STO_a138_lkasControlSteerAgRange
Not Available
What does the STO_a138_lkasControlSteerAgRange alert mean?
CAN messages from the Lane Keep Assist System (LKAS) ECU have an invalid steering angle demand range, indicating an error in data integrity has been detected.
What you'll see in your Tesla
- Not Available
What triggers it
CAN message frames from the LKAS ECU have an out of range steering angle demand value
When it clears
CAN messages received as expected
Potential impact
Active Driver Assist System (ADAS) control is disabled, and Steering assist may be affected, since the Lane Keep Assist System (LKAS) to Steering Torque Overlay (STO) interface is interrupted
Affected models
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.