BMS family
BMS_w108_HW_BMB_Alarm_Self_Test
Vehicle shutting down
What does the BMS_w108_HW_BMB_Alarm_Self_Test alert mean?
The battery management system (BMS) has detected a battery monitoring board (BMB) fails the wake up alarm self test.
What you'll see in your Tesla
- Vehicle shutting down
- PULL OVER SAFELY
What triggers it
The BMS detects an issue with the BMB wake up alarm self-test.
When it clears
The BMS detects that the issue 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.