THC family
THC_w0100_batHeatPerfReduced
Battery heating unavailable - Charge rate reduced
What does the THC_w0100_batHeatPerfReduced alert mean?
The thermal controller (THC) detects reduced performance in the battery heater.
What you'll see in your Tesla
- Battery heating unavailable - Charge rate reduced
- Charging may be unavailable in cold temperatures
What triggers it
Reduced battery heater performance detected.
When it clears
Battery heater performance is restored.
Potential impact
Battery heater may not operate as expected.
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.