Model Y

EPASTS_a014 — Mcussc Sff Monitoring Mia

Full alert identifier: EPASTS_a014_mcusscSffMonitoringMia

Alert description

This alert is reported by the MCUSafetyStartupChecks_TC3x (MCUSSC) component when there is a MCU internal failure (The Safety FlipFlop Monitoring tests not finished in time).

Potential impact

EPAS full loss of assist.

Set condition

EPAS Safety FlipFlop Monitoring timeout at startup.

Clear condition

Perform EPAS ECU power cycle.

Signals to check

These diagnostic fields are associated with EPASTS_a014. Check the alert's Payload in Service Mode Plus for available values.

Signal	Unit
Debug Info `EPASTS_a014_debugInfo`	—

Check other alerts

With Service Mode Plus enabled, open Service Alerts → All. Review the other alerts for clues to the cause of EPASTS_a014.

EPASTS_a013 — Mcussc Sff Monitoring Failed EPASTS_a013_mcusscSffMonitoringFailed This alert is reported by the MCUSafetyStartupChecks_TC3x (MCUSSC) component when there is a MCU internal failure (The Safety FlipFlop Monitoring tests failed for at least one of the MTU or SMU instances).
EPASTS_a126 — Mcussc Monbist Mia Err EPASTS_a126_mcusscMonbistMiaErr This alert is reported by MCUSafetyStartupChecks_TC3x (MCUSSC) component when the Secondary Monitor and Standby SMU Built in Self Test failure, MCU failure
EPASTS_a125 — Mcussc Mbist Mia Err EPASTS_a125_mcusscMbistMiaErr This alert is reported by MCUSafetyStartupChecks_TC3x (MCUSSC) component when the memory Built-In-SelfTest failed, MCU failure
EPASTS_a248 — Sccm Mia EPASTS_a248_sccmMia SCCM_steeringAngleSensor message not received
EPASTS_a245 — Rcm Mia EPASTS_a245_rcmMia The Electric Power Assist Steering (EPAS) electronic control unit (ECU) is not receiving the expected controller area network (CAN) messages from the Restraint Control Module (RCM) on the CAN bus.

Browse all EPASTS alert codes