general problems of the 2008 Mercedes Benz C300 - part 1

125 problems related to electrical system have been reported for the 2008 Mercedes Benz C300. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2008 Mercedes Benz C300 based on all problems reported for the 2008 C300.

1 Electrical System problem

Failure Date: 04/08/2025

The contact owns a 2008 mercedes-benz C300. The contact stated while driving at an undisclosed speed, the steering wheel failed to turn in the intended direction. The contact stated that a message to remove the ignition key was displayed. The vehicle was driven to the residence. The contact stated that later while starting the vehicle the vehicle failed to start as intended. In addition, the contact stated the steering wheel had seized. The contact inspected the battery and determined there was no failure with the battery. The vehicle was taken to the dealer; however, the vehicle was not diagnosed. The contact was requested to pay a diagnostic fee and declined. The vehicle was not diagnosed or repaired by an independent mechanic or the dealer. The manufacturer was made aware of the failure but provided no assistance. The contact was advised to take the vehicle to the dealer for a diagnostic test. The failure mileage was approximately 90,000.

2 Electrical System problem

Failure Date: 03/01/2025

The contact owns a 2008 mercedes-benz C300. The contact stated that upon turning off the vehicle, there was an abnormal clicking sound coming from the vehicle. There was no warning light illuminated. The contact stated that the following day, the vehicle failed to start after several attempts and required a jumpstart. The contact replaced the battery; however, the failure persisted. The contact disconnected the battery to prevent the battery from draining. The dealer and the manufacturer were not yet notified of the failure. The vehicle was not repaired. The failure mileage was approximately 200,000.

3 Electrical System problem

Failure Date: 09/17/2024

Camshaft adjuster solenoid leaked oil into wiring harness, caused vehicle to go into limp mode and not accelerate/shift gears. This is a known problem with the m272 engine, this VIN did not show up on the recall list.

4 Electrical System problem

Failure Date: 11/07/2023

Car worked fine, all the sudden it wouldn't turn over, I would put the key in and turn it and nothing would happen, I was stuck and had to catch a ride, lucky that I was able, a car company that is supposedly reliable shouldn't allow there cars to completely give out on people during the middle of winter storms and not take ownership, when the customer has taken good care of the car. Talked to several mechanics and turned out it was the electronic steering lock (esl) module that had malfunctioned probably due to the software and electrical. Due to this only the benz dealerships can repair, I had to tow it to a dealership and was charged around $2000 after haggling over the price. Terrible experience and should be recalled by mb, I have seen many complaints about this online and was very disappointed there wasn't a cheaper solution. Was both a safety issue, inconvenient and very costly.

5 Electrical System problem

Failure Date: 04/03/2023

Car has been in and out of the shop. Initially I have been contacting mercedes about airbag messages and continued message of srs malfunction on dashboard. Airbags had been recalled and supposedly replaced on multiple occasions. This srs continues to remain even after repair or being seen for this issue only for other components to have failed and me having to pay for those in the process. The srs malfunction remains an issue until the next issue is affected. Recently an entire electronic sam module component was replaced as the culprit only to have more issues and the srs remained. Mercedes has contended that each time they saw the vehicle the the srs malfunction was not the problems while other documents were repaired such as battery and sam. In the meantime since then the car has stalled, components that were working are no longer inoperable. There was a recall that was applied to only specific vehicles of my model year which state the srs malfunction was to be replaced and made whole. I never received one of those notices and I will note that my vehicle obviously was affected and should also have this component replaced as it fits the same model year and make of the issues mercedes has repaired already on affected vehicles. This issue has been on going for several years and mercedes has failed to rectify this component that makes it dangerous and causes safety concerns for us with the understanding that their note on their website about the srs malfunction appeared to me a cop out for them to not be responsible for the fix and recall thsr may have affected more vehicles than its originally accessed number. Instead of fixing this issue they continually find other repairs they indicate as the issue only to end up right back with the same srs malfunction and stalling issues with vehicle once again and want to use excuse of car's age as issue and failing to acknowledge and address the srs malfunction. Your system would not allow file upload. I can still provide.

