VCFRONT1_a191 — Exit Drive Domain Down

Full alert identifier: VCFRONT1_a191_exitDriveDomainDown

Message shown in the car

Electrical system power reduced Vehicle shutting down

Alert description

A condition with the Low Voltage (LV) system requires the vehicle to come to a stop immediately. The vehicle is entering a graceful power-off (GPO) to exit drive. One or more alerts will be present to indicate that condition.

Potential impact

The vehicle will not enter drive. If the vehicle is driving, it will exit drive through graceful power-off (GPO) to come to a stop immediately. A separate alert should be present to indicate the GPO

Set condition

The Low Voltage (LV) bridge is open (no current flow), and the Vehicle Battery Controller (VCBATT) is unavailable (or MIA).

Clear condition

The Low Voltage (LV) bridge is closed, or the Vehicle Battery Controller (VCBATT) is no longer unavailable (or MIA).

Signals to check

Open this alert in Service Mode Plus and review the Payload tab. Use the field names below to identify the values shown by your vehicle.

Signal	Unit
Bus Voltage `VCFRONT1_a191_busVoltage`	V

Signal	Unit
Not Enough Power For Support `VCFRONT1_a191_NotEnoughPowerForSupport`	—
Bms State `VCFRONT1_a191_bmsState`	—
Exit Drive Warning Timer Expired `VCFRONT1_a191_exitDriveWarningTimerExpired`	—
Frunk Open `VCFRONT1_a191_frunkOpen`	—
Hv State `VCFRONT1_a191_hvState` 0 DOWN 1 COMING UP 2 GOING DOWN 3 UP FOR DRIVE 4 UP FOR CHARGE 5 UP FOR DC CHARGE 6 UP	—
Service Mode `VCFRONT1_a191_serviceMode`	—
Vehicle Power State `VCFRONT1_a191_vehiclePowerState` 0 OFF 1 CONDITIONING 2 ACCESSORY 3 DRIVE	—

Check other alerts

With Service Mode Plus enabled, open Service Alerts → All. Review the other alerts for clues to the cause of VCFRONT1_a191.