2009 Mercedes-Benz C-Class
Problems, recalls and owner-reported issues
Electrical system is the leading concern among 670 owner complaints filed for this model year. This is the 2nd highest complaint count among 23 C-Class model years with reports.
Of the 2009 reports, 17 involved a crash and 19 involved a fire. 16 people were injured.
What owners report most often
Recalls and investigations
No safety recalls on file.
Representative owner complaints: exterior lighting
138 reports, newest first. Show all
Exterior lighting, Apr 24, 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. *TR
Electrical system, Exterior lighting, Apr 23, 2014, fire
RIGHT REAR PASSENGER LIGHTING ASSEMBLY CAUGHT FIRE. WIRING HARNESS AND LIGHT BULB CARRIER WERE BURNED. RIGHT REAR TURN AND BRAKE LIGHTS ARE INOPERABLE. *TR
Electrical system, Exterior lighting, Apr 15, 2014
RIGHT REAR TAILLIGHT PIG TAIL OVERHEATED AND SHORTED OUT LAMP HOLDER. YOU CAN SEE THE BURN MARKS WHERE IT WAS TOO HOT. HAS TO BE REPLACED. *TT
Exterior lighting, Apr 14, 2014
MY EXTERIOR TAIL LIGHTS ALL WENT OUT, THIS INCLUDES FOG LIGHTS, TAIL LIGHTS AND INDICATOR LIGHTS. PUT IN NEW BULBS AS WELL AS MADE SURE THE WIRES WERE CONNECTED WELL BUT IT REMAINS OUT. *JS
Electrical system, Exterior lighting, Apr 11, 2014, fire
MARCH 1 2014 I NOTICE MY WIFE DASH WAS LIGHTING UP WITH REAR BRAKE LIGHTS NEEDED TO BE REPLACED. I OPENED THE TRUNK AND HIT THE BRAKE COMPARTMENT AND IT CAME BACK ON. APRIL 11 2014 THE LIGHT CAME BACK ON AND I TRIED DOING THE SAME THING BUT NOTHING. OPENED THE BRAKE COMPARTMENT AND DISCONNECTED EVERYTHING ON THAT SIDE AWAITING A RESPONSE FROM THE DEALERSHIP. DON'T WANT ANOTHER MELT DOWN BACK THERE IN THE TRUNK. IF THIS IS THE BEST COMPANY OUT THERE JUST ANNOUNCE A RECALL AND FIX YOUR CUSTOMERS FAULTY EQUIPMENT. *JS
Electrical system, Exterior lighting, Apr 10, 2014, fire
THE DASH WARNED ME THAT MY REAR TAIL LIGHTS WERE MALFUNCTIONING. THE MESSAGE CAME AND WENT FOR SEVERAL DAYS UNTIL IT WAS ON CONTINUOUSLY. I ACCESSED THE ELECTRICAL COMPARTMENT AND THE GROUND SIDE OF PLUG, THE SOCKET AND THE WIRE WAS MELTED AND HAS BEEN ON FIRE. I HAVE PICTURES ON DROPBOX: LINK ATTACHED HTTPS://WWW.DROPBOX.COM/SC/W4TM7B28PHH9LAL/-DZ3HTMLS-. *TR
Exterior lighting, Apr 10, 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.. *TR
Electrical system, Exterior lighting, Apr 9, 2014
COMPONENTS OF THE TAIL LIGHT ASSEMBLY ON THE DRIVER AND PASSENGER SIDES HAVE OVERHEATED AND RENDERED THE UNITS INOPERATIVE. AS A RESULT, THE TAIL LIGHTS NO LONGER WORK. THIS SEEMS TO BE A KNOWN ISSUE AND COMMON OCCURRENCE IN AGING ASSEMBLIES OF THIS TYPE. *TR
Electrical system, Exterior lighting, Apr 8, 2014
REAR LIGHT ASSEMBLY FAILURE DUE TO A MELTED ELECTRICAL CONNECTOR. *TR
Electrical system, Exterior lighting, Other or unspecified, Apr 7, 2014