6 Electrical System problem

Failure Date: 03/13/2023

The contact owns a 2008 mercedes-benz C300. The contact stated that while driving at an undisclosed speed, the vehicle lost motive power. The contact stated an unknown warning light illuminated. The contact stated she was able to restart the vehicle and drove the vehicle a short distance and the vehicle lost motive power again. The vehicle was towed to the contact's residence. The contact stated while the vehicle was sitting in the driveway, the vehicle independently started and accelerated. The contact stated that the battery terminals had to be disconnected. The vehicle was towed to the dealer where it was diagnosed with failed wire harness and the wire harness needed to be replaced. The vehicle was not repaired. The manufacturer was made aware of the failure but provided no assistance. The failure mileage was approximately 171,846.

7 Electrical System problem

Failure Date: 06/19/2022

Pulled into parking space on side of street and turned off vehicle to pick up restaurant food. Returned to vehicle within 5 minutes, turned the key, and vehicle was dead. 93 year old mother was in car which was now stuck in parking space. We had to open the doors, due to vehicle windows not functioning, to try to prevent inside of car from overheating due to outside temperature. Called aaa, who arrived after about 45 minutes, tried to jump start car, indicated appeared battery was fine. Had to re-contact aaa to get car towed. Waited another 45 minutes for tow truck to arrive. Again checked battery and ignition, battery fine, car was locked in park and steering wheel was locked,. Towing technician had to lift up center console to reach underneath to switch to neutral. Technician had great difficulty getting car onto flatbed of tow truck because it kept slipping back into park. Adding to the difficulty was the location of the car in the parking space on the side of a busy street. Car was towed from newport, ri to tiverton, ri to viti mercedes dealer, who confirmed the problem. There were no warning lamps, messages or other symptoms of the problem prior to the failure. The final bill to repair this issue was $2,214. 15. Upon review of other incidents that occurred with this make, model and year, there have been a myriad of accounts of this same issue going back many years. Based on the numerous incidents of this type and the potential safety devastation this could have caused, the $2,214. 15 paid for repair in addition to $55 for towing should be reimbursed. This is a major safety issue that could be detrimental to the driver, occupants, towing company and other people around the disabled vehicle.

8 Electrical System problem

Failure Date: 03/08/2022

Both headlights wiring harnesses (right and left ) wiring has melted and all wiring is now exposed and touching and causing all light bulbs ( headlights-tail lights-turn signals-brake lights-ect) to be shortage out due to the original wiring not being constructed to resist the heat from the engine and environment. We had mb of maidland,FL and elite motors of ococee,FL to view this issue with the only fix is out-of-pocket repair in the thousands of dollars. I have a neighbor with a mb experiencing similar problems.

9 Electrical System problem

Failure Date: 03/25/2021

I took my car to the mercedes dealership for an alignment. It is a 2008 C300 series. After they called and said it was done they said that the esl mechanism locked up in the car and completely failed. To this point I have never had an issue with this car, and I have never had it fail. Now they are telling me that it just happens to be one of the worst parts that they have to repair notoriously in these cars. So I called two other dealerships of the same build two other mercedes dealerships told me the same thing. I looked up in the blog system and found in the national safety records that numerous people have had the same complaint and they have all been filed. Why are we not starting a recall on this because to get my car back what was supposed to be $167 is now 1,267. 00 this is quite a jump for a car I have never had this issue with. They insisted that there is nothing that can be done to repair it and as likely as it is it was bound to happen at any time. So my complaint is what do I need to do to start a recall on this item. I have a hard time with all of the same parts going bad and dealership parties also telling us these are bad parts but I recall has not been initiated. But other ancillary issues have been recalled that are little to no importance however this one at any given moment can lock up your steering wheel and could potential he cause an accident. Is what two dealerships told me of course the one that I am getting repaired would not admit that. Please help us get a recall on this we are at your mercy for the safety of our families driving a mercedes-benz car.

10 Electrical System problem

Failure Date: 12/01/2020

Tl- the contact owns a 2008 Mercedes Benz C300. The contact stated while driving 45 mph, when "the rear passenger brake and signal was failure" warning light was illuminated. The vehicle was taken to independent mechanic and had the rear passenger lights plugs was replaced. The contact stated a week later the rear passenger lights plugs was melted again. The vehicle was not diagnosed or repaired as of yet. A dealer was not contacted. Upon investigation, the contact associated the failure with NHTSA campaign number: 14v177000 (exterior lighting), however the VIN was not included. The manufacturer had been informed of the failure. The failure mileage was approximately 212,000. Dp.

11 Electrical System problem

Failure Date: 09/24/2020

Noticed a recall for this part.

