really awful
Crashes / Fires:
1 / 11
Injuries / Deaths:
4 / 0
Average Mileage:
82,751 miles

About These NHTSA Complaints:

This data is from the NHTSA — the US gov't agency tasked with vehicle safety. Complaints are spread across multiple & redundant categories, & are not organized by problem.

So how do you find out what problems are occurring? For this NHTSA complaint data, the only way is to read through the comments below. Any duplicates or errors? It's not us.

2008 Mercedes-Benz C300 electrical problems

electrical problem

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2008 Mercedes-Benz C300 Owner Comments (Page 7 of 9)

« Read the previous 20 complaints

problem #60

Jun 032014


  • 66,000 miles


The contact owns a 2008 Mercedes Benz C-300. The contact stated while driving 5 mph, the engine stalled. The problem recurred three times. The vehicle failed to restart and was towed to the dealer. The technician diagnosed that the ignition system was defective and needed to be repaired. The vehicle was repaired. The manufacturer was notified of the problem. The approximate failure mileage was 66,000.

- Plantation, FL, USA

problem #59

Apr 092014


  • 46,000 miles
Right tail light warning signals appeared, upon examining the tail light connection it appeared burned and melted. All right tail lights were out including signaling.

- Bethesda, MD, USA

problem #58

Apr 252014

C300 6-cyl

  • 53,000 miles
Tail light connectors overheat and melted the light holder assembly. Fire risk.

- Pembroke Pines, FL, USA

problem #57

Mar 072014

C300 6-cyl

  • 73,000 miles


Good afternoon. I currently own a 2008 C300. I noticed my rear tail light warning indicator came on about a month ago. Upon checking the bulb, I noticed the jacket on one of the wires going into the connector was frayed. I put some electrical tape on it hoping that would solve the issue. 1 month later, I am now having the same issue again. I went to check on the light and noticed the fraying was growing worse and the wire was so hot I was concerned it was going to start a fire. I have since removed the bulb to prevent a fire from starting. In doing some research, it seems as though this is a common issue on this vehicle. Being that this is a pretty significant safety hazard and could potentially lead to a fire and even the loss of life, I am curious how and why there is not a recall on this defect. If you have any information on this issue please let me know. Thank you

- Providence, RI, USA

problem #56

Apr 092014

C300 6-cyl

  • 84,000 miles
I began to get warnings that the left rear tail light brake light and turn signal was malfunctioning. The left rear signal indicator in the dash blinked rapidly, and the computer gave warning message. When I removed the bulb panel I noticed that the wiring harness plug was burnt and the plastic housing that held the bulbs was burnt. The brown wire on the end of the harness connector was burnt and the metal tab that the connector connected to was melted along with the plastic plug.

- Byron, GA, USA

problem #55

Nov 132013


  • 54,000 miles
The contact owns a 2008 Mercedes Benz C300. The contact stated that the passenger side tail light failed to illuminate. The contact stated that the bulbs were changed on several occasions. The vehicle was taken to a dealer where it was diagnosed that the brake wiring harness and the lighting board needed to be replaced. The manufacturer was notified of the failure. The vehicle was not repaired. The approximate failure mileage was 54,000 and the current mileage was 70,000.

- Hollywood, FL, USA

problem #54

Apr 132014


  • 47,700 miles


The rear wiring for the tail light lighting sparked. While driving the car smelled strongly of burning plastic. After a quick look over I didn't see anything alarming. The very next day all of the lighting on the rear right tail lights went out, all indicators came on in the dash showing that all bulbs were malfunctioning. After pulling the housing unit out, I found that the wire was burned and so was the unit the wires attached to; melted and burned. Wiring should not catch on fire, this could have easily spread and when taken to the dealer to fix, they cut the wire to attach more but cannot guarantee that it won't happen again.

- Portland, OR, USA

problem #53

Apr 052014

C300 6-cyl

  • 86,766 miles
Rear passenger tail lights in my 2008 C300 were dim and got dash warning light to check rear lights. A couple bulbs were out so when I looked at the assembly and pushed on it the lights that were out lit up temporarily and I noticed the cable harness that plugs in it was corroded on the end and the brown wire at the end was exposed (melted?) and the black plug looks warped (melted?), looks like a common problem based on forum reports.

- Wayne, NJ, USA

problem #52

Dec 022013

C300 6-cyl

  • miles
Right side taillight wiring melting, lights not working.

- Shreveport, LA, USA

problem #51

Mar 252014

C300 6-cyl

  • 72,000 miles
Dash panel read an error of tail lights, brake lights, turn signal lights out on right side. Drove home from work, approximately 3 miles, smelled wires burning. Waited took car to autozone to get bulbs replaced. By the time I arrived, there was smoke coming from the compartment. The light assembly had caught fire and burned the plug and the board.