THERE SEEMS TO BE A LIGHT SHORTAGE ON THE RIGHT SIDE, THE RIGHT TURN SIGNAL DOESN'T WORK PROPERLY. THE LIGHTS WORK , THE ISSUE IS THE PANEL AND THE WIRE IS NOW MELTED AT THE TIP. THE WIRE MELTED INTO THE LIGHT PANEL. *TR
Exterior lighting, Apr 7, 2014
THE DRIVER SIDE TAIL LIGHT HOUSING HAS BURNT OUT AND KNOCKED OUT ALL LIGHTS IN THE CLUSTER. THIS SEEMS TO BE A KNOWN ISSUE, BUT THERE HAS YET TO BE A RECALL FOR THIS. *TR
Electrical system, Exterior lighting, Mar 28, 2014
WIRING HARNESS ON REAR TAIL LIGHT MELTED CAUSING THE TAIL LIGHT CIRCUIT BOARD TO STOP WORKING ,CAUSING THE BRAKE LIGHTS ,REVERSE LIGHTS AND BLINKER TO STOP WORKING.SPOKE WITH MERCEDES BENZ DEALER SHIP AND THEY TOLD ME THIS WAS A COMMON PROBLEM AND THAT THEY WERE NOT GONNA FIX IT FOR FREE AND THAT I WOULD HAVE TO PAY FOR THE REPAIRS.THIS IS A HAZARD CAUSE I WAS DRIVING AT NIGHT WITH MY KIDS IN THE CAR,WHEN MY LIGHTS WENT OUT.AFTER LOOKING AT THE MELTED HARNESS WIRE THIS IS ALSO A POTENTIAL FIRE HAZARD. PLEASE LOOK INTO THIS MATTER BEFORE SOME ONE IS SERIOUSLY INJURED. MERCEDES BENZ IS AWARE OF THE PROBLEM AND REFUSES TO CORRECT IT.... *TR
Electrical system, Exterior lighting, Mar 24, 2014, fire
I WAS DRIVING DOWN THE HIGHWAY AND SMELLED AN INTENSE BURNING. I HAD BEEN GETTING THE TAILLIGHT ERROR CODES AND THOUGHT MAYBE IT WAS A FUSE. DECIDED TO FINALLY RESEARCH ONLINE AND DISCOVERED THAT IT IS A VERY COMMON OCCURRENCE THAT MERCEDES TAILLIGHTS/WIRING SPONTANEOUSLY CATCH ON FIRE. I REMOVED THE HARNESSES FROM THE TAILLIGHTS AND NOTICED THE PLUG HAD ALMOST BEEN ENTIRELY DESTROYED/BURNED ON THE RIGHT REAR, AND WAS STARTING TO BURN ON THE LEFT REAR. I LOST ALL POWER TO MY TAILLIGHTS AT APPROXIMATELY 11:30 AT NIGHT, AND THE HEADLIGHTS STARTED SHUTTING OFF AND ON RANDOMLY. THE HEADLIGHTS ARE STILL TURNING OFF AND ON RANDOMLY, APPARENTLY THIS IS A KNOWN DEFECT WITH THE AUTO DIM SETTING. I HAVE PICTURES OF EVERYTHING, EVEN THOUGH I HAVE NOW PAID TO FIX THE TAILLIGHT HARNESSES (A COST OF OVER $240 IN PARTS) BECAUSE MERCEDES HAS NOT WILLINGLY RECALLED THIS FIRE HAZARD AND KNOWN DEFECT. TO BE HONEST, I AM PISSED. PLEASE LET ME KNOW WHERE I CAN SEND THE DEFECTIVE PARTS AND/OR PICTURES TO. *TR
Electrical system, Exterior lighting, Mar 14, 2014
ALL REAR TAIL LIGHTS STOP WORKINGI REPLACED THE LIGHTS. MERCEDES DEALERSHIP SAID THE WIRES HAD FRIED AND THAT THEY HAD SEEN MANY CASES SIMILAR TO THE REAR LIGHTS. $600 TO CORRECT THE ISSUE. *TR
Electrical system, Exterior lighting, Mar 12, 2014
THE TAIL LIGHT COMPLETELY MELTED THE CIRCUT BOARD AND STOPPED WORKING. *TR
Electrical system, Exterior lighting, Mar 3, 2014
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. *TR
Exterior lighting, Feb 26, 2014
WARNING MESSAGE THAT THE BACK TAIL LIGHTS & SIGNAL LIGHTS WERE OUT. AFTER CHECK IT APPEARED THAT THE WIRE HAD MELTED. *TR
Exterior lighting, Feb 24, 2014
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
Electrical system, Exterior lighting, Feb 23, 2014
