ELECTRICAL SYSTEM
DRIVERS POWER SEAT CONTROL MODULE DRAINS BATTERY WHEN AUTO IS PARKED.
NHTSA complaint #10512849 — an unverified report by a vehicle owner.
Mercedes Benz C Class electrical problems
95 of the 249 complaints filed about the Mercedes Benz C Class are about the electrical system — 38% of everything owners reported. The worst model year for it is 1995.
95
Complaints
38%
Share of all complaints
1
Crashes
10
Fires
Electrical System complaints by model year
1999 C Class
3
3.2%
What owners said
ELECTRICAL SYSTEM
I HAVE BLACK MERCEDES C230 KOMPRESSOR SPORTS SEDAN 2004 MODEL. CAR WAS PURCHASED BRAND NEW AT MERCEDES AUTHORIZED DEALER. THERE IS NO MODIFICATION MADE TO THIS CAR AND ALL THE SERVICING DONE AT MERCEDES AUTHORIZED DEALER SINCE I BOUGHT THIS CAR. IT HAD ONLY 58000 MILES. LAST B SERVICING WHICH CHECKED ANY SAFETY RELATED ISSUES AND INCLUDES REGULAR MAINTENANCE, WAS DONE AT AUTHORIZED DEALER ON 02/18/2012. NO ISSUE WAS INFORMED ON 02/18/2012 TO US BY MERCEDES AUTHORIZED DEALER SERVICING DEPARTMENT. ON 06/21/2012, WHEN I WAS DRIVING THIS CAR FROM WORK TO HOME, I TURNED ON A/C, A/C SHUTDOWN AND I STARTED SMELLING SMOKE. ON LEFT SIDE OF MY CAR THERE IS A/C VENT AND I SAW FIRE INSIDE THE HOOD THROUGH THAT VENT.I PULLED OVER CAR RIGHT AWAY AND ELECTRICITY WENT OUT WITH IN 1 MIN OF MY PULLING OVER AND WITHIN 4 MIN, WHOLE CAR WAS BURNING. MY CAR IS NOW TOTALED. THIS POSES FOLLOWING SECURITY CONCERNS: 1. MERCEDES C230 2004 IS MADE OF HIGHLY INFLAMMABLE MATERIAL AND DRIVER AND USERS OF CAR HAS VERY LESS CHANCE TO SURVIVE IF THERE IS FIRE. 2. MERCEDES C230 2004 MODEL A/C UNIT IS NOT OF HIGHEST QUALITY AND ELECTRICAL SYSTEM IS FAULTY. BOTH OF ABOVE ISSUES POSES VERY SERIOUS SECURITY RISKS TO PUBLIC AND IT NEEDS THROUGH INVESTIGATION. I CONTACTED MERCEDES HEAD QUARTER FOR INVESTIGATION AND MERCEDES DECLINED TO INVESTIGATE. GEICO STATED IN REPORT THAT HOOD IS STUCK AND CAUSE OF FIRE IS UNKNOWN. GEICO INSURANCE COMPANY AUTHORIZED MERCEDES ENGINEERS TO INVESTIGATE FURTHER UPON MY REQUEST AND MERCEDES USA DOES NOT WANT TO INVESTIGATE FURTHER. I HAVE PICTURES OF BURNT CAR AND CAN SHARE IF IT HELPS IN INVESTIGATION TO RULE OUT ABOVE 2 CONCERNS. WE DO NOT WANT OTHERS TO GO THROUGH SAME ORDEAL AS WE WENT THROUGH. *TR UPDATED 06/13/13*LJ UPDATED 06/17/2013
NHTSA complaint #10464581 — an unverified report by a vehicle owner.
ELECTRICAL SYSTEM
WAS DRIVING VEHICLE DOWN THE HIGHWAY TRAVELING AT NORMAL SPEEDS. ALL OF A SUDDEN CAR BEGAN BACKFIRING AND SPEED DROPPED FROM 65 MPH TO 30 MPH. THE CAR WOULD NOT ACCELERATE AND BEGAN TO BACKFIRE MORE. TEMP WENT UP AND CAR STARTED SMOKING. PULLED OVER TO CHECK ON CAR AND IT NEVER RESTARTED AGAIN. CONTACTED MB ASSIST AND WAS TOLD I WOULD NEED A JUMP WITH THICK GAUGE CABLES AND THEY COULD SEND A TECH BUT THE CHARGES WOULD BE AT MINIMUM $100. ITS BEEN OVER A WEEK AND THE CAR WILL NOT START. I'VE PUT BATTERIES IN FOB (THEY NEVER HAD ANY BEFORE) , CHARGED CAR BATTERY , CHECKED ALL FUSES, JUMPED CAR BATTERY AND NOW AM BEING GIVEN A P1570 IMMOBILIZER CODE . THE CAR ALARM HAS NEVER BEEN ACTIVATED. . THIS CAR IS MAKING ABSOLUTE NO SENSE WITH THE ERRORS AND NO EXPLANATION AS TO WHY IT NEARLY CAUGHT FIRE AND WONT START NOW...
