NHTSA owner reports · September 18, 2026 snapshot.
Electrical System complaints
15 reportsClear category filter150,000 miles · Jun 19, 2013
Electrical SystemEngineFire
WIRING HARNESS HAS SAME PROBLEM AS NOTED BY OTHER OWNERS-STARTED WITH WIRING TO MAS MELTING. I REWIRED THAT-DROVE CAR ANOTHER YEAR WITH SMALL ELECTRICAL PROBLEMS BLOWING FUSES WITHOUT FINDING CAUSE-DROVE CAR TO WORK ONE DAY,RAN FINE,CAME OUT TO GO HOME AND IT HAD A MISS. REMOVED COVER OVER INJECTORS AND FOUND ALL THE WIRING WAS …
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WIRING HARNESS HAS SAME PROBLEM AS NOTED BY OTHER OWNERS-STARTED WITH WIRING TO MAS MELTING. I REWIRED THAT-DROVE CAR ANOTHER YEAR WITH SMALL ELECTRICAL PROBLEMS BLOWING FUSES WITHOUT FINDING CAUSE-DROVE CAR TO WORK ONE DAY,RAN FINE,CAME OUT TO GO HOME AND IT HAD A MISS. REMOVED COVER OVER INJECTORS AND FOUND ALL THE WIRING WAS BARE.THIS IS A COMMON PROBLEM WITH MBS AND THEY SHOULD HAVE A RECALL. *TR
NHTSA ODI #10520698
180,000 miles · Jul 5, 2012
Electrical System
I HAVE MULTIPLE WIRING PROBLEMS WITH THIS CAR. FAULTY TACHOMETER GOES ON AND OFF BY IT SELF. FAULTY AC WIRES ISOLATION IS DESTROYED, FAULTY GLOW PLUG LIGHT GOES ON AND OFF BY IT SELF. THIS CAR HAS WIRING PROBLEMS LIKE MANY OTHER W124. *TR
NHTSA ODI #10464333
140,000 miles · Nov 7, 2009
Electrical System
ENGINE HARNESS AND ALTERNATOR HARNESS. ALTERNATOR HARNESS OVERHEATED DUE TO INSULATION ON WIRES COMPLETELY DISINTEGRATED. HARNESS WAS REPLACED BY EUROPEAN SERVICE AND TRANSMISSION, IN CUMMINGS, GEORGIA ON OCTOBER 22ND 2009. *TR
NHTSA ODI #10291334
229,000 miles · Apr 28, 2009
Electrical SystemEngine And Engine CoolingTraction Control System
MAIN AND AUXILIARY WIRING HARNESSES PLASTIC WIRE COATING IS CRUMBLING OFF LEAVING THE COPPER WIRES EXPOSED AND PRONE TO SHORTS..MY VEHICLE GAUGES FOR THE ENGINE TEMPERATURE, ABS, AIR BAGS, TRACTION, AND THE LESSER IMPORTANT GAUGES ARE WORKING ERRATICALLY OR NOT AT ALL. MERCEDES USA DOES NOT ACKNOWLEDGE ANY WIRING RELATED PROBLE…
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MAIN AND AUXILIARY WIRING HARNESSES PLASTIC WIRE COATING IS CRUMBLING OFF LEAVING THE COPPER WIRES EXPOSED AND PRONE TO SHORTS..MY VEHICLE GAUGES FOR THE ENGINE TEMPERATURE, ABS, AIR BAGS, TRACTION, AND THE LESSER IMPORTANT GAUGES ARE WORKING ERRATICALLY OR NOT AT ALL. MERCEDES USA DOES NOT ACKNOWLEDGE ANY WIRING RELATED PROBLEMS (OR ANY OTHER PROBLEMS) FOR THE E SERIES 124 TYPE BODY VEHICLES BUT IT HAS AN AMPLE SUPPLY OF NEW AND IMPROVED HARNESSES THAT VARY IN PRICE FROM A FEW HUNDRED DOLLARS TO THE THOUSANDS. *TR