COMPLAINT: C-CLASS REAR LIGHT MELTING ISSUE. REAR BULB LIGHT FAIL ERROR. REPORTING A BURNING SMELL OF MELTING PLASTIC AND FAILURE OF REAR TURN SIGNALS AND BRAKE LIGHTS. I WENT OUT ON THE INTERNET AND SAW I WASN'T THE ONLY ONE THIS HAPPENED TO AND THAT THE U.S. SAFETY REGULATORS HAVE OPENED A PROBE OF AN ESTIMATED 218,000 MERCEDES C-CLASS SEDANS HAVE BEEN REPORTED. I CALLED THE MERCEDES-BENZ OF SEATTLE AND EVERYONE THAT I TRIED TO TALK TO ABOUT THIS PROBLEM DIDN'T ACKNOWLEDGE IT AT ALL. OF COURSE I HAD THE IT REPAIRED AND IT COST $541.41 AGAIN TRYING TO TALK TO THEM ABOUT THIS PROBLEM AND WHAT I HAD SEEN ON THE INTERNET NO ONE WAS SAYING ANYTHING WHICH SHOWED ME THEY HAVE BEEN TOLD NOT TO TALK ABOUT IT. I CALLED MERCEDES CORPORATE OFFICE TO SEE IF THEY COULD TO A GOOD WILL GESTURE BUT I WAS TOLD "NO". ADD ME TO THE LIST OF COMPLAINTS. I WOULD LIKE TO BE REIMBURSED FOR THIS AMOUNT SO I HOPE I SEE A RECALL COME THROUGH. *TR
Electrical system, Exterior lighting, Feb 22, 2014, fire
ALL REAR TAIL LIGHTS STOP WORKING, SOME IN THE FRONT NOT WORKING, ELECTRICAL WIRES WERE BURNT I REPLACED THE LIGHTS, THE DASHBOARD ALERT WENT AWAY THEN CAME BACK ON 10 MINUTES LATER. ALSO TIRE PRESSURE MONITOR INOPERATIVE ON DASHBOARD ALERT AS WELL. MY FRIEND WITH A 2008 C300 HAS THE SAME ISSUES WITH HERS TOO. *TR
Electrical system, Exterior lighting, Feb 19, 2014, fire
LIGHT WARNING LIGHTS CAME ON DASHBOARD FOR REAR LIGHT AND TURN SIGNAL. AFTER LOOKING @ THE CONNECTER FOUND IT SMOKING AND MELTED ... IMMEDIATELY UNPLUGGED IT. MB DOES NOT HAVE A RECALL EVEN THOUGH YOU ARE INVESTIGATING . *TR
Exterior lighting, Feb 13, 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. *TR
Exterior lighting, Feb 10, 2014
ENTIRE TAIL LIGHT ON DRIVE SIDE WENT OUT. I LOOKED AT THE LIGHTING HOUSING AND NOTED BURNT WIRES EMITTING FROM THE HOUSING. *TR
Electrical system, Exterior lighting, Feb 9, 2014
WHILE DRIVING HOME FROM WORK, I WAS RECEIVING ERROR MESSAGES ON MY INSTRUMENT CLUSTER ASKING ME TO CHECK THE REAR PASSENGER BRAKE LIGHTS AND TURNING SIGNAL BULBS. ONCE I WAS HOME, I OPENED MY TRUNK AND SMELT BURNING PLASTIC. I OPENED THE ACCESS PANEL TO THE FUSE BOX LOCATED NEAR THE PASSENGER TAILLIGHT AND INSPECTED THE AREA FOR DAMAGE. I NOTICED SOME RESIDUAL SMOKE COMING FROM THE CONNECTOR ATTACHED TO THE TAILLIGHT BULB ASSEMBLY. I REMOVED THE BULB ASSEMBLY AND THE BROWN GROUND WIRE HAD BURNED THROUGH THE PLASTIC ASSEMBLY. I REMOVED THE WIRE HARNESS FROM THE ASSEMBLY AND THE CONNECTOR CRUMBLED DUE TO THE DAMAGE. *TR
Exterior lighting, Feb 4, 2014
THE WIRES WITHIN BOTH OF MY HEADLIGHTS OF MY 2009 MERCEDES C300 HAVE THEIR INSULATION SO DETERIORATED THAT THE WIRES ARE FULLY EXPOSED. THIS ISSUE CAUSES THE LIGHTS TO CUT IN AND OUT WITHOUT WARNING WHICH HAVE OCCURRED DURING HIGHWAYS SPEEDS AND OR RURAL AREAS IN PUERTO RICO. THIS DANGEROUS SITUATION IS NOT BEING TAKEN CARE OF BY THE MANUFACTURER WITH VARIOUS ATTEMPTS TRIED. *TR