2017 MERCEDES-BENZ C 300 Complaints

The contact owns a 2017 Mercedes-Benz C300. The contact stated the seat belt retraction failed. The contact stated the seat belt got stuck between the driver's door and the vehicle and she was unable to open the vehicle, so contacted the manufacturer's roadside service for assistance. The roadside service unjammed the door. The contact was unaware of the warning lights illuminated. The vehicle was not diagnosed or repaired. The manufacturer was notified of the failure. The contact related the failure to NHTSA Campaign Number 21V032000 (Seat Belts). The approximate failure mileage was 1,000.

The contact owns a 2017 Mercedes-Benz C300. The contact stated that while driving at various speeds and attempting to make a turn, the steering wheel was significantly difficult to turn. The contact stated that he was able to drive the vehicle however, an extra effort was needed to steer the vehicle. The contact stated that the failure had been reoccurring while driving. The vehicle was taken to the local Pep Boys who informed the contact that they could not duplicate the failure. The contact referenced NHTSA Campaign Number: 18V850000 (Steering). The dealer was not notified of the failure. The vehicle was not diagnosed nor repaired. The manufacturer was notified of the failure and referred the contact to the NHTSA for assistance. The failure mileage was approximately 65,000.

My check engine light keeps jumping off and on, went to get diagnosed and the PCV valve came back. I’m not sure why

Issue: Front driver and passenger seat belts do not fully retract despite completed recall service. The seatbelts often "puddle" behind the seats when unbuckled, and sometimes get trapped between their seat and adjacent door. My car was recalled and serviced under Mercedes Campaign 2021020010 to fix this in October 2021. Also, the right front seatbelt was replaced in October, 2018 under Campaign 2017050023. The first paragraph of the Mercedes Recall Campaign Bulletin states, "...certain C-Class Cabriolet vehicles (A205 platform) with PRE-SAFE might not meet the requirements of FMVSS 208, S7.4.5., as the front seat belts might not fully retract to its stowed position. In this case, certain regulatory requirements under FMVSS 208 might not be fulfilled. If the seatbelt webbing does not fully retract into its stowed position, the consumer may find the operation of the seatbelt inconvenient and not wear it, increasing the risk of injury in the event of a crash." In its step 1, the bulletin states, "The seat belt strap must retract into its final position automatically. Provide manual assistance with rolling up the seat belt strap if necessary." Having to provide manual assistance to retract the seat belt does not meet the definition of "must retract into its final position automatically". Further, it does not meet the aim stated in the bulletin's first paragraph about the importance of the seat belt fully retracting. The labor time spent on campaign was only 0.10 hours (6 minutes), so nothing more than a cursory inspection was done, and not any actual service work. I spoke with my local Mercedes dealer and the Mercedes USA customer service rep. They are both Ok with manually feeding the seatbelt into its slot. This is unacceptable and does not meet FMVSS 208. Both the dealer and the Mercedes USA say I can pursue proper fix at my expense. This is a failed recall service and I should not have to pay to explore a proper remedy.

Diagnosis code P052E PCV regulator valve replacement/crankcase replacement. Dealership does not want to acknowledge code while car was under warranty despite proof that it existed when check engine was diagnosed. Now code keeps coming back with check engine light on dashboard. To replace part, the engine has to be taken down since the crankcase is inside the engine. This is a malfunction during assembly/manufacturing, it is impossible to damage part while under usage. Mercedes Benz should be held responsible for part replacement and labor. I urge you to investigate this matter with other clients and ask the manufacturer to replace part and pay for labor.

The contact owns a 2017 Mercedes Benz C300. The contact stated while driving at a slow speed in traffic, another vehicle rear-ended and caused her to crash into the vehicle in front. The air bags did not deploy. The contact sustained injuries to the back of her head, her left shoulder, right wrist, and right arm along with chest pains and facial contusion. The contact sought medical attention at an emergency room. A police report was filed. The vehicle was not drivable. The contact towed the vehicle to her residence. The vehicle was not diagnosed or repaired. A dealer was not contacted. The manufacturer had not been informed of the failure. The failure mileage was approximately 57,000.

Check engine light came on, took it to the dealership. It is the Crankcase Ventilation Valve that is once again broken. It helps to accurately depict emissions. It is a known problem that hundreds of other drivers are reporting on forums https://www.benzworld.org/threads/2015-c300-crankcase-ventilation-valve-replacement-p052e71.3047538/page-1 https://mbworld.org/forums/c-class-w205/739851-check-engine-code-p052e.html There needs to be a recall, this is a consumer protection and environmental safety issue.

misfire cylinder 1 46300 miles on the engine.Mercedes dealer told me I need new engine and they are not providing warranty coverage.

At approximately 26,500 miles of use, the check engine light came on in my Mercedes Benz C300. I brought the vehicle to the dealership and they informed me that the diagnosis was a crankcase vent valve malfunction. The MB fault code is P52E71. After paying Mercedes to fix the issue, I found forums on the internet where many other MB owners reported the same issue at around the same mileage. Being that this seems to be a common malfunction with the C300, I believe that it should be considered as a recall issue. I don't know what could have happened if I didn't service the vehicle, but any engine issue is dangerous while a vehicle is in motion.

I’m trying to ship my car back to the United States and there is a valid recall on my car which I have taken it to the dealership in Korea, which is where I’m currently at, and I cannot get me car updated either because they don’t understand the paper or because I don’t have an official recall which I have also encountered in the states. Without this update my car will not be shipped back home with me. Is there any way I can get this recall information in Korean to possibly make them perform the update.