1993 MERCEDES-BENZ 300

THE ENGINE HARNESS PROBLEM AFTER OWNING MY CAR SINCE 1993. IT IS CLEAR THAT THE ENGINE HARNESS WAS MADE WITH BIODEGRADABLE MATERIAL WHICH HAS NOW LOST IT'S PLASTIC COVERING OVER THE METAL WIRES. WITH WIRES EXPOSED AFTER THE ENGINE HARNESS DEGRATION, THE CAR WHICH WAS SUPPOSED TO LAST ME FOR A LONG TIME, HAS BECOME IMPOSSIBLE TO USE. WITHOUT THE PROPER HARNESS REPLACEMENT, THE CAR IS TOTALLY USELESS. UPON CHECKING INTO THIS PROBLEM I HAVE FOUND OUT THAT EVERY E300 BUILT BETWEEN 1992 AND 1997 IS BUILT WITH THE SAME HARNESS. ALL THESE CARS THAT ARE STILL ON THE ROAD ARE HAVING THE SAME ISSUE. I AM TOLD THIS IS A MAJOR FIRE HAZARD, THEREFORE I HAVE STOPPED USING MY CAR. THIS PROBLEM SOONER OR LATER WILL HURT SOMEONE UNTIL MERCEDES RECALLS AND REPLACES THE HARNESS FOR THE CARS THAT THEY HAVE ON THE ROAD. *TR

Mileage: 71,000

MY WIRING HARNESS HAS FAILED ON MY 1993 300E MERCEDES BENZ THE INSULATION COME OFF WIRING. *KB

MY WIRING HARNESS HAS FAILED ON MY 1993 300E MERCEDES BENZ THE INSULATION COME OFF WIRING. *KB

MY RESEARCH INDICATE THAT THIS ENGINE WIRING HARNESS PROBLEM IS AN ONGOING ISSUE FOR MANY MERCEDES BENZ, 300 E, AND 300SE CARS WITH THE TWIN CAM ENGINES MADE BETWEEN THE YEARS OF 1993-1995. NOT ONLY I AM UNABLE TO HAVE ROUTINE MAINTENANCE DONE, BUT I AM TOLD BY THE REPAIR FACILITY THAT THIS PRESENTS A SAFETY PROBLEM, BECAUSE THERE IS A RISK OF FIRE ASSOCIATED WITH THIS DEFECT. *TT

Mileage: 37,854

DURING NORMAL OPERATION OF MY VEHICLE, THE VEHICLE BEGAN TO ACT ERRATICALLY. AT START, THE VEHICLE WOULD NOT NORMALLY IDLE; INSTEAD IT LURCHED BETWEEN 500-1500 RPM. DURING OPERATION, AT A RANDOM POINTS, THE VEHICLE WOULD NOT RESPOND TO PRESSING THE GAS, INSTEAD SURGING POWER UNTIL I STOP AND IDLE FOR A MINUTE. IT TURNS OUT THAT THE PROBLEM IS ATTRIBUTABLE TO THE WIRING HARNESS, WHICH IS DISINTEGRATING. THIS WELL-KNOWN PROBLEM IS ATTRIBUTABLE TO THE USE OF INFERIOR MATERIALS BY MERCEDES-BENZ WHICH ARE NOT SUITABLE FOR USE IN HIGH-TEMPERATURE ENVIRONMENTS. RECENTLY, THE PROBLEM HAS GOTTEN WORSE; TODAY, THE VEHICLE DOES NOT ACHIEVE ANY GOOD ACCELERATION NOR IS IT VERY RESPONSIVE WHEN THE GAS PEDAL IS PRESSED. OPERATION OF THE VEHICLE IS SERIOUSLY IMPAIRED AT THIS TIME. SO FAR, THIS PROBLEM HAS NECESSITATED THE REPLACEMENT OF A BATTERY. I'VE BEEN ADVISED THAT THE COST TO REPAIR THIS PROBLEM WILL BE UPWARDS OF $2,000 DUE TO THE COST OF THE REPLACEMENT HARNESS, A PART WHICH IS NORMAL

