the roof panel cracked straight down the middle

- Waterbury, CT, USA

My car on has 80,000 miles and the camshaft position sprockets needs to be replaced. I went to a Mercedes dealer and this was the diagnostic. This causes the engine light to come on, hesitant engine, low acceleration while driving. The dealer said it will cost $8,000 to be replaced and still can go bad. There was a recall for this issue before. RecallCampaign2015100007

- Miami , FL, USA

Error Code: P052E Crankcase Ventilation Valve Malfunction. Part was changed before and Engine Light still comes on. Vehicle is available for inspection. Vehicle was inspected by Mercedes Dealership several times. Part is on Backorder Nationwide. Car Does not pass emissions inspection, therefore cannot renew registration either for several months.

- Woodhaven, NY, USA

On my way to work driving 25 miles per hour I could hear my sunroof moving without me touching the controls. I am terrified the sunroof is going to fly off. After work today my car will stayed park. Merecedes benz needs to make this right. To many complaints on this panoramic sunroof on this year of car.

- Holland , OH, USA

On [XXX] I was on my way home from running errands and proceeded to open my panoramic sunroof using the button inside of my car. When I arrived home, I pressed the button again to close the sunroof. As it began closing and went into the forward position, once it reached the top of my roof, the back of the sunroof would not go down back into place. This left the sunroof open in the venting position. On [XXX], I went to RBM of Atlanta where I purchased the vehicle [XXX] to report and resolve the issue. The service center was rude and brushed off my concerns. They were able to manually close the sunroof as a temporary fix and informed me not to use the sunroof button, but they were unable to assist with my diagnostic or repair inquires. However, one of the service employees advised that this was a common issue that was previously recalled. I immediately contacted MBUSA where I was connected to a Sales rep at RBM of Atlanta who also informed me that this was a common issue. Today, 07/24/2024, I went to a diagnostic appt. at RBM of Alpharetta and was told by the service advisor that there had been at least 9 recalls for this issue and my sunroof has all of the defective parts that were supposed to be replaced when these recalls took place. He also informed me that I should have been advised of this issue before the vehicle was sold to me. I have attempted to resolve the issue with RBM on five different occasions to no avail. My vehicle is available for inspection upon request. I believe this issue puts myself and others at risk because if the entire sunroof is defective, it can detach at anytime and possibly hit and injure someone while I'm driving, which would make me liable. As stated previously, I have received confirmation that my sunroof is defective and should have been added to one of the several recalls. The last multi-point inspection was done nearly a year before I bought the car and a repair diagnosis was done today. There were no other signs. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT

- Duluth, GA, USA

Panoramic sunroof has not worked since I bought my car. Today it started making a weird sound. My sunshade started opening and closing on its own. I have had enough with this sunroof. I feel is no longer safe. There needs to be a recall on it. I have seen other complaints about the sunroofs. I don-??t want my sunroof to fly off and cause and injuries to anyone !

- Holland , OH, USA

So many Mercedes Benz owner have issues with the code p052e code postive crankcase ventilation regulator valve This should be a recall

- El Cajom, CA, USA

The vehicle is not passing emission inspection because the Positive Crank Case Valve/Ventilation failed to work after 48K miles.

- Parsippany , NJ, USA

P052e positive crankcase ventilation valve. Check engine light triggered by this code.

- Macon, GA, USA

I opened my panoramic sunroof it didn-??t open all the way and slammed shut. It didn-??t break but if it had there would have been injuries. This is a known problem with this years car. And it needs to corrected.

- Holland , OH, USA

While driving on the highway, I tried to open my panoramic sunroof, it made a grinding sound and was stuck in the open position with one corner for the sunroof slanted higher than the other. I was afraid that the sunroof would shatter or that the wind would blow off components. Afterward, the sunroof would not close even after I took it to the dealership. They informed me that they could not close the sunroof and my only option was to repair it for $4,000 or buy another car. After looking at the costs of replacement cars, I decided to pay for the repairs out of pocket. I found on multiple reddit and mercedes forums that this is a common issue in Mercedes C class vehicles made on and around 2016. My service advisor told me that he has so many customers from these panoramic sunroofs failing due to a cost cutting measure from Mercedes who decided to use plastic tracks instead of metal. He also informed me that they went back to metal a few years after my car was manufactured. This leads me to believe that Mercedes acknowledged the issue and is trying to hide it from NHTSA. Here is a link to a forum post that has a similar picture to how mine looked, notice that one side is stuck in a higher position. [XXX] Here is another post with others with similar issues [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

- Charlotte, NC, USA

I was taking my son to work and I heard my sunroof open and close when the controls were not being touched. I-??m afraid if it opens and it closes on its own that it could fly off my car and hit someone else-??s car and possibly injure some one.

- Holland , OH, USA

PCV Valve Malfunction, common in my model year.

- Brooklyn, NY, USA

PCV valve

- Green Bay , WI, USA

Positive Crankcase ventilation regularly Valve. This issue is in so many c300s and should be recalled for that reason.

- Rancho Cucamonga, CA, USA

Crankcase Ventilation Valve Emission Modification -Error P052E71 -Error P06DA00

- Hayward , CA, USA

Ac/heater smells like mold/musty/mildew inside the cabin. Took for the extended warranty but will not honor unless you have proof of cabin filters purchased every year. This is their way of finding a loop of not fixing the issue.

- Troy, MO, USA

My panoramic sunroof has an extreme amount wind coming through it while driving 40 miles per hour. I can also hear my panoramic sunroof sliding back and forth. I-??m terrified that that it will fly off while driving and cause a road hazard.

- Holland , OH, USA

Engine light with code P052E

- Lumberton , NJ, USA

In the past few months while driving this car in the Washington DC metro area at normal road speed, the car has suddenly and unexpectedly lost driver power. Each time, I have pushed down on the gas pedal, and after some hesitation the car has moved forward, and then continued to operate normally. This has happened three times in the past 3-4 months.

- Oakton, VA, USA