APP family
APP_w171_appHighCoolantFlowReq
Not Available
What does the APP_w171_appHighCoolantFlowReq alert mean?
The Autopilot electronic control unit (ECU) reports a high temperature and requests immediate cooling.
What you'll see in your Tesla
- Not Available
What triggers it
The Autopilot ECU temperature exceeds the threshold for the normal operating range.
When it clears
The Autopilot ECU temperature is within normal operating range.
Potential impact
The Autopilot ECU may shut down, and Autopilot features may become 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.