MyTeslaMate
APP family

APP_w153_rcmMiaPartyBus

Not Available

What does the APP_w153_rcmMiaPartyBus alert mean?

One or more of the messages the Autopilot electronic control unit (ECU) receives periodically from the restraint control module (RCM) ECU is not received on the Party bus, indicating the RCM ECU may be unavailable (MIA).

What you'll see in your Tesla

  • Not Available

What triggers it

One or more of the expected messages from the RCM ECU is not received on the Party bus.

When it clears

The Autopilot ECU starts receiving expected messages from the RCM ECU on the Party bus.

Potential impact

Autopilot features may be unavailable, or may not function as expected.

Affected models

Cybertruck Model 3 2017-2023 Model 3 2024+ Model S 2021+ Model X 2021+ Model Y Model Y 2025+ Semitruck

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.