2016 Mercedes-Benz C300 complaints

PCV fault

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

The contact owns a 2016 Mercedes-Benz C300. The contact stated that while driving during rainy weather conditions, water leaked through the sunroof into the interior of the vehicle. In addition, while attempting to close the sunroof, the sunroof glass remained open and slanted on the front and rear diver's sides. Upon further investigation, the contact related the failure to NHTSA Campaign Number: 16V087000 (Visibility); however, the VIN was not included. The vehicle was taken to a local dealer where it was determined that the sunroof rails had failed and needed to be replaced. The vehicle was not repaired due to the cost. The manufacturer was notified of the failure and referred the contact to the NHTSA Hotline for assistance. The failure mileage was approximately 100,000.

The contact owns a 2016 Mercedes-Benz C300. The contact stated while driving 60 MPH, the sunroof glass detached. There was a roaring sound detected. There were no warning lights illuminated. The contact related the failure to NHTSA Campaign Number: 16V087000 (Visibility). The vehicle was taken to the local dealer, who added plastic to the vehicle. The dealer determined that the sunroof glass needed to be replaced. The vehicle was not repaired. The manufacturer was contacted but no assistance was provided. The failure mileage was approximately 25,000.

The contact owns a 2016 Mercedes-Benz C300. The contact stated while driving at an undisclosed speed and turning the steering wheel, the contact became aware that the vehicle had lost power steering functionality. The contact drove around for a while before driving back to the garage. The contact turned off and restarted the vehicle; however, the power steering functionality had not returned. The vehicle was taken to the dealer where it was diagnosed and determined that the power steering had failed, and a software update was needed. The vehicle had been repaired. The manufacturer was made aware of the failure and confirmed there were no recalls on the VIN. The manufacturer referred the contact to the NHTSA Hotline to report the failure. The failure mileage was 30,810.

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.

Check Engine light...P052E positive crankcase ventilation regulatory valve

My car broke down while driving on the freeway, with only 58,000 miles the piston broke in cylinder 1 causing my car to loose power can cause an accident due to breaking down on freeway problem has been confirmed by a certified mechanic shop check engine light started flashing the moment the engine failed

Error code P052E positive crankcase ventilation regulator valve performance

This vehicle was 2nd owner via Mercedes CPO. Note I bought this 2016 in 2018 on CPO, so recalls and technical notes were confirmed to be resolved. Had last taken to Mercedes dealership. Vehicle was always running fine until about 64,000+ miles when a check engine light came on while just entering the freeway and the vehicle started shaking violently. Continue to drive the vehicle for a few miles to get to the destination. Had the vehicle towed to the dealership and the dealership declared that cylinder 1 had lost 80% compression and had a cylinder 1 piston crack. This is consistent with numerous claims on Mercedes message boards. Mercedes dealership said that this vehicle was not drivable and was not covered under warranty. Requested $11,000 for single piston repair or $15,000 for full engine rebuild replacement. Please note that M274 engine has this complaint. The engine is apparently a Nissan collaboration designed i-4 turbocharged engine and car is assembled in Alabama. Internal Mercedes technical bulletins talk about piston wrist pins. So Mercedes know there is an issue and they know status on my vehicle. Mercedes dealers have sent me documents on piston wrist pins replacement status. The recommendation is to rebuild or buy new motor. So i have no confidence that an engine rebuild will fix the issue. All oil change maintenance records show proper oil at proper intervals and multi-point inspections. Correct use of premium gas was used. Vehicle had been inspected and given

Code P052E71 Saying the Crankcase is bad. Seems to be an issue with MB.

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 .

Check engine light p052e positive crankcase ventilation regulator value performance

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 b

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 !

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

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

P0952 sensor part not available untill Dec 2024 I have documentation from my mechanic

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

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 .

