https://plaincars.com/make/mercedes-benz-300-series New NHTSA complaints and recalls filed for the Mercedes-Benz 300 Series. en-us Sun, 18 Oct 2026 08:39:14 GMT https://plaincars.com/make/mercedes-benz-300-series https://plaincars.com/make/mercedes-benz-300-series#complaint-1012894 Sun, 29 Sep 2013 00:00:00 GMT BATTERY GOES DEAD, REPLACED BATTERY, IT GOES DEAD. CHARGED BATTERY , IT GOES DEAD. *TR https://plaincars.com/make/mercedes-benz-300-series https://plaincars.com/make/mercedes-benz-300-series#complaint-953294 Tue, 11 Dec 2012 00:00:00 GMT THE GUY SOLD TO ME WITH IT NOT RUNNING HE SAID HE HAD THE WIRING HARNESS REPLACED AND IT STILL DON'T RUN 700 WAS SPENT I HAVE RECITE ITS A 1992 300SE THIS IS SICK THIS IS WHAT [XXX] TOLD HIM AND IT STILL DON'T RUN SO NOW WHAT? INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6). *TR https://plaincars.com/make/mercedes-benz-300-series https://plaincars.com/make/mercedes-benz-300-series#complaint-946293 Wed, 24 Oct 2012 00:00:00 GMT VEHICLE WIRING HARNESS BURNS AND SHORTS DUE TO INSULATION ON WIRING DEGRADING CAUSING FAILURE OF NUMEROUS ELECTRICAL COMPONENTS. UNSAFE TO DRIVE. *TR https://plaincars.com/make/mercedes-benz-300-series https://plaincars.com/make/mercedes-benz-300-series#complaint-931988 Fri, 03 Aug 2012 00:00:00 GMT I WAS GOING WEST ON VINEYARD AND 10TH ST, A CAR TRAVELING (65MPH) SOUTH ON 10TH ST HIT THE PASSENGER SIDE DOOR PUSHING THE CAR INTO A POLE DAMAGING THE LEFT FRONT END. *TR https://plaincars.com/make/mercedes-benz-300-series https://plaincars.com/make/mercedes-benz-300-series#complaint-931989 Fri, 03 Aug 2012 00:00:00 GMT I WAS GOING WEST ON VINEYARD AND 10TH ST, A CAR TRAVELING (65MPH) SOUTH ON 10TH ST HIT THE PASSENGER SIDE DOOR PUSHING THE CAR INTO A POLE DAMAGING THE LEFT FRONT END. *TR https://plaincars.com/make/mercedes-benz-300-series https://plaincars.com/make/mercedes-benz-300-series#complaint-931045 Sun, 29 Jul 2012 00:00:00 GMT WE DEPARTED FROM HOME AND DROVE AT THE LOCAL SPEED OF 45-55 MPH FOR APPROXIMATELY 4 MILES AND PROCEEDED TO ENTER THE FREEWAY. WE DROVE ON THE FREEWAY FOR APPROXIMATELY 10 MILES AT 65 MPH WHEN THE REAR PASSENGER SIDE TIRE SUDDENLY EXPLODED. THIS WAS WITHOUT WARNING AS THERE HAD BEEN NO SIGNS OR FEELING OF A FLAT TIRE. TIRES' PRESSURES ARE CHECKED PERIODICALLY, ABOUT ONCE EVERY MONTH. WE ALWAYS ENSU https://plaincars.com/make/mercedes-benz-300-series https://plaincars.com/make/mercedes-benz-300-series#complaint-879604 Wed, 14 Sep 2011 00:00:00 GMT ENGINE OF 1995 MERCEDES BENZ E320 STATION WAGON MISFIRED AND STALLED. INVESTIGATING THE PLUGS AND WIRING HARNESS FOUND THE HARNESS HAD DISINTEGRATED AND SHORTED OUT. *KB https://plaincars.com/make/mercedes-benz-300-series https://plaincars.com/make/mercedes-benz-300-series#complaint-879605 