Mercedes-Benz GLC-Class Complaints

782 consumer complaints on file.

#11568921January 30, 2024
FUEL/PROPULSION SYSTEM
After fuel pump recall replacement, engine stopped on the highway with OBD message of low fuel pressure.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11568507January 29, 2024
SEAT BELTS
Rear seat belt latch plates (both driver and passenger side) retracted into the rear side paneling behind the seat. Both seat belts are now unusable. Issue occurred after rear seats were folded flat and then returned to upright position. Vehicle does not have dynamic locking tongue latch plates in the rear seats. MB dealership and MB customer care both claim that vehicle is not under NHTSA recall 18V-177 despite fitting the issue description, make & model, and production date.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11568277January 28, 2024
ENGINE, ELECTRICAL SYSTEM
Check engine light on, according to Mercedes Benz problem related to 48 V mild hybrid,I took twice car to the dealership ,they can’t reset check engine lights GLC 300 2023 With 3500 miles
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11567054January 22, 2024
EXTERIOR LIGHTING
Vehicle left/front headlight has water condensation and entire headlight doesn't work. Its pretty much not drivable. I brought the vehicle to a manufacturer dealership and they claim that the failure of the headlight is due to physical impact to the exterior of head light. There is a minor scratch barely visible and no cracks or physical damage to the headlight or seal, or car or that matter. When I asked if they performed an inspection due to a recall associated with the headlight (recall # 2022050005), they confirmed that they did not inspect for this issue since my VIN # didn't reflect this recall. They said since the recall wasn't associated with this VIN that the manufacturer would not cover as part of warranty and gave me an estimate of nearly $4,000. It seems very coincidental that my car is experiencing the same issue as noted on the recall report but because there is a small scratch in the headlight, the manufacturer dealership will not be able to move forward with a warranty claim even though they didn't fully inspect the issue based on the recall. In addition, my car was having notifications go off for the right/front headlight and there are NO scratches. Still no inspection was made. I was told by Mercedes Corp Customer Care to report this so my VIN can be associated with the recall. PLEASE HELP!!!
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11567062January 22, 2024
FUEL SYSTEM, GASOLINE
The contact owns a 2021 Mercedes-Benz GLC300. The contact stated that while his wife was driving in the rain approximately 35 MPH, the vehicle lost motive power and stalled. The vehicle was able to be restarted. The vehicle was taken to a dealer to be diagnosed. The contact was informed that the cylinder head needed to be replaced. The vehicle was repaired but the failure reoccurred. The contact believed that the failure was associated with NHTSA Campaign Number: 23V445000 (Fuel System, Gasoline) however, the VIN was not included. The manufacturer was notified of the failure. The failure mileage was 19,369.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11566770January 21, 2024
ENGINE
Engine light error code P-052e71. The crankcase ventilation valve malfunction. This is reported by a lot of customers.. It cost about $2000 to fix this problem.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11566824January 21, 2024
UNKNOWN OR OTHER
I bought this car brand with 4800 miles directly from Mercedes a month ago. The check engine light has been on since the second week of ownership. The reason I’m submitting this report is because it’s been into warranty service 4 times. Each time Mercedes Benz says that it is a known issue affecting ALL GLC300 models. They also indicate that it is a software issue, but don’t have a patch for it. There are other things like Bluetooth, no radio audio, and the remote start that they are also attributing to this software glitch. However, the check engine light presents a MAJOR safety issue. Please force Mercedes to issue a software update recall to fix the incessant check engine light.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11566604January 19, 2024
ENGINE
Brand new 2024 GLC300 4MATIC with less than 750 miles. Check Engine light came on with no error message explanation. Brought it in to dealer for service - Found fault code POA7F00. Dealer followed LI54.10-P-077250. Cleared codes. Check engine light is still on with no resolution to problem at this time. Was told to ignore and keep driving. Driving with check engine light illuminated is a safety concern for me.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11566466January 19, 2024
ELECTRICAL SYSTEM:12V/24V/48V BATTERY
