EPASTS family
EPASTS_a178_exchWdtException
Not Available
What does the EPASTS_a178_exchWdtException alert mean?
This alert is reported by the ExceptionHandler_TC3x (EXCH) component when there is a watchdog timeout exception.
What you'll see in your Tesla
- Not Available
What triggers it
EPAS application component ExceptionHandler detected exception (watchdog).
When it clears
Perform EPAS Software update. Replace HW if the alert persists.
Potential impact
EPAS reset.
Affected models
Model Y
Model Y 2025+
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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.