WIRING HARNESS PREMATURE WEAR DRAMATICALLY. *TR
1994 Mercedes Benz E Class
Owner reports · Recalls · Investigations
Limited comparison data
There is not enough comparable history to draw a useful model-year comparison.
About this comparison →How this year compares
Owner complaints by model year
Compare all E Class years →Counts vary with age, sales and reporting. They are not failure rates.
What owners reported most
All reported categories
Tap a category to read its complaints. One report may name several components.
When problems were reported
Mileage at the reported incident
30 reports with mileage · 8 unknown
NHTSA’s mileage field refers to the reported incident, not necessarily the filing date. This shows report counts, not the likelihood of a failure.
What to inspect
Issues worth paying extra attention to based on owner reports.
- Electrical System. Review the 31 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Engine And Engine Cooling. Review the 6 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Suspension. Review the 2 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
NHTSA owner reports · September 18, 2026 snapshot.
Electrical System complaints
31 reportsAUTO FIRE , TOTAL LOSS. *TR
1994 E320 ENGINE WIRING HARNESS DETERIORATED. ALL INSULATION ON WIRES CRACKED AND BROKEN OFF. THE WIRE FUSED TOGETHER. *AK
1993 400E MERCEDES BENZ - ENGINE WIRING HARNESS INSULATION IS CRACKING, CAUSING FALSE ENGINE LIGHT CODES. WIRING HARNESS ON TOP OF ENGINE. COST TO REPLACE (PART ONLY) WIRING HARNESS IS APPROXIMATELY $575.00.
FAILURE OF ENGINE WIRING HARNESS, CAUSING ENGINE TO STALL ON FREEWAY.*AK
CHECK ENGINE LIGHT CAME ON AND WE WERE ALMOST HIT BY OTHER CARS WHEN TRYING TO QUICKLY EXIT BUSY FREEWAY. TOOK CAR TO MERCEDES MECHANIC AND HE SAID THE CAR NEEDED A NEW $600.00 ENGINE HARNESS. WE ASKED IF THIS IS A RARE PROBLEM AND HE SAID ALL 1993 AND 1994 E420 MERCEDES NEED THE HARNESS AT ABOUT 100 THOUSAND MILES AND THEY USED…
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CHECK ENGINE LIGHT CAME ON AND WE WERE ALMOST HIT BY OTHER CARS WHEN TRYING TO QUICKLY EXIT BUSY FREEWAY. TOOK CAR TO MERCEDES MECHANIC AND HE SAID THE CAR NEEDED A NEW $600.00 ENGINE HARNESS. WE ASKED IF THIS IS A RARE PROBLEM AND HE SAID ALL 1993 AND 1994 E420 MERCEDES NEED THE HARNESS AT ABOUT 100 THOUSAND MILES AND THEY USED A BIODEGRADEABLE COVER ON THE HARNESS AND IT FAILS FROM ENGINE HEAT. HE ALSO SAID IF WE DON'T REPLACE IT, THE ENGINE WILL STOP WHEN DRIVING, AND COULD CAUSE AN ACCIDENT. THIS IS A WELL KNOWN PROBLEM WITH ALL MERCEDES MECHANICS. THESE CARS NEED TO BE RECALLED!!!! *NM
HI, I HAVE A 1994 MERCEDES BENZ E320 COUPE. I WAS IN THE SEARCH OF REPAIR ON MY RADIO PROBLEM,THEN I FOUND OUT FROM THE OTHER OWNERS THAT THEY HAVE THIS ENGINE WIRING HARNESS PROBLEM WITH THEIR MERCEDES. I CHECKED THE WIRING HARNESS WITH THEIR RECOMMENDATION ON MY CAR, I FOUND THAT THE SAME PROBLEM JUST LIKE THE OTHER OWNER SAY…
