Service Brakes Problems of Mercedes Benz C300 - part 2

Completely rotted & rusted sub-frame. Caused braking/stability/steering issues and was completely undriveable. Cost $2300 to fix, another $1000 for car rental as well as lost time at work. There have also been many reports of this problem with other drivers of the same model of vehicle. No warning lamps or messages whatsoever, only knew the level of damage once I brought it into auto shop.

See all problems of the 2014 Mercedes Benz C300 🔎.

While my car was being inspected at the mercedes dealer from who I purchased the car, I was informed that the rear subframe was rusting out, needed to be replaced immediately (at the cost of $4250) as it is unsafe to drive and that the result could be catastrophic if I continued to drive it. They explained that they are having this problem with other C300 models in the us, canada and germany, but there has not been a recall in the USA. They told me that it might be the road salt as this is only happening in the north east. If this were true than I would think other parts of the undercarriage would be rusted or this would occur in other models too. They are well aware of this issue but have neglected to contact owners therefore putting my life and the life of my family at risk. The NHTSA needs to investigate and recall these vehicles immediately before someone is killed. Seems to me they are using sub standard materials and while having knowledge of this issue, should be held accountable. Thank you.

See all problems of the 2013 Mercedes Benz C300 🔎.

Rear subframe of vehicle rusted under regular use conditions and the left trailing arm mount broke off as a result. This caused vehicle braking to become extremely unstable and dangerous, even at low/medium speed. This is a known problem from this manufacturer and the fed government should take action to force recall.

I have a 2016 C300 that was diagnosed with a severe brake booster issue. Last week, I had to brake hard while traveling 65 mph on a highway and they failed; luckily I was able to avoid catastrophe by maneuvering around the obstacle. I researched to see if this was a known issue and learned that some mercedes models between 2008-2012 had recalls due to brake booster corrosion issues, but mercedes might have a worse issue than just a few models prior to 2012, based on my experience!.

See all problems of the 2016 Mercedes Benz C300 🔎.

Crankcase ventillation valve assembly needs replacement.

The rear subframe on the car is completely rusted. I get an oil change and a inspection of the car done at the dealer each year. Nobody mentioned to me that the rear subframe is rusted and is about to crack and fall apart. Was driving home from work when I suddenly had to stop and the whole car shifted to the right almost causing me to crash. Drove home and noticed a noise every time I hit the brakes. The next day took it to a mechanic and he showed me that the subframe cracked and fell apart. I know this is a big issue in europe and the dealers change it free of charge since it is on a recall, but nothing in the USA after several complaints from drivers. Do something about this!.

08/15/2022 (date statement was wrote not date of incident) while driving into work at 50 miles an hour, traffic started to slow. While applying brake heard loud pop and vehicle rear end lounged right making steering difficult, I immediately released the brake and control came back I then gently applied the brake again to slow vehicle and felt slight clump from rear. This was very disconcerting my vehicle never had performed in that manner which made me feel very uncomfortable continuing driving, I had mechanic look at vehicle and was told the rear subframe had rusted and the rear left control arm broke away from frame??? my vehicle is very well maintain and just a little over 11 years old. Feeling belittled I began investing mercedes’ forums and found this has been an issue with some of not all models and nothing has been done to correct this defect. I contacted mercedes’ benz and the service department knew exactly what it was and stated the is no recall on these failing subframe due to rust. This is a very serious safety issue due to the fact of loosing control of the vehicle when this component fails possibly causing serious injury or even death. To put insult to injury mercedes has no plan to replace it and it’s left to the consumer to replace this non maintenance item. Looking into forums about this issue these subframes have failed at almost every odometer mileages, particularly the w204 chassis 2008-2014. A safety recall should be advised to the consumers whom own such vehicles!! safety first!!!!!!!!! respectfully, [xxx] information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).

See all problems of the 2011 Mercedes Benz C300 🔎.

The contact owns a 2009 mercedes-benz m class. The contact received notification of NHTSA campaign number: 22v315000 (service brakes, hydraulic) however, the part to do the recall repair was not yet available. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The dealer was made aware of the issue. The manufacturer was made aware of the issue. The contact had not experienced a failure. VIN tool confirms parts not available.

See all problems of the 2009 Mercedes Benz C300 🔎.

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.

The rear subframe is rusted and broken, alignment is out, and steering wheel is off centered. Given the history of this model car, it has been under recall in multiple countries outside the united states. This is a common and very dangerous issue that needs to be addressed in the united states because if you call any auto shop or mercedes they all say it is a common problem with 2008-2014 c-class models. When you look up this issue with this car it has multiple threads saying that the rear subframe has rusted and broke when it is not supposed to.

