VCLEFT_a497_LVBatteryWarnDisconnect

The low voltage (LV) battery internal protection transistor (MOSFET) is open, while the LV battery is at low state of charge and recovering the MOSFET is not being attempted. As a result, the low voltage battery management system (LVBMS) continues to draw power from the cells, which may make the LV battery unrecoverable if it is not disconnected soon.

Live incidence rate

<0.01% (Extremely rare)

Vehicle messages

Disconnect low voltage battery to prevent overdischarge
Low voltage battery may become unusable

Impact

The LV battery may become too deeply discharged and unrecoverable.

Description

The low voltage (LV) battery internal protection transistor (MOSFET) is open, while the LV battery is at low state of charge and recovering the MOSFET is not being attempted. As a result, the low voltage battery management system (LVBMS) continues to draw power from the cells, which may make the LV battery unrecoverable if it is not disconnected soon.

Cause

The LV battery state of charge (SOC) is less than 30%, the LV battery internal protection transistor (MOSFET) is open, and there are no low voltage battery management system (LVBMS) communication or firmware mismatch issues.

Clear condition

The LV battery internal protection transistor (MOSFET) is closed and the LV battery is electrically connected to the vehicle and charging, or the LV battery is disconnected from the wiring harness to prevent further discharge.

Models

Cybertruck

Visibility

service-fix

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