMBAR_VERTICAL_MOVE's is 0, then no movement is occurring.

This property is represented as a specified range of relative movement speeds.

This property is defined as VehiclePropertyAccess.READ_WRITE, but OEMs can implement it as VehiclePropertyAccess.READ only.

Change mode: ON_CHANGE
Access mode: READ_WRITE/READ
Enum type: N/A
Unit type: N/A
Release: Android 14

SEAT_LUMBAR_VERTICAL_POS

Represents property for seat's lumbar support vertical position. The maxInt32Value and minInt32Value in each VehicleAreaConfig must be defined. All integers between minInt32Value and maxInt32Value must be supported. maxInt32Value indicates the lumbar support's highest position. minInt32Value indicates the lumbar support's lowest position.

Values in between minInt32Value and maxInt32Value indicate a transition state between the lowest and highest positions.

This property is represented as a specified range of relative positions.

This property is defined as VehiclePropertyAccess.READ_WRITE, but OEMs can implement it as VehiclePropertyAccess.READ only.

Change mode: ON_CHANGE
Access mode: READ_WRITE/READ
Enum type: N/A
Unit type: N/A
Release: Android 13

SEAT_MEMORY_SELECT

This parameter selects the memory preset to use to select the seat position. The maxInt32Value and minInt32Value in VehicleAreaConfig must be defined. All integers between minInt32Value and maxInt32Value must be supported. The minInt32Value is always 0, and the maxInt32Value determines the number of seat preset memory slots available (for example, numSeatPresets - 1). For instance, if the driver's seat has three memory presets, the maxInt32Value is two. When the user selects a preset, the desired preset number (0, 1, or 2) is set.

Change mode: ON_CHANGE
Access mode: WRITE
Enum type: N/A
Unit type: N/A
Release: Android 13

SEAT_MEMORY_SET

This setting allows the user to save the current seat position settings into the selected preset slot. The maxInt32Value and minInt32Value in VehicleAreaConfig must be defined. The minInt32Value must be 0, and the maxInt32Value for each seat position must match the maxInt32Value for SEAT_MEMORY_SELECT

Change mode: ON_CHANGE
Access mode: WRITE
Enum type: N/A
Unit type: N/A
Release: Android 13

SEAT_OCCUPANCY

Indicates if a specific seat is occupied, to the best of the car's ability to determine. Valid values are from the VehicleSeatOccupancyState enum.

Change mode: ON_CHANGE
Access mode: READ
Enum type: VehicleSeatOccupancyState
Unit type: N/A
Release: Android 13

SEAT_TILT_MOVE

Seat tilt move. The maxInt32Value and minInt32Value in each VehicleAreaConfig must be defined. All integers between minInt32Value and maxInt32Value must be supported. The maxInt32Value represents the maximum movement speed of the front edge of the seat while moving up. The minInt32Value represents the maximum movement speed of the front edge of the seat while moving down.

Larger absolute values, either positive or negative, indicate a faster movement speed. Once the seat bottom reaches the positional limit, the value must reset to 0. If SEAT_TILT_MOVE's value is currently 0, no movement is underway.

This property is represented as a specified range of relative movement speeds.

This property is defined as VehiclePropertyAccess.READ_WRITE, but OEMs can implement it as VehiclePropertyAccess.READ only.

Change mode: ON_CHANGE
Access mode: READ_WRITE/READ
Enum type: N/A
Unit type: N/A
Release: Android 13

SEAT_TILT_POS

Seat tilt position. The maxInt32Value and minInt32Value in VehicleAreaConfig must be defined. All integers between minInt32Value and maxInt32Value must be supported. The minInt32Value indicates the seat bottom is angled at its lowest angular position. This corresponds to the seat's front edge at its lowest possible position relative to the rear end of the seat. The maxInt32Value indicates the seat bottom is angled at its highest angular position. This corresponds to the seat's front edge at its highest possible position relative to the rear end of the seat.

Values in between minInt32Value and maxInt32Value indicate a transition state between the lowest and highest positions.

This property is represented as a specified range of relative positions.

This property is defined as VehiclePropertyAccess.READ_WRITE, but OEMs can implement it as VehiclePropertyAccess.READ only.

Change mode: ON_CHANGE
Access mode: READ_WRITE/READ
Enum type: N/A
Unit type: N/A
Release: Android 14

SEAT_WALK_IN_POS

Represents property that indicates the current walk-in position of the seat. The minInt32Value indicates the normal seat position. The minInt32Value must be 0. The maxInt32Value indicates the seat is in the full walk-in position.

Values in between minInt32Value and maxInt32Value indicate a transition state between the normal and walk-in positions.

This property is represented as a specified range of relative positions.

The area ID must match the seat that actually moves when the walk-in feature activates, not the intended seat the passengers will sit in.

This property is defined as VehiclePropertyAccess.READ_WRITE, but OEMs can

Change mode: ON_CHANGE
Access mode: READ_WRITE/READ
Enum type: N/A
Unit type: N/A
Release: Android 13

SHUTDOWN_REQUEST

Request the head unit to be shu down.

