general problems of the 2009 Mercedes Benz C300 - part 1

38 problems related to exterior lighting have been reported for the 2009 Mercedes Benz C300. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2009 Mercedes Benz C300 based on all problems reported for the 2009 C300.

1 Exterior Lighting problem

Failure Date: 05/08/2026

I have messages on my instrument panel stating I have airbag malfunction going on I also have tail lights that are not working and after trying to replace the bulbs it still don't work so obviously it's the light bulb panel so I went and looked at recalls and says that these are all recalls on my car but that they were fixed. So I don't know why I have them all bad again so I need to know what to do.

2 Exterior Lighting problem

Failure Date: 01/06/2025

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).

3 Exterior Lighting problem

Failure Date: 07/09/2024

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.

4 Exterior Lighting problem

Failure Date: 06/01/2023

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.

5 Exterior Lighting problem

Failure Date: 02/14/2023

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.

6 Exterior Lighting problem

Failure Date: 02/10/2023

The contact owns a 2009 mercedes-benz C300. The contact stated while driving approximately 65 mph the instrument cluster had begun to flicker and the vehicle stalled. The contact stated he had power steering and brakes and pulled off of the highway and placed the vehicle into park (p). The vehicle would not restart and the contact had the vehicle towed to a dealer. The vehicle had not been diagnosed and had not been repaired. The manufacturer had been informed of the failure. The contact researched and related the failure to NHTSA campaign number: 22v168000 (exterior lighting, electronic stability control, engine and engine cooling). The failure mileage was approximately 119,000.

7 Exterior Lighting problem

Failure Date: 09/14/2022

The contact owns a 2009 mercedes-benz C300w. The contact stated that while driving at an unknown speed, all the warning lights illuminated. The vehicle was taken to the dealer where it was diagnosed that all the lights on the left tail lamp connectors were melted into the bulk assembly mount and needed to be replaced. The contact was then informed by the dealer of the 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 has not received a response. The failure mileage was approximately 93,000.

8 Exterior Lighting problem

Failure Date: 05/08/2022

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.

9 Exterior Lighting problem

Failure Date: 08/26/2021

The contact owns a 2009 mercedes-benz C300. The contact stated while driving and activating the turn signals, the taillights were inoperable. Additionally, the contact stated while driving and depressing the brake pedal to come to a stop, the brake lights were significantly dimmed except for the third brake light. The vehicle was taken to the dealer, where it was diagnosed with electrical failure. The vehicle was not repaired. The contact related the failure to NHTSA campaign number: 14v177000 (exterior lighting); however, the VIN was not included. The manufacturer was notified of the failure and informed the contact that they could not assist because the VIN was not included in the recall. The manufacturer referred the contact to the NHTSA hotline for assistance. The failure mileage was unknown.

10 Exterior Lighting problem

Failure Date: 02/01/2021

The contact owns a 2009 mercedes-benz C300. The contact stated that she had experienced several electrical failures with the vehicle which include the power seat and windows, the parking brake, the exterior lighting, and the air bag warning lights. She also stated that the vehicle would shut off while driving at various speeds as several warning lights would appear on the instrument panel. The dealer was notified of the failure but offered no assistance. Upon investigation, the contact linked that failure to NHTSA campaign number: 22v168000( exterior lighting, electronic stability control, engine and engine cooling). The manufacturer had yet to be notified of the failure. The vehicle had yet to be repaired. The failure mileage was approximately 120,000.

11 Exterior Lighting problem

Failure Date: 02/02/2018

Passenger seat airbag sensor not working when someone sits on the seat also passenger side electrical system not working and causing the passenger side lights to stay on when vehicle is off and mercedes does not want to do anything about and says it is out of warranty and I need to pay to have the whole system replaced.

12 Exterior Lighting problem

Failure Date: 06/01/2016

"takata recall" I was driving to work around 10:30 am in my 2009 Mercedes Benz C300 enjoying the commute. As I approached the stop light. . . . . Blank!!!! I lastly remember breaking . . . . To open my watering eyes to see that I hit another vehicle and don't recall anything at all. As I get up in realized that my head hurts and there was a small tear in the steering wheel as a small portion of the bag deployed but not fully. . It appeared to be a faulty bag that has caused this serious inconvenience.

