2009 Mercedes-Benz C-Class Complaint Log

The contact owns a 2009 Mercedes-Benz C300. The contact stated that while starting the vehicle, the check engine, seat belt, and air bag warning lights illuminated. Additionally, the headlights and navigation lights failed to activate for a while. There was burning odor inside the vehicle with the heat activated or turned off. The contact also stated the vehicle failed to start for three days before eventually being able to start. The contact attempted to charge the battery, which resulted in a visible spark. The vehicle was taken to a dealer where it was diagnosed with a sound module and the Signal Acquisition Module (SAM) failures. The vehicle was not repaired. The manufacturer was notified of the failure. The failure mileage was 217,000.

Vehicle inspection by independent service center indicated that a new rear frame was necessary. This was the second communication to nhtsa on this issue. This automobile (2009 c300) is inoperable due to this Mercedes rear frame defect .

The problem is that the steering wheel locking mechanism has failed. The vehicle could not be started or driven. It required a flatbed tow to an authorized Mercedes repair facility. It was diagnosed as the steering mechanism, requiring replacement. The cost for this repair is $1400.00. I researched this problem on the MB website and it stated that this issue was common. I feel that this is a safety issue and should be repaired free of charge or at a significant discount. The car is currently being repaired, and I can forward any relevant documentation to you once the repair is complete.

Vehicle has lost its ability to be driven. Car alarm has gone of a multitude of times at different hours of day and night. Finally we were told that the steering column needs to be replaced. According to tow truck driver, Auto lock person, this is common from the 300 series of Mercedes Benz. Obviously very costly. My car is worthless at this point. I believe that the Mercedes Benz should have a recall on the steering column lock. Obviously, this is not only a defect but, also causing safety issues with it just turning off and not able to restart.

While driving the car on [XXX] at 9pm on sunday, [XXX] in lane two during a heavy rain a audible clicking noise came from the drivers side front of the dash instrument cluster area and all of the lights on the car simultaneously turned off without ever touching the light switch i was unable to see the road in front of the vehicle also the windshield wipers quit working and the radio and navigation display went off and closed and opened and closed( turned off and then on and off again) the instrument cluster went dark as well, luckily i was able to turn the steering and apply the brakes and steer the vehicle onto the shoulder of the road and come to a complete stop after several attempts to turn the headlights back on i determined that the vehicle was not safe to drive , and had the vehicle towed to a reputable mechanic, and upon diagnosis he contacted me and stated that the drivers side front signal acquisition module A. K. A. the (sam) module had failed due to water intrusion into the fuse panel sam module area , the mechanic stated that i should file an incident /complaint form with your office , upon searching the MERCEDES BENZ forums and sites on the www i found many customers with a broad range of models (w204)approximately this same year model have identical complaints and nothing has been done by MB usa to remedy the problem, i believe this matter to be a major safety concern and i am wondering why this matter hasnt been taken into consideration by your agency and by MB usa as a safety recall to replace the failing modules and retrofit the fuse panel sam module area to prevent water intrusion thats causing the obvious safety concern and possible liability on the part of the MB/ DAIMLER corporation. it seems this is clearly a problem and it needs fixed we are terrified to drive the vehicle for fear of a repeat incident. Sincerely the [XXX] family INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Check Right Tail and Brake Lamps warning light will not go off for months. They are working fine but the light won't go off. Googling on MB World, it shows Mercedes is aware of this problem and a recall is needed to get it corrected being safety issue with warning lights not working properly. See all info. below from owners, conversations and work done by dealers, etc. People note it is a middle school education problem. Please alert me when the recall is confirmed to get this important problem fixed. [XXX] Thank you, [XXX] [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Went to the Mercedes dealership service department to replace the rear subframe that suddenly broke while I was driving due to extreme rust/corrosion. The dealership stated that it was being covered under the extended warranty due to the recall related to the rust/corrosion issue with the subframe. I was advised by the mechanic that the brake lines will need to be replaced due to extreme rust/corrosion in the rear at the same exact location of the rear subframe, making the vehicle very dangerous to drive because the brake lines could break at any moment and cause sudden brake failure. I was quoted a very significant amount to replace the rusted brake lines and per the dealership, it will not be covered under any extended warranty and/or recall.

The contact owns a 2009 Mercedes-Benz C300. The contact stated that while driving at various speeds, the rear end of the vehicle would fishtail and become extremely unstable while driving over a bump in the road or while turning. Upon inspection, the contact discovered that the subframe was severely rusted. The cause of the failure was not determined, and the vehicle was not yet repaired. The local dealer was notified of the failure. The manufacturer was not contacted. The failure mileage was 201,000.

