BMS_w149 — SW precharge too short
Full alert identifier: BMS_w149_SW_precharge_too_short
Message shown in the car
Unable to start vehicle Service is required
Alert description
The battery management system (BMS) has detected that the length of time it took the vehicle to precharge was too short.
Potential impact
Inability to charge, drive, or support the low voltage (LV) system
Set condition
The BMS detected that the voltage on the DC link bus rose faster than expected.
Clear condition
The BMS detects 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 |
Hvil V
BMS_
|
V |
Precharge Current
BMS_
|
A |
| Signal | Unit |
|---|---|
Ctr Set Failed
BMS_
|
— |
Err Type
BMS_
|
— |
Check other alerts
With Service Mode Plus enabled, open Service Alerts → All. Review the other alerts for clues to the cause of BMS_w149.