VCLEFT family
VCLEFT_a418_fohmTouchVarianceFail
Not Available
What does the VCLEFT_a418_fohmTouchVarianceFail alert mean?
This ensures all the FOHM touch detection doesn't exceed the noise threshold
What you'll see in your Tesla
- Not Available
What triggers it
FOHM detected an capacitive variance supervision failure
When it clears
Recoverable if noise conditions are removed, otherwise, power cycle or hardware replacement if issue persist
Potential impact
Loss of touch functionality due to functional safety checks
Affected models
Model 3 2024+
Model Y 2025+
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.