CEL light- with code P052e positive crankcase ventilation regularly valve. Vehicle only has 62,000 miles

- Spring Lake, NC, USA

Check engine light came in so I took it to a local auto shop. They ran the diagnostics and the code that appeared was P052E(Positive Crankcase Ventilation Regulation Valve Performance).

- Bellevue, NE, USA

I was moving my car from one parking space to another space in front of my house. As I was pulling into the new space, I stopped to check the position of my car. As I lifted my foot off the brake, the car unexpectedly started to lurch forward. When I released the brake pedal, the car suddenly accelerated and proceeded to jump the curb and run into the front of my house. Luckily, no one was injured. There was some damage to the exterior of my house. I have reported this issue to the car manufacturer, Mercedes Benz. In response, they have opened a case to research it further.

- Baltimore, MD, USA

Check Engine light came on. Upon running the scan from three different reputed repair shops, they show same P052e Positive Crankcase ventilation valve replace message. It first came two months back, reset the code but it still came up.

- Troy, OH, USA

After locking car and walking away, engine starts, lights go on, and car doors become unlocked.

- San Diego, CA, USA

I was driving my 2016 MB C300 on a clear sunny day (approx 85 degrees outside) going around 50 mph when out of nowhere my pano sunroof exploded (extremely terrifying sound might I add!)! I never open my sunroof and it did not have any chips or cracks at all so there is no explanation. Almost the entire sunroof shattered! Mind you I was driving on an open road (no trees, overpasses, bridges, etc). No cars in front of me and closest car was around 1/4 behind me. Shards of glass fell on top of me and went all over the interior of my car. I almost drove off the road and could have gotten glass in my eyes! After inspecting, it almost appears as if the glass exploded outwards. This is a major safety concern and needs to be addressed ASAP by Mercedes Benz before someone gets killed!

- New Orleans, LA, USA

- CRANK CASE VENT VALVE malfunctioned, it was available for inspection upon request with fee - It made oil burning smell - The problem has been confirmed by a dealer and replaced with an expensive fee - Engine check light was

- Dix Hills, NY, USA

Check engine light Crankcase ventilation valve failure Mercedes dealer diagnostic

- West Jordan, UT, USA

The system that failed is the rear backup camera. The dash screen becomes black after initiating the car into reverse. The screen also glitches green and other times black. I have also received a -€œno camera-€ circle behind my rear backup camera with the 360 degree camera. I cannot use my rear backup camera as designed because of the issue. Even putting the vehicle back in park and then back to reverse does not remove the issue. This has happened on multiple occasions just this week. This started this week in my car. 1/21/2022 was the first time it happened. It has happened every day since and multiple times. I have photos and videos of the issue. The photos are attached to this report of the safety issue. I am unable to upload the video but can send upon request to an email.

- San Francisco, CA, USA

Mercedes-Benz comes with ECO Start/Stop feature. This feature automatically activates when you start the vehicle and have your seat belt fastened with the door closed. When this function is activated, your vehicle-€™s engine will shut off when you are at a complete stop, like at a stoplight or in standstill traffic. Once it-€™s time to start moving again, the vehicle-€™s engine will automatically restart as soon as you lift your foot off the brake. Randomly experiencing an issue with this feature, vehicle will not restart or it will shutdown in the middle of the road, on the busy road or freeway, it is very unsafe or dangerous. In last two years, we experienced this issue for at least 10 times, at least 5 times vehicle was towed to Mercedes Benz service center in Pleasanton, CA. They replaced the battery, starter, relay but issue still exists and service center also do not have any clue on how to resolve this issue. Reported this issue to Mercedes Benz Customer Support but response has not been favorable. I am not the only one facing this issue, several people reported this issue on online blogs, online channels and discussion boards. Mercedes Benz is ignoring the issue and not serious on addressing it. I request NTSB to investigate this issue, it is risky and dangerous. I personally had couple of close calls with other vehicles rear ending, and I am sure others must have found in this situation. Appreciate your help. Thanks, [XXX] INFORMATION Redacted PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6).