This is required for executing a task when the head unit is powered off (remote task feature). After the head unit is powered-on to execute the task, the head unit should be shut down. The head unit sends this message once the task is finished.

This property doesn't apply when a user wants to shut down the head unit.

This usually involves telling a separate system outside the head unit (for instance a power controller) to prepare to shut down the head unit.

The external system must validate that this request is valid by checking if the vehicle is in use. If a user enters the vehicle after a SHUTDOWN_REQUEST is sent, then the system must ignore this request. It is recommended to store a VehicleInUse property in the power controller and exposes it through VEHICLE_IN_USE property. A shutdown request must be ignored if VehicleInUse is true.

If allowed, the external system sends a shutdown signal to the head unit, which causes VHAL to send SHUTDOWN_PREPARE message to Android. Android will then start the shut down process by handling the message.

This property is only for issuing a request and only supports writing. Every time this property value is set, the request to shutdown is issued no matter what the current property value is. The current property value is meaningless.

Since this property is write-only, subscribing is not allowed and no property change event is generated.

The value to set indicates the shutdown option, it must be one of {@code VehicleApPowerStateShutdownParam} For example, VehicleApPowerStateShutdownParam.SLEEP_IMMEDIATELY. This shutdown option might not be honored if the system doesn't support such option. In such a case, an error is not returned.

For configuration information, VehiclePropConfig.configArray must have bit flag combining values in {@code VehicleApPowerStateConfigFlag} to indicate which shutdown options are supported.

Returns error if failed to send the shutdown request to the other system.

Change mode: ON_CHANGE
Access mode: WRITE
Enum type: VehicleApPowerStateShutdownParam>
Unit type: N/A
Release: Android 14

STEERING_WHEEL_DEPTH_MOVE

Steering wheel depth movement. The maxInt32Value and minInt32Value in VehicleAreaConfig must be defined. All values between minInt32Value and maxInt32Value must be supported.

The maxInt32Value indicates the steering wheel moving away from the driver. The minInt32Value indicates the steering wheel moving towards the driver.

Larger integers, either positive or negative, indicate a faster movement speed. Once the steering wheel reaches the positional limit, the value must reset to 0. If the value of STEERING_WHEEL_DEPTH_MOVE is currently 0, no movement is underway.

This property is represented as a specified range of relative movement speeds.

This property is defined as VehiclePropertyAccess.READ_WRITE, but OEMs can implement it as VehiclePropertyAccess.READ only.

Change mode: ON_CHANGE
Access mode: READ_WRITE/READ
Enum type: N/A
Unit type: N/A
Release: Android 14

STEERING_WHEEL_DEPTH_POS

Steering wheel depth position. All steering wheel properties' unique ids start from 0x0BE0.

The maxInt32Value and minInt32Value in VehicleAreaConfig must be defined. All values between minInt32Value and maxInt32Value must be supported. The maxInt32Value indicates the steering wheel position furthest from the driver. The minInt32Value indicates the steering wheel position closest to the driver.

Values in between minInt32Value and maxInt32Value indicate a transition state between the

This property is represented as a specified range of relative positions.

This property is defined as VehiclePropertyAccess.READ_WRITE, but OEMs can implement it as VehiclePropertyAccess.READ only.

Change mode: ON_CHANGE
Access mode: READ_WRITE/READ
Enum type: N/A
Unit type: N/A
Release: Android 14

STEERING_WHEEL_EASY_ACCESS_ENABLED

Steering wheel easy access feature enabled. If true, the driver's steering wheel is automatically adjusted to make it easier for the driver to enter and exit the vehicle.

This property is defined as VehiclePropertyAccess.READ_WRITE, but OEMs can implement it as VehiclePropertyAccess.READ only.

Change mode: ON_CHANGE
Access mode: READ_WRITE/READ
Enum type: N/A
Unit type: N/A
Release: Android 14

STEERING_WHEEL_HEIGHT_MOVE

Steering wheel height movement. The maxInt32Value and minInt32Value in VehicleAreaConfig must be defined. All values between minInt32Value and maxInt32Value must be supported.

The maxInt32Value indicates the steering wheel moving up. The minInt32Value indicates the steering wheel moving down.

Larger integers, either positive or negative, indicate a faster movement speed. Once the steering wheel reaches the positional limit, the value must reset to 0. If STEERING_WHEEL_HEIGHT_MOVE's value is currently 0, then that means there is no movement currently occurring.

This property is represented as a specified range of relative movement speeds.

This property is defined as VehiclePropertyAccess.READ_WRITE, but OEMs can implement it as VehiclePropertyAccess.READ only.

Change mode: ON_CHANGE
Access mode: READ_WRITE/READ
Enum type: N/A
Unit type: N/A
Release: Android 14

STEERING_WHEEL_HEIGHT_POS

Steering wheel height position.

The maxInt32Value and minInt32Value in VehicleAreaConfig must be defined. All values between minInt32Value and maxInt32Value must be supported. The maxInt32Value indicates the steering wheel being in the highest position. The minInt32Value indicates the steering wheel being in the lowest position.