Wed, 14 Sep 2011 00:00:00 GMT ENGINE OF 1995 MERCEDES BENZ E320 STATION WAGON MISFIRED AND STALLED. INVESTIGATING THE PLUGS AND WIRING HARNESS FOUND THE HARNESS HAD DISINTEGRATED AND SHORTED OUT. *KB https://plaincars.com/make/mercedes-benz-300-series https://plaincars.com/make/mercedes-benz-300-series#complaint-879606 Wed, 14 Sep 2011 00:00:00 GMT ENGINE OF 1995 MERCEDES BENZ E320 STATION WAGON MISFIRED AND STALLED. INVESTIGATING THE PLUGS AND WIRING HARNESS FOUND THE HARNESS HAD DISINTEGRATED AND SHORTED OUT. *KB https://plaincars.com/make/mercedes-benz-300-series https://plaincars.com/make/mercedes-benz-300-series#complaint-858960 Sun, 29 May 2011 00:00:00 GMT I HAVE TWO MERCEDES BENZ W124 CARS. BOTH CARS HAVE HAD THE WIRING HARNESS FAILURE AND THAT DESTROYED MANY VERY EXPENSIVE ELECTRONIC COMPONENTS ON THE CARS. 1993 300E 4 DOOR SEDAN, WIRING HARNESS FAILURE AND DESTROY MANY THINGS VERY EXPENSIVE ON THE CAR 1995 E320 CABRIOLET RARE COLLECTORS CONVERTIBLE MADE IN 1994 AND 1995 ONLY! PLEASE SEND ME TWO FORMS TO FILL OUT. *TR https://plaincars.com/make/mercedes-benz-300-series https://plaincars.com/make/mercedes-benz-300-series#complaint-858961 Sun, 29 May 2011 00:00:00 GMT I HAVE TWO MERCEDES BENZ W124 CARS. BOTH CARS HAVE HAD THE WIRING HARNESS FAILURE AND THAT DESTROYED MANY VERY EXPENSIVE ELECTRONIC COMPONENTS ON THE CARS. 1993 300E 4 DOOR SEDAN, WIRING HARNESS FAILURE AND DESTROY MANY THINGS VERY EXPENSIVE ON THE CAR 1995 E320 CABRIOLET RARE COLLECTORS CONVERTIBLE MADE IN 1994 AND 1995 ONLY! PLEASE SEND ME TWO FORMS TO FILL OUT. *TR https://plaincars.com/make/mercedes-benz-300-series https://plaincars.com/make/mercedes-benz-300-series#complaint-858059 Mon, 23 May 2011 00:00:00 GMT I HAVE A 1993 MERCEDES BENZ 300E AND THE WIRING HARNESS HAS BROKEN DOWN. THE INSULATION ON THE WIRES HAS COMPLETELY DISINTEGRATED TO THE POINT WHERE THE WIRES ARE TOUCHING EACH OTHER. THIS IN TURN MAKE THE ENGINE RUN POORLY AND REPLACING THE WIRING HARNESS IS THE ONLY OPTION. THIS AT A COST OF OVER $1200 FOR PARTS AND PROBABLY $1000 IN LABOR. *TR https://plaincars.com/make/mercedes-benz-300-series https://plaincars.com/make/mercedes-benz-300-series#complaint-851461 Wed, 13 Apr 2011 00:00:00 GMT 300E ENGINE WIRING HARNESS DEGRADING, FLAKING INSULATION, SHORTING WIRES FOR ALL SYSTEMS, MULTIPLE PROBLEMS. RACING IDLE, UNCONTROLLABLE ACCELERATION, STALLING, CHECK ENGINE LIGHTS COMING ON AND OFF. REPLACED THOUSANDS $$ IN PARTS ONLY TO FIND IT IS A WELL SAFETY PROBLEM THAT NO-ONE, INCLUDING THE NHTSA HAS THE COURAGE TO ADDRESS. CAR IS NOT DRIVABLE AND REQUIRE OVER $3,000 TO REPLACE THE ENGINE https://plaincars.com/make/mercedes-benz-300-series https://plaincars.com/make/mercedes-benz-300-series#complaint-851301 