VCFRONT_a271_LVBatteryPermSupported

After a Low Voltage (LV) Battery condition was identified that may prevent precharging the High Voltage (HV) Bus, the HV Bus successfully energized and will support the LV System to enable drive. The vehicle controller requests to keep the HV bus energized until the LV battery is replaced.

Live incidence rate

<0.01% (Extremely rare)

Vehicle messages

None displayed

Impact

The HV System will remain on to support vehicle functions, including drive, and the HV contactors will remain closed.

Description

After a Low Voltage (LV) Battery condition was identified that may prevent precharging the High Voltage (HV) Bus, the HV Bus successfully energized and will support the LV System to enable drive. The vehicle controller requests to keep the HV bus energized until the LV battery is replaced.

Cause

The failureToPrechargeRisk alert is set, and the HV Bus is energized.

Clear condition

The LV Battery is replaced.

Models

Model 3 2017-2023, Model 3 2024+, Model Y, Model Y 2025+

Visibility

service

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