Huge win for car owners! All TSBs to be made public. The Center for Auto Safety just made the NHTSA (US Government) make public the full text of all TSBs from now on. They are the same organization that has petitioned the NHTSA & filed lawsuits to protect car owners over exploding gas tanks & other major safety issues. Whenever you drive in your car, you are safer thanks in part to a lot of work over the years by this small but very effective consumer advocacy group.

Please take a moment & say thank you by donating $5 or whatever you can to the Center for Auto Safety.


really awful
Crashes / Fires:
1 / 11
Injuries / Deaths:
4 / 0
Average Mileage:
81,855 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

Find something helpful? Spread the word.
Get notified about new defects, investigations, recalls & lawsuits for the 2008 Mercedes-Benz C300:

Unsubscribe any time. We don't sell/share your email.

2008 Mercedes-Benz C300 Owner Comments (Page 8 of 9)

« Read the previous 20 complaints

problem #31

Jul 182013

C300 6-cyl

  • 54,500 miles


The wiring harness to the tail lamp on the right side was fried & filled with smoke and now the tail lamp goes very dim & almost off, but replacing with new bulb doesn't help.

- Alameda, CA, USA

problem #30

Dec 142012

C300 6-cyl

  • 54,000 miles
Tail light message. Found harness melted on the passenger side tail light. Now I get a message from both sides.

- Orlando, FL, USA

problem #29

Jan 092013


  • 45,000 miles
The contact owns a 2008 Mercedes Benz C300. The contact stated that while driving approximately 60 mph, the fuel gauge reading displayed empty although the fuel capacity level was half full. There was a recall associated with NHTSA campaign id number was 08V303000 (electrical system). The VIN was not included. The vehicle was not diagnosed or repaired. The approximate failure mileage was 45,000.

- Minneapolis, MN, USA

problem #28

Aug 162013

C300 6-cyl

  • 54,000 miles


Cars automated warning system indicated problems with right rear lighting system ("check right rear turn signal etc"). took car to mechanic. There had been a short in the right rear electrical system...plastic circuit box exhibited signs of a short and melted plastic. Mechanic replaced wiring, circuit box and lights. Could very easily have had a fire in the trunk of the car.

- Greenville, SC, USA

problem #27

Aug 012013

C300 6-cyl

  • 51,000 miles
Burning smell and melted connectors on rear tail light assembly.

- Garland, TX, USA

problem #26

Jun 122013

C300 6-cyl

  • 36,000 miles
The left rear light was noticed to be dimmer than the right one. Once the light cluster was open up, a burn /melting of the electrical socket was noticed.

- Mclean, VA, USA

problem #25

Aug 022013


  • 100,000 miles


The left tail light connector and the plate connection melted. Reported the issue to mb dealer and mb cac but they refused to accept it as a design flaw. The explanation given to me was it melted because of heat of light bulbs. The same flaw has been reported on many forum and I think it is a recall item.

- Lawrenceville, NJ, USA

problem #24

Jun 152013

C300 6-cyl

  • 70,000 miles
The right rear bulb assembly and harness have melted and are only intermittently functional.

- Dallas, TX, USA

problem #23

Aug 242012

C300 6-cyl

  • 78,858 miles
Both tail lights lamp carriers and contact bushings had melted around ground wires in my 2008 C300 Mercedes.

- San Jose, CA, USA

problem #22

Aug 062013


  • miles
Driver information system showed that the rear right brake lamp was out. While checking the rear tail light to replace the bulbs we checked the harness and it was completely melted! then I knew why I had smelt a burning smell before. I called my nearest Mercedes dealer ship and they said it would cost around $500-$600 to fix. I didn't have to explain he knew exactly what was talking about but im out of warranty. This should be fixed by Mercedes. Its absurd and needs to be brought to attention for our safety.

- Channelview, TX, USA

problem #21

Apr 012013

C300 6-cyl

  • 75,000 miles


Ground wire to rear right tail light melted at the connection point to the tail light board and harness. Smelled smoke and found damage shortly after.

- Santa Rosa Beach , FL, USA

problem #20

Jun 012011

C300 6-cyl

  • 36,000 miles
Noticed for the first time that the left rear brake and tail light was much more dim than the corresponding lights on the right side. I also noticed that these same lamps also flickered from dim to slightly brighter and reported on the next service appointment. When it came back from the dealer the problem was marginally better; however, it still exists to this day. I see numerous complaints on Mercedes owners hotlines with various degrees of success at that dealers. I have also seen comments about a so-called fix that has been mentioned. My complaint was never printed out on my copy of the work order for that service date either. I've given up.on complaining to Mercedes as I had another complaint to the factory which ended up just being brushed off as normal. Once again no documentation of that visit was given even thought a factory rep was present. My belief is that the tail lamps should be fairly equally bright in order to provide vehicles behind you an accurate location of the rear of my vehicle. A proper fix that completely corrects this issue should be required to be performed on these vehicles at no charge to the owners. I am the original purchaser of this vehicle.