Tue, 12 Apr 2011 00:00:00 GMT 1993 300E EXPERIENCED MULTIPLE INTERMITTENT CHECK ENGINE CODE FAILURES, RACING AT IDLE, STALLING, ALL OF WHICH RESULTED IN COSTLY REPAIRS INCLUDING REPLACEMENT OF MAF , 02 SENSOR, HOT AIR FLOW SENSOR, OVER VOLTAGE RELAY, SEVERAL BLOWN FUSES, IGNITION COILS, CLIMATE CONTROL AMPLIFIER. I CANNOT TELL YOU HOW MANY PARTS I HAVE REPLACED.. CAR INTERMITTENTLY DIES OR RACES IDLE ON FREEWAY WITH NO WARNI https://plaincars.com/make/mercedes-benz-300-series https://plaincars.com/make/mercedes-benz-300-series#complaint-848199 Tue, 22 Mar 2011 00:00:00 GMT AFTER A MAJOR SERVICE TO THE VEHICLE, DURING WHICH THE WATER PUMP WAS REPLACED, A NUMBER OF PROBLEMS WITH THE VEHICLE BEGAN TO EMERGE. ONE SIGNIFICANT ISSUE WAS THAT THE VEHICLE WOULD HAVE SUDDEN LOSS OF POWER. ON ONE OCCASSION, WHILE DRIVING AT HIGHWAY SPEEDS, THE VEHICLE LOSS COMPLETE POWER AND I HAD TO REACT QUICKLY TO PULL OFF THE HIGHWAY TO SAFETY. AFTER THE ENGINE COOLED DOWN SLIGHTLY, THE https://plaincars.com/make/mercedes-benz-300-series https://plaincars.com/make/mercedes-benz-300-series#complaint-848200 Tue, 22 Mar 2011 00:00:00 GMT AFTER A MAJOR SERVICE TO THE VEHICLE, DURING WHICH THE WATER PUMP WAS REPLACED, A NUMBER OF PROBLEMS WITH THE VEHICLE BEGAN TO EMERGE. ONE SIGNIFICANT ISSUE WAS THAT THE VEHICLE WOULD HAVE SUDDEN LOSS OF POWER. ON ONE OCCASSION, WHILE DRIVING AT HIGHWAY SPEEDS, THE VEHICLE LOSS COMPLETE POWER AND I HAD TO REACT QUICKLY TO PULL OFF THE HIGHWAY TO SAFETY. AFTER THE ENGINE COOLED DOWN SLIGHTLY, THE https://plaincars.com/make/mercedes-benz-300-series https://plaincars.com/make/mercedes-benz-300-series#complaint-744870 Thu, 19 Nov 2009 00:00:00 GMT I OWN A MERCEDES 300CE WHICH HAS GIVEN ME PROBLEMS WITH OVER ACCELERATION, IDLING ISSUES AND ELECTRICAL PROBLEMS. I LIKE MANY OTHER PEOPLE COULD NOT AFFORD A NEW CAR SO I DECIDED TO TAKE IT IN FOR REPAIRS. I STARTED WITH REPLACING THE ENGINE WIRING HARNESS IN 2007 DUE TO THE ENGINE LIGHT CONSISTENTLY TURNING ON. AT AROUND THE SAME TIME, THE STARTER GAVE UP AS WELL AS THE TRANSMISSION. I ALSO H https://plaincars.com/make/mercedes-benz-300-series https://plaincars.com/make/mercedes-benz-300-series#complaint-720536 Mon, 18 May 2009 00:00:00 GMT 1992 MERCEDES BENZ 300SE THE ISSUE IS FROM THE RESULTS OF A DRYROTTED ENGINE WIRING HARNESS. DURING THE TIME PERIOD THIS CAR WAS MANUFACTURED MERCEDES BENZ USED A BIODEGRATABLE MATERIAL FOR THE WIRE COVERINGS. THIS MATERIAL THROUGH THE YEARS COULD NOT WITHSTAND THE HEAT PRODUCED BY THE ENGINE UNDER THE HOOD. THIS IS A PROBLEM THAT MERCEDES KNOW ABOUT AND HAS SINCE CHANGED THE WIRING HARNESS COV https://plaincars.com/make/mercedes-benz-300-series https://plaincars.com/make/mercedes-benz-300-series#complaint-719368 