The contact owns a 2024 Mercedes-Benz GLC300. The contact stated that upon starting the vehicle, the check engine warning light illuminated. The vehicle was taken to a dealer and the contact was informed that the 48V bolt battery had caused the check engine warning light to illuminate. The contact was informed by the dealer that the temporary fix would be to reduce the battery charge to 25% then charge the battery to 75%. The check engine warning light returned soon after the fix and the contact was informed that there was no permanent fix for the defect. The manufacturer had yet to be notified of the failure. The vehicle had yet to be repaired. The failure mileage was approximately 1,800.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11566165January 17, 2024
POWER TRAIN, ELECTRICAL SYSTEM, UNKNOWN OR OTHER
Brand new '24 GLC300 4MATIC. Engine light came on with no error message. Brought it in for service. Miscellaneous engine repair states: "Found current code POA7F00 in drivetrain control unit. Followed LI54.10-P-077250. Cleared codes. Drained 48V battery to below 25% SOC. Charged vehicle to 70% SOC. Job complete." Service foreman mentioned that the service performed may not resolve issue. He contacted Mercedes-Benz Engineering and said no fix at this time and no ETA. Left service with no more engine light on. However, it didn't take long, and the engine light came on again. I called service again, and I was asked to take the car back in to be sure it is not anything else. Took my vehicle back, and service foreman diagnosed the issue. Code is the same as before with issues on the 48V battery. Service foreman is unsure of the exact issue. Mercedes-Benz Engineering did not provide details of the problem. I believe this issue poses a safety risk without knowing for sure what is the real cause and what might be the effects on the vehicle. This GLC is my family daily use, and it has become a big safety concern on the road. Service was very helpful and accommodating with my vehicle's issues. Unfortunately, fix is unknown from Mercedes-Benz to be able to resolve. I have also called the Mercedes-Benz Customer Care, 800-367-6372. Unfortunately, there is nothing they can do. I've asked to open a case. Case # [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11565695January 16, 2024
FUEL/PROPULSION SYSTEM
Smell of gas
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11565159January 12, 2024
ENGINE
On 12/17/2023 at approximately 6:00 am while traveling to a friends house, my car stalled out on me. The engine light came on and the car started hesitating ( sputtering) and then shut off. I tried to start the car and it did with the engine light still on. I called a tow truck and had it towed to Carlton Mercedes. On 12/18/2023 the service advisor contacted me via text to say they will do a diagnostic to find the problem and will be in touch. 5 days later, i was told that the sensors were wet due to standing rain water I encountered and that nothing else was wrong. I picked up the car later that evening. 3weeks later the same exact thing happened. The car started sputtering (hesitating) the engine light came on and it shut off. Although my VIN number was not apart of a recent recall for my make and model, I would like the Safety Department to investigate the issue and have my car added to the recall list. The recall address the issue of loss of power to vehicles of the same make and model as mine. The Mercedes Manufacture will not fix my car under the recall if it hasn't been added to the list. I don't believe the consumer should have to pay simply because the VIN was added to the list even thought the problem exist. Please Help!
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11564146January 8, 2024
EXTERIOR LIGHTING, ELECTRICAL SYSTEM, ENGINE
2 SEPERATE ISSUE DIGITAL LIGHTING FAILED, THEN 2ND ISSUE WHICH IS STILL BEING WORKED ON, BEEN A WEEK WITHOUT THE VEHICLE WHICH IS ONLY A MONTH OLD WITH 1100 MILES ON IT, THE ENTITE SYSTEM ISNT WORKING WITH LOTS OF CODE ERROR MESSAGES AND WILL NOT START. THE CURRENT UPDATE FROM MERCEDES IS THEY STARTED A CASE AND TESTING THE VEHICLE AFTER REPLACING THE POWER TRAIN. THE TECHNICIAN AGREED THIS IS NOT NORMAL FOR SUCH A BRAND NEW CAR. I AM CONCERNED FOR MY FAMILYS SAFETY AND THINK THIS IS A LEMON
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11564308January 8, 2024
FUEL/PROPULSION SYSTEM
Attempting to get recall completed but manufacturer and dealer are non-responsive. Mercedes stated that if a failure occurs life and limb are at risk (slightly paraphrased). Mercedes says in the recall notice that the repair will take 1-6 hours. Scheduled for a Friday and the Service Advisor sent confirmation and at least one appointment confirmation. At the shop by 8am. Service Advisor immediately tells me that the repair will take two days. It is a Friday. Means they will keep the vehicle through Monday. Thought a Service Advisor whose jobs are service and advising would perhaps called and maybe suggest rescheduling for other than a Friday so we would not be short a vehicle for four days. Or maybe, as the Sales guy promised us, have a loaner for times we would be without a vehicle for extended periods. Another Service Advisor, overhearing the conversation, intervened. Seems Service Advisor Number 1 might have been incorrect, suggesting that he