Values in between minInt32Value and maxInt32Value indicate a transition state between the lowest and highest positions.

This property is represented as a specified range of relative positions.

This property is defined as VehiclePropertyAccess.READ_WRITE, but OEMs can implement it as VehiclePropertyAccess.READ only.

Change mode: ON_CHANGE
Access mode: READ_WRITE/READ
Enum type: N/A
Unit type: N/A
Release: Android 14

STEERING_WHEEL_LIGHTS_STATE

Steering wheel lights state. Represents the current state of the steering wheel lights. This is different from STEERING_WHEEL_LIGHTS_SWITCH which represents the position of the switch controlling the lights. Therefore, STEERING_WHEEL_LIGHTS_STATE may not match the value of STEERING_WHEEL_LIGHTS_SWITCH (for example, STEERING_WHEEL_LIGHTS_SWITCH=AUTOMATIC and STEERING_WHEEL_LIGHTS_STATE=ON).

This property should only be implemented if STEERING_WHEEL_LIGHTS_STATE's value may be different from that of CABIN_LIGHTS_STATE.

For the global area ID (0), the VehicleAreaConfig#supportedEnumValues must be defined unless all enum values of VehicleLightState are supported.

Change mode: ON_CHANGE
Access mode: READ
Enum type: VehicleLightState
Unit type: N/A
Release: Android 14

STEERING_WHEEL_LIGHTS_SWITCH

Steering wheel lights switch. Represents the position of the switch controlling the steering wheel lights. This differs from , which represents the current state of the steering wheel lights. Therefore, STEERING_WHEEL_LIGHTS_SWITCH may not match the value of STEERING_WHEEL_LIGHTS_STATE. For example, STEERING_WHEEL_LIGHTS_SWITCH=AUTOMATIC and STEERING_WHEEL_LIGHTS_STATE=ON.

This property should only be implemented if the value for STEERING_WHEEL_LIGHTS_SWITCH can differ from that of CABIN_LIGHTS_SWITCH.

For the global area ID (0), the VehicleAreaConfig#supportedEnumValues must be defined unless all enum values of VehicleLightSwitch are supported.

This property is defined as VehiclePropertyAccess.READ_WRITE, but OEMs can implement it as VehiclePropertyAccess.READ only.

Change mode: ON_CHANGE
Access mode: READ_WRITE/READ
Enum type: VehicleLightSwitch
Unit type: N/A
Release: Android 14

STEERING_WHEEL_LOCKED

Steering wheel locked. If true, the steering wheel's position is locked and not changeable. This property is defined as VehiclePropertyAccess.READ_WRITE, but OEMs can implement it as only./p>

Change mode: ON_CHANGE
Access mode: READ_WRITE/READ
Enum type: N/A
Unit type: N/A
Release: Android 14

STEERING_WHEEL_THEFT_LOCK_ENABLED

Steering wheel theft lock feature enabled. If true, the steering wheel locks automatically to prevent theft in certain situations. This property is defined as VehiclePropertyAccess.READ_WRITE, but OEMs can implement it as VehiclePropertyAccess.READ only.

Change mode: ON_CHANGE
Access mode: READ_WRITE/READ
Enum type: N/A
Unit type: N/A
Release: Android 14

STORAGE_ENCRYPTION_BINDING_SEED

External encryption binding seed. This value is mixed with the local key storage encryption key. This property holds 16 bytes, and is expected to be persisted on an ECU separate from the IVI. The property is initially set by AAOS, who generates it using a CSRNG. AAOS then reads the property on subsequent boots. The binding seed is expected to be reliably persisted. Any loss of the seed results in a factory reset of the IVI.

Change mode: ON_CHANGE
Access mode: READ_WRITE
Enum type: N/A
Unit type: N/A
Release: Android 13

SUPPORT_CUSTOMIZE_VENDOR_PERMISSION

Support customize permissions for vendor properties.

Implement this property if VHAL support customize vendor permissions feature. VehiclePropConfig.configArray is used to indicate vendor properties and permissions which selected for this vendor property. The permission must be one of enum in VehicleVendorPermission. The configArray is set as follows, configArray[n]: propId : property ID for the vendor property where configArray[n+1] is an enum in VehicleVendorPermission and indicates the permission for reading the value of the property.

configArray[n+2] is an enum in VehicleVendorPermission and indicates the permission for writing a value of the property. For example:

configArray: { vendor_prop_1, PERMISSION_VENDOR_SEAT_READ, PERMISSION_VENDOR_SEAT_WRITE, vendor_prop_2, PERMISSION_VENDOR_INFO, PERMISSION_NOT_ACCESSIBLE, }

If vendor properties are not in this array, they have the default vendor permission. If vendor chose PERMISSION_NOT_ACCESSIBLE, Android does not have access to the property. In the example, Android can not write a value for vendor_prop_2.