Fri, 08 May 2009 00:00:00 GMT TL*THE CONTACT OWNS A 1992 MERCEDES BENZ 300SE. THE CONTACT NOTICED THAT THE VEHICLE WAS NOT IDLING PROPERLY. THE VEHICLE WOULD STALL WHILE AT A STOP SIGN AND COMPLETELY SHUT OFF. THE VEHICLE WAS ABLE TO BE RESTARTED IMMEDIATELY. THE DEALER STATED THAT THE ENGINE WIRING HARNESS WAS FAULTY. THE MECHANIC SUGGESTED THAT HE NOTIFY THE MANUFACTURER, BUT THEY CLAIMED TO NEVER HAVE HEARD OF THE FAIL https://plaincars.com/make/mercedes-benz-300-series https://plaincars.com/make/mercedes-benz-300-series#complaint-719369 Fri, 08 May 2009 00:00:00 GMT TL*THE CONTACT OWNS A 1992 MERCEDES BENZ 300SE. THE CONTACT NOTICED THAT THE VEHICLE WAS NOT IDLING PROPERLY. THE VEHICLE WOULD STALL WHILE AT A STOP SIGN AND COMPLETELY SHUT OFF. THE VEHICLE WAS ABLE TO BE RESTARTED IMMEDIATELY. THE DEALER STATED THAT THE ENGINE WIRING HARNESS WAS FAULTY. THE MECHANIC SUGGESTED THAT HE NOTIFY THE MANUFACTURER, BUT THEY CLAIMED TO NEVER HAVE HEARD OF THE FAIL https://plaincars.com/make/mercedes-benz-300-series https://plaincars.com/make/mercedes-benz-300-series#complaint-709874 Wed, 25 Feb 2009 00:00:00 GMT ELECTRICAL WIRING HARNESS OF THE 1992 W140 MERCEDES BENZ 300SD SHORTED OUT AND CAUSE A FIRE INSIDE MY VEHICLE. I SHUT OF THE POWER SOURCE AND NOW MY CAR IS WORTHLESS SINCE THE WIRING IS BAD. *TR https://plaincars.com/make/mercedes-benz-300-series https://plaincars.com/make/mercedes-benz-300-series#complaint-693980 Sun, 26 Oct 2008 00:00:00 GMT 1995 MERCEDES BENZ, E-300D EVENTS LEADING UP TO THE FAILURE: NONE, NORMAL USE OF THE VEHICLE THE FAILURE, HOW OFTEN IT OCCURS, ITS CONSEQUENCES: WIRING AND GLOW PLUG HARNESS FAILURE, CAUSED BY BAD INSULATION ON THE WIRES THE INSULATION ON BOTH HARNESSES WAS PEELING/COMING OFF EXPOSING BARE COPPER WIRE, CAUSING SHORTS AND HARD COLD STARTS. I CALLED MERCEDES BENZ DIRECT AND THEY "HAVE NO KNOW https://plaincars.com/make/mercedes-benz-300-series https://plaincars.com/make/mercedes-benz-300-series#complaint-678125 Mon, 14 Jul 2008 00:00:00 GMT CAR STARTED RUNNING ROUGH,AND SMELLING LIKE SOMETHING WAS BURNING. *TR https://plaincars.com/make/mercedes-benz-300-series https://plaincars.com/make/mercedes-benz-300-series#complaint-672307 Tue, 03 Jun 2008 00:00:00 GMT VEHICLE NOT OPERATING PROPERLY, BLOWING FUSES, WARNING LIGHTS COMING ON, ENGINE COOLING FAN NOT OPERATING PROPERLY, AND ENGINE OVERHEATING. INSPECTION REVEALED THAT THE INSULATION IS SEVERELY DETERIORATED ON THE ENGINE WIRE HARNESS (MERCEDES BENZ PART NUMBER 124-440-32-32). THE INSULATION ON ALMOST ALL OF THE WIRES IN THE ENGINE COMPARTMENT HAS BECOME BRITTLE AND CRACKED OPEN AND LARGE PORTIONS OF https://plaincars.com/make/mercedes-benz-300-series https://plaincars.com/make/mercedes-benz-300-series#complaint-668283 