I drove my car to get lunch. Came back out to go back to work and the car would not start. Would not even turn over. My Radio did not turn on and I couldn't even roll my windows back up. Luckily they were only cracked open a small amount. My steering wheel cannot be turned, it's locked in it's current position. I am told the ESL (Electronic Steering Lock) and possibly the EIS is the cause of this problem. The display on the dash says "Take your key from ignition" and that is all I get. Had to have my car towed and now I have a dead car with the windows partially open that I cannot close.

Headlight harness on drivers and passenger side is melting and my lights are flickering. I was advised to night drive my vehicle at night, because it could start an electrical fire. This is caused by heat from the lights.

The entire rear subframe of any W205 body model including but not limited to the C class from 2009-2014, CL class, SL, class ETC. suffers admittedly from MB USA, premature rust, deterioration etc. there is an active recall for these same models in Canada and all of Europe but not the USA. My garage kept 2009 C300 has suffered extensive rear end damage from a factory defect that Mercedes refuses to recognize in the Continental U.S. but will admit the same issues occurred in the EU and Canada. Keeler Mercedes, USA, of Colonie New York, stated they completed my subframe repair under the MB rear subframe extended warranty. The vehicle was driven home and inspected only to find out Keeler Mercedes of NY did NOT replace this crucial safety component under MB-USA extended warranty issued for this defect. This is pure negligence. When asked why the subframe wasn’t replaced as the work order stated it did, they stated “a mix up in paper work” I believe Mercedes-Benz USA and Keeler Mercedes of New York conspired together to push this massive safety defect aside and lie about completing the work in fear of the payment from warranty not being worth the labor hours required by the technicians. This oversight COULD have been a multi million dollar lawsuit if any injury was sustained after said repairs were done in belief the vehicle was safe to drive. Keeler Mercedes’ has also had this vehicle in their possession from June 14th 2024, to todays date, July 5th 2024 with no word on when repairs to subframe will be completed. Subframe replacement stated on MB website states it is an 8 hour labor job. We’re on day 18 now. MAJOR safety issue and shady dealing by dealership

The contact owns a 2009 Mercedes-Benz C300. The contact stated that while driving at an undisclosed speed, the "SRS System Requires Service" was displayed. The air bag and check engine warning lights were illuminated. The vehicle was taken to the dealer, who diagnosed a failure with the vapor canister shutoff valve but had not provided a diagnosis for the SRS system. The vehicle was repaired. The manufacturer was notified of the failure, and a case was opened. The failure mileage was 99,000.

After noticing brake fluid leaking I took my car to a local automotive shop and when he raised it to checkout the break line when he found the leak from the rust . he noticed a more serious problem that the subframe was rusted out on each side. He told me to contact Mercedes immediately because the car is unsafe to drive.

Last week just before Thanksgiving my car of 134,000 miles wouldn't start. Had it towed to my mechanic only to find out like so many others that the Electronic Steering Module(ESL) is 1,500.00 defective. Yet with this being a common issue there is no recall. guess I'm going to a Toyota.

As I was driving from work, I noticed that when I started using the brakes I starting hearing a metal sound coming from the back, the day after I looked down and realized a whole part from the sub frame was completely broken and the part is corroded.

The caption and case number is Sowa et al v. Mercedes-Benz USA, LLC et al., [XXX] MBUSA has extended the warranty on the rear subframe of several vehicles. The link to this in on your website: [XXX] One the last page of the PDF file on your website it states: When will customer letters be mailed for this warranty extension? The warranty extension customer notifications are scheduled for mailing on: March 10, 2023, and continue in waves through May 19. We have three cars in my family that are in this "extended warranty" at three different households. No letter was received at any of the three households regarding any of the three cars. If you look up the three cars Vin #'s, all three have no recalls on them and nothing relating to an extended warranty on a rear subframe. So, MBUSA, has brilliantly side stepped issuing a recall which would come up on a Vin $ search. They have not sent out the letters of notification. So, almost all owners will not be aware of the deadly impending time bomb they are driving. As these cars age further the ones that have yet to fail will fail and people will die. I called today, 10/24/2023 Reference # for the call [XXX] to let the NHTSA know the above and that if you allowed MBUSA to NOT issue a recall because they agreed to send letters of notification - well they did not do that and people are at risk. This seems like a loophole to me. No recall, we will extend the warranty and then not let anyone know much lower cost than recall and fixing. The NHTSA - should get the contact information for all the customers affected and hire a third party to send the notices and have MBUSA billed for that service. This would ensure people are notified. I was advised by the NHTSA staff on my call to file a claim with the BBB. That seems ridiculous. I will keep a copy of this filing; so, I can send it to the news channels to show how the NHTSA given due notice did nothing. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Total shutdown of complete system…brakes, steering and engine at around 25-to 30 MPH. No warning. Happened two times…once before M-B service and once after service for problem. It checked out OK from dealership months before only to have it happen again. Was lucky to avoid a crash both times. Sold to dealership. Wrote my safety concerns for a new owner to local dealership and corporate.

