VCLEFT_a199 — Discnctd LV Battery

Full alert identifier: VCLEFT_a199_discnctdLVBattery

Alert description

The low voltage (LV) battery is disconnected.

Potential impact

Loss of support from the low voltage (LV) battery, so the vehicle electrical system is only supported via the power conversion system (PCS). Lead acid only: Some vehicle features may be unavailable due to load shedding. There should be another alert present to indicate this.

Set condition

No current flow detected to / from the low voltage (LV) battery for an extended time period.

Clear condition

Current flow detected to / from the low voltage (LV) battery.

Signals to check

These diagnostic fields are associated with VCLEFT_a199. Check the alert's Alert Log in Service Mode Plus for available values.

Signal	Unit
ECPA State `VCLEFT_a199_ECPAState` 0 OPEN 1 CLOSED 2 INVALID 3 SNA	—
Battery SM State `VCLEFT_a199_batterySMState` 0 INIT 1 CHARGE 2 DISCHARGE 3 STANDBY 8 FAULT	—
Disconnected Battery Test Current `VCLEFT_a199_disconnectedBatteryTestCurrent`	A
Disconnected Battery Test Prev Voltage `VCLEFT_a199_disconnectedBatteryTestPrevVoltage`	V
Disconnected Battery Test Voltage `VCLEFT_a199_disconnectedBatteryTestVoltage`	V
Factory Mode `VCLEFT_a199_factoryMode`	—
Frunk Open `VCLEFT_a199_frunkOpen`	—
Service Mode `VCLEFT_a199_serviceMode`	—

Show 2 more fields

Signal	Unit
Transport Mode `VCLEFT_a199_transportMode`	—
Vehicle Power State `VCLEFT_a199_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 VCLEFT_a199.