- Tallahassee, FL, USA

problem #50

Mar 072014

C300 6-cyl

  • 63,000 miles


My rear back tail light wiring panel fried. The light is not working at all and when I called manhattan Mercedes dealership they told me there is not an appointment available two weeks from 3/7/2014 then I called the dealership in brooklyn and they told me they did not have any appointments either so I just showed up there and they told me that due to my tail light being fully out I am not aloud to drive my car since its a safety issues but they did nothing to help me out and told me that they will have to order the part even though it is a recall then they told me I would have to pay around $ 400 dollars for the parts and labor but still they had no appointment for me to come in and fix it is 3/25/2014 and I still have a broken car and no way of driving it or fixing it because no other shop will take my car in since it is a dealer issue.

- Staten Island, NY, USA

problem #49

Mar 122014

C300 6-cyl

  • 85,000 miles
Received warning on dash to check rear driver tail light. Took the car in to the dealer to get it checked out and was told the wires from the tail light were melted from the electrical panel and my car is running on back up lights. The only solution is to replace the entire electrical back light system since the melted wires would eventually damage the entire brake light system. The cost to repair $900. Car smells burnt inside, and in the trunk. I am afraid of a fire, and getting rear ended if my brake lights stop working.

- Tampa, FL, USA

problem #48

Feb 102014

C300 6-cyl

  • 80,000 miles
As I was stopped at a red light both my wife, kids and myself smelled a strong odor in the cabin of the car. It was worse towards the back seat where the kids were. I immediately pulled over and got the family out of the vehicle (Mercedes Benz C300 2008) and saw that grey smoke was coming out of the trunk of the car. When I opened the trunk I noticed that the smoke was coming out of the right tail light. The cable that feeds electricity to that panel shorted and caused a small fire which turned off the minute I shut the vehicle down. I then tried pulling out the cable from the light panel and it did not budge because it melted and fused together with the light panel.

- Pembroke Pines, FL, USA

problem #47

Feb 082014


  • 80,000 miles
Getting instrument cluster messages about tail and brake lights to be checked. I replaced bulbs and have the same messages. I understand that the sensor monitors resistance and the bulbs may be fine. Getting message for both sides now and I am very concerned reading some of the other responses that we have a defect in this car that could cause injuries or fires, this should definitely be a recall from Mercedes. Danger! danger!

- Scottsdale, AZ, USA

problem #46

Feb 012014

C300 6-cyl

  • 32,200 miles
Right & left rear tail light assembly wiring harness plugs have melted where attached to the tail lamp assembly, causing brake, turn signal, hazard, and running lamps to not work intermittently. Brown wires get too hot to touch. Safety issue with electrical connectors.

- Avon, OH, USA

problem #45

May 012013

C300 6-cyl

  • 90,000 miles
Randomly I started receiving check bulb messages for the rear lights on both sides of my car. I didn't think much of it as I don't think they had ever been changed so I changed them and all was fine and then a few weeks later the messages started to pop up again. I rechecked the bulbs to make sure they were securely in place and they were so I started doing a little research and discovered that this was a known issue. Presently the entire left rear side is out and it looks like the wiring has overheated and been singed (looks like it had burned).when calling all the local southern cali dealerships (orange county/long beach) none of them will admit to it being a widespread problem and fixing it for free because the parent company, Mercedes Benz, hasn't yet. I have no desire to pay for a problem that should have never occurred in the first place. My major concern is about potential fires in the trunk due to this. All it will take is one spark to catch on something in the trunk and then well car is on fire. As much a Mercedes Benz claims to be about safety, I'm shocked, one at the design flaw and two that they are going through the motions of pretending like the thousands of owners who have reported this are making it up. They need to get on this asap.

- Huntington Beach, CA, USA

problem #44

Jan 012014

C300 6-cyl

  • 80,000 miles
Right tail light connector, brown wire has melted and has affected the brightness of the bulbs on the right side of the car.

- Albertville, MN, USA

problem #43

Feb 012014

C300 6-cyl

  • 3,000,000 miles
Rear light housing assembly wiring smelling like smoke, open the truck and plastics housing was melting and very hot.

- Freeport, NY, USA

problem #42

Jan 012014


  • 91,000 miles
The brown wire in the right hand brake light melted through the wire harness and started to melt the light board. This is a fire waiting to happen, I smelt burning in my car when I was driving. The break light no longer works.

- Princeton, IN, USA

problem #41

Dec 162013

C300 6-cyl

  • 73,000 miles
Multiple system warnings on dash saying to check right rear tail light, brake lamp, and signal light. Upon replacement of light bulbs, noticed that the ground wire cable covering was melted as well as burns and melting on the bulb housing unit. All right rear lights worked intermittently or dimly and now don't work at all. Now, there are system warnings for left rear lights as well. This is a safety issue as a fire can start in the trunk of the car as well as having rear lights working intermittently or not at all with no warning. Vehicle is no longer under warranty and authorized dealership won't repair at no charge unless there is a recall. This is a known issue with these vehicles, by both the manufacturer and authorized dealers. Recall should be issued.

- Visalia, CA, USA

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