TAS family
TAS_a039_PWMopenFR
Not Available
What does the TAS_a039_PWMopenFR alert mean?
Front right height sensor disconnected, or signal line from front right Pulse Width Modulation (PWM) height sensor floating.
What you'll see in your Tesla
- Not Available
What triggers it
Front right height sensor disconnected, or signal line from front right PWM height sensor floating.
When it clears
Expected PWM signal received from front right ride height sensor.
Potential impact
Air suspension leveling will be disabled. Systems with adaptive dampers will disable active damping control.
Affected models
Cybertruck
Model 3 2024+
Model S 2012-2020
Model S 2021+
Model X 2015-2020
Model X 2021+
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.