BMS_w158 — SW Low Isolation Wrn
Full alert identifier: BMS_w158_SW_Low_Isolation_Wrn
Alert description
The battery management system (BMS) detects low high voltage (HV) isolation when pack contactors were closed.
Potential impact
This alert is primarily informational and is used for logging purposes. It is intended to flag low isolation issues before they are serious enough to prevent driving.
Set condition
The BMS has detected that the HV isolation dropped below the minimum warning threshold multiple times in a short period.
Clear condition
The BMS detects that HV isolation is above the minimum warning threshold.
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 |
|---|---|
Iso Resistance
BMS_
|
kOhm |
Max Brick T
BMS_
|
C |
Min Brick T
BMS_
|
C |
| Signal | Unit |
|---|---|
Contactor State
BMS_
|
— |
Contactor State FC
BMS_
|
— |
Counter Val
BMS_
|
— |
Drive Rail On
BMS_
|
— |
State
BMS_
|
— |
Check other alerts
With Service Mode Plus enabled, open Service Alerts → All. Review the other alerts for clues to the cause of BMS_w158.