VCLEFT_a496 — LV Battery Exit Drive Warning
Full alert identifier: VCLEFT_a496_LVBatteryExitDriveWarning
Alert description
The low voltage (LV) battery is in a critical state and the vehicle controller is about to trigger a graceful exit from drive (also known as a graceful power-off, or GPO). At least one other alert should be present when the vehicle starts to exit drive / graceful power-off occurs.
Potential impact
The vehicle will exit drive within the next few minutes, with a separate alert present to indicate that condition, and the next drive cycle will be blocked.
Set condition
May set due to a condition or combination of conditions indicating the LV battery cannot support the vehicle, including: the LV battery internal protection transistor (MOSFET) is open, the reverse battery eFuse has tripped (is open), or the vehicle controller is actively shedding vehicle electrical loads to conserve energy for essential functions. Alert log signal data should provide more information.
Clear condition
No condition or combination of conditions is detected indicating the LV battery cannot support the vehicle, or the vehicle has already entered graceful power-off (GPO) and is actively exiting drive.
Signals to check
These diagnostic fields are associated with VCLEFT_a496. Check the alert's Alert Log in Service Mode Plus for available values.
| Signal | Unit |
|---|---|
MOS State
VCLEFT_
|
— |
Not Enough Power For Support
VCLEFT_
|
— |
Pcs mia
VCLEFT_
|
— |
Bms State
VCLEFT_
|
— |
Frunk Open
VCLEFT_
|
— |
Reverse Battery E Fuse Fault
VCLEFT_
|
— |
Service Mode
VCLEFT_
|
— |
Vehicle Load Shed Active
VCLEFT_
|
— |
Check other alerts
With Service Mode Plus enabled, open Service Alerts → All. Review the other alerts for clues to the cause of VCLEFT_a496.