BMS family
BMS_f036_SW_HVIL
Vehicle may not restart
What does the BMS_f036_SW_HVIL alert mean?
The battery management system (BMS) detects an issue with the high voltage interlock loop (HVIL). The voltage at the HVIL output pin of the BMS is too low (in respect to the number of HVIL nodes the vehicle has) or too close to the HVIL open voltage.
What you'll see in your Tesla
- Vehicle may not restart
- Service is required
What triggers it
HVIL output voltage sensed by the BMS is outside of the expected bounds.
When it clears
The BMS detects that the condition clears.
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.