The contact owns a 2009 Mercedes-Benz C300. The contact stated that the coolant warning light was frequently illuminated due to low coolant. The vehicle was taken to an independent mechanic where the engine hose and other engine parts were replaced. Despite the repair, the coolant light returned soon after the initial repair. The contact then took the vehicle to a dealer where the failure was linked to NHTSA Campaign Number: 22V168000 (Exterior Lighting, Electronic Stability Control, Engine and Engine Cooling); however, the VIN was not included in the recall. The manufacturer was not notified of the failure. The vehicle was not repaired. The failure mileage was unknown.

The contact owns a 2009 Mercedes-Benz C300. The contact stated while driving at an undisclosed speed, she became aware that the coolant level was low. The contact added coolant to the reservoir. The contact stated that the coolant reservoir burst open. The vehicle was towed to an independent mechanic who replaced the coolant and hose. The vehicle was taken to the local dealer but was not diagnosed or repaired. The vehicle was repaired, but the failure recurred. Additionally, the indicator lights became inoperable. The check engine warning light was illuminated. The contact stated the failure was associated with NHTSA Campaign Number: 22V168000 (Exterior Lighting, Electronic Stability Control, Engine and Engine Cooling). The manufacturer was contacted, but no assistance was provided. The failure mileage was unknown.

i was driving in the highway 50 mph and i was braking and my car slipped in the other line of the highway and almost had and accident !!!! and cars switched off when driving almost had incident!!!! i saw that many people have the say problem like me about rusted component please do something because people are losing their lifes.

While driving and when parked the headlights flicker on and off. I have no headlights while driving at night, during adverse weather conditions and during dawn hours. I could crash into other drivers, or they could crash into me because they can’t see me. When a parking bulb blows it fuses and melts everything together causing the replacement of the entire headlight unit, this has happened twice.

The contact owns a 2009 Mercedes-Benz C300. The contact stated while driving approximately 65 MPH, the instrument cluster started flickering and the vehicle stalled. The contact stated that the power steering and brakes were operable. The contact pulled off the highway and shifted the vehicle into park(P). The vehicle failed to restart and was towed to the dealer. The vehicle was not yet diagnosed or repaired. The manufacturer had been informed of the failure. The contact researched online and related the failure to NHTSA Campaign Number: 22V168000 (Exterior Lighting, Electronic Stability Control, Engine and Engine Cooling) however, the VIN was not included. The failure mileage was approximately 119,000.

The contact owns a 2009 Mercedes-Benz C300. The contact stated while driving at various speeds, the vehicle would sway from side to side as an abnormal clonking noise would emit from the vehicle without warning. The vehicle was taken to an independent mechanic where they discovered that the subframe had cracked due to severe corrosion. The dealer was contacted about the failure, and she was given an estimate for the repair. The manufacturer was also notified of the failure and the contact was given a case number. The vehicle had yet to be repaired. The failure mileage was 94,200.

Authorized Mercedes Benz dealership in Ann Arbor, MI advised replacing tires, valve stems and other items. I dropped off the car at the dealership for the work. During Alignment they found right rear out of spec due to subframe rusted out. They said rear subframe replacement is needed. This is a very dangerous condition and Mercedes Benz does not cover rusted subframe replacement costs at all, neither do they advise routine checks for this problem which seems to be a very common issue for the C Class. In Europe and Canada, Mercedes replaces rusted subframes for free. Why is it not done for free in USA? This is a very serious issue and can cause serious and fatal accidents. The cost to replace rusted subframe is very high and car can break down while driving without any notice or warning. Additionally, there is no warning light or signal displayed to alert the driver of a potential problem. The car can have an accident without any warning light or alert.

Rear brake lines corroded leading to loss of brake fluid while on the road. My at the time 4 year old son and I were in the car (I was the driver). This was in December of 2022 so almost two years ago. Earlier that year, MB dealership warned me about rear sub frame being corroded, too, but the cost of repairs ($7,000) were out of reach. There were no warning signs the day brake line started leaking other than a dashboard message to check the brake fluid and I felt I could not really stop my car. Car was taken to a local shop and the rear brake lines were repaired for $1,158. on 12/12/2022. Then this spring 2024 rear sub frame fell apart while switching my winter wheels to all year wheels/tires. MB USA honored this repair through the extended warranty.