NHTSA complaint #10458187 — an unverified report by a vehicle owner.
ELECTRICAL SYSTEM
SEAT CONTROL MODULE FAILURE. 2 MODULES PER CAR, 1 FOR PASSENGER SEAT, AND 1 FOR DRIVER SEAT FAIL. THE DEFECTIVE SEAT CONTROL MODULE UNIT WILL DEPLETE THE CARS BATTERY OVERNIGHT RESULTING IN A NO-START CONDITION THE FOLLOWING DAY. A NEW BATTERY, OR A JUMP START, WILL GET THE CAR GOING AGAIN. THE COMMON IMMEDIATE RESOLUTION IS TO UNPLUG THE SEAT CONTROL MODULE WHICH WOULD IMPACT THE SEATS ABILITY TO RESPOND IN AN ACCIDENT. THE REPLACEMENT PART AND DIAGNOSIS FROM MB DEALER IS APPROX $700/ MODULE. THIS IS A HUGE LIABILITY FOR MERCEDES OWNERS AND THE REPAIR SHOULD BE INVESTIGATED FOR SEAT FUNCTION SAFETY. I UNDERSTAND THE PART NUMBER HAS BEEN UPDATED, WHICH I BELIEVE IS AN ADMISSION BY MERCEDES THAT THE ORIGINAL PART IS DEFECTIVE.
NHTSA complaint #10442578 — an unverified report by a vehicle owner.
ELECTRICAL SYSTEM
FIRE AND SPARKS CAUSED BY MERCEDES ENGINE WIRE HARNESS! THE ENGINE WIRE HARNESS WAS POORLY MADE, AND WAS INSULATED BELOW STANDARD. I JUST FOUND OUT THIS IS A COMMON PROBLEM WITH MERCEDES .THEY SHOULD RECALL ALL THEIR VEHICLES FOR SAFETY! MERCEDES VEHICLE NOT SAFE IF THEY DO NOT CORRECT THIS HUGE PROBLEM!
NHTSA complaint #10415440 — an unverified report by a vehicle owner.
ELECTRICAL SYSTEM
1996 MERCEDES C220; ELECTRICAL HARNESS PROBLEMS; ENGINE WILL TURN OVER BUT WILL NOT START; SOMETIMES THE CAR WILL START AND RUN, THEN WILL CUT OFF WHEN SLOWING UP AT A STOP OR WHEN PUTTING INTO REVERSE. SEVERAL MECHANICS SAY THAT THE MERCEDES COMPANY ALLOWED INFERIOR WIRING TO BE USED BUT WILL NOT STAND BEHIND THE PRODUCT. THIS IS NOT SAFE AND A RECALL SHOULD HAVE BEEN ISSUED OR DEALERS SHOULD PAY FOR THE REPLACEMENT OF THE WIRING.
NHTSA complaint #10404400 — an unverified report by a vehicle owner.
ELECTRICAL SYSTEM
MERCEDES BENZ C240 ECU FAILURE. ALSO THE TRANSMISSION SHIFTS ARE SOMETIMES RANDOM AT BEST AND SOMETIMES SHUTS OFF. THE CARS INSTRUMENT CLUSTER ALSO SOMETIMES DOESN'T WORK, THE POWER STEERING LEAKS INTERMITTENTLY THE REAR COIL SPRING BROKE ON LEFT SIDE OF VEHICLE . THE ALTERNATOR WAS REPLACED SO WAS THE COIL PACK AND OTHER ITEMS BY MERCEDES BUT THEY ALWAYS TRIED TO JUSTIFY THAT PROBLEM WAS NORMAL WEAR AND TEAR WHICH IS NOT TRUE.
NHTSA complaint #10404244 — an unverified report by a vehicle owner.