Sun, 04 May 2008 00:00:00 GMT 1995 MERCEDES-BENZ E300D WIRING HARNESS: TEMPERATURE READING NOT ACCURATE, THOUGH ON THE HIGH SIDE SO I FEEL LIKE THE CAR IS OVERHEATING BUT REALLY NOT ENGINE IDLE SENSOR INACCURATE LEADING TO READING OF LOW RPM AT IDLE AND TACHOMETER NOT ALWAYS WORKING OTHER CONSEQUENCES: AUXILIARY FANS MOTORS BLOWN DUE TO FANS RUNNING AT HIGH SPEED ALWAYS INSTEAD OF VARIABLE AND INTERMITTENT. I TOOK THE https://plaincars.com/make/mercedes-benz-300-series https://plaincars.com/make/mercedes-benz-300-series#complaint-661313 Thu, 13 Mar 2008 00:00:00 GMT THE ENGINE WIRING HARNESS AND EA/CC/ISC WIRING INSULATION HAS BADLY DETERIORATED ON MY 1995 E300 DUE TO HEAT FATIGUE FROM POOR MANUFACTURING. THE DECAY HAS REACHED THE POINT OF LEAVING BARE EXPOSED WIRE WITHIN THE HARNESS. THESE WIRES MAKE CONTACT CAUSING THE ENGINE TO STALL, SURGE, A/C COMPRESSOR NOT TO WORK, AND SET MISC. ENGINE CODES. THIS IS A KNOWN PROBLEM TO OWNERS OF THESE VEHICLES AS EVID https://plaincars.com/make/mercedes-benz-300-series https://plaincars.com/make/mercedes-benz-300-series#complaint-653372 Mon, 14 Jan 2008 00:00:00 GMT MY 1993 MERCEDES 300E WAS RUNNING POORLY. I HAVE FOUND NUMEROUS AREAS IN THE ENGINE COMPARTMENT WHERE INSULATION WAS CRACKING ON THE WIRING HARNESS AND THE COPPER WIRE WAS EXPOSED ALLOWING THE CONDUCTORS TO SHORT. THE VEHICLE IS NOT DRIVABLE. *TR https://plaincars.com/make/mercedes-benz-300-series https://plaincars.com/make/mercedes-benz-300-series#complaint-652814 Wed, 09 Jan 2008 00:00:00 GMT ENTIRE WIRING HARNESS WIRING INSULATION UNDER HOOD IS DETERIORATED, CRACKED, TURNED TO POWDER AND IS FALLING OFF COPPER WIRES. GLOW PLUG WIRING HAS CRACKED AND EXPOSED COPPER CAUSING MALFUNCTION TO GLOW PLUG RELAY. AMBIENT TEMPERATURE WIRING FAILED. *TR https://plaincars.com/make/mercedes-benz-300-series https://plaincars.com/make/mercedes-benz-300-series#complaint-652815 Wed, 09 Jan 2008 00:00:00 GMT ENTIRE WIRING HARNESS WIRING INSULATION UNDER HOOD IS DETERIORATED, CRACKED, TURNED TO POWDER AND IS FALLING OFF COPPER WIRES. GLOW PLUG WIRING HAS CRACKED AND EXPOSED COPPER CAUSING MALFUNCTION TO GLOW PLUG RELAY. AMBIENT TEMPERATURE WIRING FAILED. *TR https://plaincars.com/make/mercedes-benz-300-series https://plaincars.com/make/mercedes-benz-300-series#complaint-652741 Tue, 08 Jan 2008 00:00:00 GMT MY 1993 MERCEDES 300E EXPERIENCED SOME MAJOR PROBLEMS WITH ITS WIRING IN THE HARNESS. AS A RESULT, I HAD IT TAKEN INTO A MECHANIC, WHO NOTICED THAT THE INSULATION ON THE FUEL INJECTION WIRING HARNESS DETERIORATED AND CAUSED THE WIRES TO RUB TOGETHER. IT APPEARS THAT THIS ENGINE WIRING HARNESS PROBLEM HAS BEEN AN ONGOING ISSUE WITH MANY MERCEDES (ESPECIALLY THE MODELS FROM THE 90'S), AND I AM SURPR