2009 MERCEDES-BENZ C300 Complaints

The contact owns a 2009 Mercedes-Benz C300. The contact stated while driving at an unknown speed, several unknown warning lights illuminated. The vehicle was taken to the dealer where it was diagnosed that the connector for the rear taillights was melted into the bulk assembly mount and needed to be replaced. The contact was then informed by the dealer of NHTSA Campaign Number: 14V177000 (Exterior Lighting) however, the dealer confirmed that the recall was previously completed. The vehicle was not repaired. The manufacturer was notified of the failure and the contact was promised a call back however, the contact had not yet received a response. The failure mileage was approximately 93,000.

The contact owns a 2009 Mercedes-Benz C300. The contact stated that while her husband was driving at an undisclosed speed, the vehicle swayed on the roadway. The vehicle was taken to an independent mechanic who diagnosed that the rear subframe was corroded and needed to be replaced. The mechanic contacted the dealer to order the replacement part and was informed by the dealer that there was a recall for the subframe; however, the VIN was not included. The vehicle was not repaired. The manufacturer was not made aware of the failure. The failure mileage was approximately 70,000.

Rear subframe corrosion discovered by Mercedes Benz Service.105,000 miles on the vehicle. Presents a safety hazard, possible loss of control the vehicle. Frames rots from the inside out, which leads to discovery after vehicle performance and safety is compromised.

Suspension Cross-Member - Mercedes-Benz (204-350-01-41) Driving regularly suddenly fill like the rear passenger side tire moved unevenly, then went to the tire shop, and when they take out the tire see how the rear frame was rusted and broken in a straight line exactly in the middle of the tire hole area. Then start to check used cars to donate that part and All of them have the same trouble in that piece, so I decided to review the frame and discover that the rust begins to damage the opposite side too, so I'm pretty sure is a component failure in metal and materials more than simple rust.

Steering Wheel locked due to ESL Module's motor failure making the car won't turn on, not drivable. Stuck, stranded.

The contact owns a 2009 Mercedes-Benz C300. The contact stated that the vehicle failed to start after several attempts. The vehicle was towed to an independent mechanic where it was diagnosed that the ignition switch and the steering lock had failed and needed to be replaced. The local dealer was notified of the failure and informed the contact that the parts were available. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 175,000.

Rear Subframe gets rusted and breaks is an issue with most of mercedes c300 to the point the part is back order in USA and Germany its a safety issue and there should be a recall for it when I called mercedes benz they told me they get at least 3 to 4 calls a day about that issue and people can't find the part it's a comment issue and it sounds be resolved.

2009 MERCEDES BENZ C300. CONSUMER WRITES IN REGARD TO PROBLEM WITH BRAKES. THE CONSUMER STATED THE MOISTURE CAUSED CORROSION IN THE BRAKE BOOSTER. THE CONSUMER REFERENCED NHTSA CAMPAIGN NUMBER 22V315. THE VEHICLE WAS REPAIRED. THE MANUFACTURER WAS NOTIFIED, BUT DECLINED ANY ASSISTANCE STATING THE VEHICLE WAS OUT OF WARRANTY. THE CONSUMER BELIEVED THE MANUFACTURER SHOULD REIMBUREMENTS THE PAYMENT DESPITE BEING OUT OF WARRANTY.

I took my vehicle to the Mercedes dealer for inspection on 7/13/22. It passed inspection, but I was told that the brake lines were very corroded and they recommended replacement before driving. Their cost to repair was $2825. I only have 54,000 miles on the vehicle. I checked on the internet to see if there were any other reported brake line issues with a 2009 Mercedes C300 and was shocked to see how many people had the same issue, some reporting that they lost brake power and had a very terrifying experience. Of course I am now afraid to drive the vehicle and not sure what my course of action will be. With the number of reported incidents, I feel that Mercedes used inferior materials that corrode readily and should have some accountability in remedying the situation. I am including some photos of the corrosion that were provided to me by the dealer.

My spouse was driving approx 40MPH. Traffic light turned amber so she applied the brakes, at that point the vehicle pulled violently to the left into on coming traffic and at the same time the vehicle rear end was fish tailing out of control.Our mechanc inspected the vehicle and discovered the rear sub frame assembly had cracked on the driver side. We were advised by the mechanic this car is un driveable. Our Insurance appraiser inspected the vehicle and stated this is very common with this model vehicle and is a very bad design flaw. I contacted the Mercedes dealership and they advised there is no re-call on the subframe so I would need to pay $4000-$5000 for the repair. This vehicle is worthless to me now and is a grave safety risk to drive. I do not have the funds to fix this vehicle so I am now without a car. Mercedes customer care will not even answer any telephone calls. I have called 3 times and been on hold for over 60 minutes each time. This design flaw needs to be corrected by Mecedes before someone gets killed.