Mercedes-Benz GLC 300 wipers problems

Filed Dec 10, 2025 · SC

On Saturday 12/6/25, I put my 15 year old cat in his carrier in the back seat and closed the door. I got into my car and opened my garage door. I started my MBGLC300 and began backing my car out of my garage. As soon as the car rear end cleared the garage, I heard an explosion "BOOM", and the sound of breaking glass. I pulled back into my garage only to find the entire back window had exploded... all the glass was gone, and the back windshield wiper was dangling out of its housing from the pane (trim). I hit nothing! Nothing hit me! I got back into my car and drove the 10 minutes down the street to my vet's where he got his shot and I had him combed out (for any glass - thank goodness there wasn't any). While there, I phoned Dick Dyer Mercedes Benz (803.828.6952) at 8:57 AM,and spoke with Ryan Smith and told him I'd be down after the vet appointment. I pulled in at Dick Dyer service department shortly after 9:00AM. He said, "I've never seen anything like this." The whole glass was shattered into millions of tiny pieces. Smith got me into a Sedan and I drove home. On Monday Smith called to tell me Mercedes would not honor either my factory warranty (my car is a 2022) nor would my Extended Warranty (purchased at the time I bought my car) cover the $4,201.00 charge to repair. I'm a school teacher. I don't have that amount of cash. He said, "Ms. [XXX] , I want to believe you that you didn't hit anything, but I have to have proof." Therefore my only way to get the car repaired is to go through my insurance company. What a rip off! I totally thought Mercedes was a company that would stand by their products, especially those under not just 1 factory warranty, but a 2nd extended warranty. And, I got called a liar to boot. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Mar 18, 2024 · Visibility · 500 miles · FL

The contact owns a 2017 Mercedes-Benz GLC300. The contact stated that while driving at an undisclosed speed, the windshield wiper blades detached. The contact stated that the vehicle was purchased new in 2017. The contact stated that whenever it rained and the wipers were activated, the wiper blades would detach and flop over the front windshield. The contact stated that the vehicle had been taken to the dealer several times and the wiper blades had been replaced several times; however, the failure was persistent. The vehicle was not diagnosed or repaired by an independent mechanic or dealer. The manufacturer was made aware of the failure and a case was filed. The failure mileage was approximately 500.

Filed Mar 14, 2024 · Driver assistance, Electrical · WY

The windshield washer pump failed due to the Sam unit. Failing I was in the mountains, started my car the windshield wiper malfunction light came on the wipers worked for a minute, so I turned them off, drove over the pass and tried to use my wipers, and they did not work. The back wipers did work. I took my car to my mechanic in Cheyenne, who discovered that’s the SAM unit Ruined the windshield washer pump. No one else has inspected it other than my mechanic. I have learned that there are others complaining of the same issue online. This is a dangerous issue when you are driving in a storm with no windshield wipers. My mechanic believes this should be a recall issue, and so do I. The Mercedes dealership said my mechanic, a faulty Sam unit to replace the Sam unit that went out. Now my car is throwing all kinds of codes and the back windshield wipers do not work.

Filed Sep 13, 2023 · Acceleration, Electrical · 10,000 miles · PA · crash · 1 injury

The contact owns a 2022 Mercedes-Benz GLC300. The contact stated while driving out of a parking lot at 5-10 MPH and making a left turn, the windshield wipers and the rearview camera engaged independently. Additionally, the vehicle accelerated unintendedly and crashed into another vehicle that was unoccupied and parked on the left side of the road. The air bags did not deploy. The contact sustained bruises and soreness around the left elbow, but did not seek medical assistance. A police report was filed. The vehicle was towed to a Mercedes-Benz auto collision center, where she was informed that the front driver' side suspension was fractured due to the collision. The dealer was notified of the failure. The vehicle was not diagnosed nor repaired. The manufacturer was notified of the failure, and a case was opened. The failure mileage was approximately 10,000.

Filed Aug 8, 2023 · Seats, Visibility · 32,831 miles · FL

The contact owns a 2017 Mercedes-Benz GLC300. The contact stated while activating the front windshield wipers, the wiper blades started scratching the front windshield. The vehicle was taken to the dealer and the front windshield was replaced. The contact stated that the failure occurred several times before the failure was corrected. On another occasion while entering the front driver side door, the contact became aware that the extended bar in the seat had protruded through the seat cover. The vehicle was taken to the dealer and the contact was informed that the front driver’s side seat needed to be replaced. The vehicle was repaired but the contact stated that the failure had occurred several times before the failure was corrected. On another occasion, the contact became aware that there was fluid leaking from the vehicle. The contact examined the vehicle and notice that the windshield washer fluid was leaking from the washer fluid reservoir. The vehicle was taken to an independent mechanic and was informed that the windshield washer fluid reservoir needed to be replaced. The contact was advised to contact the local dealer. The vehicle was taken to the dealer who stated that the vehicle needed to be diagnosed. The vehicle was not repaired. The manufacturer was contacted and referred the contact to the dealer. The failure mileage was 32,831.

Filed Jan 18, 2023 · Visibility · OR

Since I purchased this vehicle 2.5 months ago, the windshield wipers started chattering/making noise and not working properly after about 2 days. I brought the car in and the dealership replaced the wipers. The chattering started again shortly after, then the dealership polished the windshield. It worked well for about 2-3 weeks and now the wipers are starting to streak and chatter again. I have a third appointment to have the windshield re-polished and wipers replaced, again. I have no faith this will fix the issue since its been done before. I see that this is a common issue with this brand/model.

Filed Jul 9, 2021 · Visibility · TX

On day zero when I bought the car, it was raining. The new car wiper was shattering or making bumpy movements. It was not cleaning the heavy rain water or it was spotty. The Mercedes mechanic told it is a known issue and there is no permanent fix. They just changed the wiper blade and put solvent on windshield which may be good for few days/weeks and need to take the car everytime, I have this issue till I have warrantee. This is very annoying and safety issue in Houston rainy season. It can happen anytime in the middle of busy road and under rain.

Filed Sep 30, 2019 · Visibility · 28,000 miles · TX

Tl* the contact owns a 2016 mercedes-benz glc300. While driving various speeds, the windshield wipers were inoperable. The vehicle was taken to mercedes-benz of georgetown (7401 I-35, georgetown, tx 78626, (512) 930-6150) and was temporarily repaired. The contact was unaware of the repair specifics; however, the failure recurred. The contact mentioned that the windshield wipers were previously replaced, but the failure continued. The manufacturer was not made aware of the failures. The failure mileage was approximately 28,000.

Filed Jul 12, 2019 · Visibility · 100 miles · FL

Wiper blades on windshield skip during driving on roads at all speeds, even on the highway and in the rain and hard to see the road when driving . They do not clear the windshield and constantly skip across every time. I have had mercedes benz replace and adjust my brand new car wiper blades and still the problem continues. I called 1800mercedes and they said they are aware it is a known problem and will let me know if and when it gets resolved. No other wiper blades on the market from auto zone, advance auto parts etc., will fit my car!!

Filed Apr 29, 2019 · Visibility · 10 miles · FL

Tl* the contact owns a 2018 mercedes-benz glc300. The contact stated that the windshield wiper blades were not functioning properly and the manufacturer failed to provide a remedy. Mercedes-benz of fort myers (15461 s tammany trail, fort myers, fl 33908, (800) 351-7403) replaced the windshield wipers four times , but the failure recurred. The manufacturer was notified of the failure several times. The failure mileage was available. *bf consumer stated this is a "dangerous condition" especially in the dark. Failure milage and failure speeds were noted as all.