BMS family
BMS_w034_SW_Isolation_Sensor
Vehicle shutting down
What does the BMS_w034_SW_Isolation_Sensor alert mean?
The battery management system (BMS) detects that there is an isolation sensor error.
What you'll see in your Tesla
- Vehicle shutting down
- PULL OVER SAFELY
What triggers it
The BMS runs into an abnormality during the isolation circuit test.
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.