Mileage: 127,000

1. BURNING SMELL 2. POOR RUNNING FAST IDLE TO NO IDLE 3. BM NEVER HEARD OF THE PROBLEM. *TR

Mileage: 120,000

THE ENGINE / FUEL INJECTION WIRING HARNESS OF MY 1993 MERCEDES-BENZ 300E HAS CRACKED INSULATION THROUGHOUT AND IS BEGINNING TO SHORT OUT WITH THE RISK OF CAUSING DANGEROUS ENGINE MALFUNCTION AND EVEN FIRE INSIDE MY ENGINE COMPARTMENT. I HAVE READ MANY REPORTS OF OTHER MERCEDES-BENZ CARS OF THE SAME AGE RANGE HAVING THE EXACT SAME DEFECT. I HAVE BROUGHT IT IN TO MY MECHANIC SEVERAL TIMES BECAUSE OF THE HESITATION AND SHORTING THAT OCCURS - ESPECIALLY WHEN I HAVE THE AC OR HEATER RUNNING AND HAVE SPENT A SIGNIFICANT AMOUNT OF MONEY ON TRYING TO REMEDY IT BY ATTEMPTING TO RE-WRAP THE WIRING BUT IT ONLY AFFORDED ME A TEMPORARY FIX AT BEST. THE ESTIMATE I WAS GIVEN TODAY WAS FOR $1,400 FOR THE WIRING HARNESS AND ANOTHER $700 - $800 FOR THE LABOR COST ASSOCIATED WITH IT'S INSTALL. FROM THE NUMBER OF SIMILAR ANECDOTAL STORIES I HAVE READ ONLINE WHILE RESEARCHING THIS ISSUE, I WONDER WHY MERCEDES BENZ HAS NOT ISSUED A RECALL ON THIS OBVIOUS DESIGN DEFECT. *TR

Mileage: 150,000

THE ENGINE / FUEL INJECTION WIRING HARNESS OF MY 1993 MERCEDES-BENZ 300E HAS CRACKED INSULATION THROUGHOUT AND IS BEGINNING TO SHORT OUT WITH THE RISK OF CAUSING DANGEROUS ENGINE MALFUNCTION AND EVEN FIRE INSIDE MY ENGINE COMPARTMENT. I HAVE READ MANY REPORTS OF OTHER MERCEDES-BENZ CARS OF THE SAME AGE RANGE HAVING THE EXACT SAME DEFECT. I HAVE BROUGHT IT IN TO MY MECHANIC SEVERAL TIMES BECAUSE OF THE HESITATION AND SHORTING THAT OCCURS - ESPECIALLY WHEN I HAVE THE AC OR HEATER RUNNING AND HAVE SPENT A SIGNIFICANT AMOUNT OF MONEY ON TRYING TO REMEDY IT BY ATTEMPTING TO RE-WRAP THE WIRING BUT IT ONLY AFFORDED ME A TEMPORARY FIX AT BEST. THE ESTIMATE I WAS GIVEN TODAY WAS FOR $1,400 FOR THE WIRING HARNESS AND ANOTHER $700 - $800 FOR THE LABOR COST ASSOCIATED WITH IT'S INSTALL. FROM THE NUMBER OF SIMILAR ANECDOTAL STORIES I HAVE READ ONLINE WHILE RESEARCHING THIS ISSUE, I WONDER WHY MERCEDES BENZ HAS NOT ISSUED A RECALL ON THIS OBVIOUS DESIGN DEFECT. *TR

