APS family
APS_w249_ufsFailures
Not Available
What does the APS_w249_ufsFailures alert mean?
The Autopilot Electronic Control Unit (ECU) detects an unexpected condition affecting the Universal Flash Storage (UFS).
What you'll see in your Tesla
- Not Available
What triggers it
The Autopilot UFS device experienced an unexpected condition affecting its operation. Alert log signal data will provide further information on the specific condition(s).
When it clears
Clears automatically.
Potential impact
Autopilot functionality is limited or unavailable. The rear-view (backup) camera feed is unavailable on the Media Control Unit (MCU).
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.