K frame and sub frame deteriorates. There is a recall in canada.

When I brake the car makes a clunking noise and I can feel a thumping on the brake pedal as I try and bring the car to a stop. This car is brand new. I have owned it for almost 3 weeks and it has less than 100 miles on it. You can both hear and feel the the clunk/thump as you attempt to brake the car. It seems as if it is coming from the drivers side of the car. I actually heard and felt this issue on may 23, 2022 3 days after I took delivery of the car. But I wasnt sure exactly what I felt. I haven’t devine the car a lot until yesterday due to some medical issues I was having. Yesterday the issue was very bad every time I braked I could hear the clunk noise and feel it on my brake pedal. Contacted dealer and they have no reported issues. Car is going for service today. I am reporting this because it affects the brakes and that could be dangerous if the car is unable to be stopped.

See all problems of the 2022 Mercedes Benz C300 🔎.

I was driving and the brake pedal went to the floor I managed to get the car in the garage and brake fluid leaked all over the floor had the car towed to the dealer inspection show both stainless steel brake lines corroded in the same place leaked out brake fluid end result was 5000 dollar repair bill.

See all problems of the 2008 Mercedes Benz C300 🔎.

The contact owns a 2016 mercedes-benz C300. The contact stated while crossing a pay toll, she was depressing the brake pedal to the floor but the vehicle failed to decelerate and rear ended into a truck. The contact stated no warning light was illuminated. The contact stated no one was injured nor sought medical attention. The contact stated there was no need to call and report the incident, no police report was filed. The contact stated she continue driving to her destination. The contact stated when she stepped out of the vehicle, she noticed the bumper, the grill and the mercedes-benz logo and bracket were fractured. The contact took the vehicle to local dealer, where it was diagnosed with needing the brake pads, the rotors, the bumper, the mercedes-benz logo and bracket to be replaced. The vehicle was repaired. The contact asked the dealer what was the cause of the failure but the dealer did not have a diagnoses for the failure. The manufacturer had not been informed of the failure. The failure mileage was approximately 49,900.

My 2011, 300c has 116,000 miles. Driving the car I notices that when I applied brakes car swayed to the left. Concerned I brought vehicle to mb in paramus, NJ. Was told that rear sub-frame was rusted and dislodged along with the brake lines, also rusted. Car was serviced every 10k miles as recommended by dealer and just now these issues were identified. I recently also was told that the fuel tank was also rusted out and needed to be replaced. These issued were a danger to me and my family and could have resulted in potential deaths. Mb does not have any recalls for these problems but I believe NHTSA should initiate a recall as many others have had these problems. A google search has identifies a large number of people having these same problems. Below are 2 videos of the problem. Https://app. Mykaarma. Com/service-cart/mpi/bfgpb6lkrwayxn3tkqfzqa2mgczxygihmma6ker7cfe/check/your_car_check_id/media/0/view/1 https://api. Mykaarma. Com/video-walkaround/details?inspection_uuid=629e0e431dd41d3dfba54fd1&filetype=video no warnings messages or previous symptoms occurred and even though car was serviced every 10k miles, dealer neve identified any of the concerns. How can that be when brake lines are rusted. Dealer refuses to take any responsibility and mb germany has yet to respond to my various emails. Please review as these issues have life and death implications and a recall should be initiated by NHTSA.

The contact owns a 2013 mercedes-benz C300. The contact stated while his wife was driving approximately 30 mph, she was depressing on the brake pedal and the rear side of the vehicle shifted to the left independently, causing to impact with another vehicle. The contact stated no warning light was illuminated. The air bags did not deploy. The contact stated no one was injured nor sought medical attention. A police report was filed. The vehicle was drivable and the driver was able to continue driving to her destination. The contact took the vehicle to independent mechanic and was informed the subframe was corroded. The vehicle was not repaired. The contact called the local dealer and made them aware of the failure. The vehicle was not repaired. The manufacturer had not been informed of the failure. The failure mileage was approximately 50,000.

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.

