APP_w321_bmsMia
Not Available
What does the APP_w321_bmsMia alert mean?
One or more of the messages the Autopilot electronic control unit (ECU) receives periodically from the high voltage battery management system (BMS) ECU is not received, indicating the BMS 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 BMS ECU is not received.
When it clears
The Autopilot ECU starts receiving expected messages from the BMS ECU.
Potential impact
The Autopilot ECU may keep the chassis (CH) bus awake longer than expected to upload telemetry. Autopilot features may be unavailable, or may not function as expected.
Affected models
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