ELECTRICAL SYSTEM
BATTERY DRAIN, SEEMS TO COME FROM DEFECT IN SEAT CONTROLLER MODULE. SEE 19 PAGES OF FORUM: HTTP://WWW.BENZWORLD.ORG/FORUMS/W203-C-CLASS/1196568-MERCEDES-C320-BATTERY-DRAIN-11.HTML MERCEDES C240 2001, BUT MANY OTHER MODELS AND YEARS AFFECTED.
NHTSA complaint #10366976 — an unverified report by a vehicle owner.
ELECTRICAL SYSTEM
MY WELL MAINTAINED '95 MERCEDES-BENZ C280 OF WHICH I AM THE SINGLE OWNER SINCE NEW HAS A DEFECTIVE WIRING HARNESS. THIS COULD HAVE BEEN A VERY BAD DISASTER AS THE CAR JUST LOST IT'S POWER TO DRIVE WHILE BEING DRIVEN...BY MY SON, WHO JUST CAME OFF OF I-95. HE MANAGED TO GET TO SAFER GROUND AND HAD TO BE TOWED. MECHANIC(NOT A MBENZ ONE) STATES NEVER SEEING ANYTHING LIKE IT AS THE WIRE COATING IS DISINTEGRATING INTO A POWDER LIKE SUBSTANCE AND BARING ALL METAL...CAUSED IT TO ARC WHEN FIRST LOOKING. THANK GOOD FORTUNE IT DIDN'T CATCH FIRE, EXPLODE OR CAUSE A BAD ACCIDENT. SO IF REPLACED BY MBENZ PART CAUSE IT CANNOT BE REPAIRED....WON'T THE SAME THING HAPPEN WITH IT?
NHTSA complaint #10357488 — an unverified report by a vehicle owner.
ELECTRICAL SYSTEM
COMPLETE WIRING HARNESS FAILURE ON 1995 MERCEDES C280, ONLY 60,000 MILES ON CAR.
NHTSA complaint #10353811 — an unverified report by a vehicle owner.
ELECTRICAL SYSTEM
MY CAR, 1995 MERCEDES C280, BACKFIRES, STUMBLES, LOSES POWER, AND SOMETIMES DIES WHILE DRIVING. I HAVE REPLACED THE PLUG WIRES, IGNITION COILS, SPARK PLUGS, FUEL PUMP, AND FILTER. I HAVE REPLACED THE OVERLOAD PROTECTION RELAY, THE FUEL PUMP RELAY, AND THE ENGINE COOLING FAN RELAY. THE BATTERY AND ALTERNATOR HAVE BEEN REPLACED. ALL OF THESE WERE DONE AFTER CONTACT WITH MERCEDES BENZ AND DEALERS IN BOTH FLORIDA AND TENNESSEE. THE WIRING HARNESS WAS REPLACED BEFORE I BOUGHT THE CAR AND IS IN GOOD CONDITION.
NHTSA complaint #10319649 — an unverified report by a vehicle owner.
ELECTRICAL SYSTEM
ENGINE WIRING HARNESS FAILURE ON 1995 C 220 MERCEDES - BENZ. HAD ALL ENGINE WIRING REPLACED AT A COST OF $500.00. HAVING SO MANY ELECTRICAL PROBLEMS CAUSED MANY PARTS TO BE CHANGED THAT DID NOT NEED TO BE CHANGED. THE CAR IS IN THE SHOP NOW FOR OVER 9 MONTHS BECAUSE MECHANIC CAN NOT FIGURE WHY CAR CONTINUE HAVING LOST OF POWER.BEFORE I FOUND OUT ABOUT THE BAD WIRING ON THIS C 220 BENZ,MY CAR WAS ALMOST HIT BY ANOTHER CAR WHILE TRYING TO CROSS A BUSY HIGHWAY. THIS COULD HAVE TRAGIC THANK GOD THEY SLOWED DOWN TO LET ME CROSS. THIS IS A VERY SERIOUS SAFETY SITUATION AND SOMETHING SHOULD BE DONE ABOUT IT ASAP BEFORE SOME GET SERIOUSLY HURT OR RECEIVE DEATH FORM THIS MAJOR PROBLEM. I'M OVER $4,000.00 IN THE HOLE AND STILL NO WORKING C220 MERCEDES BENZ YET!
NHTSA complaint #10318138 — an unverified report by a vehicle owner.
