2017 Mercedes-Benz GLC 300 Electrical Problems

My vehicle goes into neutral while driving which poses a major risk.

NHTSA ID

11669974

Incident

Jun 28, 2025

The contact owns a 2017 Mercedes-Benz GLC300. The contact stated while driving at an undisclosed speed, the vehicle inadvertently lost motive power. The contact was able to pull over to the shoulder of the roadway, where the vehicle was able to be restarted. No warning lights were illuminated. The vehicle was taken to the dealer, who diagnosed a failure with the battery. The vehicle was repaired, but the failure reoccurred. The vehicle was taken to the dealer, who then diagnosed a failure with the alternator. The vehicle was repaired. The manufacturer was not notified of the failure. The failure mileage was unknown.

NHTSA ID

11595688

Incident

Jun 21, 2024

Error message of collision prevention assist inoperable. Mercedes dealer wants $400 to look at it only.

NHTSA ID

11577867

Incident

Mar 11, 2024

The last time I drove my vehicle was Monday [XXX] which that day it was raining. I covered my car with my car cover that day because I don't use my vehicle often and being that it was raining I covered it and my vehicle was fine on this day. On Monday [XXX] it was raining as well, I took off my car cover off and when we opened the trunk of the vehicle we noticed that the trunk was wet including the bag to my car cover. We also noticed from the trunk opening that the vehicle had some spots of mold and there was also mold spots on the back of the seat right side of vehicle. I had an appointment at Mercedes Benz dealership in Portland Oregon to change my transmission & engine oil. As I drove the vehicle to the dealership for my appointment my daughter and I noticed drops of water falling on us and we didn't have our windows open because it was raining. The water was coming from the sunroof area and the sunroof wasn't open. We kept driving until we got to the dealership and once we got there we noticed that the back seats were also wet and the right side back seat had a few spots of mold on the seatbelt. We left the vehicle at the dealership. Today Wednesday [XXX] the dealership is stating that because the sunroof is used so much the parts in that area due to wear and tear it's no longer working properly. They are charging my daughter 500.00 for a water test that they did to the top of the sunroof and for changing the seals the the sunroof and the back of the trunk they are charging I believe an additional 736.00. I feel that there is something wrong with the sunroof this vehicle. My daughter only drove it for about one year and in May 2018 I became the only driver of this vehicle and to be honest I don't even open the sunroof at all. The dealership is stating that it will cost approximately 15,000.00 to fix this problem and if not considering this vehicle a total loss. We are going to be contacting our insurance and see what happens. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 55

NHTSA ID

11569161

Incident

Nov 30, 2023

After noticing my engine light come on, I had my vehicle checked out, the dealer informed (after spending $250.00) that the problem is the crankcase ventilation and it's a common problem. It seems the oh so familiar crankcase ventilation system is not working. This is a common problem with the GLC300 and Mercedes Benz needs to correct it. The engine is not being ventilated properly and the overwhelming smell of gasoline engulfs the interior of the vehicle. This is putting mine and the life of my family at risk, due to a faulty manufacturer issue. Mecedes Benz needs to obviously correct the faulty parts they use as soon as possible, before someone loses their life.

NHTSA ID

11563324

Incident

Aug 21, 2023

Odometer reading more miles then driven (may have been tampered with altered) There is an electrical issue The computer required to be reprogrammed has not been done yet While driving the vehicle completely stop accelerating in the middle of traffic on the interstate placed my life in danger especially because traffic was moving rapidly the vehicle was jerking horribly also several codes came on when the service light came on also needed a pcp vale hose system they never repaired it i asked to have it repaired they agreed and then stated the vehicle had to many issues was sending to auction but yet reselling the vehicle still have not repaired completely this could be dangerous

NHTSA ID

11520184

Incident

Mar 2, 2023

I pressed the "Park" button, but the transmission did not go into park. When I let my foot off the break, thinking that I was in Park, the car started rolling backwards. Thank God my wife was in the car and noticed the motion and shouted to me to break the car. I was able to stop the car before hitting anybody or anything, but it was dangerously scary.

NHTSA ID

11471238

Incident

Jun 7, 2022

VEHICLE SHUT OFF ON BUSY HIGHWAY. ENGINE SHUT OFF. ELECTRICAL/ COMPUTER SYSTEM MALFUNCITONED. VEHICLE WOULD NOT START BACK UP AGAIN

NHTSA ID

11143674

Incident

Oct 28, 2018

Mileage

11,000 mi

VEHICLE KEY-LESS ENTRY LOCKED OUT THE DRIVER AND PASSENGER WITH KEYS INSIDE THE VEHICLE WHILE PARKED. TALKED TO OTHER MERCEDES GLC300 OWNERS AND THEY ARE EXPERIENCING SAME ISSUE. THIS HAPPENED LATE AT NIGHT WITH MY WIFE AND 7 YEAR OLD DAUGHTER IN A HIGH CRIME AREA WHILE I WAS OUT OF TOWN. MERCEDES ROADSIDE ASSISTANCE CHARGED US $99.95 TO UNLOCK VEHICLE. THIS IS A LIFE THREATENING DEFECT AND SHOULD BE ACKNOWLEDGED AND ADDRESSED BY MERCEDES IMMEDIATELY.