The complaint is about the sunroof which has an open recall with all warning signs and risks exactly identical to my make, year and model (2016 mercedes benz c300). More than 15,000 vehicles have been affected by this problem and the warning signs suddenly appear with the vehicle. Mercedes Benz after their investigation after several reports were filed, later found that the sunroof glass panels were installed without prior application of the primer (bonding agent) which was supposed to ensure the specified strength of the bonded joint. NHTSA received several complaints concerning this issue where the sunroof suddenly began shaking and rattling which began with the driver noticing excessive wind noises in the area of the sunroof while driving indicating that the panel might be partially separated from the vehicle. I began noticing this on Tuesday May 28th, 2024, when my sunroof tilted open on the left side and failed to open properly. Upon closing it, I began to drive, and the wind noise and excessive rattling was immediately noticeable. It sounded like the wind was forcing open my sunroof and was almost like the wind was about to pull it out. In fear, I slowed down to about 20mph, but it was still very noticeable. I got scared and immediately pulled to the side of the freeway and parked. Then I immediately looked up the issue on google and noticed that there was an open recall for the exact same issue, for my make, model and year. It was noted that the roofs if not fixed will

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)

Panel between windshield and sunroof is peeling off loosing the clear coat even when the car is only 40.000 miles and is inside the garage

A couple years back I had an engine light pop up and it was the code P052E which as I’ve done my research and read a lot of forums this is a common problem with the W205 Mercedes Motors. As of today 04/18/24 the engine light came on and I got it diagnosed to find out it is the same problem again. This repair is almost $2000 and it is due to Mercedes faulty manufacturing of the PCV valve. I have read things that say there has been extended warranty on it and a lot of submissions for recalls, that I’m not exactly sure of.

The contact owns a 2016 Mercedes-Benz C300. The contact stated that while driving at various highway speeds, the message "Check Power Steering" was displayed, and the steering wheel became stiff and very difficult to turn in either direction. The cause of the failure was not yet determined. The manufacturer was notified of the failure and informed the contact that the VIN was not included in NHTSA Campaign Number: 18V850000 (Steering). The contact stated that the vehicle had experienced the failure listed in the recall. The local dealer was not yet contacted. The failure mileage was 96,000.

I need Positive Crankcase ventilation valve replace It's a common repair that comes up with these makes/models

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 .

Front Stationary Sunroof Panel (between the windshield and the sunroof) deteriorating and cracking in the middle. I've read about a recall on previous year models that will extend to this year model or even further year but waiting on this recall to reach my vin number. I've seen same model year in other states have this issue resolved with the recall update in Feb 2024. This is related to the NHTSA Recall ID: 23V854.

I received a warning that my left front headlight was not working. I took the car to my dealer to have the light replaced. I was told that because this is an LCG assembly the entire assembly unit needed to be replaced and the cost would be $3,500.

There is a fuel leak in the engine area and as well.as.undermeath the vehicle and Mercedes only covers a extended warranty which is not fully fixing the issues gas is a dangerous thing and I would.wjy haven't there been a recall on this know.issue with these w205 Mercedes

Pcv valve has gone bad, and it seems like everyone i ask that is mercedes technician they all say these parts are terribly made and always break.

The Positive Crankcase Ventilation (PCV) valve is crucial for regulating the flow of gases in the engine's crankcase. If the PCV valve malfunctions or becomes clogged in a car like the 2016 Mercedes Benz C300 4-matic, several problems can arise: 1. **Increased Pressure:** A malfunctioning PCV valve can cause pressure to build up in the crankcase. This increased pressure can lead to oil leaks, gasket failures, or even engine seals blowing out. 2. **Poor Engine Performance:** When the PCV valve fails, it can disrupt the air-fuel mixture in the engine, leading to rough idling, stalling, or decreased fuel efficiency. This can result in a loss of power and overall poor engine performance. 3. **Contamination:** A faulty PCV valve may not properly route harmful gases, like unburned fuel and moisture, out of the crankcase. This can lead to contamination of the engine oil, reducing its effectiveness in lubricating engine components and potentially causing premature wear and damage. 4. **Increased Emissions:** A malfunctioning PCV valve can result in increased emissions from the vehicle, as it may not properly recirculate harmful gases back into the combustion chamber for burning. Overall, a nonfunctional PCV valve can negatively impact both the car's performance and the environment, potentially leading to costly repairs and increased pollution. Additionally, prolonged exposure to increased emissions from the vehicle can be harmful to both the environment and the health of individuals.