Change mode: STATIC
Access mode: READ
Enum type: N/A
Unit type: N/A
Release: Android 13

SUPPORTED_PROPERTY_IDS

(Deprecated) List of all supported property IDs.

Change mode: STATIC
Access mode: READ
Enum type: N/A
Unit type: N/A
Release: Android 14

SWITCH_USER

Defines a request to switch the foreground Android user.

This property is used primarily by the Android system to inform the HAL that the current foreground Android user is switching, but it could also be used by the HAL to request the Android system to switch users. When the request is made by Android, it sets a VehiclePropValue and the HAL must respond with a property change event. When the HAL makes the request, it must also do it through a property change event (the main difference is that the request id is positive in the former case, and negative in the latter). The SwitchUserMessageType also differs.

• LEGACY_ANDROID_SWITCH Called by the Android system to indicate the Android user is about to change, when the change request was made in a way that is not integrated with the HAL (for example, through adb shell am switch-user). The HAL can switch its internal user once it receives this request, but it doesn't need to reply back to the Android system. If its internal user cannot be changed for some reason, then it must wait for the SWITCH_USER(type=ANDROID_POST_SWITCH) call to recover (for example, it could issue a SWITCH_USER(type=VEHICLE_REQUEST) to switch back to the previous user). Ideally it should never fail (as switching back could confuse the end user).
  For example, if the system have users (0, 10, 11) and it's switching from 0 to 11 (where none of them have any special flag), the request would be:
  
  • int32[0] 42 // request id
  • int32[1] 1 // SwitchUserMessageType::LEGACY_ANDROID_SWITCH
  • int32[2] 11 // target user id
  • int32[3] 0 // target user flags (none)
  • int32[4] 10 // current user
  • int32[5] 0 // current user flags (none)
  • int32[6] 3 // number of users
  • int32[7] 0 // user #0 (Android user id 0)
  • int32[8] 0 // flags of user #0 (none)
  • int32[9] 10 // user #1 (Android user id 10)
  • int32[10] 0 // flags of user #1 (none)
  • int32[11] 11 // user #2 (Android user id 11)
  • int32[12] 0 // flags of user #2 (none)
• ANDROID_SWITCH Called by the Android system to indicate the Android user is about to change, but Android waits for the HAL's response (up to some time) before proceeding. The HAL must switch its internal user once it receives this request, then respond back to Android with a SWITCH_USER(type=VEHICLE_RESPONSE) indicating whether its internal user was switched or not (through the SwitchUserStatus enum). For example, if Android has users (0, 10, 11) and it's switching from 10 to 11 (where none of them have any special flag), the request would be:
  • int32[0] 42 // request id
  • int32[1] 2 // SwitchUserMessageType::ANDROID_SWITCH
  • int32[2] 11 // target user id
  • int32[3] 0 // target user flags (none)
  • int32[4] 10 // current user
  • int32[5] 0 // current user flags (none)
  • int32[6] 3 // number of users
  • int32[7] 0 // first user (user 0)
  • int32[8] 1 // first user flags (SYSTEM)
  • int32[9] 10 // second user (user 10)
  • int32[10] 0 // second user flags (none)
  • int32[11] 11 // 3rd user (user 11)
  • int32[12] 0 // 3rd user flags (none)

  If the request succeeds, the HAL must update the property with:

  • int32[0] 42 // request id
  • int32[1] 3 // messageType: SwitchUserMessageType::VEHICLE_RESPONSE
  • int32[2] 1 // status: SwitchUserStatus::SUCCESS

  If the request fails, the response would be something like:

  • int32[0] 42 // request id
  • int32[1] 3 // messageType: SwitchUserMessageType::VEHICLE_RESPONSE
  • int32[2] 2 // status: SwitchUserStatus::FAILURE string: "108-D'OH!"
  • OEM-specific error message
• VEHICLE_RESPONSE Called by the HAL to indicate whether a request of type ANDROID_SWITCH should proceed or abort. See also ANDROID_SWITCH.
• VEHICLE_REQUEST Called by the HAL to request that the current foreground Android user is switched. This is useful in situations where Android started as one user, but the vehicle identified the driver as another user. For example, user A unlocked the car using the key fob of user B. The INITIAL_USER_INFO request returned user B, but then a face recognition subsubsystem identified the user as A. The HAL makes this request by a property change event (passing a negative request id), and the Android system response is to issue an ANDROID_POST_SWITCH call which the same request id. For example, if the current foreground Android user is 10 and the HAL asked to switch to 11, the request would be:
  • int32[0] -108 // request id
  • int32[1] 4 // messageType: SwitchUserMessageType::VEHICLE_REQUEST
  • int32[2] 11 // Android user id

  If the request succeeded and Android has three users (0, 10, and 11), the response would be:

  • int32[0] -108 // request id
  • int32[1] 5 // messageType: SwitchUserMessageType::ANDROID_POST_SWITCH
  • int32[2] 11 // target user id
  • int32[3] 0 // target user id flags (none)
  • int32[4] 11 // current user
  • int32[5] 0 // current user flags (none)
  • int32[6] 3 // number of users
  • int32[7] 0 // first user (user 0)
  • int32[8] 0 // first user flags (none)
  • int32[9] 10 // second user (user 10)
  • int32[10] 4 // second user flags (none)
  • int32[11] 11 // third user (user 11)
  • int32[12] 3 // third user flags (none)

  The current and target user ids are the same. If the request fails, then they would differ. For example, the target user would be 11 and the current user would remain 10.

