BMS family
BMS_f161_SW_Contactor_Stress
Not Available
What does the BMS_f161_SW_Contactor_Stress alert mean?
The battery management system (BMS) has detected that pack contactor degradation has exceeded the maximum threshold.
What you'll see in your Tesla
- Not Available
What triggers it
The BMS detects that the pack contactor stress estimate is above the warning limit threshold.
When it clears
The BMS detects that the pack contactor stress estimate is below the warning limit threshold.
Potential impact
This alert is primarily informational and serves as an early warning of pack contactor degradation.
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.