BMS family
BMS_f008_HW_HVIL
Vehicle may not restart
What does the BMS_f008_HW_HVIL alert mean?
There is a hardware problem with the high voltage interlock loop (HVIL).
What you'll see in your Tesla
- Vehicle may not restart
- Service is required
What triggers it
The complex programmable logic device (CPLD) has detected that the HVIL is open and the vehicle is not in Drive.
When it clears
The CPLD 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.