ELECTRICAL SYSTEM
MERCEDEZ BENZ C 240 YEAR 2001 HAS MANY DEFECTS THAT REQUIRED SEVERAL THOUSANDS OF DOLLARS . THE DEALERSHIP AND THE MANUFACTURER DID NOT PROVIDE ANY HELP.
NHTSA complaint #10303029 — an unverified report by a vehicle owner.
1995 Mercedes Benz C Class
Alexandria, VA
ELECTRICAL SYSTEM
I OWN A 1995 MERCEDES BENZ C280. THIS VEHICLE YEAR AND MODEL HAS A POSSIBLE CRITICAL ENGINE WIRING HARNESS PROBLEM WHERE THE INSULATION ON THE HARNESS DISINTEGRATES VERY QUICKLY. THIS DISINTEGRATION CAN CAUSE THE CAR TO STALL AND CATCH FIRE WHILE DRIVING. THERE ARE OF COURSE OTHER RELATED SEVERE PROBLEMS THAT CAN OCCUR SINCE THE WIRING HARNESS IS CRITICAL TO THE OPERATION OF THE VEHICLE. A FEW OF THE OTHER CRITICAL COMPONENTS AFFECTED ARE IGNITION, FUEL INJECTION, COOLING, TIMING, MIXTURES AND VARIOUS OTHER SYSTEMS/SENSORS OF THE CAR. AFTER SPEAKING TO THE MANUFACTURER (MB-USA IN NY), LOCAL DEALERS, OWNERS AND READING VARIOUS WEBSITES, I BELIEVE THAT MERCEDES BENZ IS AWARE OF THIS PROBLEM BUT WILL NOT ISSUE A VOLUNTARY RECALL. THE ONLY AVAILABLE REPAIR I AM AWARE OF IS TO REPLACE THE ENTIRE ENGINE WIRING HARNESS. SINCE THE DISINTEGRATION CAN OCCUR DUE TO THE NORMAL OPERATIONAL ENGINE HEAT IRREGARDLESS OF MILEAGE, IT IS MY UNDERSTANDING THAT THIS CAN HAPPEN AT ANY TIME. IT IS HIGHLY LIKELY THAT A AFFECTED CAR WITH HIGHER MILES IS MUCH MORE SUSCEPTIBLE TO THE FAILING OF THE WIRING HARNESS. THIS NATURALLY ALSO LEAVES DRIVERS AND PASSENGERS OF OLDER AFFECTED CARS MUCH MORE SUSCEPTIBLE TO THE DANGEROUS AND FATAL EFFECTS OF A ENGINE WIRING HARNESS FAILURE. I ASK THAT NHTSA INVESTIGATE THIS FURTHER AND ISSUE A RECALL ON BEHALF OF ALL OF THE OWNERS. I KNOW THAT MY CAR FALLS IN THE CATEGORY WHERE THE HARNESS IS POSSIBLY BAD, AND YOU ARE WELCOME TO CONTACT ME TO SEE THE CONDITION OF THE MY CAR'S ENGINE WIRING HARNESS. I HOPE AT THE LEAST YOU CAN SEEK A RESOLUTION FOR ME FROM THE MANUFACTURER IN REMEDYING A KNOWN ISSUE IN THE MODEL I OWN.
NHTSA complaint #10299650 — an unverified report by a vehicle owner.
ELECTRICAL SYSTEM
MERCEDES-BENZ ENGINE WIRING HARNESS DEFECT ENCLOSED, PLEASE FIND A LIST OF REPORTED COMPLAINTS THAT I FOUND ON YOUR VERY OWN NATIONAL HIGHWAY TRAFFIC SAFETY ADMINISTRATION (NHTSA) WEBSITE CONCERNING THE CHRONIC ENGINE COMPARTMENT WIRING HARNESS FAILURE SUFFERED BY (AT THE LEAST) 1992 THROUGH 1995 MERCEDES BENZ AUTOMOBILES. THIS LIST IS NOT, BY ANY MEANS, MEANT TO BE COMPLETE, AS IT ONLY LISTS THOSE REPORTS THAT I WAS ABLE TO LOCATE. NOTE THAT THE FIRST COMPLAINT ON THE LIST IS MINE. I AM OUTRAGED AT MERCEDES-BENZ' ARROGANT REFUSAL TO OWN UP TO, AND TAKE RESPONSIBILITY FOR, THIS EXTREMELY DANGEROUS DESIGN AND ENGINEERING DEFECT. FOR THE LIFE OF ME (LITERALLY), I CANNOT UNDERSTAND WHY NHTSA HAS NOT INVESTIGATED THIS DANGEROUS SITUATION, ESPECIALLY GIVEN THE LARGE NUMBER OF COMPLAINTS. I WILL NOT BE SATISFIED WITH LESS THAN MERCEDES' IMMEDIATE RECTIFICATION. I WAS ASKED BY MERCEDES BENZ DEALER OVER $4,000 TO FIX PROBLEM.
