NHTSA Complaint #11710906 — 2017 MERCEDES-BENZ GLS450

The contact owns a 2017 Mercedes-Benz GLS450. The contact heard an abnormal humming sound when the vehicle was started, and the humming sound grew louder over time. The contact believed that the humming sound was coming from the driver's side headlamp. The contact stated that the headlamp was equipped with a small internal fan to dissipate heat. Additionally, other electrical failures were occurring, and the vehicle was taken to a local dealer. The dealer diagnosed the vehicle and determined that the blower motor had failed and needed to be replaced. The vehicle was repaired; however, the humming sound returned. The vehicle was taken to the dealer on two more occasions, and the dealer replaced the timing belt and the alternator, however the failure reoccurred. Recently, while touching the door handle, the contact heard a humming sound that was very loud. The vehicle was taken back to the dealer, and it was determined that the driver's side headlamp assembly needed to be replaced. The vehicle was not repaired. The contact researched online and related the failure to NHTSA Campaign Number: 20V626000 (Electrical System, Steering, Exterior Lighting, Visibility); however, the VIN was not included. The manufacturer was contacted and confirmed that the VIN was not included in the recall. The failure mileage was 135,500.