RSA family
RSA_a212_activeFault
Rear axle steering disabled - Turning radius limited
What does the RSA_a212_activeFault alert mean?
Rear Steer Actuator (RSA) is stopped at current position
What you'll see in your Tesla
- Rear axle steering disabled - Turning radius limited
- Exiting and re-entering vehicle may restore feature
What triggers it
Rear steer actuator detects an internal condition affecting functionality and defaults to a safe state
When it clears
A vehicle accessory cycle is performed
Potential impact
No rear axle steering for the current drive cycle
Affected models
Cybertruck
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.