VCLEFT_a404_resistanceEstimationHardFailure

The low voltage (LV) battery internal resistance is too high, based on measured voltage being below the acceptable threshold during a resistance estimation test. Indicates LV battery replacement is necessary.

Live incidence rate

<0.01% (Extremely rare)

Vehicle messages

None displayed

Impact

The LV battery may be unable to support precharge loads / precharge the high voltage (HV) bus, and requires replacement.

Description

The low voltage (LV) battery internal resistance is too high, based on measured voltage being below the acceptable threshold during a resistance estimation test. Indicates LV battery replacement is necessary.

Cause

The LV battery voltage dropped below the lower limit during a resistance estimation test.

Clear condition

The vehicle controller loses all electrical power from the LV battery and power conversion system (PCS), as would happen during LV battery replacement.

Models

Cybertruck

Visibility

service

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