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HI, I HAVE A 1994 MERCEDES BENZ E320 COUPE. I WAS IN THE SEARCH OF REPAIR ON MY RADIO PROBLEM,THEN I FOUND OUT FROM THE OTHER OWNERS THAT THEY HAVE THIS ENGINE WIRING HARNESS PROBLEM WITH THEIR MERCEDES. I CHECKED THE WIRING HARNESS WITH THEIR RECOMMENDATION ON MY CAR, I FOUND THAT THE SAME PROBLEM JUST LIKE THE OTHER OWNER SAY, A LOT OF CRACK ON THE WIRES. I AM NOW AFRAID TO DRIVE MY CAR, BECAUSE OTHER OWNERS DESCRIBE THAT IT MAY CAUSE THE ENGINE TO CAUGHT ON FIRE, SUDDENLY LOST POWER, SHORT OUT THE COMPUTER UNIT ON THE VEHICLE. MERCEDES HAVE NOT DO A RECALL ON THIS ENGINE WIRING HARNESS PROBLEM, EVEN THOUGH HUNDREDS OF OWNERS HAVE FILED THE COMPLAINT. PLEASE LET ME KNOW IF THERE'S ANYTHING THAT YOUR PEOPLE CAN HELP. I JUST NOT DRIVING MY CAR NOW, THE SHOP WANT ABOUT $1000.00 TO REPLACE THE WIRING HARNESS, THAT'S SOME THING YOU DON'T EXPECT WHEN YOU PURCHASE A USE CAR. THANKS... *NM
DT*: THE CONTACT STATED UPON STARTING THE VEHICLE IN THE MORNING, THE ENGINE MADE A LOUD NOISE AND THE ENGINE WARNING LIGHT ILLUMINATED. ALSO, WHILE DRIVING 65 MPH ON NORMAL ROAD CONDITIONS, THE ENGINE WARNING LIGHT ILLUMINATED AGAIN AND STALLED. THE VEHICLE WAS TAKEN TO THE DEALERSHIP WHERE THE DIAGNOSIS SCANNER INDICATED A W…
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DT*: THE CONTACT STATED UPON STARTING THE VEHICLE IN THE MORNING, THE ENGINE MADE A LOUD NOISE AND THE ENGINE WARNING LIGHT ILLUMINATED. ALSO, WHILE DRIVING 65 MPH ON NORMAL ROAD CONDITIONS, THE ENGINE WARNING LIGHT ILLUMINATED AGAIN AND STALLED. THE VEHICLE WAS TAKEN TO THE DEALERSHIP WHERE THE DIAGNOSIS SCANNER INDICATED A WIRING PROBLEM. THERE WAS A NHTSA RECALL # 95V031000 REGARDING ELECTRICAL SYSTEM:WIRING. THE MANUFACTURER WAS CONTACTED BUT THE REPRESENTATIVE INDICATED THE VEHICLE WAS OUT OF WARRANTY AND WAS NOT INCLUDED IN THE RECALL DUE TO THE VIN. THE CONTACT WAS SUGGESTED TO MAKE A COMPLAINT WITH THE NHTSA.
MY 1994 MERCEDES E420 WAS NOT STARTING PROPERLY (ASR LIGHT COMING ON, ON SEVERAL OCCASIONS). TOOK IT TO MECHANIC WHO NOTICED ELECTRIC TAPE ON SOME CONNECTIONS, THEN LATER FOUND OUT WHY. THE WIRING HARNESS HAD DETERIORATED IN MULTIPLE PLACES. I WAS LEFT STRANDED AT A MEETING IN THE POURING RAIN AND COULD NOT GET BACK TO THE HOSPI…
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MY 1994 MERCEDES E420 WAS NOT STARTING PROPERLY (ASR LIGHT COMING ON, ON SEVERAL OCCASIONS). TOOK IT TO MECHANIC WHO NOTICED ELECTRIC TAPE ON SOME CONNECTIONS, THEN LATER FOUND OUT WHY. THE WIRING HARNESS HAD DETERIORATED IN MULTIPLE PLACES. I WAS LEFT STRANDED AT A MEETING IN THE POURING RAIN AND COULD NOT GET BACK TO THE HOSPITAL ONE EVENING. *JB
MB USA REFUSES TO REPLACE FAULTY WIRING HARNESS, THIS IS A KNOW ISSUE. DISINTEGRATES WITH AGE DO TO USE OF SUB-STANDARD HARNESS COVERS. *NM
Official recalls
195V031000 · Electrical System:wiring
Feb 21, 1995
THE FRONT PASSENGER METAL FOOT REST CAN, OVER TIME, ABRADE THROUGH THE WIRING HARNESS UNDER THE FOOT REST CAUSING THE WIRING HARNESS TO SHORT CIRCUIT.
Consequence & remedy
Consequence: A SHORT CIRCUIT CAN CAUSE THE WIRES TO OVERHEAT, STALL THE ENGINE, OR INADVERTENTLY DEPLOY AN AIRBAG, ANY OF THESE INCREASES THE POTENTIAL FOR A VEHICLE CRASH.
Remedy: DEALERS WILL INSTALL ADDITIONAL WIRING HARNESS CABLE FASTENER TIES AND EDGE PROTECTIVE COVERING FOR SHARP EDGES OF THE METAL FOOT REST.
Model-level recall history does not show whether a particular VIN is affected or has received a repair. Check a VIN with NHTSA ↗
NHTSA investigations
0No exact-year investigations in this snapshot.
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