VCFRONT_a173 — HV Blckd By Msmtch
Full alert identifier: VCFRONT_a173_HVBlckdByMsmtch
Message shown in the car
Incompatible electrical system software detected Schedule service - Unable to charge until updated
Alert description
The vehicle has detected at least one electronic control unit (ECU) required for high voltage (HV) system operation running a firmware (software) version that may not be compatible with the firmware installed on the rest of the vehicle. When this occurs, the vehicle controller blocks HV battery contactors from closing and HV system from becoming active to make sure no ECU required for HV system operation is limited or unavailable due to firmware. May occur after an unsuccessful or incomplete firmware update, and may be resolved through a successful firmware update.
Potential impact
Vehicle is unable to drive, charge, or support the low voltage electrical system until the firmware version mismatch is resolved, to make sure no vehicle functionality required for HV system operation is limited or unavailable due to firmware.
Set condition
The vehicle detects at least one ECU required for HV system operation running a different firmware version than expected.
Clear condition
The vehicle no longer detects any ECU required for HV system operation running a different firmware version than expected.
Signals to check
These diagnostic fields are associated with VCFRONT_a173. Check the alert's Payload in Service Mode Plus for available values.
| Signal | Unit |
|---|---|
ECU Mismatch Bits
VCFRONT_
|
— |
Service Mode
VCFRONT_
|
— |
Check other alerts
With Service Mode Plus enabled, open Service Alerts → All. Review the other alerts for clues to the cause of VCFRONT_a173.