VCFRONT_a549 — Left Headlamp Internal Error V3
Full alert identifier: VCFRONT_a549_leftHeadlampInternalErrorV3
Alert description
The Left Headlight Control Module (HCML) detects an internal condition affecting the functionality of the left headlight, which is reported to the front vehicle controller (VCFRONT).
Potential impact
Some headlight functions may be unavailable or may not function as expected. Headlight functionality may return after vehicle sleep.
Set condition
The pixel matrix manager detects non-functional pixels or has communication issues, or the voltage measured across the boost rail, Lowbeam, DRL, Side Marker, or Turn LEDs is out of range, or the LED drivers in the ECU have reported status flags, or certain values programmed in the matrix manager EEPROM are out of range.
Clear condition
Clears when the HCML is power cycled, which occurs during vehicle sleep.
Check other alerts
With Service Mode Plus enabled, open Service Alerts → All. Review the other alerts for clues to the cause of VCFRONT_a549.