• ANDROID_POST_SWITCH Called by the Android system after a request to switch a user was made. This property is called after switch requests of any type (for example, >code>LEGACY_ANDROID_SWITCH, >code>ANDROID_SWITCH, or VEHICLE_REQUEST) and can be used to determine if the request succeeded or failed.
  • When it succeeds, it's called when the Android user is in the unlocked state and the value of the current and target users ids in the response are the same. This is equivalent to receiving an Intent.ACTION_USER_UNLOCKED in an Android app.
  • When it fails, it's called right away and the value of the current and target users ids in the response differ (since the current user didn't change to the target).
  • If a new switch request is made before the HAL responded to the previous one or before the user was unlocked, then the ANDROID_POST_SWITCH request is not made. For example, the driver might accidentally switch to the wrong user, which has lock credentials, and then switch to the correct user before entering the credentials.

  The HAL can update its internal state once it receives this request, but it needn't reply to the Android system.

  • Request. The first N values as defined by INITIAL_USER_INFO (where the request-specific value at index 1 is SwitchUserMessageType::ANDROID_POST_SWITCH), then two more values for the target user id (for example, the Android user id that was requested to be switched to) and its flags (as defined by UserFlags).
  • Response: none. For example, see VEHICLE_REQUEST

Change mode: ON_CHANGE
Access mode: READ_WRITE
Enum type: N/A
Unit type: N/A
Release: Android 13

TIRE_PRESSURE

Tire pressure. Each tire is identified by its areaConfig.areaId config. The respective minFloatValue and maxFloatValue are used to store the OEM- recommended pressure range. Values for minFloatValue and maxFloatValue in VehicleAreaConfig must be defined.

The minFloatValue in the areaConfig data represents the lower bound of the recommended tire pressure. The maxFloatValue in the areaConfig data represents the upper bound of the recommended tire pressure. For example, this areaConfig indicates the recommended tire pressure of left_front tire as from 200.0kPa to 240.0kPa.

.areaConfigs: { VehicleAreaConfig { .areaId: VehicleAreaWheel::LEFT_FRONT, .minFloatValue: 200.0, .maxFloatValue: 240.0, } }

Change mode: CONTINUOUS
Access mode: READ
Enum type: N/A
Unit type: VehicleUnit:KILOPASCAL
Release: Android 13

TIRE_PRESSURE_DISPLAY_UNITS

Tire pressure units for display. Indicates which units the car is using to display tire pressure to the user. For example, PSI, Bar or Kilopascal. VehiclePropConfig.configArray is used to indicate the supported pressure display units. Pressure units are defined in VehicleUnit. For example, configArray[0]: KILOPASCAL configArray[1]: PSI configArray[2]: BAR

If updating TIRE_PRESSURE_DISPLAY_UNITS affects the values of other *_DISPLAY_UNITS properties, then their values must be updated and communicated to the AAOS framework as well. This property is defined as VehiclePropertyAccess.READ_WRITE, but OEMs can implement it as only./p>

Change mode: ON_CHANGE
Access mode: READ_WRITE/READ
Enum type: VehicleUnit
Unit type: N/A
Release: Android 13

TRACTION_CONTROL_ACTIVE

Set to true when traction control (TC) is active and reset to false when TC is off. This property can be intermittently set (pulse) based on the real-time state of the TC system.

Change mode: ON_CHANGE
Access mode: READ
Enum type: N/A
Unit type: N/A
Release: Android 13

TRAILER_PRESENT

Returns the trailer state of the car.

Change mode: ON_CHANGE
Access mode: READ
Enum type: TrailerState
Unit type: N/A
Release: Android 13

TURN_SIGNAL_STATE

State of the vehicles turn signals.

Change mode: ON_CHANGE
Access mode: READ
Enum type: VehicleTurnSignal
Unit type: N/A
Release: Android 13

USER_IDENTIFICATION_ASSOCIATION

Property used to associate (or query the association) the current user with vehicle-specific identification mechanisms (such as key FOB).

This is an optional user management property. The OEM can still support user management without defining it. In fact, this property could be used without supporting the core user-related functions described on INITIAL_USER_INFO.

To query the association, the Android system gets the property, passing a VehiclePropValue containing the types of associations are being queried, as defined by UserIdentificationGetRequest. The HAL must return right away, returning a VehiclePropValue with a UserIdentificationResponse.

Notice that user identification took place while the system was booting up. takehe VHAL implementation should only return the already identified association (such as the key FOB used to unlock the car), instead of starting a new association from the get call.

To associate types, the Android system sets the property, passing a VehiclePropValue containing the types and values of associations being set, as defined by the UserIdentificationSetRequest.

