VCFRONT_a510_LVBatteryRecoveryTimeout
Description
A low voltage (LV) battery recovery attempt has timed out and has been aborted, and the internal protection transistor (MOSFET) has been opened. May occur because an external power supply is connected to the LV battery, or due to a high impedance connection between the power conversion system (PCS) and LV battery. The low voltage battery management system (LVBMS) reports a FAULT state.
Condition
The LVBMS reports an LV battery recovery attempt has timed out and has been aborted because 50 seconds have passed without the LVBMS detecting adequate current flow to the LV battery across the internal protection transistor (MOSFET).
Clear Condition
Will clear on next LV battery recovery attempt. To trigger another recovery attempt: disconnect then reconnect the LV battery, run the LV battery recovery ODIN routine, or cycle vehicle LV power. Be sure to remove / disconnect any external power supply before attempting to recover the LV battery.
Potential Impact
The high voltage (HV) system will remain energized to continue supplying electrical power to the vehicle while the LV battery is unavailable. This may result in greater range loss than expected, increased HV system energy consumption when the vehicle is idle, and prevent the vehicle from sleeping. The vehicle will be unable to drive while this alert persists.
Customer Facing Message 1
LV Battery recovery attempt timed out
Customer Facing Message 2
Remove external power supplies and reconnect battery
Audiences
service-fix
Models
Model 3 2017-2023;Model 3 2024+;Model Y;Model Y 2025+