- Cape Coral, FL, USA

problem #19

Feb 202013


  • 50,000 miles
Started the vehicle and there was a failure for head lights, tail lights and turn signals. I took the vehicle in to repair the bulbs and they told me the control board failed, melted and they replaced it. I was later told this is a common issue with the 2008 C300.

- Sherman Oaks, CA, USA

problem #18

Jun 282013

C300 6-cyl

  • 56,000 miles
I have had numerous messages on my 2008 C300 Mercedes regarding tail light/ brake light out. I have noticed that my passenger side tail lights/ running lights are much dimmer than the driver side lights. I have inspected the wiring harness assembly on the passenger side and noticed significant discoloration with the "brown wire" and associated connector; the connector has also been "hot" to the touch. I have an appointment with my local Mercedes dealer next week to have it inspected/ evaluated. I really became more cautious following the recent news article regarding 2008-2009 Mercedes tail light issues. Something is not right and it needs to be addressed/ corrected.

- Suffolk, VA, USA

problem #17

Dec 182012

C300 6-cyl

  • 40,000 miles
The right rear tail lights stopped working. After examining the wiring and harness were melted. Had to bring in to fix. The back board were the lights are on was also burnt. Now having problems on the left side. I just saw on the national news were other people are having the same problem with this year car. It seems the wiring is not proper size to handle the electric load. This is very dangerous driving this vehicle with the rear lights going out. The lights are running way to hot. Seems to be a defect on this year 2008 vehicle. I heard that this is being investigated by you. My wife is afraid to drive the car because of getting hit from behind because the problem with lights burning out or maybe a fire from the wiring melting. Mercedes says they will not fix and that this is not a problem.

- Zephyrhills, FL, USA

problem #16

Oct 302009


  • 38,000 miles
The rear driver side tail light assembly failed multiple times. The connectors to the bulbs and the panel was melted due to heat and therefore, dimming of the lights occurred followed by complete malfunction. The first time was replaced under manufacturer warranty. The second and third time this occurred was paid for out of pocket because vehicle's mileage exceeded the manufacturers warranty coverage.

- Santa Rosa, CA, USA

problem #15

Jul 082013


  • 24,450 miles
My message ctr on my Mercedes C 300 (2008) steering wheel said to check right, rear tail and brake light. I have checked the lights and had a mechanic check lights, and all seem fine. I heard the report on wbz radio on 7-15-2013 about rear lights on Mercedes 2008, and 2009 possibly causing fires, and wonder if the message on my car may be warning of a possible fire or future failure.. I called the Mercedes service dept. And they had not heard of this problem! I called wbz radio in boston, and they directed me to nhtsb web site. The message to check rear lights still comes on.

- Wellesley, MA, USA

problem #14

Dec 172012

C300 6-cyl

  • 56,450 miles
While driving in the evening on highway, both tail lamp warnings came on indicating bulbs had burned out. I stopped car after smelling an odor. I saw the left tail lamp was dim and the right tail lamp was normal. I did not open trunk. After reaching my destination I changed the left tail lamp bulb, but bulb was still dim. I pulled off the electrical connector and found 3 leads on the connecter burned and melted. I went to the dealer in alexandria, Virginia and inquired about the problem. I was informed no recall had been issued and the dealer would not fix. So, I purchased left tail light assembly, connector and pins to make repair myself (I am a former airplane mechanic). Tail lamps have been functioning normally since I replaced the parts.

- Alexandria, VA, USA

problem #13

Jul 092013


  • 36,000 miles
Right rear tail light dash monitor indicated a problem. Found the right rear tail light circuit board ground wire burned and smoking. Plastic connector and lighting circuit board melting. Appears that the electrical current draw is greater than the ground wire can handle. Taken to dealer for fix. No response as yet, but based on other online reports, it appears unlikely they will support a warranty claim fix.

- Marietta, GA, USA

problem #12

Jun 122013

C300 6-cyl

  • 49,000 miles
The passenger side rear tail light harness caught fire and melted. There are countless complaints and reports on this issue, but Mercedes refuses to correct the problem or do a recall. Most incidents occur between 50,000 and 60,000 miles and is not covered by warranty. You can google this issue and see the wide spread complaints on the melting wiring harness. There are also several discussions on mb forum. Below is another website with several complaints of melted tail light wiring and non-working tail/brake and turn signals. I've contacted reliable Mercedes in springfield, mo and they acknowledge that their shop has repaired many Mercedes C300's with melted tail light wiring, but said Mercedes will not fix recall this problem. This is a tremendous safety issue and I respectfully request that your Agency address this matter with Mercedes.

- Springfield, MO, USA

Read the next 11 complaints »

Not what you are looking for?