Mileage: 150,000

THE ENGINE / FUEL INJECTION WIRING HARNESS OF MY 1993 MERCEDES-BENZ 300E HAS CRACKED INSULATION THROUGHOUT AND IS BEGINNING TO SHORT OUT WITH THE RISK OF CAUSING DANGEROUS ENGINE MALFUNCTION AND EVEN FIRE INSIDE MY ENGINE COMPARTMENT. I HAVE READ MANY REPORTS OF OTHER MERCEDES-BENZ CARS OF THE SAME AGE RANGE HAVING THE EXACT SAME DEFECT. I HAVE BROUGHT IT IN TO MY MECHANIC SEVERAL TIMES BECAUSE OF THE HESITATION AND SHORTING THAT OCCURS - ESPECIALLY WHEN I HAVE THE AC OR HEATER RUNNING AND HAVE SPENT A SIGNIFICANT AMOUNT OF MONEY ON TRYING TO REMEDY IT BY ATTEMPTING TO RE-WRAP THE WIRING BUT IT ONLY AFFORDED ME A TEMPORARY FIX AT BEST. THE ESTIMATE I WAS GIVEN TODAY WAS FOR $1,400 FOR THE WIRING HARNESS AND ANOTHER $700 - $800 FOR THE LABOR COST ASSOCIATED WITH IT'S INSTALL. FROM THE NUMBER OF SIMILAR ANECDOTAL STORIES I HAVE READ ONLINE WHILE RESEARCHING THIS ISSUE, I WONDER WHY MERCEDES BENZ HAS NOT ISSUED A RECALL ON THIS OBVIOUS DESIGN DEFECT. *TR

Mileage: 150,000

VEHICLE IS 1993 MERCEDES 300E SEDAN. 1. STRANGE THINGS GO ON WITH THE ELECTRICAL SYSTEM 2. WHEN UNLOCKING KEY, SOMETIMES THE ALARM WILL GO ON. 3. CHECK ENGINE LIGHT WILL NOT GO OFF EVEN AFTER REPAIR WAS DONE. 4. SOMETIMES AIR BLOWER WILL WORK, SOMETIMES NOT. 5. SOMETIMES ANTENNA WILL COME UP, SOMETIMES NOT. THIS LEADS ME TO BELIEVE THAT THE WIRING HARNESS MIGHT BE AFFECTING THE CAR'S ELECTRICAL PERFORMANCE. I WOULD HATE TO STRIP THE HARNESS TO FIND OUT. BUT THERE ARE PLENTY OF COMPLAINTS NOW ON THIS WIRING HARNESS PROBLEM. I WISH THAT MERCEDES WILL DO A RECALL AND REPAIR THESE CARS. *TR

Mileage: 130,000

1993 300E 3.2 M104 ENGINE WIRING HARNESS DISINTERGRATING, WIRE INSULATION FALLS APART ENTIRE WIRING HARNESS WIRES EVEN NOT EXPOSED TO HEAT DAMAGED. CHRONIC PROBLEM ALL 3 OF OUR MERCEDES HAVE THIS PROBLEM THE 300E THE WORST. I WORKED AT MERCEDES AND REPLACED THESE HARNESS EVERY WEEK. THIS IS VERY UNSAFE CAN RESULT IN FIRES, ECM FAILURE, DRIVABLE ISSUES, NO START, AND MANY MORE PROBLEMS. *TR

Mileage: 70,000

THE ENGINE WIRING HARNESS OF MY MERCEDES 1993 300E WIRES HAD DISINTEGRATED CAUSING SHORTAGES ON THE WIRES. IT IS UNBELIEVABLE MERCEDES WITH SUCH HIGH REPUTATION ON QUALITY WOULD IGNORE SUCH FAILURES ON THEIR PART. *TR

Mileage: 97,400

FUEL INJECTOR HARNESS IS DRY ROTTED AS SEEN IN THE IMAGES ON THIS SITE. I JUST RECENTLY DISCOVERED THAT THERE IS A MAJOR DEFECT WITH THE HARNESS ASSEMBLY DUE TO POOR WORKMANSHIP THIS IS CERTAINLY A MANUFACTURING DEFECT. MERCEDES SHOULD REPLACE THE HARNESS FREE OF CHARGE. *TR