I bought this car for my 18 year old son based on Mercedes reputation for safety and longevity, only to discover that Mercedes has a widely acknowledged issue with rotted sub-frames -- it's a serious safety issue and recalled in other countries. My son was was driving on the highway and the tire exploded. He was so close to being killed because the car went out of control. After getting it towed to my mechanic, he advised me that alignment adjusters were stuck, the subframe was rotted, the lower control arm subframe mounts were broken from the subframe and they were hitting the gas tank. Luckily, the tire only exploded as oppose to the entire vehicle bursting in flames. There were no warning lights or messages, only the feeling that the tires needed to be aligned. We bought new tires and were told an alignment was done from Town Fair Tires, which was untrue. My son's life was in immediate danger. Shame on Mercedes for not recalling this subframe. This is the first of many avenues I am taking to have this rectified and hopefully prevent a tragedy

The contact owns a 2009 Mercedes-Benz C300. The contact stated that while her husband was driving at an undisclosed speed, the vehicle swayed on the roadway. The vehicle was taken to an independent mechanic who diagnosed that the rear subframe was corroded and needed to be replaced. The mechanic contacted the dealer to order the replacement part and was informed by the dealer that there was a recall for the subframe; however, the VIN was not included. The vehicle was not repaired. The manufacturer was not made aware of the failure. The failure mileage was approximately 70,000.

Was told by a mechanic that there is a safety recall for sub frames on Mercedes vehicles. After an inspection the mechanic noted that it was suggested to replace due to a recall on the c-class models. After looking up the VIN it suggested that a 2009 does not have a recall - same sub frame issue.

At a recent VA state inspection the mechanic noted that the "rear sub-frame rusted and rear coil springs bottoms are weak." This becomes a potential suspension issue and the sub-frame should not be rusting out so quickly. Additionally, when researching online it seems prohibitively expensive to replace the rear sub-frame but this is a safety concern and I have noted that a large number of these sub-frames are being replaced..

The contact owns a 2009 Mercedes-Benz C300. The contact stated while driving at an unknown speed, several unknown warning lights illuminated. The vehicle was taken to the dealer where it was diagnosed that the connector for the rear taillights was melted into the bulk assembly mount and needed to be replaced. The contact was then informed by the dealer of NHTSA Campaign Number: 14V177000 (Exterior Lighting) however, the dealer confirmed that the recall was previously completed. The vehicle was not repaired. The manufacturer was notified of the failure and the contact was promised a call back however, the contact had not yet received a response. The failure mileage was approximately 93,000.

Steering Wheel locked due to ESL Module's motor failure making the car won't turn on, not drivable. Stuck, stranded.

Rear Subframe gets rusted and breaks is an issue with most of mercedes c300 to the point the part is back order in USA and Germany its a safety issue and there should be a recall for it when I called mercedes benz they told me they get at least 3 to 4 calls a day about that issue and people can't find the part it's a comment issue and it sounds be resolved.

The contact owns a 2009 Mercedes-Benz C300. The contact stated that the vehicle failed to start after several attempts. The vehicle was towed to an independent mechanic where it was diagnosed that the ignition switch and the steering lock had failed and needed to be replaced. The local dealer was notified of the failure and informed the contact that the parts were available. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 175,000.

The stability control is off in the rear. No warning lights or noise. Other models of this same year make and model have been recalled for something having to do with this. Please help me our family can’t afford this rn. We have a beautiful 1 year old that needs rides to dr apt

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.

My spouse was driving approx 40MPH. Traffic light turned amber so she applied the brakes, at that point the vehicle pulled violently to the left into on coming traffic and at the same time the vehicle rear end was fish tailing out of control.Our mechanc inspected the vehicle and discovered the rear sub frame assembly had cracked on the driver side. We were advised by the mechanic this car is un driveable. Our Insurance appraiser inspected the vehicle and stated this is very common with this model vehicle and is a very bad design flaw. I contacted the Mercedes dealership and they advised there is no re-call on the subframe so I would need to pay $4000-$5000 for the repair. This vehicle is worthless to me now and is a grave safety risk to drive. I do not have the funds to fix this vehicle so I am now without a car. Mercedes customer care will not even answer any telephone calls. I have called 3 times and been on hold for over 60 minutes each time. This design flaw needs to be corrected by Mecedes before someone gets killed.

