BMS family
BMS_w050_SW_BMB_MIA
Vehicle may not restart
What does the BMS_w050_SW_BMB_MIA alert mean?
The battery management system (BMS) is not receiving communication from a battery monitoring board (BMB), indicating that the BMB may be unavailable (MIA).
What you'll see in your Tesla
- Vehicle may not restart
- Service is required
What triggers it
The BMS does not receive one or more of the expected voltage or temperature sensor readings from a BMB.
When it clears
The BMS receives the expected messages from all BMBs.
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.