RoadVitals

1991 Mercedes-Benz 500SL

Recalls, owner-reported complaints, investigations and safety data

Data refreshed

Owner complaintsComplaints 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.
3
Latest Oct 29, 2009
Safety recallsA safety recall is issued when a manufacturer or NHTSA determines that a vehicle has a safety-related defect or does not comply with a federal motor vehicle safety standard. Recall repairs are free. Whether a specific vehicle is covered depends on its VIN — a recall listed for a model year does not necessarily apply to every vehicle of that year.
1
Latest Apr 28, 1993
InvestigationsNHTSA opens an investigation to examine whether a safety defect may exist. An open investigation is not a determination that a defect exists, and many investigations close without a recall. Investigations can, however, lead to one.
0
Crash or fire reportedComplaints whose submitter recorded that a crash or a fire occurred. These are the reporter's own answers on the NHTSA form, not verified findings.
1

Overview

Our database contains 3 NHTSA owner-reported complaints for the 1991 Mercedes-Benz 500SL, most frequently naming the electrical and driver assistance categories. 1 safety recall has been issued covering this model year.

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

What owners report

Complaints grouped by the component NHTSA recorded

  • Electrical266.7%
  • Driver assistance133.3%

Percentages are of component mentions. A single complaint can name more than one component, so these do not sum to the total complaint count.

Safety recalls

1 campaign cover this model year

Recalls apply to specific vehicles, not to every vehicle of a model year. Check your VIN with NHTSA or your manufacturer's dealer to confirm whether a recall affects your vehicle.

Check a VIN on NHTSA.gov
93V067000

SERVICE BRAKES, HYDRAULIC:POWER ASSIST

Apr 28, 1993
14,300 units potentially affected
The defect: DURING THE REMOVAL AND INSTALLATION OF THE AIR FILTER HOUSING WHILE SERVICING THE VEHICLE, IT IS POSSIBLE TO MISROUTE THE PREFORMED VACUUM HOSE AND DAMAGE THE CHECK VALVE IN THE VACUUM HOSE. IF THE CHECK VALVE IS DAMAGED, LOSS OF SUFFICIENT BRAKE POWER ASSIST WILL OCCUR.
The risk: LACK OF SUFFICIENT BRAKE POWER ASSIST WILL INCREASESTOPPING DISTANCE AND COULD RESULT IN A VEHICLE ACCIDENT.
The remedy: REPLACE THE PREFORMED VACUUM HOSE WITH A NEWLY DESIGNED PREFORMED HOSE WITH A RELOCATED CHECK VALVE WHICH WILL ELIMINATE THE POSSIBILITY OF THE CHECK VALVE BEING DAMAGED.
MERCEDES-BENZ USA, INC.View on NHTSA.gov

Recent owner complaints

Reports submitted to NHTSA, shown in the owner's own words

Electrical
Filed Oct 29, 2009

ENGINE WIRING HARNESS FAILURE, MULTIPLE SYSTEMS AFFECTED. CAR WILL SPUTTER, STALL, NOT RESTART. HAPPENS WHILE GOING DOWN THE ROAD, TURNING CORNERS, COMING TO A STOP, WHILE TRYING TO ACCELERATE FROM A STOP.... THE ENGINE WIRING HARNESS HAS BARE WIRES ALL OVER THE PLACE. MB REFUSES TO ACKNOWLEDGE THAT THERE ARE PROBLEMS WITH THESE CARS, ALTHOUGH I'VE SPOKEN WITH MANY MERCEDES OWNERS WHO HAVE THE SAME TYPE OF PROBLEMS. CALLS TO MERCEDES BENZ NEVER GET ME ANYWHERE. THEY ARE RUDE AND ONLY SAY THAT THEY HAVE NEVER HEARD OF ANOTHER BENZ WITH AN ENGINE WIRING HARNESS PROBLEM BEFORE. I CANNOT DRIVE THIS CAR, PERIOD. I WOULDN'T DRIVE IT TO THE CORNER FOR MILK EVEN IT WOULD START AND RUN CONSISTENTLY. THE WIRING HARNESS WAS MADE WITH "BIODEGRADABLE" INSULATION ON ALL THE WIRES. WHEN CAN I EXPECT THE AIR BAGS ON MY NEWER MERCEDES TO FAIL DUE TO SOME TYPE OF "BIODEGRADABLE" MATERIALS BEING USED? *TR

NHTSA ID
10290278
Incident
Aug 27, 2009
Mileage
212,000 mi
Driver assistance
Filed Aug 5, 2007

WHILE DRIVING, MY 1991 500SL CONVERTIBLE FOR NO APPARENT REASON WILL NOT ACCELERATE AND THE ASR LIGHT COMES ON. IF I SHUT DOWN AND RESTART IT GOES AWAY BUT WILL COME RIGHT BACK IF I GOOSE THE GAS AT ALL. THIS HAPPENS A LOT! LOOKS LIKE THE SAME PROBLEM MANY PEOPLE ARE HAVING WITH 91-96 VARIOUS MODELS WITH THEIR WIRING HARNESSES. *TR

NHTSA ID
10198540
Incident
Jun 25, 2007
Mileage
138,000 mi
Electrical
Filed Feb 7, 2007
Fire reported

TERRIBLE CRACKING OF MAIN WIRE HARNESS!!!!!!*JB

NHTSA ID
10181872
Incident
Dec 28, 2006
Mileage
98,000 mi

Compare model years

Complaint and recall counts across every year of this model

Mercedes-Benz 500SL by model year
YearComplaintsRecallsInvestigationsIssue Index
1992510—
1991Viewing310—
1990310—

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. Older model years have had longer for reports to accumulate.