VCBATT2_a192 — Vehicle Load Shed

Full alert identifier: VCBATT2_a192_vehicleLoadShed

Message shown in the car

Electrical system is unable to support all features Switching off features to conserve energy

Alert description

The Power Conversion System (PCS) is no longer supporting the Low Voltage (LV) battery. Vehicle LV system must reduce electrical load by shutting down select systems / Electronic Control Units (ECUs).

Potential impact

Lead acid: convenience features such as seat heaters, auxiliary ports, and HVAC will no longer be available. Li-ion: all nonessential features / components will no longer be available, with support reserved for critical functions like operating doors, windows, exterior lights, and front trunk / frunk.

Set condition

Lead acid: LV battery voltage below 12.2V while HV support from the PCS is requested. Li-ion: LV battery is not supported by the PCS or the vehicle has experienced a crash event.

Clear condition

Lead acid: LV battery voltage must exceed 12.9V with High Voltage (HV) system active. Li-ion: either the LV battery receives PCS support or, following a crash, the Unified Diagnostic Services (UDS) routine must complete successfully.

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
IBS Current `VCBATT2_a192_IBSCurrent`	A
PCS Current `VCBATT2_a192_PCSCurrent`	A

Signal	Unit
Bms mia `VCBATT2_a192_BMS_MIA`	—
DI Gear `VCBATT2_a192_DI_gear` 0 INVALID 1 P 2 R 3 N 4 D 7 SNA	—
GTW Factory Gated `VCBATT2_a192_GTW_factoryGated`	—
GTW Update Started `VCBATT2_a192_GTW_updateStarted`	—
HV Blocking Mismatch `VCBATT2_a192_HVBlockingMismatch`	—
HV Fault Load Shed Active `VCBATT2_a192_HVFaultLoadShedActive`	—
LV Battery Cannot Support Vehicle `VCBATT2_a192_LVBatteryCannotSupportVehicle`	—
Pcs mia `VCBATT2_a192_PCS_MIA`	—

Show 12 more fields

Signal	Unit
Contactor E Fuse Stable `VCBATT2_a192_contactorEFuseStable`	—
Disconnected 12 V `VCBATT2_a192_disconnected12V`	—
Frunk Open `VCBATT2_a192_frunkOpen`	—
Hv State `VCBATT2_a192_hvState` 0 DOWN 1 COMING UP 2 GOING DOWN 3 UP FOR DRIVE 4 UP FOR CHARGE 5 UP FOR DC CHARGE 6 UP	—
Hvc E Fuse Stable `VCBATT2_a192_hvcEFuseStable`	—
Not Enough Power For Support `VCBATT2_a192_notEnoughPowerForSupport`	—
Pcs E Fuse Stable `VCBATT2_a192_pcsEFuseStable`	—
Post Crash Load Shed Active `VCBATT2_a192_postCrashLoadShedActive`	—
Replace LV Battery `VCBATT2_a192_replaceLVBattery`	—
Service Mode `VCBATT2_a192_serviceMode`	—
Vcright E Fuse Stable `VCBATT2_a192_vcrightEFuseStable`	—
Vehicle Power State `VCBATT2_a192_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 VCBATT2_a192.