I OWN A 1993 MERCEDES 300E THAT FOR THE SECOND TIME HAS HAD ENGINE WIRING HARNESS FAILURE. I FIND THIS TO BE A VERY UNSAFE PROBLEM WITH INSULATION FROM THE WIRE BECOMING BRITTLE AND FALLING OFF. I OF AT LEAST THREE OTHER MERCEDES OWNERS THAT HAVE EXPERIENCED THE SAME PROBLEM. THIS IS A TIME BOMB WAITING TO HAPPEN. *JB

Mileage: 183,000

WIRING HARNESS DISINTERGRATED CAUSING WIRES EXPOSED AND TOUCHING OTHER WIRES. LITTLE OR NO INSULATION IS LEFT ON MOST WIRES. THE ENGINE SURGES/CHARGES WHILE COMPLETE IDLE AND BREAK FULLY ON HOLD.

Mileage: 80,000

DECAYED ENGINE WIRING HARNESS. MISCELLANEOUS ENGINE ERROR INDICATIONS, ASR LIGHT COMING ON (CAR IN "LIMP HOME" MODE). NOT TRACEABLE TO ANY COMPONENT FAILURE. INABILITY TO START THE CAR. REFUSAL OF INDEPENDENT MECHANIC TO WORK ON THE CAR UNTIL THE WIRING HARNESS HAS BEEN REPLACES. FAILURE OCCURS ON 65 MPH ROAD, INABILITY TO ATTAIN HIGHWAY SPEEDS, REPEATED STALLING. CAR IS AT HOME IN GARAGE AND WILL NOT RUN FOR MORE THAN A FEW SECONDS. *JB

Mileage: 214,000

I OWN A 1993 MERCEDES BENZ 300E. I NOTICED A SECTION OF THE WIRING HARNESS UNDERNEATH MY HOOD BACK AGAINST THE FIREWALL HAS BEGUN TO DETERIORATE. THE PROTECTIVE PLASTIC ON THE WIRING HARNESS IS CRACKING, EXPOSING WIRE. LOOKS LIKE A FIRE HAZARD. MY CAR HAS STALLED SEVERAL TIMES FOR NO APPARENT REASON, POSSIBLY RELATED TO THE WIRE PROBLEM. *NM

Mileage: 90,000

1993 MB 300E - WIRING HARNESS HAS BEGUN TO DETERIORATE CAUSING THE ENGINE TO STALL AND OR NOT START. STALLING CAN OCCUR WHILE DRIVING, THUS LOSING ALL POWER TO PROPERLY CONTROL THE VEHICLE. *JB

Mileage: 158,000

1993 MERCEDES BENZ 300E THE WIRING ON THE FUEL INJECTOR SYSTEM (AS WELL AS OTHER AREAS OF THE HARNESS) WAS REPLACED 5 YEARS AGO AS DEFECTIVE NOW IT IS DEFECTIVE AGAIN. MERCEDES BENZ REFUSES TO ACCEPT RESPONSIBILITY FOR THIS ISSUE. I HAVE BEEN TOLD THAT THE CAR IS A POTENTIAL SAFETY HAZARD AS THE RISK OF FIRE IS GOOD. MERCEDES APPEARS TO HAVE USED AN INSULATION THAT IS KNOWN FOR DEGRADATION AND REFUSES TO RECALL OR CARE FOR THE ISSUE. *JB

Mileage: 98,000

WHEN HAVING THE CAR SERVICED, THE REPAIR FACILITY IDENTIFIED MAJOR DETERIORATION OF THE ENGINE WIRING HARNESS. THEY INDICATED THAT THIS COULD BE A SAFETY HAZARD, POSSIBLY CAUSING A FIRE OR LOSING ALL POWER TO THE VEHICLE WHILE DRIVING, MAKING IT VERY DIFFICULT TO CONTROL THE VEHICLE. *NM