BMS_f027 — SW Drive Iso Repeated
Full alert identifier: BMS_f027_SW_Drive_Iso_Repeated
Message shown in the car
Unable to start vehicle Service is required
Alert description
The battery management system (BMS) detects that there was a repeated loss of isolation during drive.
Potential impact
The vehicle will not start.
Set condition
The BMS detects that isolation dropped multiple times below the minimum threshold while driving.
Clear condition
The BMS isolation counter undergoes a manual reset.
Signals to check
These diagnostic fields are associated with BMS_f027. Check the alert's Payload in Service Mode Plus for available values.
| Signal | Unit |
|---|---|
Sw Iso Degradatio Count
BMS_
|
— |
Sw Isolation Count
BMS_
|
— |
Sw Isolation Std Dev Count
BMS_
|
— |
Check other alerts
With Service Mode Plus enabled, open Service Alerts → All. Review the other alerts for clues to the cause of BMS_f027.