EPASTS family
EPASTS_a120_mcusscFlashEccLatentErr
Not Available
What does the EPASTS_a120_mcusscFlashEccLatentErr alert mean?
This alert is reported by MCUSafetyStartupChecks_TC3x (MCUSSC) component when the flashed SW is incorrect or flash memory failure.
What you'll see in your Tesla
- Not Available
What triggers it
EPAS has detected flashed SW data integrity failure (ECC) but the number of faults didn't reached the tolerated limits.
When it clears
Perform EPAS Software update.
Potential impact
EPAS reset. If reset more than 6 then EPAS fallback to bootloader.
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.