BMS family
BMS_w170_SW_Module_Overvoltage
Unable to charge
What does the BMS_w170_SW_Module_Overvoltage alert mean?
The battery management system (BMS) has detected that a module voltage sensor indicates voltage is too high.
What you'll see in your Tesla
- Unable to charge
- Service is required
What triggers it
A module voltage sensor reports a voltage above the maximum threshold.
When it clears
All module voltage sensors report voltage within the acceptable range.
Potential impact
Inability to charge
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.