MY MERCEDES BENZ 1994 WIRE HARNESS SHORTED DUE TO FAULTY INSULATION. THIS CAUSED THE CAR TO STOP RUNNING WHILE DRIVING. I HAD TO HAVE THE AUTO TOWED. I UNDERSTAND THE OVER 1 MILLION MB CARS ARE EFFECTED. WHY IS THERE NOT A RECALL? *TR
1995 Mercedes Benz SL320
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 SL320 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
Limited mileage data: 14 of 16 reports include usable mileage. There isn’t enough coverage to show a useful chart.
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 11 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Engine. Review the 2 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Air Bags. Review the 1 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
NHTSA owner reports · September 18, 2026 snapshot.
What owners actually said
16 reportsTODAY, AFTER A ROUTINE LOF SERVICE, MY MECHANIC INFORMED ME THAT THE WIRING HARNESS ON MY SL320 HAD DETERIORATED TO THE POINT THAT MY CAR WAS UNSAFE. HE CLAIMS THAT THE INSULATION ON THE WIRING HARNESS WAS MADE OF A BIODEGRADABLE MATERIAL AND THAT IT HAS NOW BIODEGRADED TO THE POINT THAT THERE NO LONGER IS ANY INSULATION, HE CL…
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TODAY, AFTER A ROUTINE LOF SERVICE, MY MECHANIC INFORMED ME THAT THE WIRING HARNESS ON MY SL320 HAD DETERIORATED TO THE POINT THAT MY CAR WAS UNSAFE. HE CLAIMS THAT THE INSULATION ON THE WIRING HARNESS WAS MADE OF A BIODEGRADABLE MATERIAL AND THAT IT HAS NOW BIODEGRADED TO THE POINT THAT THERE NO LONGER IS ANY INSULATION, HE CLAIMS THAT MERCEDES KNOWS THAT THEIR HARNESSES ARE DEFECTIVE BUT THEY WILL TAKE NO ACTION IN SOLVING THE PROBLEM, INDEED FOR MANY YEARS THEY SOLD REPLACEMENT HARNESSES WITH THE SAME DEFECT. WHO KNOWS WHAT THE CURRENT WIRING HARNESS NOW BEING SOLD, WILL SOON DEVELOP ISSUES AS WELL? *TR
THE SRS WARNING LIGHT CAME ON. A DIAGNOSTIC CODE INDICATED THAT THE AIR BAG CONTROL MODULE (LOCATED IN THE DASH BOARD, BEHIND THE RADIO) WAS NOT WORKING. THIS IS NOT A SERVICEABLE PART. A NEW MODULE IS $1,400, REPEAT, YES, $1,400, NOT INSTALLED. I THINK AIR BAG EQUIPMENT SHOULD HAVE LIFE TIME WARRANTIES AND CERTAINLY SHOULD N…
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THE SRS WARNING LIGHT CAME ON. A DIAGNOSTIC CODE INDICATED THAT THE AIR BAG CONTROL MODULE (LOCATED IN THE DASH BOARD, BEHIND THE RADIO) WAS NOT WORKING. THIS IS NOT A SERVICEABLE PART. A NEW MODULE IS $1,400, REPEAT, YES, $1,400, NOT INSTALLED. I THINK AIR BAG EQUIPMENT SHOULD HAVE LIFE TIME WARRANTIES AND CERTAINLY SHOULD NOT BE $1,400. THE WOULD APPEAR TO BE PUTTING PROFITS BEFORE SAFETY. I AM A TEACHER, NOT A STOCK BROKER. I BOUGHT THIS CAR THREE YEARS AGO ( THE VEHICLE WAS17 YEARS OLD). IT WAS IN GOOD SHAPE AND WELL MAINTAINED. IF THE ENGINE THREW A ROD OR THE TRANS WENT OUT, MY TOUGH LUCK. BUT I THINK SAFETY THINGS SUCH AS AIR BAGS SHOULD HAVE LIFE TIME WARRANTIES. *TR
HELLO MY NAME IS [XXX] AND I OWN A 1995 SL320. I WOULD LIKE YOU TO LAUNCH AN INVESTIGATION INTO THIS MATTER OF IMPORTANCE OF LIFE AND DEATH. THE MERCEDES BENZ ENGINE WIRING HARNESS IS DEFECTIVE AND MB KNOWS THIS. LISTED BELOW IS AN ARTICLE I FOUND WITH THE IMPORTANCE OF REPLACING AND THE IGNORANCE ON MERCEDES BEHALF. THIS …
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HELLO MY NAME IS [XXX] AND I OWN A 1995 SL320. I WOULD LIKE YOU TO LAUNCH AN INVESTIGATION INTO THIS MATTER OF IMPORTANCE OF LIFE AND DEATH. THE MERCEDES BENZ ENGINE WIRING HARNESS IS DEFECTIVE AND MB KNOWS THIS. LISTED BELOW IS AN ARTICLE I FOUND WITH THE IMPORTANCE OF REPLACING AND THE IGNORANCE ON MERCEDES BEHALF. THIS HARNESS CONTAINS HUNDREDS OF WIRES BUNDLED INSIDE TIGHTLY WRAPPED TAPE. THE WIRES COMMUNICATE INFORMATION FROM THE MANY SENSORS OF THE VEHICLE'S ENGINE AND ACCESSORIES BACK TO THE COMPUTER MODULES. THE MODULES USE THIS INFORMATION TO REGULATE CRITICAL FUNCTIONS SUCH AS ENGINE IDLE SPEEDS, RPM, FUEL MIXTURE, FUEL INJECTION, IGNITION AND MANY MORE. WHEN THE INFORMATION RECEIVED BY THESE COMPUTERS IS GARBLED OR ERRONEOUS THE ENGINE WILL RUN ROUGH, ACCELERATE UNEXPECTEDLY OR QUIT ALTOGETHER. IN ADDITION WHEN THE WIRES SHORT IT COULD CAUSE ENGINE FIRES, SUDDEN STALLS ON THE HIGHWAY AND OTHER FAILURES THAT COULD CAUSE DEATH OR SERIOUS INJURY. IN EFFECT, THE VEHICLE SELF-DESTRUCTS. THE QUESTION IS NOT ONE OF IF THEY WILL FAIL BUT OF WHEN ? ALL VEHICLES MANUFACTURED IN THOSE YEARS (AT LEAST ?91-?96) HAVE THE DEFECTIVE INSULATION AND WILL FAIL SOONER OR LATER, THUS YOU CAN UNDERSTAND MERCEDES? RELUCTANCE TO OWN UP TO THE PROBLEM: INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6). *TR
ENGINE WIRING HARNESS OVERHEATED AND STARTED SMOKING. ENGINE STALLED THIS REDUCED VEHICLE CONTROL. WAS ABLE TO PULL OVER SAFELY. *JS
UPPER ENGINE WIRING HARNESS DETERIORATED SHORTING OUT WIRES CONTROLLING ENGINE. CAUSING INTERMITTENT ENGINE STALLING CAUSING REDUCED AND/OR LOSS OF CONTROL OF VEHICLE. *TR
Official recalls
0No recalls in this snapshot.
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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