2009 Mercedes-Benz C-Class Exterior Lighting
Owner-reported problems and safety issues filed with NHTSA. Review common failures, severity levels, and complaint trends over time.
Complaint Timeline
Chronological view of owner reports
WARNING MESSAGE THAT THE BACK TAIL LIGHTS & SIGNAL LIGHTS WERE OUT. AFTER CHECK IT APPEARED THAT THE WIRE HAD MELTED. *TR
REAR BRAKE LIGHTS ARE STAYING ON WHILE DRIVING THE CAR AND THE PARKING LAMPS BOTH WENT OUT. THE BRAKE LIGHTS OFF WHEN CAR IS OFF BUT WHILE I'M DRIVING THEY STAY ON THE WHOLE TIME. I TOOK IT TO RAY CATENA MERCEDES AUTO SERVICE AND THEY ADVISED ME THAT THEY NEEDED TO REPLACE THE WIRING HARNESS NO CHARGE AS PART OF A RECALL ON ALL MERCEDES VEHICLES BUT GAVE ME A QUOTE OF 1175 FOR THE MODULE. I WAS TOLD THAT THE MODULE SHORTAGE AND LIGHTS GOING OUT IS MOST LIKELY DUE TO THE WIRING HARNESS FRYING OUT. I SHOULDN'T HAVE TO PAY TO REPLACE A MODULE THAT WAS DUE TO A WIRING HARNESS FRYING OUT. THAT SHOULD BE A MANUFACTURER ISSUE. *TR
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. *TR
RIGHT TAIL LIGHT CLUSTER HAD A ELECTRICAL SHORT IN THE LAMP CONNECTOR, WHICH ULTIMATELY HAD TO PAY $250 TO REPLACE IN MID DECEMBER 2013. NOW IT SEEMS THAT I AM HAVING THE SAME ISSUE ON THE LEFT SIDE. THIS IS A SAFETY ISSUE AND NEEDS TO BE ADDRESSED. *TR
ON 6/10/2013 I HAD ERROR CODE AND PASSENGER SIDE PINS & CARRIER ASSEMBLY FAILED AND HAD TO BE REPLACED DEALER CHARGED ME $393.90 FOR THE JOB. ON 6/10/2013. ON 12/28/2013 I GET AN ERROR MESSAGE THAT THE LEFT SIDE TAIL LIGHT IS OUT. *TR
TL* 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 2/11/14*CN
MY TAIL LIGHTS STARTED TO GOING IN AND OUT. WHEN I WENT TO CHECK THE BULBS ALL BULBS ARE GOOD AND THERE IS BURN MARKS ON THE CASING HOLD IN THE BULB AND WIRING FOR THE PASSENGER SIDE TAIL LIGHTS. THERE IS A SHORT IN THE TAIL LIGHT WIRING. *TR
TL* THE CONTACT OWNS A 2009 MERCEDES BENZ C300. THE CONTACT STATED THAT WHILE DRIVING APPROXIMATELY 45 MPH, THE CHECK TAIL LIGHT WARNING INDICATOR ILLUMINATED. THE VEHICLE WAS NOT TAKEN TO A DEALER OR MECHANIC FOR DIAGNOSIS OR REPAIR. THE MANUFACTURER WAS NOT BEEN MADE AWARE OF THE PROBLEM. THE APPROXIMATE FAILURE MILEAGE WAS 32,000.
MY PASSENGER SIDE TAIL LIGHT WAS DIM, SO I WENT TO CHANGE OUT THE BULB. UPON REMOVING THE COVER INSIDE THE TRUNK, NOTICED THE BROWN GROUND WIRE TO THE TAIL LIGHT WAS EXTREMELY HOT, AND HAD MELTED THE PLASTIC HARNESS TO THE TAIL LIGHT ASSEMBLY. I HAVE SEEN NUMEROUS POSTS ON FORUMS ONLINE ABOUT THIS, YET MY LOCAL MERCEDES DEALERSHIP CLAIMED I WAS THE FIRST THEY HAD SEEN. I HAD TO PAY IN FULL TO HAVE THE HARNESS AND BOARD REPLACED. PLEASE ENCOURAGE MERCEDES TO RECALL THIS MAJOR SAFETY ISSUE AND FIX THIS PROBLEM. I'M LUCKY MINE DIDN'T GET TO THE POINT THAT IT CAUGHT ON FIRE AND STARTED SMOKING LIKE MANY OTHERS I HAVE READ ABOUT. I'M GUESSING MY DRIVERS SIDE IS NEXT? *TR
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. *TR
RIGHT REAR TAIL LIGHT WIRING HARNESS PLUG BURNED AND MELTED. BROWN WIRE END OF PLUG. *TR
TL* THE CONTACT OWNS A 2009 MERCEDES BENZ C300. THE CONTACT STATED THAT WHILE DRIVING 40 MPH, THE BRAKE LAMP, TURN SIGNAL, FOG LIGHT, AND SIDE MARK LIGHT ILLUMINATED. THE VEHICLE WAS NOT REPAIRED AND THE MANUFACTURER WAS NOT NOTIFIED. THE APPROXIMATE FAILURE MILEAGE WAS 53,000.
