BMS_w063 — SW Precharge Failure
Full alert identifier: BMS_w063_SW_Precharge_Failure
Message shown in the car
Unable to start vehicle Service is required
Alert description
The battery management system (BMS) has detected an issue during the precharge process, and the pack contactors were unable to close.
Potential impact
Inability to charge, drive, or support the low voltage (LV) system
Set condition
The BMS detects an issue during the precharge process. Alert log signal data provides information on the specific condition(s) detected.
Clear condition
The BMS has detected that the condition clears.
Signals to check
Open this alert in Service Mode Plus and review the Payload tab. Use the field names below to identify the values shown by your vehicle.
| Signal | Unit |
|---|---|
Coil Current
BMS_
|
A |
Dc Link V
BMS_
|
V |
Neg Ctr Vdrop Diff
BMS_
|
V |
Precharge Current
BMS_
|
A |
Serv Disc V
BMS_
|
V |
| Signal | Unit |
|---|---|
Err Type
BMS_
|
— |
Hvil Ok
BMS_
|
— |
Ssp Alert Active
BMS_
|
— |
Check other alerts
With Service Mode Plus enabled, open Service Alerts → All. Review the other alerts for clues to the cause of BMS_w063.