MyTeslaMate
EPASTS family

EPASTS_a031_pmsProductionModeFailed

Not Available

What does the EPASTS_a031_pmsProductionModeFailed alert mean?

This alert is reported by the ProductionModeSupervisor_R12 (PMS) component when production mode was requested by either the EOL__PLATFORM__PRODUCTION_MODE parameter or not-initialized RAM and the handshake with Core1 was unsuccessful.

What you'll see in your Tesla

  • Not Available

What triggers it

EPAS production mode requested and the handshake mechanism with Core1 failed.

When it clears

Handshake mechanism is performed successfully or EPAS power cycle.

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.