The HAL then uses a property change event (whose VehiclePropValue is defined by UserIdentificationResponse) indicating the current status of the types after the request.

For example, to query if the current user (10) is associated with the FOB that unlocked the car and a custom mechanism provided by the OEM, the request is:

• int32[0] 42 // request id
• int32[1] 10 (Android user id)
• int32[2] 0 (Android user flags)
• int32[3] 2 (number of types queried)
• int32[4] 1 (first type queried, UserIdentificationAssociationType::KEY_FOB)
• int32[5] 101 (second type queried, UserIdentificationAssociationType::CUSTOM_1)

If the user is associated with the FOB but not with the custom mechanism, the response is:

• int32[0] 42 // request id
• int32[1] 2 (number of associations in the response)
• int32[2] 1 (first type: UserIdentificationAssociationType::KEY_FOB)
• int32[3] 2 (first value: UserIdentificationAssociationValue::ASSOCIATED_CURRENT_USER)
• int32[4] 101 (first type: UserIdentificationAssociationType::CUSTOM_1)
• int32[5] 4 (second value: UserIdentificationAssociationValue::NOT_ASSOCIATED_ANY_USER)

Then to associate the user with the custom mechanism, a set request is made:

• int32[0] 43 // request id
• int32[1] 10 (Android user id)
• int32[2] 0 (Android user flags)
• int32[3] 1 (number of associations being set)
• int32[4] 101 (first type: UserIdentificationAssociationType::CUSTOM_1)

If the request succeeded, the response would be:

• int32[0] 43 // request id
• int32[1] 1 (number of associations in the response)
• int32[2] 101 (first type: UserIdentificationAssociationType::CUSTOM_1)
• int32[3] 1 (first value: UserIdentificationAssociationValue::ASSOCIATED_CURRENT_USER)

The set request adds associations but doesn't remove the existing associations. In the previous example, the end state would be two associations (FOB and CUSTOM_1). To associate the user with just CUSTOM_1 but not FOB, then the request would have been:

• int32[0] 43 // request id
• int32[1] 10 (Android user id)
• int32[2] 2 (number of types set)
• int32[3] 1 (first type: UserIdentificationAssociationType::KEY_FOB)
• int32[4] 2 (first value: UserIdentificationAssociationValue::DISASSOCIATE_CURRENT_USER)
• int32[5] 101 (second type: UserIdentificationAssociationType::CUSTOM_1)
• int32[6] 1 (second value: UserIdentificationAssociationValue::ASSOCIATE_CURRENT_USER)

Change mode: ON_CHANGE
Access mode: READ_WRITE
Enum type: N/A
Unit type: N/A
Release: Android 13

VEHICLE_CURB_WEIGHT

Returns the vehicle's curb weight in kilograms. Curb weight is the total weight of the vehicle with standard equipment and all necessary operating consumables such as motor oil, transmission oil, brake fluid, coolant, air conditioning refrigerant, and weight of fuel at nominal tank capacity while not loaded with either passengers or cargo.

configArray[0] is used to specify the vehicle's gross weight in kilograms. The vehicle's gross weight is the maximum operating weight of the vehicle as specified by the manufacturer including the vehicle's chassis, body, engine, engine fluids, fuel, accessories, driver, passengers and cargo but excluding that of any trailers.

Change mode: STATIC
Access mode: READ
Enum type: N/A
Unit type: VehicleUnit:KILOGRAM
Release: Android 13

VEHICLE_IN_USE

Indicates if the vehicle is in use. In use means a human user is present and intendeds to use the vehicle. This doesn't necessarily mean the human user is in the vehicle. For example, if the human user unlocks the vehicle remotely, the vehicle is considered to be in use. If this property is supported:

• Each time the user powers on the vehicle or the system detects the user is present, VEHICLE_IN_USE must be set to true. Each time the user powers off the vehicle or the system detects the user is not present, VEHICLE_IN_USE must be set to false.
• If the user powers off the vehicle or the system detects the user is not present, VEHICLE_IN_USE must be set to false.
• If the user powers on the vehicle or the system detects the user is present, VEHICLE_IN_USE must be set to true.

This property differs from AP_POWER_BOOTUP_REASON in the sense that AP_POWER_BOOTUP_REASON is only set once during system boot. However, this property might change multiple times during a system boot cycle. For example, a device is currently not in use. The system bootup to execute a remote task. VEHICLE_IN_USE is false. While the remote task is executing, the user enters the vehicle and powers on the vehicle. VEHICLE_IN_USE is set to true. After a driving session, user powers off the vehicle, VEHICLE_IN_USE is set to false.

This property is defined as VehiclePropertyAccess.READ_WRITE, but OEMs can implement it as VehiclePropertyAccess.READ only.