TL* THE CONTACT OWNS A 2009 MERCEDES C300. THE CONTACT STATED THAT THE EXTERIOR LIGHTING WARNING LIGHT ILLUMINATED. THE CONTACT INSPECTED THE CIRCUIT BOARD AND NOTICED THAT THE WIRE THAT CONTROLLED THE TAIL LIGHT WAS MELTED. THE CONTACT STATED THAT THE TURN SIGNALS AND THE TAIL LIGHTS STOP ILLUMINATING INTERMITTENTLY. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE. THE VEHICLE WAS NOT REPAIRED. THE APPROXIMATE FAILURE MILEAGE WAS 58,000. *TR
TL* THE CONTACT OWNS A 2009 MERCEDES CL-300. THE CONTACT NOTICED THAT THE FRONT PASSENGER'S SIDE HEADLIGHT HAD BECOME INOPERABLE. THE CONTACT DROVE THE VEHICLE TO THE DEALER FOR REPAIR AND NOTICED THAT THE HEADLIGHT WAS MELTED. THE DEALER STATED THE HEADLIGHT NEEDED TO BE REPLACED. THE VEHICLE WAS REPAIRED. THE MANUFACTURER HAS BEEN NOTIFIED. THE FAILURE MILEAGE WAS 63722.
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. *TR
THE PASSENGER SIDE TAILLIGHT CONNECTOR, PINS & CARRIER ASSEMBLY FAILED AND TO BE REPLACED. I WAS CHARGED $393.90 FOR THE JOB. *TR
PASSENGER SIDE REAR BRAKE LIGHT, DIRECTIONAL SIGNAL, SIDE MARKER, AND REAR LIGHT NOT OPERATIONAL. IT STARTED WITH THE DIRECTIONAL SIGNAL WORKING ON AND OFF, IT WOULD WORK FOR A WEEK OR TWO AND THEN ONCE IN A WHILE IT WOULD MALFUNCTION. NOW NONE OF THE LIGHTS ARE OPERATIONAL. UPON INSPECTING THE INSIDE OF THE SOCKET ASSEMBLY ONE OF THE WIRES LOOKED COMPLETELY CORRODED AND UPON TOUCHING IT WAS VERY HOT WHEN THE LIGHTS WERE ON. *TR
TURNED ONE VEHICLE AND MESSAGE STATED TO CHECK LEFT REAR SIGNAL, SIGNAL LIGHT APPEARED TO BE LOW. AFTER DRIVING ABOUT 30 MILES ENTIRE REAR LEFT SIGNAL/BREAK/SIDE LIGHT WAS COMPLETELY UNFUNCTIONAL. ON AUGUST 30TH A VISUAL INSPECTION SHOWED WIRING TO BE FRAYED AND A BURNT MARK ON THE PLASTIC WAS OBSERVED. *JS
THERE IS NO FAILURE OF THE VEHICLE BUT IT IS A SAFETY ISSUE. FOG LIGHT LENS THAT IS MADE OF GLASS HAS NO SAFETY BARRIERS TO PROTECT IT FROM BREAKAGE AND IT IS MOUNTED VERY LOW. WITH THE CRACK OF THE LENS, THE FOG LIGHT NEEDS TO BE CHANGED AND THE COST TO CHANGE IS IT $248. MERCEDES IS REFUSING TO ACCEPT IT AS A DESIGN DEFECT. IF I DO NOT CHANGE THIS DUE TO COST, IT IS A BIG HAZARD ESPECIALLY FOR OWNERS LIVING IN FOG PRONE AREAS LIKE SAN FRANCISCO BAY AREA WHERE I LIVE. IF NOT CHANGED, THERE ARE CHANCES OF ACCIDENT ON THE ROAD DURING FOG DAYS. MERCEDES HAS CHANGED THE DESIGN OF THE FOG LIGHTS IN THE FOLLOWING YEARS (AFTER 2009) OF C300. MERCEDES SHOULD CHANGE THIS DEFECTIVE DESIGN AND FIX IT FOR FREE FOR 2009 YEAR AS WELL FOR FREE. EVEN AFTER I PAY $248 TO GET THE LIGHT CHANGED MYSELF, IT WILL CRACK AGAIN SINCE IT IS MADE OF GLASS AND NOT COVERED BY ANY PROTECTIVE BARRIER. SO, EVEN AFTER PAYING TO GET THE FOG LIGHT REPLACED IS NOT GOING TO FIX THE DESIGN DEFECT.
TL*THE CONTACT OWNS A 2009 MERCEDES BENZ C300. THE VEHICLE WAS PARKED WHEN THE CONTACT NOTICED THERE WAS WATER INSIDE OF THE SIDE VIEW MIRRORS TURN SIGNALS. THE VEHICLE WAS NOT TAKEN TO A DEALER FOR DIAGNOSTIC TESTING OR TO BE REPAIRED. THE MANUFACTURER WAS NOTIFIED AND THE CONTACT WAS INFORMED THAT SHE HAD TO PAY THE REPAIR COST. THE FAILURE MILEAGE WAS 18,000 AND THE CURRENT MILEAGE WAS 23,000.
Trend Over Time
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Other Issues
Common problems reported
Quick Summary
The 2009 Mercedes-Benz C-Class has 45 Exterior Lighting complaints on file. Review the timeline above for detailed owner experiences.