NHTSA complaint #10287295 — an unverified report by a vehicle owner.
ELECTRICAL SYSTEM
WHILE DRIVING ON THE HIGHWAY (NJ TURNPIKE, MY ENGINE BEGAN TO BECOME CHALLENGED TO ACCELERATE. AFTER A COUPLE OF MILES, I WAS NO LONGER ABLE TO ACCELERATE AT ALL. WITH NOWHERE TO PULL OVER I DROVE ACROSS THE BEN FRANKLIN BRIDGE AT 20 MPH. A FEW BLOCKS AFTER EXITING THE BRIDGE THE CAR SIMPLY FAILED. UPON RESEARCHING THIS ISSUE I DETERMINED THAT MANY MANY OTHER OWNERS OF MY SAME MODEL CAR HAD THE SAME EXACT ISSUE - THE ENGINE WIRING HARNESS INSULATION WAS SHOT AND NEEDED REPLACEMENT.
NHTSA complaint #10280785 — an unverified report by a vehicle owner.
ELECTRICAL SYSTEM
TL*THE CONTACT OWNS A 2000 MERCEDES BENZ C230. THE CONTACT STATED THAT THE INSTRUMENT PANEL GAUGES, SUCH AS THE SPEEDOMETER, WERE UNABLE TO BE READ, WHICH INCREASED THE RISK OF A CRASH. THE CONTACT WOULD HAVE TO PAY $1,500 TO REPLACE THE INSTRUMENT CLUSTER MODULES BECAUSE HIS VIN WAS EXCLUDED FROM NHTSA CAMPAIGN ID NUMBER 06V028000 (INTERIOR LIGHTING). THE VEHICLE HAS NOT YET BEEN REPAIRED. THE MANUFACTURER DID NOT ASSIST. THE FAILURE MILEAGE WAS 80,000 AND THE CURRENT MILEAGE WAS UNKNOWN.
NHTSA complaint #10261743 — an unverified report by a vehicle owner.
ELECTRICAL SYSTEM
2003 MERCEDES C240 STALLS IMMEDIATELY AFTER PROLONGED TURNPIKE TRAVEL ( 1.5 HOURS) AT EXIT RAMP TO AN ARTERIAL ROADWAY. THIS INCREASES REAREND ACCIDENT POTENTIAL. MERCEDES CHECKED VEHICLE BUT NO REPORT CODES INDICATED. SUGGESTED THAT IT MAY BE COMPUTER OF SENSOR RELATED. MERCEDES SUGGESTED PULLING OVER FOR 30 MIN. TO LET COMPUTER RESET. FIRST INCIDENT 12/17/08 SECOND INCIDENT 12/28/08.
NHTSA complaint #10253108 — an unverified report by a vehicle owner.
2002 Mercedes Benz C Class
Rittman, OH
ELECTRICAL SYSTEM
SEAT CONTROLLER MODULES, THEY CONSTANTLY DRAIN THE BATTERY WHEN THE CAR IS OFF. THIS IS A VERY VERY COMMON PROBLEM WITH MERCEDES C CLASS. THE CONTROLLER DRAINS THE CAR BATTERY TO THE POINT WERE THE CAR CANNOT START, AND CONTINUES TO DO THIS IF THE CAR IS NOT DRIVEN EVERYDAY. OBVIOUSLY HAVING A CAR BATTERY GET SUCKED BELOW 3V IS NOT HEALTHY FOR THE BATTERY, AND IN THE END EVERYONE WITH THIS PROBLEM HAS TO REPLACE THEIR BATTERY MANY MANY TIMES.
NHTSA complaint #10252301 — an unverified report by a vehicle owner.
ELECTRICAL SYSTEM
WIRING HARNESS ON MY 1995 MERCEDES-BENZ C36 HAS FAILED, CRACK AND DISINTEGRATED WIRE COVERINGS IN ENGINE COMPARTMENT.
NHTSA complaint #10250570 — an unverified report by a vehicle owner.