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.
Mercedes Benz C300 check engine light comes on
12 of the 1,248 owner complaints about the Mercedes Benz C300 describe check engine light, most of them for the 2008 model year.
- owner complaints
- 12
- worst model year
- 2008
- typical mileage
- 99,000
By model year
Often reported together
Airbag light 4ABS 3Won't start 1Warning lights 1Won't shift 1Steering lock-up 1
What owners say
The contact owns a 2008 Mercedes-Benz C300. The contact stated while driving at an undisclosed speed, the accelerator pedal was depressed; however, the vehicle failed to accelerate as intended. Additionally, the check engine warning light was illuminated. The vehicle was taken to the dealer where it was diagnosed with an intake manifold failure. The contact was informed that the intake manifold needed to be replaced. The vehicle was not repaired. The manufacturer was not made aware of the failure. The failure mileage was approximately 152,151.
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.
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 the federal safety agency 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.
The contact owns a 2009 Mercedes-Benz C300. The contact stated while driving approximately 60-70 mph, the vehicle started shuddering and lost stability. There were no warning lights illuminated. The contact stated that as she disengaged the accelerator pedal, the vehicle stopped shuddering. The vehicle was taken to an independent mechanic who diagnosed that the rear subframe was rusted and had fractured into two pieces on both sides of the vehicle, and the lower control arms were hitting the gas tank. The check engine warning light and TPMS warning light were illuminated at the time of the diagnosis. The manufacturer was not made aware of the failure. The vehicle was not repaired. The approximate failure mileage was 120,000.
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 doesnt 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)
Check engine light came on after vehicle inspection I returned to the dealership. Mercedes benz houston-greenway plaza did cam shaft solenoid work cost $500. Roughly a week later I got stranded at work. I was able to take to get it to start again and took it to repair shop now its $1,346.29 for engine computer work.
Issue with cam gears. Mercedes has know about this issue for many many years. There should be a recall on this issue. Car is unsafe with this problem and costs about $8000 to fix. From the online class action lawsuit from 2013 "the engines are equipped with defective gears in their balance shafts or with defective idle gears. These defective gears wear out prematurely, excessively, and without warning, causing the vehicle to malfunction, the 'check engine light' to remain illuminated, and the vehicle to misfire and/or stop driving."
Tl* the contact owns a 2008 mercedes benz c300. The contact stated that immediately after the vehicle was repaired under the federal safety agency campaign number: 15v711000 (air bags) and while driving at various speeds, the air bag warning light illuminated intermittently. In addition, "right front SRS malfunction" was displayed across the message board. The failure recurred on numerous occasions. The manufacturer was notified of the failure. The failure mileage was 65,000. Updated 07/12/16*lj the vehicle was repaired. However, after the repair, the right front SRS malfunction indicator continued to display across the message board. Updated 07/20/16.
When I've got to the car, put the key in the ignition, and turn the key with no crank noise in the engine. After a lot of tries I had noticed that my steering was not unlocking, windows don't work no lights on like ABS, check engine or all the lights that come on with the key on the on position, and that the car would not shift in neutral. After trying to jump the car and rearming/disarming the alarm I checked on line and found out that a lot of people have the same problem with their mercedes. Here is what I experienced 1.put key into ignition, steering wheel doesn't unlock. 2.instument cluster displays "remove key from ignition". 3.turn key to accessory, no lights on dashboard, only the radio works, windows don't work. 4.turn key all the way to start car, nothing happens.
Related recalls
No recalls on record for this model year.
Questions about the Mercedes Benz C300 check engine light
Why does the check engine light come on in the Mercedes Benz C300?
Owners who report it most often also describe airbag warning light, abs light or abs activating and won't start.
Which Mercedes Benz C300 years have check engine light problems?
The model years with the most reports are 2008 (6 complaints) and 2009 (6 complaints).
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