From the mechanics notes: four-wheel alignment could not be completed. Attempts to align the rear axle were unsuccessful due to flexing/movement in the rear suspension. A brief road test revealed occasional suspension “clunking” coming from the rear of the vehicle. Close examination of every suspension component mount revealed heavy cracking on the passenger side lower drag link subframe mount (see emailed image). The driver’s side low drag link mount location is also starting to show signs of overstress and rust/flaking. This is a known design defect that has been the subject of a manufacturer’s recall in canada. Given the substantial safety impact of this design defect/failure, it is expected that a us recall will be forthcoming. Proper repair of this failure involves removing the entire rear axle/subframe assembly and either rebuilding/re enforcing the subframe or replacing it with a new unit and transferring all the suspension components to the new subframe. A current check of subframe availability is showing nla (no longer available) status from mercedes wholesale dealers – likely due to recent high demand and inability to satisfy that demand. This supply issue may also be playing a role in mercedes’ failure to address this high level safety issue with a us based recall campaign. The manufacturer may be ramping up production of this component to address anticipated need – waiting to announce a recall when it has sufficient parts on hand to execute the campaign. It is strongly recommended that you file an NHTSA complaint for this issue and limit driving until the problem is rectified either independently or under the auspices of a recall campaign. The passenger side rear drag link has not yet completely separated from the subframe but is likely to do so soon which can result in an accident or loss of control as this critical suspension link is responsible for maintaining steering direction of the right rear wheel.

See all problems of the 2012 Mercedes Benz C300 🔎.

Car was parked in garage with garage door open. Wife and I wanted to go biking and the bikes needed air in the tires. Pre-positioned one bike directly behind parked car and one parallel with the pneumatic air pump prepositioned to inflate the tires. Went to driver's side door and started car with foot on the brake and pushed the button. I then plugged in the adapter for the air pump into the cigarette lighter. The whole time the driver's side door was open and the car was not moving. I exited the car and walked backwards and knelt down abeam the left rear automobile tire to inflate the bike tire. I started the pump at the unit and started to connect the hose to the bike tire, I was then hit from behind by the car door which bent backwards as it passed over me in reverse at low speed. The bike may have saved me by creating a wedge to bend the door back and away from me. The car started down my driveway and dragged the bike parked behind it underneath wedged and sparking across the ground. I got some scrapes but jumped after the car and tried to stop it by trying to slow it with my weight and strength and it was not stopping or slowing. I was worried I may get run over a second time and let it continue to roll at low idle speed across the street and into the neighbor's car that was parked. I am positive the car was not moving after I started it and I didn't have my foot on the brake to engage the reverse function one I exited the vehicle. I believe that the car engaged in reverse once I started the air pump. Maybe it was a voltage or electrical spike. I have used this pump setup many times before to inflate the car's tires and my bike tires but never saw it do this before.

See all problems of the 2015 Mercedes Benz C300 🔎.

While driving normal highway speed and braking suddenly the car violently pulls to left. Same occurs when driving normal city traffic . Good afternoon I am following up on a major safety issue #11453988 concerning a 2013 C300 mercedes. I reported this a few weeks ago as this safety defect can cause personnel injury when the defective part fails . As noted earlier during normal braking the car pulls hard to left or right . With normal highway speed driving and emergency braking the car will violently pull left or right possibility into oncoming traffic and or fixed objects . Please reply with update into this major safety defect concern . Ps the part number in question has been changed from number 2043500141 with new number 2073509702. This part is not available in the us currently and has a lead time of 30 days from germany. With the long lead time and the need to travel to work it is a major safety issue that can be avoided. Thanks george.

I’ve had 2 C300 mercedes models in the past 8 months both used and were driving fine until rain water and car washes caused electrical damage there is a water leaking issue that goes into the floorbeds of the vehicle that causes the car to malfunction.

At only 59,000 miles, the brake lines of my mercedes C300 suddenly developed a significant leak of brake fluid which caused the brake pedal to go all the way to the floor with minimum function. The car was immediately taken to the dealership where the service dept confirmed that all of the brake lines had become corroded and needed to be replaced. . Read more...

Mercedes C300 4matic 2019 model, active brake assist malfunction (not working ).

See all problems of the 2019 Mercedes Benz C300 🔎.

The brake lines and subframe were completely rusted and the vehicle was unsafe to drive. Dealer confirmed at regular service appointment. I have documentation and competed all regular maintenance. Dealer would not cover costs for what appears to be a major defect. I had another shop replace the brake lines and subframe.

