BMS family
BMS_f031_SW_Precharge_Res_Hot
Unable to start vehicle
What does the BMS_f031_SW_Precharge_Res_Hot alert mean?
The battery management system (BMS) has detected that the HV battery precharge resistor is above the maximum operating temperature.
What you'll see in your Tesla
- Unable to start vehicle
- Service is required
What triggers it
The BMS detects that pack contactors have opened and closed too many times in a short period of time.
When it clears
The BMS detects that enough time has passed before pack contactors are closed again.
Potential impact
Inability to charge, drive, or support the low voltage (LV) system
Affected models
Model S 2012-2020
Model X 2015-2020
Track your Tesla's alerts automatically
Alerts like this reach MyTeslaMate through your car's Tesla telemetry API. MyTeslaMate logs every alert your Tesla reports and turns it into readable history and real-time notifications — hosted TeslaMate with no server to run.