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: 5 of 6 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.
Engine And Engine Cooling. Review the 2 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
Electrical System. Review the 1 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
Equipment. 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.
0 crash reports0 fire reports0 injury reports
What owners actually said
6 reports
143,000 miles · May 6, 2014
Steering
TL* THE CONTACT OWNS A 1996 MERCEDES S420. THE CONTACT STATED THAT WHILE DRIVING APPROXIMATELY 50 MPH, THE POWER STEERING SUDDENLY MALFUNCTIONED CAUSING THE VEHICLE TO STEER TO THE LEFT. THE VEHICLE WAS TAKEN TO AN INDEPENDENT MECHANIC, WHO DIAGNOSED THAT A CONNECTOR FROM THE TRANSMISSION TO THE ELECTRONIC CONTROL MODULE HAD FAI…
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TL* THE CONTACT OWNS A 1996 MERCEDES S420. THE CONTACT STATED THAT WHILE DRIVING APPROXIMATELY 50 MPH, THE POWER STEERING SUDDENLY MALFUNCTIONED CAUSING THE VEHICLE TO STEER TO THE LEFT. THE VEHICLE WAS TAKEN TO AN INDEPENDENT MECHANIC, WHO DIAGNOSED THAT A CONNECTOR FROM THE TRANSMISSION TO THE ELECTRONIC CONTROL MODULE HAD FAILED CAUSING TRANSMISSION FLUID TO FLOOD THE CONTROL MODULE. THE VEHICLE WAS NOT REPAIRED AND THE MANUFACTURER WAS NOT NOTIFIED OF THE DEFECT. THE FAILURE MILEAGE WAS 143,000.
NHTSA ODI #10586858
11,850 miles · Jun 30, 2011
Engine And Engine Cooling
1.I OWN A 1996 MERCEDES BENZ FOR 15 YEARS. WITH ONLY 11,850 MILES, THE TEMPERATURE / CLIMATE CONTROL MECHANISM FAILED DUE TO BEING DEFECTIVE PART. THIS WAS BROUGHT TO A MERCEDES BENZ SERVICE CENTER, HOWEVER IT WAS NOT FIXED WHICH I LEFT UNSETTLED AND UNSATISFIED. 3. IN ORDER TO QUICKLY HAVE THIS FIXED, I WENT TO ANOTHER PR…
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1.I OWN A 1996 MERCEDES BENZ FOR 15 YEARS. WITH ONLY 11,850 MILES, THE TEMPERATURE / CLIMATE CONTROL MECHANISM FAILED DUE TO BEING DEFECTIVE PART. THIS WAS BROUGHT TO A MERCEDES BENZ SERVICE CENTER, HOWEVER IT WAS NOT FIXED WHICH I LEFT UNSETTLED AND UNSATISFIED. 3. IN ORDER TO QUICKLY HAVE THIS FIXED, I WENT TO ANOTHER PRIVATE MECHANIC, WHICH THEY DULY IDENTIFIED THE PROBLEM AS A DEFECTIVE PART, HOWEVER THE PART WAS PROMPTLY FIXED. THE AMOUNT WAS $1,097.36. I HAVE SENT 2 LETTERS TO MERCEDES BENZ USA HEADQUARTERS AND GERMANY HEADQUARTERS REPORTING THE PROBLEM AS A DEFECTIVE ISSUE AND REQUESTING FOR COMPENSATION, HOWEVER THEY HAVE NOT RESPONDED REGARDING THIS MATTER. *TR
NHTSA ODI #10410070
202,000 miles · Aug 20, 2008
Equipment
I HEARD A CLICK AND THEN AC STOPPED BLOWING AIR. IT HAD BEEN BLOWING FINE BEFORE THIS AUDIBLE CLICK. RESEARCH I DID SAYS IT IS A FAULTY BLOWER REGULATOR WHICH SEEMS TO BE A COMMON OCCURRENCE FOR THIS MODEL. *TR
NHTSA ODI #10238986
121,000 miles · Aug 8, 2008
Engine And Engine Cooling
JUST CAME BACK FROM VACATION. CHECK ENGINE LIGHT WAS ON BEFORE. STOPPING AT THE GAS STATION WE NOTICED THE SMOKE COMING OUT THE HOOD. TEMPERATURE WAS RISING TO A 100 C. SINCE THEN EVEN IN LOCAL DRIVING TEMPERATURE GOES OVER NORMAL. I AM VERY CONCERNED. DID NOT CHECK WITH SERVICE YET. *TR
NHTSA ODI #10237453
90,000 miles · Feb 20, 2007
Electrical System
WIRING HARNESS IS DEFECTIVE. *NM
NHTSA ODI #10183005
Mileage unknown · Feb 22, 2006
Visibility
MY PASSENGER REAR WINDOW HAS COMPLETELY FALLEN INTO THE DOOR UPON TOUCHING THE WINDOW SWITCH. THIS HAS HAPPENED WHILE DRIVING AND IT IS A RECURRING PROBLEM. SINCE I HAVE HAD THE CAR, I HAVE REPAIRED THIS ISSUE THREE TIMES. I SUSPECT THAT MERCEDEZ IS USING WEAK PARTS AND IS NOT LOOKING INTO THIS ISSUE SERIOUSLY. THIS HAS HAPPE…
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MY PASSENGER REAR WINDOW HAS COMPLETELY FALLEN INTO THE DOOR UPON TOUCHING THE WINDOW SWITCH. THIS HAS HAPPENED WHILE DRIVING AND IT IS A RECURRING PROBLEM. SINCE I HAVE HAD THE CAR, I HAVE REPAIRED THIS ISSUE THREE TIMES. I SUSPECT THAT MERCEDEZ IS USING WEAK PARTS AND IS NOT LOOKING INTO THIS ISSUE SERIOUSLY. THIS HAS HAPPENED TO OTHERS WITH NEWER CARS BUT NOT AS FREQUENT. *NM
THE DRIVE BELT PULLEY ON THE ENGINE CAN DEVELOP FATIGUE CRACKS IN THE METAL AND BREAK. IF THE DRIVE PULLEY BREAKS, THE CAR WOULD NOT HAVE ENGINE COOLING, BATTERY CHARGING, AND/OR POWER STEERING.
Consequence & remedy
Consequence: LOSS OF THESE SYSTEMS CAN CAUSE THE CAR TO OVER HEAT, LOSE POWER FROM THE BATTERY, AND LOSS OF CONTROL OF THE CAR INCREASING THE POTENTIAL FOR A VEHICLE ACCIDENT.
Remedy: DEALERS WILL REPLACE THE ENGINE CRANKSHAFT DAMPER-PULLEY ON THESE VEHICLES.
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
0
No exact-year investigations in this snapshot.
1996 Mercedes Benz S Class Problems, Complaints & Recalls | Skip That Year
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