NHTSA ODI #10267079
203,433 miles · Apr 6, 2009
Electrical System
WHEN I WAS DRIVING MY CAR I SMELT PLASTIC BURNING. I STOPPED THE CAR AND OPENED THE HOOD. I SAW SMOKE COMING OUT FROM THE END CLOSE TO THE DASH. TOOK THE CAR TO SHOP. THEY TOLD ME THAT ENGINE WIRING HARNESS WAS BURNED, BECAUSE OF INSULATION COVER FOR WIRING. WHEN I START TO INVESTIGATE FOR THE PART,THEY TOLD ME THAT IS A COMMON …
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WHEN I WAS DRIVING MY CAR I SMELT PLASTIC BURNING. I STOPPED THE CAR AND OPENED THE HOOD. I SAW SMOKE COMING OUT FROM THE END CLOSE TO THE DASH. TOOK THE CAR TO SHOP. THEY TOLD ME THAT ENGINE WIRING HARNESS WAS BURNED, BECAUSE OF INSULATION COVER FOR WIRING. WHEN I START TO INVESTIGATE FOR THE PART,THEY TOLD ME THAT IS A COMMON PROBLEM FOR MERCEDES BENZ E 320 CLASS. I CHECK WITH INTERNET, MERCEDES BENZ CLUB I FOUND OUT THAT IT WAS RECALL FOR 1992-1995 E CLASS, FOR:ELECTRICAL SYSTEM WIRING.WITH CAMPAIGN#95V031000. WHEN I CALLED MERCEDES BENZ U.S.A(1-800-367-6372. EXT:4620 AND EXT:7810 ). PERSON AT EXT:7810 TOLD ME THAT THERE IS NO SUCH RECALL WITH CAMPAIGN# EXIST AND NHTSA OFFICE, GAVE ME A WRONG INFORMATION AND COMPLETELY FALSE. AND WHAT I GOT FROM THERE CUSTOMER SERVICE DEPARTMENT ,THEY COMPLETELY DENY IF THERE IS ANY RECALL ISSUED AND JUST WISHED ME LUCK ! *TR
NHTSA ODI #10264268
155,104 miles · Oct 19, 2008
Electrical System
THE WIRE HARNESS IS CRACKED. A/C COMPRESSOR STOPPED, AND THAT MADE RELAYS BLEW OUT. *TR
NHTSA ODI #10246053
243,155 miles · Apr 7, 2008
Electrical System
MY CAR EXPERIENCES HARD STARTS, ROUGH IDLING, POOR GEAR SHIFTING (AUTOMATIC), AND RANDOM STALLING IN POTENTIALLY DANGEROUS ROADWAY ENVIRONMENTS. AFTER SYSTEMATICALLY TESTING AND ELIMINATING THE VEHICLES OTHER EQUIPMENT AS THE SOURCE, IT IS INCREDIBLY OBVIOUS THAT A DEFECTIVE WIRING HARNESS IS TO BLAME. WHAT MERCEDES HAS LAMELY …
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MY CAR EXPERIENCES HARD STARTS, ROUGH IDLING, POOR GEAR SHIFTING (AUTOMATIC), AND RANDOM STALLING IN POTENTIALLY DANGEROUS ROADWAY ENVIRONMENTS. AFTER SYSTEMATICALLY TESTING AND ELIMINATING THE VEHICLES OTHER EQUIPMENT AS THE SOURCE, IT IS INCREDIBLY OBVIOUS THAT A DEFECTIVE WIRING HARNESS IS TO BLAME. WHAT MERCEDES HAS LAMELY DESCRIBED AS "ENVIRONMENTALLY FRIENDLY" WIRE INSULATION IS REALLY A LIFE THREATENING DEFECT THAT LEAVES BARE WIRES EXPOSED THAT HAVE THE POTENTIAL TO CREATE POTENTIAL ELECTRICAL SHORTS, VEHICLE