12 Electrical System problem

Failure Date: 04/10/2020

My 2008 C300 had the right tail break light + rear right turn signal light error message these few days, I replace the light bulbs which did not fix the problem then I found the brown wire at connector melt badly, I google this issue on the web and found all 2008/2009 mercedez c class has the same issue, can we get a recall to fix it on this ?.

13 Electrical System problem

Failure Date: 04/01/2020

Took car in for airbag recall, week later the car wont unlock, had to pay $50 to get in, was told battery had 12. 4 amps, car wont turn over, electronic systems not engaging, alarm goes off, replaced battery $160checked fuses and bought $25, nothing now having to tow back to Mercedes Benz of chandler that did my "recalls" out of pocket. The recall service messed it up. The exact thing as in complaint 212.

14 Electrical System problem

Failure Date: 12/26/2019

I have a mb C300 2008 the car never had an issue until I brought it in for a airbag recall 2 weeks later I get an srs malfunction, esp and abs failure car doesn't turn on next day the car turns on and engine light goes on, then lights stayed on even after car was off next day lights went off while driving in dark making for hazardous and quite scary situation mb is doing these recalls but jeopardizing the overall integrity of car I even replaced battery but this still occurred car was rendered undrivable and stuck in my driveway and had to have it towed and pay $380 just to look at it even though I told them they caused damage there is no way a perfectly running car coincidentally has major electrical issues post recall (they replaced entire stash board and steering wheel cover).

15 Electrical System problem

Failure Date: 11/09/2018

The els went out . Which I've been told is a very common problem with these cars because of the design of the els.

16 Electrical System problem

Failure Date: 10/09/2018

Takata recall headlights flickering when car is off also headlight randomly go off while driving on highway etc and when lights stay on it drains the car battery.

17 Electrical System problem

Failure Date: 09/18/2018

Transfer case reseal. I have a 2008 C300 I bought with 56k miles on it, I had to have the wheel bearings replaced immediately. When this service took place, I was informed that I need to have my transfer case resealed and the cam shaft magnets replaced. This car has such low miles on it. I do not understand how this is needed at this time. I have seen on many boards, this is a common problem. Why hasn't mb recalled this yet? it appears the 2008 model is plagued with problems as I have had to replace the steering lock as well as it failed. Again, common problem and not recall. I now have a seatbelt sensor that faulty. All of this before I have even hit 100k. My 2001 ml is well over 200k and I have never had these issues with the ml.

18 Electrical System problem

Failure Date: 07/17/2018

Takata recall car is completely locked up says remove key from ignition, left me stranded seems to be a common issue with this vehicle failure with steering lock and esl.

19 Electrical System problem

Failure Date: 05/02/2018

Takata recall my airbag is not working, and my lighting has a problem . My back light stay on all of the time even when the car is off . I just bought the car 3 weeks ago and I just realized that.

20 Electrical System problem

Failure Date: 03/27/2018

Takata recall , eis , esl seized up and car won't start anymore , common problem with this car and repair is costly should be recalled since it's a manufactured defect and not caused by the user, this problem can leave anyone stranded in the worst of situations and it can seize up while vehicle is in motion causing accidents and danger to the driver and passenger.

21 Electrical System problem

Failure Date: 01/01/2018

The tail left bulb mount carrier part number 204-820-15-00-64, one of the terminal in the back, is corroded. Also, one of the cable is burnt. In short, the tail lamp doesn’t work. It is a hazard problem since it affects the brake signaling, turning signaling and all other tail lamps signaling. For many years, I have read many incidents like this reported from owners like me and mercedes has done nothing. I cannot use the vehicle in this condition because it is is a safety hazard.

22 Electrical System problem

Failure Date: 12/11/2017

Drivers side rear taillight issues; brown ground wire shorted out and melted connector plug and shorted out lamp assembly .

23 Electrical System problem

Failure Date: 11/04/2017

Takata recall. This takata recall might be making it difficult to resell my vehicle.

24 Electrical System problem

Failure Date: 07/26/2017

My mercedes was running good all day then when I went to the mall and came back back to start my car it had no power. We try jumping the car nothing. Use a different key nothing. . It won't start I had to call a tow truck . I took it to mercedes dealer just to look at it $300 . . Now they say it's the key ingotion that needs to replace cost me $1200+. . I just bought the car 7 months ago I have no warrant. . I google the problem and it's a common problem that ppl have plz investigate this problem cuz it cost a lot of money to fix and I'm out of a car for a week . Thank you.