had limited knowledge of the vehicle he was advising about. Service Advisor Number 2 said that the issue with this model could be completed faster. So Service Advisor 1 talks to the technician in the shop and comes back and says it probably can be done in a day. Probably. Not within the 1-6 hours stated in the Mercedes recall notice. I declined. Had already been burned with same vehicle unnecessarily kept overnight before, and this was a Friday so risk was losing the vehicle for four days. Asked that he call me to reschedule when loaner was available. He agreed. He reviewed phone numbers and said he would call by end of day. No call. I contacted Mercedes and was promised dealer was diligently working to get this done and would contact me). Five weeks have passed and no call. Not sure if intentional or incompetence but unacceptable.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11563288January 3, 2024
ELECTRICAL SYSTEM, ENGINE
This vehicle has now had three episodes where warning lights came on for no apparent reason. There have been two episodes of "Check Engine Light" coming on, the first with less than 1000 miles on the vehicle. It was driven to the dealer and they checked finding no problems and said not to worry about it. The second about two months later with an indication of "Excessive engine Temperature", but the engine was cold and just started, the fan was running very fast, but otherwise the vehicle was operable. Again, the dealer could find no problem and said to ignore it, but return if it recurred. Two months later, check engine light on again. Currently at the dealer for service for a third time. No faith in the reliability of this car with the reports of this leading to engine stalls and failure to start in other cars.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11563307January 3, 2024
FUEL/PROPULSION SYSTEM, ENGINE
My car was in for a "Problem" Dec-2023 - would not accelerate /also getting very bad gas mileage and hesitation on accelerating. 1ST - Mercedes Benz said I got bad gas - they had the car for several days -Then they thought it was a computer issue - Later -after problem -I got a Safety Recall Notice # 23V456 stating "Fuel Pump Problem "told would receive Official Re-Call in February -Went back to dealer with same problem -was told wait for re-call -Called 1-800-367-6372 Mercedes Benz - spoke with "Heidi on Jan 3, 2024 [Case Number [XXX] ASKED IF THEY COULD EXPEDITE RE-CALL CLAIM BEFORE FEBRUARY - MERCEDES DECLINED - If the "Fuel Pump is an issue [and Dangerous ] why not expedite ""Parts"" Mercedes Dealer wasn't aware of Re-Call number 23V456 - INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11563324January 3, 2024
ENGINE, ELECTRICAL SYSTEM, FUEL/PROPULSION SYSTEM
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.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11562589December 29, 2023
SERVICE BRAKES, UNKNOWN OR OTHER
I have had issues with squeaky, very loud noises at slow speed and reverse braking. I have had this issue since I purchased this vehicle. I have brought it in a few times to have 2 different dealers fix the noise as I believe it is a safety issue as well. They said this is a common issue with GLC that they have noises while braking but there is no fix. I had an advisor drive the vehicle and witness loud squeaky noises while braking. Spending a lot of money on this vehicle, and Mercedes should fix this issue. I believe the brake system falls under lemon law and Mercedes should do something to mitigate the issue. The brake pads were okay upon inspection, but pretty soon I will have to pay a lot of money to replace pads at my own expense when the brakes, pads, rotors, etc themselves should be replaced and fixed at Mercedes expense.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11562425December 28, 2023
FUEL/PROPULSION SYSTEM
There is a problem with the fuel pressure sensor or wiring to the fuel pump control unit. This causes the fuel bay door to malfunction, meaning sometimes it won't open and sometimes it opens on its own. Today, my local Mercedes dealer (Mercedes of Seattle) quoted $5081.00 to repair this. See attached electronic quote that I rejected and then it disappeared but I saved a screenshot of it. The car has less than 20,000 miles on it. This issue first appeared about a year ago, indicated by a solid yellow warning light (vehicle icon) on the dashboard.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11561338December 21, 2023
UNKNOWN OR OTHER
After seeing a warning light in my car's dashboard I took it in to be checked and learned the PCV intake hose had malfunctioned. This malfunction causes emissions dangerous to the environment and air quality. The condition was confirmed by an independent service center, a replacement PCV intake hose assembly ordered and installed. The warning light had been going on and off for a couple of months. When it stayed continuously on I took it in to be looked at. It was diagnosed and I had it repaired.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0

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