RoadVitals

1995 Mercedes-Benz SL320 Electrical Problems

Owner-reported complaints naming the electrical system, filed with NHTSA

Data refreshed

Electrical reportsComplaints are reports submitted to NHTSA by owners and drivers. NHTSA does not verify most reports before publishing them, and a complaint does not establish that a defect exists. Volume is influenced by how many of a vehicle were sold, how long it has been on the road, and how much attention an issue has received.
11
Latest Jul 7, 2019
Share of all reportsThis category as a share of every owner report on file for this model year. One report can name more than one component, so the categories overlap.
69%
of 16 total
Crash or fire reportedReports in this category whose submitter recorded that a crash or a fire occurred. The reporter's own answer on the NHTSA form, not a verified finding.
1
Injuries or deaths reportedTotals the submitters entered on their own reports in this category. Not verified by NHTSA and not a casualty statistic.
0

What this page shows

Reports naming the electrical system — wiring, battery, charging, control modules, infotainment and electrical accessories. Every record below is an owner-reported complaint about the 1995 Mercedes-Benz SL320 submitted to NHTSA — not a confirmed defect, not a recall and not a manufacturer bulletin. 11 reports on file name it.

Complaints are reports submitted by owners and drivers to NHTSA. They are not verified and do not establish that a defect exists.

Owner reports naming electrical

Shown in the owner’s own words, exactly as filed

Electrical
Filed Jul 7, 2019

(XXXX) BIODEGRADING WIRING HARNESS REDACTED TO PROTECT PERSONALLY IDENTIFIABLE INFORMATION PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6).

NHTSA ID
11229850
Incident
Mar 6, 2019
Mileage
135,000 mi
Electrical
Filed Apr 23, 2019

MY VEHICLE IS A 1995 MERCEDES BENZ SL320R AND WAS BUILT WITH BIODEGRADABLE WIRING INSULATION IN THE ENGINE HARNESS. THE INSULATION IS DETERIORATING AND CAUSING PROBLEMS THROUGHOUT THE ELECTRICAL COMPONENTS. THE VEHICLE HAS 131,000 MILES. I'M THE 3RD OWNER. POSTINGS ON THE INTERNET INDICATE POTENTIALLY FATAL FAILURES ARE POSSIBLE. IT IS LIKELY THAT THE PREVIOUS OWNERS WERE NOT AWARE OF THIS PROBLEM. DO I HAVE ANY RECOURSE?

NHTSA ID
11203157
Incident
Apr 1, 2017
Mileage
121,000 mi
Electrical
Filed Feb 5, 2018

TL* THE CONTACT OWNS A 1995 MERCEDES-BENZ SL320. ON SEVERAL OCCASIONS, THE VEHICLE WOULD NOT START. THE VEHICLE WAS TAKEN TO AN INDEPENDENT MECHANIC WHO DIAGNOSED THAT THE WIRING HARNESS TO THE COMPUTER CLUSTER WAS DAMAGED AND NEEDED TO BE REPLACED. THE VEHICLE WAS NOT REPAIRED. AN UNKNOWN DEALER WAS NOTIFIED OF THE FAILURE, BUT THE MANUFACTURER WAS NOT. THE FAILURE MILEAGE WAS 130,000. *TT

NHTSA ID
11066993
Incident
Sep 1, 2017
Mileage
130,000 mi
Electrical
Filed Jan 16, 2018

TL* THE CONTACT OWNS A 1995 MERCEDES-BENZ SL320R. THE CONTACT STATED THAT THE CHECK ENGINE INDICATOR ILLUMINATED. UPON INSPECTION, THE CONTACT NOTICED THAT THE PLASTIC ON THE WIRING HARNESS WAS PEELING. THE VEHICLE WAS TAKEN TO AN INDEPENDENT MECHANIC WHERE IT WAS DIAGNOSED THAT THE WIRING HARNESS NEEDED TO BE REPLACED. THE VEHICLE WAS NOT REPAIRED. THE CONTACT CALLED MERCEDES-BENZ OF AUGUSTA AT (706) 860-1111 (LOCATED AT 3061 WASHINGTON RD, AUGUSTA, GA 30907) WHERE IT WAS CONFIRMED THAT THE WIRING HARNESS NEEDED TO BE REPLACED. THE DEALER CONFIRMED THAT NO RECALLS WERE ASSOCIATED WITH THE VIN AND THERE WOULD BE A FEE. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS NOT NOTIFIED OF THE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 140,000. *TT *TR

