DI family
DI_a166_driverLeft
Vehicle automatically parked to prevent rollaway
What does the DI_a166_driverLeft alert mean?
The drive interface (DI) electronic control unit (ECU) detects that the driver may no longer be in the driver's seat while the vehicle is not in Park.
What you'll see in your Tesla
- Vehicle automatically parked to prevent rollaway
- Fasten seatbelt and close door to stay in gear
What triggers it
The vehicle is not in Park and the front vehicle controller detects conditions indicating that the driver is leaving.
When it clears
The front vehicle controller reports that the driver's seat is occupied.
Potential impact
The vehicle shifts into Park
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.