NHTSA ID

11034325

Incident

Oct 14, 2017

Mileage

9,000 mi

TL* THE CONTACT OWNS A 2017 MERCEDES BENZ GLC300. THE CONTACT RECEIVED NOTIFICATION OF NHTSA CAMPAIGN NUMBER: 17V114000 (ELECTRICAL SYSTEM, ENGINE AND ENGINE COOLING) HOWEVER, THE PART NEEDED FOR THE REPAIR WAS NOT AVAILABLE. THE CONTACT STATED THAT THE MANUFACTURER EXCEEDED A REASONABLE AMOUNT OF TIME FOR THE RECALL REPAIR. THE CONTACT CALLED WESTMINSTER MERCEDES BENZ DEALER, LOCATED ON 10391 WESTMINSTER BLVD, WESTMINSTER, CO 80020, WHERE IT WAS INFORMED THAT THE RECALL WAS PENDING AND THE REMEDY PART WAS NOT AVAILABLE FOR THE REPAIR. THE MANUFACTURER WAS NOT MADE AWARE OF THE ISSUE. THE CONTACT HAD NOT EXPERIENCED A FAILURE. VIN TOOL CONFIRMS PART NOT AVAILABLE.

NHTSA ID

11016497

Incident

Mar 8, 2017

TL* THE CONTACT OWNS A 2017 MERCEDES-BENZ GLC300. THE CONTACT RECEIVED NOTIFICATION OF NHTSA CAMPAIGN NUMBER: 17V114000 (ELECTRICAL SYSTEM, ENGINE AND ENGINE COOLING). THE PART TO DO THE REPAIR WAS UNAVAILABLE. THE CONTACT STATED THAT THE MANUFACTURER EXCEEDED A REASONABLE AMOUNT OF TIME FOR THE RECALL REPAIR. ZT MOTORS IN FORT WALTON BEACH, FLORIDA WAS CONTACTED ABOUT THE RECALL TWICE AND STATED THAT THE PARTS WERE UNAVAILABLE. THE MANUFACTURER WAS MADE AWARE OF THE ISSUE. THE CONTACT HAD NOT EXPERIENCED A FAILURE. VIN TOOL CONFIRMS PARTS NOT AVAILABLE.

NHTSA ID

11013908

Incident

Mar 1, 2017

TL* THE CONTACT OWNS A 2017 MERCEDES BENZ GLC300. THE CONTACT RECEIVED NOTIFICATION OF NHTSA CAMPAIGN NUMBER: 17V114000 (ELECTRICAL SYSTEM, ENGINE AND ENGINE COOLING) HOWEVER, THE PART FOR THE RECALL REPAIR WAS UNAVAILABLE. THE CONTACT STATED THE MANUFACTURER EXCEEDED A REASONABLE AMOUNT OF TIME FOR THE RECALL REPAIR. THE CONTACT HAD NOT EXPERIENCED ANY FAILURE. THE CONTACT CONTACTED THE MERECEDEZ BENZ OF FLORENCE DEALER WHO INFORMED THE CONTACT THAT THE PARTS FOR THE REPAIR WERE NOT AVAILABLE. THE MANUFACTURER WAS MADE AWARE OF THE ISSUE AND INFORMED THE CONTACT THAT PARTS WERE NOT AVAILABLE AND THE VEHICLE WAS SAFE TO USE. VIN TOOL CONFIRMS REMEDY NOT YET AVAILABLE.

NHTSA ID

11010178

Incident

Jul 24, 2017

TL* THE CONTACT OWNS A 2017 MERCEDES-BENZ GLC300. THE CONTACT STATED THAT NHTSA CAMPAIGN NUMBER: 17V114000 (ELECTRICAL SYSTEM, ENGINE AND ENGINE COOLING) EXCEEDED A REASONABLE AMOUNT OF TIME FOR REPAIR. THE CONTACT RECEIVED THE RECALL NOTIFICATION IN MARCH OF 2017. THE DEALER AND MANUFACTURER WERE NOT CONTACTED. THE CONTACT HAD NOT EXPERIENCED A FAILURE. VIN TOOL CONFIRMS PARTS NOT AVAILABLE.

NHTSA ID

11005345

Incident

Mar 2, 2017

TL* THE CONTACT OWNS A 2017 MERCEDES-BENZ GLC300. THE CONTACT RECEIVED NOTIFICATION OF NHTSA CAMPAIGN NUMBER: 17V114000 (ELECTRICAL SYSTEM, ENGINE AND ENGINE COOLING). THE MANUFACTURER WAS UNABLE TO PROVIDE A SPECIFIC TIME FRAME FOR THE PARTS TO ARRIVE FOR THE RECALL REPAIR. THE DEALER WAS NOT CONTACTED THE CONTACT HAD NOT EXPERIENCED A FAILURE. VIN TOOL CONFIRMS PARTS NOT AVAILABLE. UPDATED 08/23/17*LJ *CN

NHTSA ID

11000195

Incident

Feb 8, 2017

THE ENGINE SUDDENLY WENT UP IN FLAMES WHILE DRIVING,MY WIFE SWITCHED OFF THE IGNITION AND GO OUT OF THE CAR. THERE WAS A BIG HOLE AND MERCEDES AUTHORIZED DEALER SIAD THIS IS A CATASTROPHIC EVENT. THIS CAR IS NEW PURCHASED ON OCTOBER 31ST 2016 MB SAYS THEY WILL REPLACE THE ENGINE AS IT IS IN WARRANTY, BUT SENTIMENTALLY WE ARE SO UPSET , IF THE FIRE WOULD HAVE CAUGHT ON TO GAS TANK. PLEASE SUGGEST. VEHICLE WAS IN MOTION AND SHE WAS DRIVING AT LESS THAN 30 MILES PER HOUR WHEN SHE NOTICED BURNING SMELL AND IMMEDITELY FUMES WERE COMING FROM THE AC VENTS. PLEASE SUGGEST OUR OPTIONS IN THIS CASE

NHTSA ID

10981207

Incident

Apr 25, 2017

Mileage

3,000 mi