The contact owns a 2013 mercedes-benz C300. The contact stated while driving 75 mph, she started to hear an abnormal sound. The contact stated no warning light was illuminated. The contact continued driving to her residence however while depressing the brake pedal the vehicle was pulling to the left. The contact continued driving to her residence. The contact towed the vehicle to the local dealer to be diagnosed. The contact was informed that the driver’s side rear axle and brake line was corroded and needed to be replaced. The vehicle was not yet repaired. The manufacturer had been informed of the failure. The failure mileage was approximately 99,800.

The rear drivers side had a loud chunking/clanking noise while driving and the vehicle was unable to control and break when in motion. Driving was impossible as the breaking component was a total failure and car could not be controlled while traveling down 45-50mph zone. I reduced my speed to 20-25 mph by letting off on the gas to get better control of the car if breaking would need to be suddenly made. I relied on the shoulder to pull off if any sudden breaking was needed. The car was immediately take to be reviewed by a specialized Mercedes Benz mechanic and further inspection proved that the rear subframe on the driver’s (left) side was corroded and broken. The connecting arms are rusted, corroded and rendered the car inoperative. I notified my insurance company as well as car manufacturers corporate office. I researched this issue further and discovered that this reoccurring issue with this make and model. There are a pheletera of recounting of this same issue on various message boards to validate the same issues and callouts I found. The car was taken to the dealership that it was purchased and further inspection showed that the left side subframe/ subframe arms were corroded with rust and broken. The brake lines and fuel tank were equally rusted and corroded. The service manager confirmed that this is defect of the car but it had been part of a recall. I had the car towed for 2nd opinion to another dealership service department to access the car and this callout further validated the corrosion and rust was wide spread and has rendered the car inoperable unless these damages were fixed.

The contact owns a 2009 mercedes-benz C300. The contact stated while driving and activating the turn signals, the taillights were inoperable. Additionally, the contact stated while driving and depressing the brake pedal to come to a stop, the brake lights were significantly dimmed except for the third brake light. The vehicle was taken to the dealer, where it was diagnosed with electrical failure. The vehicle was not repaired. The contact related the failure to NHTSA campaign number: 14v177000 (exterior lighting); however, the VIN was not included. The manufacturer was notified of the failure and informed the contact that they could not assist because the VIN was not included in the recall. The manufacturer referred the contact to the NHTSA hotline for assistance. The failure mileage was unknown.

Stepped on the brakes and the car veered sharply to the right. Vehicle felt very unstable. Would of been horrible if the surface was snow covered or icy. Took into a repair facility and found out the rear subframe has rusted to the point of failure. The rear tire could move several inches. Somebody could be killed or severely injured.

On September 5th around 4:30 pm, I made a complete stop at a red light, on the intersection of sykes creek pkwy and sr 520 in merritt island, florida. Weather was perfect no rain or wind. I applied the brake hold feature and lifted my foot off the brake pad. About 3 minutes passed and suddenly the engine turned on and the car moved and collided with the car in front of me and she hit the car in front of her. It was not hard hit as evidenced by the minor scratch on my front bumper (car #3) and another minor scratch on the car in front of me (car #2), and no sctraches at all on the car in front of her( car #1).

Recurring issue of severe pulsation when braking at highway speeds. Pulsation exacerbated by repeated stopping (red lights) or slowing from high speeds (freeway exit ramps). The problem makes it difficult to maintain proper control of the vehicle and makes it difficult to use mirrors due to shaking. I have driven the vehicle less than 40,000 miles and have needed to replace the rotors twice due to this issue.

Tl-the contact owns a 2010 Mercedes Benz C300. While driving at various speeds the brake pedal was applied but vehicle was unstable. There were no warning lights illuminated. The vehicle was taken to mercedes-benz of louisville 2520 terra crossing blvd, louisville, ky 40245 (502) 565-4410 where diagnosed that the sub frame was rusted, broke , and un drive able but was not repaired. The manufacturer was contacted but did not assist. The failure was mileage was 94,000. Ap.

See all problems of the 2010 Mercedes Benz C300 🔎.

Takara recall.

Excessive brake dust when driven even a few miles. Feel insecure driving in traffic.

When the car is not moving and you are ready to leave the car you press the power button to turn it off, the car "sometimes" goes into neutral not park and starts moving when you are getting ready to exit the vehicle, even knowing that it does have a button for park button on the gear shifter. It should by default go into park not neutral all my other cars that are key less when you press the button to turn the car it off goes by default to park regardless of pressing the park button on the vehicle. I have express this to mb and they don't seam to be concern about this, specialty when we have different vehicles in this household that all of them go into park.

See all problems of the 2017 Mercedes Benz C300 🔎.