BCS2L family
BCS2L_w109_3RHeatrTmpSnsInvalid
Not Available
What does the BCS2L_w109_3RHeatrTmpSnsInvalid alert mean?
Check seat temperature sensor for fault
What you'll see in your Tesla
- Not Available
What triggers it
The heat pad is present, the temperature sensor is not disconnected and the value is less than -38 degC with a valid ambient reading of more than 10 degC, all for more than 3 seconds
When it clears
The heat pad is not present or the temperature sensor is disconnected or the value is greater than -37 degC with ambient invalid or a valid ambient is less than 8 degC
Potential impact
The 2nd row seat heater may be disabled
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.