13 Exterior Lighting problem

Failure Date: 12/05/2015

Car was at the parking front of my home, about to go to work , car won't start , no warning , nothing, completely dead, had to be without car for a week, repair costs 1,200. Towed to mercedes service. Specific issues was steering column lock failed. I have so many issues with this car, lights, windows, tires, control power fails many times when car is in driving mode. So many owners has same problems, it is a safety issues why this wasn't reported and recall on this one. Thought mercedes cars are most reliable, obviously that's not true .

14 Exterior Lighting problem

Failure Date: 10/04/2015

The car won't start when you turn the key. I have taken it to a mercedes mechanic and he can't find anything wrong after being looked at for a b1 service. We thought this would fix it. Now it won't start again. When turn the key, everything lights up as if the car is going to start but it won't. It had been starting after turning the key a few times and eventually it would catch. The problem started 2 weeks ago, now it won't start at all.

15 Exterior Lighting problem

Failure Date: 05/01/2015

Front lights socket over heat and melting. Manufacture and dealership refuse to replace, however car still in full extended warranty safety issue and can cause fire.

16 Exterior Lighting problem

Failure Date: 07/08/2014

The contact owns a 2009 Mercedes Benz C300. The contact received notification of NHTSA campaign id number: 14v177000 (exterior lighting). The dealer was contacted indicated that the parts were not available. The manufacturer was contacted and made aware of the delay however, the manufacturer was not able to provide a specific date of when the parts would become available. The contact was waiting to schedule the appointment and remedy the problem specified on the recall. Updated 08/19/lj.

17 Exterior Lighting problem

Failure Date: 05/10/2014

Tl-the contact owns a 2009 Mercedes Benz C300. The contact received NHTSA campaign number: 14v177000 (lighting). The contact stated vehicle was taken to the dealer mechanic and they were to remedy the recall. The contact stated the recall was not remedied and it is a safety concern. The warning indicators are illuminated. The vehicle was not repaired. The manufacturer was not notified of the failure. The approximate failure mileage was 58,000. Lb.

18 Exterior Lighting problem

Failure Date: 04/22/2014

I was driving the vehicle and a message light came on saying check rear right brake lamp, turn lamp ,and tail lamp so I stopped by the auto part store to have them replace the bulbs and they found the light holder and the wiring harness to the lights had melted.

19 Exterior Lighting problem

Failure Date: 04/11/2014

Takata recall. The contact owns a 2009 mercedes-benz C300. The contact received notification of NHTSA campaign numbers: 14v177000 (exterior lighting), 15v711000 (air bags), and 16v081000 (air bags); however, the parts to do the repairs were unavailable. The contact stated that the manufacturer exceeded a reasonable amount of time for the recall repairs. The manufacturer was made aware of the issue. The contact had not experienced a failure. VIN tool confirms parts not available. Parts distribution disconnect.

20 Exterior Lighting problem

Failure Date: 04/05/2014

Rear lighting does not always work, I have gotten error codes one day and the lights work the next. I have read plenty of complaints on the lighting issue. One time its a bulb on the right and next its a bulb on the left. Today they all work. .

21 Exterior Lighting problem

Failure Date: 01/06/2014

All the lights outside of the car are going out. The entire rear left light is not working, along with front head lights. They have been replaced and I keep receiving messages on the dashboard. It was taken to the dealer and there is corrosion on the wires.

22 Exterior Lighting problem

Failure Date: 12/20/2013

The contact owns 2009 mercedes C300. While driving 25 mph, the contact stated that the service warning lamp illuminated on the vehicle advising her to service the rear lighting. The contact discovered that the rear passenger light wiring was burned. The vehicle was not taken to dealer or an independent mechanic for inspection. The manufacturer was made aware of the defect. The approximate failure mileage was 51400. Updated 2/11/cn.