- Pleasanton, CA, USA

My car's stationary roof panel (part no. 205-780-00-22) that's located between the windshield and the panoramic sunroof started to come off while driving. The panel started to flick off and I had to tape it temporarily, so it doesn't fly off when driving. It looks like the adhesive holding the panel gave out on the driver-€™s side. Panel was previously replaced at Mercedes Benz of Tysons Corner.

- South Riding, VA, USA

while driving on a highway a part of my roof panoramic fell risking my life and other people's life, I then sent an email to Mercedes Benz and they told me that this part is a subject of a recall. I took the car for two days and they told me that the part is not available for the moment and they need to order it from Germany with no ETA but at least 2 weeks. I asked them if I can safely drive without that part and they said it is ok. Yesterday while driving under light rain, water went in the car through the roof and through the missing part place onto the dashboard. And suddenly the panoramic roof opened alone and did not want to close while I was driving on the highway under the rain. I had to leave my car with an open roof. This roof issue is a repercussion of that item subject of the recall in addition to telling me that driving was safe without that part and turned out to be unsafe. I sent Mercedes Benz an email asking to fix all this mess for free and still waiting for an answer! Much appreciated, Ali

- Coral Gables, FL, USA

Rear view camera is not working. Frozen. I was pulling into the garage. I had to back up so put the car in reverse and then switch to drive forward and the camera froze.

- South Barrington, IL, USA

Glass piece in front of sunroof of panorama roof flew detached and flew off while driving. I was driving on freeway about 80 miles per hour on a straight stretch. It was not hit by anything. Just the wind. Cost to repair $2178 at mb authorized dealer.

- Irving, TX, USA

On October 15, 2019 and on July 1, 2020 the glass panel which is located in front of the panoramic sunroof blew off the car while driving on the highway. This piece of glass does not move and became a dangerous projectile endangering other vehicles. I would guess the glue is not bonding properly

- Fort Myers, FL, USA

In addition to a strong, noxious, moldy odor, vehicle's front windshield fogs over so totally that it becomes dangerous in highway driving. The HVAC/climate-control system's defroster is unable to clear more than the bottom few inches of the windshield: The only way I can see through it is to wipe away the fog with my hand. This happens when the vehicle is in motion but persists when it is stationary. This happens in almost any weather, but especially if there is moisture in the air(fog, rain).

- Sea Island, GA, USA

I had been driving for 5-7 minutes I was going down a slight incline on a rural road and took a right hand turn. The driver's door opened and a red warning light came up on the dash. I immediately applied the brakes to stop my vehicle and looked at the door. I noticed that the door lock button was still down. I was able to pull the door closed. My son was in the passenger seat and witnessed this, we were shocked to say the least. Carriage house of new london 488 colman street, new london ct 06320 ph# 860-447-3361 picked up my car and ran diagnostics they said they found nothing wrong. The invoice number associated with that service call is 79121

- Bristol, CT, USA

The tires supplied on this car are unsuitable for intended use. Low profile tires are easily damaged by potholes (we live in Chicago) and without constant inspection for "bubbles" present a hazard. This car is two years old with 8800 miles on it and is on it's 4th front tire. In as this is how the car comes, and the dealer as acknowledged this is a common problem they have clearly sold tires that are in the long run not safe.

- Chicago, IL, USA

I was driving down the freeway at approximately 65 mph and the panoramic sunroof on my Mercedes C300 exploded. I say "exploded" because nothing struck the glass and most of the glass blew out and off the car, not in. The sunroof was closed at the time, so there was no wind pressure. After I stopped, you can even see where the glass remaining is sticking up, not down. The shade was open so glass did fall into my car, cutting my arm. If kids or others were in the car, it would likely have cut them or could have resulted in glass dust in their eyes, etc. It also could have caused an accident by scaring me but also since much of it blew off my car, it put the cars behind me in danger and could have caused them to crash. Mercedes has not taken responsibility of this yet, but I have brought this to their attention. The vehicle was only a little over 1 year old and only about 17,000 miles on it. No way should this have happened. I have more pictures, if you want them.

- Missouri City, TX, USA

When traveling at speed over 65, car will begin shaking violently and hesitation occurs. This is erratic-3 instances. Terrifying! another problem -started car began hesitating, unable to go over 30mph and smelled a burning odor. Could not drive car.the car has been checked by dealer twice-nothing found.

- Palm Beach Gardens, FL, USA