APP_w157_sccmMiaVehBus
Not Available
What does the APP_w157_sccmMiaVehBus alert mean?
One or more of the messages the Autopilot electronic control unit (ECU) receives periodically from the steering column control module (SCCM) ECU is not received on the Vehicle (VEH) bus, indicating the SCCM 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 SCCM ECU is not received on the Vehicle (VEH) bus.
When it clears
The Autopilot ECU starts receiving expected messages from the SCCM ECU on the Vehicle (VEH) bus.
Potential impact
Autopilot features may be unavailable, or may not function as expected.
Affected models
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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.