There are 1 owner-reported lighting complaints for the 2012 Mercedes-Benz GL-Classin NHTSA's database. These are unverified consumer reports and may not reflect confirmed defects.
TL* THE CONTACT OWNS A 2012 MERCEDES-BENZ GL550. WHILE DRIVING 15 MPH, THE CONTACT ACTIVATED THE REAR DRIVER SIDE TURN SIGNAL, BUT THE SIGNAL FAILED TO ILLUMINATE. THE VEHICLE WAS TAKEN TO A DEALER WHERE IT WAS DIAGNOSED THAT THE "LIGHT MODULE" FAILED AND NEEDED TO BE REPLACED. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS NOT MADE AWARE OF THE ISSUE THE APPROXIMATE FAILURE MILEAGE WAS 61,000. UPDATED 06/01/17*LJ *AS
Complaints are unverified consumer reports submitted to NHTSA. A high complaint count may reflect vehicle popularity, not defect severity. Data sourced from NHTSA public records.
Data synced from NHTSA on Apr 26, 2026