Change mode: ON_CHANGE
Access mode: READ_WRITE/READ
Enum type: N/A
Unit type: N/A
Release: Android 14

VEHICLE_MAP_SERVICE

Vehicle Maps Service (VMS) message. This property uses MIXED data to communicate VMS messages. Its contents are to be interpreted as follows. The indices defined in VmsMessageIntegerValuesInde are used to read from int32Values. bytes is a serialized VMS message as defined in the VMS protocol, which is opaque to the framework. IVehicle#get must always return StatusCode::NOT_AVAILABLE.

Change mode: ON_CHANGEREAD_WRITE
Access mode: READ_WRITE
Enum type: N/A
Unit type: N/A
Release: Android 13

VEHICLE_SPEED_DISPLAY_UNITS

Speed units for display. Indicates the type of units used to display speed to the user. For example, m/s, km/h, or mph. VehiclePropConfig.configArray indicates the supported speed display units. Pressure units are defined in VehicleUnit. For example:

.configArray: { VehicleUnit::METER_PER_SEC, VehicleUnit::KILOMETERS_PER_HOUR, VehicleUnit::MILES_PER_HOUR }

• configArray[0] METER_PER_SEC
• configArray[1] MILES_PER_HOUR
• configArray[2] KILOMETERS_PER_HOUR

If updating VEHICLE_SPEED_DISPLAY_UNITS affects the values of other *_DISPLAY_UNITS properties, then those values must be updated and communicated to the AAOS framework.

This property is defined as VehiclePropertyAccess.READ_WRITE, but OEMs can implement it as VehiclePropertyAccess.READ only.

Change mode: ON_CHANGE
Access mode: READ_WRITE/READ
Enum type: N/A
Unit type: N/A
Release: Android 13

VHAL_HEARTBEAT

Defines an event that VHAL signals to Car Watchdog as a heartbeat. If VHAL supports this property, VHAL should write system uptime to this property at every three seconds. Car Watchdog subscribes to this property and checks if the property is updated every three seconds. With the buffer time of three seconds, Car Watchdog waits for a heartbeat to be signaled up to six seconds from the last heartbeat. If not, Car Watchdog considers VHAL unhealthy and terminates it. If this property is not supported by VHAL, Car Watchdog doesn't check VHAL health status.

Change mode: ON_CHANGE
Access mode: READ
Enum type: N/A
Unit type: N/A
Release: Android 13

WATCHDOG_ALIVE

Defines an event that Car Watchdog updates to indicate it's active. Car Watchdog sets this property to system uptime in milliseconds at every three seconds. While booting, the update could take longer.

Change mode: ON_CHANGE
Access mode: WRITE
Enum type: N/A
Unit type: N/A
Release: Android 13

WATCHDOG_TERMINATED_PROCESS

Defines a process terminated by Car Watchdog and the reason for the termination.

int32Values[0] 1  // ProcessTerminationReason showing why a process is terminated. string: "/system/bin/log" // Process execution command

Change mode: ON_CHANGE
Access mode: WRITE
Enum type: N/A
Unit type: N/A
Release: Android 13

WHEEL_TICK

Reports wheel ticks. The first element in the vector is a reset count. A reset indicates previous tick counts are not comparable with this and future ones. Some sort of discontinuity in tick counting has occurred.

The next four elements represent ticks for individual wheels in the following order:

1. Front left
2. Front right
3. Rear right
4. Rear left

All tick counts are cumulative. Tick counts increment when the vehicle moves forward, and decrement when the vehicle moves backward. The ticks should be reset to 0 when the vehicle is started.

• int64Values[0] Reset count
• int64Values[1] Front left ticks
• int64Values[2] Front right ticks
• int64Values[3] Rear right ticks
• int64Values[4] Rear left ticks

configArray is used to indicate the micrometers-per-wheel-tick value and which wheels are supported configArray is set as follows:

configArray[0], bits [0:3] Supported wheels

Uses enum Wheel. For example, if all wheels are supported, then:

• configArray[0] VehicleAreaWheel::LEFT_FRONT | VehicleAreaWheel::RIGHT_FRONT | VehicleAreaWheel::LEFT_REAR | VehicleAreaWheel::RIGHT_REAR
• configArray[1] Micrometers per front left wheel tick
• configArray[2] Micrometers per front right wheel tick
• configArray[3] Micrometers per rear right wheel tick
• configArray[4] Micrometers per rear left wheel tick.

If a wheel is not supported, its value shall always be set to 0.

The VehiclePropValue.timestamp must be filled in.

Change mode: CONTINUOUS
Access mode: READ
Enum type: N/A
Unit type: N/A
Release: Android 13

WINDOW_LOCK

Window child lock. True indicates the window is child-locked. This property is defined as VehiclePropertyAccess.READ_WRITE, but OEMs can implement it as VehiclePropertyAccess.READ only.

Change mode: ON_CHANGE
Access mode: READ_WRITE/READ
Enum type: N/A
Unit type: N/A
Release: Android 13

WINDOW_MOVE

Window move. The maxInt32Value and minInt32Value in each VehicleAreaConfig must be defined. All integers between minInt32Value and maxInt32Value must be supported. The maxInt32Value indicates the window is opening in plane/closing in the out of plane direction at the fastest speed. The minInt32Value indicates the window is closing in plane/opening in the out of plane direction at the fastest speed.