25 Electrical System problem

Failure Date: 06/04/2017

Comand unit went out along with stereo functions driver seat control went out.

26 Electrical System problem

Failure Date: 05/06/2017

Vehicle parked and locked. When I attempted to unlock vehicle with remote control, vehicle would not unlock. Door had to be opened manually with "key". When attempting to start vehicle, no warning lights went on in position 2 and car woud not start in position 3. Towing company was called. Was unable to start vehicle. Vehicle towed to mbz dealer. Dealer confirmed that the electronic ignition steering lock malfunctioned and required replacement. Replacement completed.

27 Electrical System problem

Failure Date: 05/02/2017

The steering wheel locks up and will not move. Dealership and web state this is a common problem with this model of the car and the eis and esl switches need to be removed and replaced.

28 Electrical System problem

Failure Date: 04/10/2017

The contact owns a 2008 mercedes-benz C300. While attempting to start the vehicle, it was discovered that the vehicle was completely inoperable and disabled. The vehicle was towed to the dealer where it was diagnosed that the electronic identification system was faulty. The vehicle was not repaired. The manufacturer was notified of the failure. The failure mileage was 101,000.

29 Electrical System problem

Failure Date: 03/03/2017

Last week I drove my daughter to school. Then I went to the gas station and turned the car off. When I tried to start the car to leave, it would not start. It did not do anything. I could not even roll the windows up. The car did nothing other than say "remove ignition key. " the battery was tested and fine. It had just been replaced 1 month ago. The tow truck driver brought it to my mechanic who then said it had to be brought to the dealer. The mercedes dealer said it was the eis/steering switch. The cost will be $1900. I've called other mechanics. No-one can fix it because mercedes has the parts and coding exclusively. This is a lot of money and with the amount of complaints it should be a recall. Last year my car also experienced the srs light malfunction. I brought it to the dealer and this was also another huge expense. The dealer did not take the responsibility of a recall. They acted like it was a big surprise.

30 Electrical System problem

Failure Date: 02/26/2017

Start failure and locked steering wheel.

31 Electrical System problem

Failure Date: 02/18/2017

The contact owns a 2008 mercedes-benz C300. The contact stated that the vehicle started and shut off while in park. The failure did not occur while driving. The contact also smelled a fuel odor. The dealer was unable to duplicate the failure. The VIN was unknown. The failure mileage was 80,000.

32 Electrical System problem

Failure Date: 01/28/2017

Eis failure. Vehicle has 136,000 miles. Inserted key into ignition and tried to start the vehicle. Nothing happened, no start. Transmission stuck in park. Tried jump starting, replaced battery even though it tested o. K. But was old enough to make me question it's viability, checked fuses, etc. Online research shows that eis failure is a fairly common issue with mb products, particularly the c class. This is not an owner reparable item. Will have to have the vehicle towed to a dealership and repaired there at the usual inflated cost of doing so.

33 Electrical System problem

Failure Date: 12/17/2016

Ordinary day at my job, got off and went to my car and put the key in lights in the instrument cluster came on and message was " remove the key" turn the key to accessory nothing happens, turn it all the way to start the ignition nothing happens, the vehicle is stuck in park and there is no way to move the shifter. After a research online and few phone calls I found out that this is a very common problem among mercedes vehicles. I took it to the dealer they did diagnose it for steering wheel lock and quoted me $1,300 for repairs. I do believe this should be a recall or at lease mercedes-benz of USA take it's part and reimburse the parts since it's a very common problem. I'm not happy at all of the way they deal with this problem.

34 Electrical System problem

Failure Date: 11/28/2016

An hour after parking the vehicle, I was unable to start it back up. Had it towed to the dealer and diagnosed with eis/esl failure, at a cost of $1700 to replace. Mercedes disavowed all knowledge of this being a common issue, despite hundreds of online complaints to the contrary. All signs point to this being due to a cheap/faulty part at manufacture, which can fail at any time, leaving drivers stranded in potentially unsafe areas or on the side of the road. Car has 75000 miles and exemplary service record.

35 Electrical System problem

Failure Date: 11/21/2016

When replacing a headlight bulb I noticed the h7 wire was completely exposed with no insulation, as I tried to wrapped them in electrical tape to get a temporary fix, the little insulation still left on the cable crumbled. I encourage to check the cable insulation on your vehicle as this can cause a shortage and fail headlights.



C300 Service Bulletins
C300 Safety Recalls
C300 Defect Investigations