APP_w321 — Bms Mia
Full alert identifier: APP_w321_bmsMia
Alert description
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).
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.
Set condition
One or more of the expected messages from the BMS ECU is not received.
Clear condition
The Autopilot ECU starts receiving expected messages from the BMS ECU.
Signals to check
These diagnostic fields are associated with APP_w321. Check the alert's Payload in Service Mode Plus for available values.
| Signal | Unit |
|---|---|
Autonomy Health
APP_
|
— |
Energy Status
APP_
|
— |
Status
APP_
|
— |
Check other alerts
With Service Mode Plus enabled, open Service Alerts → All. Review the other alerts for clues to the cause of APP_w321.