Larger absolute values, either positive or negative, indicate a faster movement speed. Once the window reaches the positional limit, the value must reset to 0. If the value of WINDOW_MOVE is 0, no movement is underway. This property is represented in a specified range of relative movement speeds.

For a window that may open out of plane (a vent mode of sunroof), this parameter works as follows. If:

• Sunroof is open:
  • Max Open the sunroof further, stop automatically when fully open.
  • Min Close the sunroof, stop automatically when sunroof is closed.
• Vent is open:
  • Max Close the vent, stop automatically stop when vent is closed.
  • Min Open the vent further, stop automatically when vent is fully open.
• Sunroof is closed:
  • Max Open the sunroof, stop automatically when sunroof is fully open.
  • Min Open the vent, stop automatically when vent is fully open.

This property is defined as VehiclePropertyAccess.READ_WRITE, but OEMs can implement it as VehiclePropertyAccess.READ only.

Change mode: ON_CHANGE
Access mode: READ_WRITE/READ
Enum type: N/A
Unit type: N/A
Release: Android 13

WINDOW_POS

Window position. The maxInt32Value and minInt32Value in each VehicleAreaConfig must be defined. All integers between minInt32Value and maxInt32Value must be supported. The minInt32Value indicates the window is closed or fully open out of plane. If the window cannot open out of plane, then minInt32Value is the position of the window when fully closed and must be 0. If the window can open out of plane, the minInt32Value indicates the window is fully open in its position out of plane and is a negative value. See the example below for a more detailed explanation. The maxInt32Value indicates the window is fully open.

Values in between minInt32Value and maxInt32Value indicate a transition state between the closed/fully open out-of-plane and fully open positions. This property is not in any specific unit but in a specified range of relative positions. For example, this is how the property should work for a window that can move out of plane: For a window that may open out of plane (vent mode of sunroof) this parameter works with negative values as follows:

• Max Sunroof fully open (0 for sunroof closed).
• Min Sunroof vent fully open (0 for sunroof closed).

This property is defined as VehiclePropertyAccess.READ_WRITE, but OEMs can implement it as VehiclePropertyAccess.READ only.

Change mode: ON_CHANGE
Access mode: READ_WRITE/READ
Enum type: N/A
Unit type: N/A
Release: Android 13

WINDSHIELD_WIPERS_PERIOD

Windshield wipers period (milliseconds). Returns the instantaneous time period for one full cycle of the windshield wipers in milliseconds. A full cycle is defined as a wiper moving from and returning to the rest position. When an intermittent wiper setting is selected, this property value must be set to 0 during the pause period of the intermittent wiping. The maxInt32Value and minInt32Value in VehicleAreaConfig must be defined. The maxInt32Value for each area ID must specify the longest wiper period. The minInt32Value must be set to 0 for each area ID.

Change mode: ON_CHANGE
Access mode: READ
Enum type: N/A
Unit type: VehicleUnit:MILLI_SECS
Release: Android 14

WINDSHIELD_WIPERS_STATE

Windshield wipers state. Returns the current state of the windshield wipers. The value of WINDSHIELD_WIPERS_STATE may not match the value of WINDSHIELD_WIPERS_SWITCH For example, WINDSHIELD_WIPERS_STATE: ON and WINDSHIELD_WIPERS_SWITCH: WindshieldWipersSwitch#AUTO If WINDSHIELD_WIPERS_STATE: ON and WINDSHIELD_WIPERS_PERIOD is implemented, then WINDSHIELD_WIPERS_PERIOD must reflect the time period of one full cycle of the wipers.

For each supported area ID, the VehicleAreaConfig#supportedEnumValues array must be defined unless all states in WindshieldWipersState are supported (including OTHER, which is not recommended).

Change mode: ON_CHANGE
Access mode: READ
Enum type: WindshieldWipersState
Unit type: N/A
Release: Android 14

WINDSHIELD_WIPERS_SWITCH

Windshield wipers switch. Represents the position of the switch controlling the windshield wipers. The value of WINDSHIELD_WIPERS_SWITCH may not match the value of WINDSHIELD_WIPERS_STATE For example, WINDSHIELD_WIPERS_SWITCH: AUTO and WINDSHIELD_WIPERS_STATE: WindshieldWipersState#ON For each supported area ID, the VehicleAreaConfig#supportedEnumValues array must be defined unless all states in WindshieldWipersSwitch are supported (including OTHER, which is not recommended).

This property is defined as VehiclePropertyAccess.READ_WRITE, but OEMs can implement it as VehiclePropertyAccess.READ only. If this property is implemented as VehiclePropertyAccess.READ_WRITE and the OTHER state is listed in the VehicleAreaConfig#supportedEnumValues array, then OTHER is not a supported value for writing It is only a supported value for reading.

Change mode: ON_CHANGE
Access mode: READ_WRITE/READ
Enum type: WindshieldWipersSwitch
Unit type: N/A
Release: Android 14