23 Exterior Lighting problem

Failure Date: 11/28/2013

The lamp connector on the rear right side of the light component went out, when I went to look at it, I noticed the connecter plug in as well as the light circuit board was burnt and would not be plugged back in.

24 Exterior Lighting problem

Failure Date: 10/31/2013

Was driving home from work, then all the check light bulbs went on for the rear left side got home and noticed there was a burn mark on the light connector. Took it to the dealership on 11/02/2013 had left rear light connector and wiring replaced a week later, the right rear signal check light bulb came on. Got home checked the connector which had a brown burn spot also and loose wiring in the back of the connector so now I have to go have the right connector and wiring replaced.

25 Exterior Lighting problem

Failure Date: 10/31/2013

Warning indicator came up on instrument panel to "check rear tail and brake lamps" the rear tail, turn, and brake lamps have failed in my car. The wiring harness has burned and emits excessive heat to the touch. I'm unsure of how long I was driving with my taillights out.

26 Exterior Lighting problem

Failure Date: 10/20/2013

Fourth occurrence of all right rear indicator lights going out all together in the past 2-3 months. Just did some research and it appears NHTSA is investigating this. I am taking this in to the dealer tomorrow however, several owners of the 2009 c class are complaining of the same problem due to a bad connection to the rear light unit which is causing shortages and fires. It is very evident that my vehicle has the same issue.

27 Exterior Lighting problem

Failure Date: 10/08/2013

Right rear light connector and lighting housing burned and is now inoperative. Prior to this the lights would dim in and out before completely burning out. When I opened the truck to look at it there was a bad burn smell and sparking coming from the fixture.

28 Exterior Lighting problem

Failure Date: 09/08/2013

Car illuminated a warning to check rear left taillight. Upon inspection, noticed that the wiring is starting to retract from the connector and left and right assemblies have noticeable blackened areas where the wiring is crimped into the contact that is inserted into the connector. This is similar to other complaints filed.

29 Exterior Lighting problem

Failure Date: 08/06/2013

The information system in my car gave me the symbols for the right back lights. I stopped to check and realized my lights were out. I opened the wiring in the trunk and realized that the brown wire on the outer side burned through the connector and the lamp carrier.

30 Exterior Lighting problem

Failure Date: 07/05/2013

Both rear right and left tail bulb holders connector and pin damaged replaced lamp carriers and plugs. Upon inspection they looked like they were burned with a torch.

31 Exterior Lighting problem

Failure Date: 06/10/2013

The passenger side taillight connector, pins & carrier assembly failed and to be replaced. I was charged $393. 90 for the job.

32 Exterior Lighting problem

Failure Date: 05/19/2013

While highway driving the right tail lamp, brake lamp, fog lamp dashboard warning light illuminated. Upon inspection, the ground wire insulation and connector on the taillight assembly had melted from overheating. We experienced a total loss of all lighting on the right rear taillight assembly.

33 Exterior Lighting problem

Failure Date: 04/01/2013

The contact owns a 2009 mercedes-benz C300. The contact stated while traveling various speeds, he heard a popping noise. Upon investigation, it was found that the passenger taillight bulb failed. The contact also mentioned that the driver's front interior door handle detached. The vehicle was taken to the dealer where the failure was confirmed. The vehicle was repaired. The manufacturer was not contacted about the failure. The failure mileage was approximately 47,000.

34 Exterior Lighting problem

Failure Date: 03/25/2013

Received in-dash notifications that all lights on left side of car were out. Took to local repair shop, which found that left rear taillight housing had melted. Had new lighting carrier installed and wires repaired.

35 Exterior Lighting problem

Failure Date: 02/13/2013

Warning indicators flashed for all the right side rear lights. When I went to change bulbs discovered the covering on wires had melted along with the plastic harness. Took it to dealer next day and the harness had to be replaced for a little over $150. It is happening on the other side also. Service rep has seen on other C300s. Mb denies this is a defect.


Other Exterior Lighting related problems of the 2009 Mercedes Benz C300


C300 Service Bulletins
C300 Safety Recalls
C300 Defect Investigations