PCV Valve Malfunction, common in my model year.

My Mercedes has a P052E check engine light code for its PCV value performance. I do see that many other drivers are having this issue and that repairs are around $2,000.

There is a gas smell pervasive in the driving compartment of the car. My mechanic identified a recall campaign for almost every other 2016 C 300 class vehicle. For some reason, my “platform quote number is not listed, but the problem is exactly the same as described in campaign description number. 21P2197456 released on December 17, 2021.

The contact owns a 2016 Mercedes-Benz C300W. The contact stated that when the vehicle was started, the power steering warning light illuminated and the power steering seized. The vehicle was not diagnosed or repaired by an independent mechanic or dealer. The manufacturer was not made aware of the failure. The failure mileage was unknown.

Electronic power steering failed. The electronic power steering on this vehicle has failed several times, making it almost impossible to steer. When this occurs, steering requires a tremendous amount of force and puts the vehicle and driver at enormous risk of an accident.

Check engine light P052E crankcase vent valve thousands of same model have this problem should be recall

I recently received a CEL code P052e positive crankcase ventilation valve. Common problem seen in multiple forums.

PCV valve

M274 check engine light P052E71 Crankcase ventilation valve Topic: # LI 01.20-P-076794 crankcase ventilation cylinder head cover WIS-references document # AR01.20-P-9692MRU remove/install oil separator on crankcase.

Electric power steering lost power and failed while driving on drive way. The steering became very difficult to turn and the car became very hard to control if not impossible. If it had failed while on the road with other cars, especially while turning, the car could be in a crash with serious accident that could have injured me and others. The problem was reproduced by the dealer. The dealer examined the car and steering components and has confirmed that the electric power steering rack failed. There was a recall done (17V243000) some time ago, however, my VIN is not included in the recall. The problem that my car is having is exactly the same as is described in this recall, 17V243000. It seems that more cars are having this same issue.

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

Positive crankcase ventilation regulator valve performance

Crankcase Ventilation Valve Emission Modification -Error P052E71 -Error P06DA00

I took my car for service "B" at the dealership. They told me the rear subframe is rusting and there is a hole forming already. Apparently, this is a known problem that Mercedes Benz provided warranty extension up to 20 years with unlimited mileage. However, they stopped at 2015 models. Mine was bought from the same dealership in October 2015, but it is a 2016 model, but actually has the exact same problem earlier models have and they cover with their voluntary extended warranty. I am told to replace it, it will cost at least $4600. They are refusing to cover it under warranty because I my car is at around 60,000. The car did not even reach 100K and well maintained, but has rusted frame already that can be a serious safety hazard according to Mercedes Benz associate.

Error code PO52e crankcase ventilation

The contact owns a 2016 Mercedes-Benz C300. The contact stated that the adhesive bonding on the front panel of the sunroof had failed, and the panel detached from the vehicle and the sunroof could no longer be opened. The cause of the failure was not yet determined, and the vehicle was not repaired. The manufacturer was contacted and informed the contact that the VIN was not included in NHTSA Campaign Number: 21V197000 (Structure). The contact stated that the vehicle had experienced the failure listed in the recall. The local dealer was not contacted. The failure mileage was 52,000.

When starting car you can smell gasoline the smell stays while driving

Power Train System - P052E Positive Crankcase Ventilation Regulator Valve Indicates a fault in the Positive Crankcase Ventilation Regulator Valve. I repaired my car for the same issue in 2019 January and it failed again in 2024 January. It costs $2000 to repair and it has a warranty of two. It failed after 3 years. Same issue is occurring in Mercedes C300 and GLC 300 and multiple times. But company isnt taking any responsibility to fix the issue or at least extend the warranty. 1. Incident 1 - Jan 2019, Miles 28k 2. Incident 2 - Jan 2024, Miles 61k