DAMAGE, FIRES, ACCIDENTS, AND MOST IMPORTANTLY, PERSONAL INJURY AND DEATH. DOES THAT SOUND ENVIRONMENTALLY FRIENDLY? IT IS EXTREMELY DIFFICULT TO TELL WHEN THE ENGINE WIRING HARNESS WILL FAIL BEFORE IT ACTUALLY BECOMES DANGEROUS. WE ARE ALL VERY LUCKY THAT THIS HASN'T KILLED OR SERIOUSLY INJURED ANYONE YET. THIS DANGEROUS COMPONENT SHOULD BE RECALLED IMMEDIATELY, BEFORE IT'S TOO LATE. *TR
NHTSA ODI #10223640
147,600 miles · Jan 7, 2008
Electrical System
WIRING HARNESS CRACKING, FLAKING OFF AND CRUMBLING. ENGINE TEMP SENDERS, GLOW PLUG WIRING, EGR AND OTHER UNIDENTIFIABLE WIRING IN ENGINE COMPARTMENT DEFECTIVE. SP FAR HAVE REPLACED SEVERAL EASY TO REACH WIRES. *TR
NHTSA ODI #10214118
112,153 miles · Aug 21, 2007
Electrical System
NOTICEABLE HESITATION AND ROUGH IDLE ON MY MERCEDES E320 1994 WAGON. MY MECHANIC TELLS ME THE ELECTRICAL HARNESS IS CRUMBLING AND WAS WELL KNOW FOR CARS 1991-1996 FOR THIS MODEL AND DEALERS HAVE HAD THE KNOWLEDGE FOR SEVERAL YEARS. THIS PART WILL NEED REPLACING AT A COST OF APPROX. $1600.00 AND I DON'T UNDERSTAND HOW I WAS NEVER…
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NOTICEABLE HESITATION AND ROUGH IDLE ON MY MERCEDES E320 1994 WAGON. MY MECHANIC TELLS ME THE ELECTRICAL HARNESS IS CRUMBLING AND WAS WELL KNOW FOR CARS 1991-1996 FOR THIS MODEL AND DEALERS HAVE HAD THE KNOWLEDGE FOR SEVERAL YEARS. THIS PART WILL NEED REPLACING AT A COST OF APPROX. $1600.00 AND I DON'T UNDERSTAND HOW I WAS NEVER NOTIFIED OF A RECALL SINCE I PURCHASED THE CAR NEW IN 1995. *TR THE CONSUMER STATED THE HARNESS IS AVAILABLE FOR INSPECTION. THE CONSUMER PROVIDED THE REPAIR INVOICE. UPDATED 09/05/07 *TR
NHTSA ODI #10200354
130,350 miles · Mar 25, 2007
Electrical System
TWO REPUTABLE INDEPENDENT MERCEDES MECHANICS INFORMED ME THAT THE ENGINE WIRING HARNESS INSULATION IN MY 1995 E300 DIESEL IS DECAYING WHICH MAY HAVE CAUSED MY GLOW PLUGS TO MALFUNCTION AND THIS PROBLEM IS PREVALENT IN MERCEDES VEHICLES MADE FROM 1991-1996. THERE SHOULD BE A RECALL ISSUED FOR THIS PART BEFORE MORE SERIOUS EVENTS …
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TWO REPUTABLE INDEPENDENT MERCEDES MECHANICS INFORMED ME THAT THE ENGINE WIRING HARNESS INSULATION IN MY 1995 E300 DIESEL IS DECAYING WHICH MAY HAVE CAUSED MY GLOW PLUGS TO MALFUNCTION AND THIS PROBLEM IS PREVALENT IN MERCEDES VEHICLES MADE FROM 1991-1996. THERE SHOULD BE A RECALL ISSUED FOR THIS PART BEFORE MORE SERIOUS EVENTS OCCUR DUE TO THE FLAW IN MERCEDES MANUFACTURING PROCESS FROM 1991-1996 . *AK
NHTSA ODI #10186106