UI family
UI_a027_AutoSteerMIA
Not Available
What does the UI_a027_AutoSteerMIA alert mean?
Missing CAN message from Driver Assistance ECU (DAS) or Cruise or Autopilot state went to FAULT.
What you'll see in your Tesla
- Not Available
What triggers it
CAN message 'ETH_DAS_STATUS_MID' from DAS not received by the UI whilst drive rail ON, or Cruise state went to FAULT when Autopilot was active, or Autopilot state changed from ACTIVE to FAULT
When it clears
Cruise & Autopilot resume standard operation
Potential impact
Cruise or Autopilot unavailable
Affected models
Cybertruck
Model 3 2017-2023
Model 3 2024+
Model S 2021+
Model X 2021+
Model Y
Model Y 2025+
Semitruck
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.