NHTSA ID
11063069
Incident
May 15, 2017
Mileage
140,000 mi
Electrical
Filed Jul 18, 2016
Fire reported

THE ENGINE BAY WIRING HARNESSES HAVE DISINTEGRATED ON THE CAR DUE TO USE OF HEAT SUSCEPTIBLE WIRE INSULATION. THIS HAS CAUSED BARE WIRES TO SHORT OUT IN THE ENGINE BAY. WHILE DRIVING THE VEHICLE, IT CAUSED THE ENGINE TO SPONTANEOUSLY SURGE RESULTING IN UNCONTROLLED ACCELERATION. SUBSEQUENT TO THE SURGING, IT CAUSED THE ENGINE TO DIE RESULTING IN A LOSS OF POWER STEERING AND BRAKING POWER. WHILE ATTEMPTING TO DIAGNOSE WITH WAS CAUSING THESE ENGINE MALFUNCTIONS, ELECTRICAL ARCING AND SMOLDERING OF THE WIRING BECAME APPARENT. THIS IS A SERIOUS SAFETY ISSUE AND MB HAS REFUSED TO CORRECT IT. THE REPAIR INVOLVES THE RELATIVELY SIMPLE REPLACEMENT OF 4 WIRING HARNESSES IN THE ENGINE BAY. THIS IS A WIDE SPREAD ISSUE AFFECTING MANY MERCEDES VEHICLES PRODUCED BETWEEN 1991 AND 1996.

NHTSA ID
10885736
Incident
Jul 6, 2016
Mileage
140,000 mi
Electrical
Filed Mar 8, 2016

THIS CARS 1995 MERCEDEZ BENZ SL320 ARE A DANGER FOR DRIVERS AND I THINK GOVERMENT HAVE TO TAKE CARE OF SAFETY MATTER FOR PEOPLE MUST HAVE MERCEDEZ BENZ TO TAKE CARE OF THIS MATTER

NHTSA ID
10845540
Incident
Mar 6, 2016
Electrical
Filed Dec 6, 2015

ENGINE WIRING HARNESS, ETA WIRING HARNESS, FUEL INJECTION WIRING DEFECTIVE CAUSING ENGINE TO STALL AND ELECTRICAL TO CEASE WHILE IN MOTION.

NHTSA ID
10808672
Incident
Sep 16, 2014
Mileage
170,000 mi
Electrical
Filed Mar 12, 2015

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

NHTSA ID
10693881
Incident
Dec 5, 2014
Mileage
126,609 mi
Electrical
Filed Feb 20, 2015

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

NHTSA ID
10689564
Incident
Feb 20, 2015
Mileage
32,500 mi
Electrical
Filed Oct 15, 2014

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

NHTSA ID
10644918
Incident
Oct 15, 2014
Electrical
Filed Apr 9, 2014

UPPER ENGINE WIRING HARNESS DETERIORATED SHORTING OUT WIRES CONTROLLING ENGINE. CAUSING INTERMITTENT ENGINE STALLING CAUSING REDUCED AND/OR LOSS OF CONTROL OF VEHICLE. *TR

NHTSA ID
10578760
Incident
Apr 9, 2014
Mileage
150,000 mi

Higher-selling and older vehicles accumulate more reports. Counts are not failure rates and are not directly comparable between vehicles that sold in very different numbers.

Elsewhere on this vehicle

Data sources

Data on this page last refreshed .