APS family
APS_w254_sleepStateTimeout
Not Available
What does the APS_w254_sleepStateTimeout alert mean?
The Autopilot electronic control unit (ECU) encountered an unusual timeout in sleep state transition.
What you'll see in your Tesla
- Not Available
What triggers it
Timed out in sleep state control.
When it clears
Clears automatically.
Potential impact
Autopilot may unexpectedly stay on or off.
Affected models
Cybertruck
Model 3 2017-2023
Model 3 2024+
Model S 2021+
Model X 2021+
Model Y
Model Y 2025+
Semitruck
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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.