MyTeslaMate
EPAS3S family

EPAS3S_a098_rcmCsError

Not Available

What does the EPAS3S_a098_rcmCsError alert mean?

The Electronic Power Assist Steering (EPAS) electronic control unit (ECU) receives invalid controller area network (CAN) messages from the Restraint Control Module (RCM) on the CAN bus.

What you'll see in your Tesla

  • Not Available

What triggers it

The Electronic Power Assist Steering (EPAS) ECU receives invalid CAN messages from the RCM on the CAN bus.

When it clears

The Electronic Power Assist Steering (EPAS) ECU begins receiving valid CAN messages from the RCM on the CAN bus.

Potential impact

Steering assist may be reduced or may not function as expected.

Affected models

Model 3 2017-2023 Model 3 2024+ Model S 2021+ Model X 2021+ 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.