EPASTS family
EPASTS_a157_mcudcpInvalidEcuId
Not Available
What does the EPASTS_a157_mcudcpInvalidEcuId alert mean?
This alert is reported by the reported by the MCUDynamicConfigurationProvider_TC3x component when reading EndOfLine ECU parameters fails.
What you'll see in your Tesla
- Not Available
What triggers it
EPAS End Of Line ECU parameters failure (unkown or corrupted).
When it clears
Perform EPAS Software update. Reflash EOL parametrization.
Potential impact
EPAS full loss of assist.
Affected models
Model Y
Model Y 2025+
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.