Power & shutdown

AP_POWER_BOOTUP_REASON

What it is

Property to report bootup reason for the current power on. This is a static property that will not change for the whole duration until power off. For example, even if user presses power on button after automatic power on with door unlock, bootup reason must stay with VehicleApPowerBootupReason#USER_UNLOCK.

int32Values[0] must be VehicleApPowerBootupReason.

How the ID is built

A property ID is a 32-bit value packing four fields. Reading 0x11400a02 apart:

Field	Mask	Value	Means
Group	0xf0000000	0x10000000	SYSTEM
Area	0x0f000000	0x01000000	GLOBAL
Type	0x00ff0000	0x00400000	INT32
Ordinal	0x0000ffff	0x00000a02	0xa02

Reading it from an app

CarPropertyManager mgr = (CarPropertyManager)
        car.getCarManager(Car.PROPERTY_SERVICE);

int value =
        mgr.getIntProperty(VehiclePropertyIds.AP_POWER_BOOTUP_REASON, 0);

This property is read-only — writes are rejected. It is static for the life of the vehicle, so read it once and cache it.