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.

Check other alerts

With Service Mode Plus enabled, open Service Alerts → All. Review the other alerts for clues to the cause of APP_w321.

APP_w036 — Bdy Mia APP_w036_bdyMia
APP_w064 — Epas Mia APP_w064_epasMia One or more of the messages the Autopilot electronic control unit (ECU) receives periodically from the electronic power assisted steering (EPAS) ECU is not received, indicating the EPAS ECU may be unavailable (MIA).
APP_w033 — Gtw Mia APP_w033_gtwMia One or more of the messages that the the Autopilot electronic control unit (ECU) receives periodically from the vehicle gateway (GTW) ECU is not received over the controller area network (CAN). Autopilot features will be unavailable, or ma…
APP_w035 — Esp Mia APP_w035_espMia One or more of the messages the Autopilot electronic control unit (ECU) receives periodically from the Electronic Stability Program (ESP) ECU is not received, indicating the ESP ECU may be unavailable (MIA).
APP_w045 — Rad Mia APP_w045_radMia One or more of the messages the Autopilot electronic control unit (ECU) receives periodically from the radar ECU is not received, indicating the radar ECU may be unavailable (MIA).

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