Take my car to the dealer and told me my rear subframe is rusted out and is dangerous to drive. Total cost replace they said around $5800 . Why there isn’t recall for the problem in the USA ? I find out there is one in Canada and Germany for this car. What I’m supposed to do with the car? Take it to a junkyard because Mercedes’

The contact owns a 2009 Mercedes-Benz C300. The contact stated while driving 70 MPH, he heard an abnormal clunking sound coming from the rear of the vehicle. The contact veered to the side of the road. After looking under the vehicle, the contact noticed that the subframe located next to the gas tank was fractured. The vehicle was taken to an independent mechanic where it was diagnosed that the rear subframe had fractured from the weld point. However, the parts to do the repair were not available. The vehicle was not repaired. The dealer was not notified of the failure. The manufacturer was notified of the failure and referred the contact to the dealer. The failure mileage was approximately 190,000.

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

This car I have owned since brand new and I am the original owner. This car has never been used in winter despite I live in New York and always has been maintained in very good condition however, this car has developed noises from the rear when driven. I took the car to my trusted mechanic and he found out that the rear subframe has corrosion making it unsafe to drive.

I noticed my right tail light has completely went out and related damage to the brown wire connected to the entire casing. Per recall campaign: 2014050001; NHTSA RECALL NUMBER: 14V177, "Oxidation on the ground pin connector for the rear tail lamps of subject vehicles can result in a dimming of the tail lights or loss of tail lamp functions. The loss of a rear tail lamp reduces the rearward visibility of subject vehicles, especially with respect to turn signal illumination and may increase the likelihood of a rear end crash". I recently called a new certified Mercedes Benz dealership near me who states this recall has been closed, however, there is no specific indication on whether that was the right or left tail light. Regardless, a recall covers both whether it happens simultaneously or at different increments. My requested resolution: to simply acknowledge the recall to replace this time the right tail lamp. Especially since any wiring issues poses risk of shortage or fire.

The contact's son owns a 2009 Mercedes-Benz C300. The contact stated upon taking the vehicle to the dealer for servicing, he was informed that the subframe was severely rusted. The contact stated that his son then informed him that while he was driving approximately 50 MPH and depressing the brake pedal to come to a complete stop, the vehicle started wobbling significantly. The dealer replaced the subframe, the rear tires, and completed an alignment on the vehicle. The vehicle was repaired. The manufacturer was notified of the failure and referred the contact to the NHTSA. The failure mileage was approximately 87,000. Vehicle has been repaired.

My 2009 Mercedes Benz C300 4 Matic sedan fishtails at the rear end when I apply the brakes. I’ve owned the car for 8 years. Prior to this happening, I took it to the Mercedes Benz Dealership Repair shop, it was fully inspected on a hoist and fully gone through from bumper to bumper. May 6, 2021, I have a report and a video of the inspection but nothing was revealed related to the undercarriage suspension subframe rusting. Just a few days ago, I had rear brake work done thinking this was the problem and would solve the fishtailing when brakes were applied, maybe one of the calipers was sticking. I also had a 4 wheel alignment, however to my surprise the problem worsened. I called a Local mechanic, who offered to look under my car. After inspection of my vehicle it revealed that the rear undercarriage subframe is completely rotted out. I was advised that it is completely unsafe to drive and to immediately get rid out it to a local salvage yard. My Dream Mercedes still looks new on the outside as I have taken miraculous care of it over the years. Be aware everything that looks good on the outside can be rotted out on the inside. I live in a city that requires highway driving at 70 mph plus, this problem could have ended in a disastrous deadly way. Thank goodness my guardian angel was looking out for me. I checked into repairing the vehicle, the rear subframe is available and with labor the total cost of repair is well over $5000.00 with labor costing $1632.00 before tax alone. Mercedes knows this is a common problem and should recall these issues before someone gets seriously injured or killed.

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.

the rear subframe @lower control arms right side rust on bracket when put break on the car go to right and make noise!!! the car just have 83.000 miles!! this have re call or not?we d'ont know untill seaching on web side findown couple owner C300 have problem said some

Rear subframe corrosion discovered by Mercedes Benz Service.105,000 miles on the vehicle. Presents a safety hazard, possible loss of control the vehicle. Frames rots from the inside out, which leads to discovery after vehicle performance and safety is compromised.

Front Right SRS Malfunction Service Required

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.

2009 C300 at 120k miles car won’t start. Dashboard indicates “remove key from ignition” key was not in ignition, had car towed to the dealership, they said car needs a new steering lock and ignition switch due to malfunction. Total cost $1923. Thankfully car was not in motion when this happened. Please do a recall on steering lock and ignition switch for the safety of everyone!!!!