2004 Mercedes-Benz S 500 Problems
Owner-reported complaints filed with NHTSA, grouped by component
Data refreshed
What this page shows
Everything below is an owner-reported complaint submitted to NHTSA about the 2004 Mercedes-Benz S 500, grouped by the component NHTSA recorded on the report. These are not confirmed defects, and they are not recalls. NHTSA does not verify most reports before publishing them, and a category with more reports in it is not evidence that a part is defective.
Complaints are reports submitted by owners and drivers to NHTSA. They are not verified and do not establish that a defect exists.
Reports by component
Ranked by how many owner reports name each component category
- Electrical626.1%
- Brakes313.0%
- Suspension313.0%
- Airbags28.7%
- Exterior lighting28.7%
- Steering28.7%
- Heating & air conditioning14.3%
- Other / unspecified14.3%
- Seat belts14.3%
- Engine14.3%
- Interior & seats14.3%
Percentages are of component mentions. A single complaint can name more than one component, so these do not sum to the total complaint count.
Each component in detail
What the reports in each category say, in the owners' own words
Electrical
Reports naming the electrical system — wiring, battery, charging, control modules, infotainment and electrical accessories.
From owner reports, verbatim
THE TRUNK WIRING HARNESS HAVE WIRES THAT THE PROTECTIVE COVERING HAS SHRED AND ALL COME APART. CAUSING WRITERS TO TOUCH. LOCKS NOT TO LOCK. TRUCK WON'T OPEN AND LICENSE PLATES LIGHTS ARE OUT
LICENSE PLAYE LIGHT OUT SHORT CAUSES SRS LIGHT TO COME ON AND HAVE TO BE REPROGRAMMED. THERE IS NOW AN SIS DEFECTIVE LIGHT DUE TO THE WIRING. MY TRUCK DOES NOT POWER CLOSE. HAPPENS AT ALL TIMES. AND WHILE TURNING IT CAUSED AN ERROR FOR TURN LIGHTS
Too few reports in this category for a page of its own — they appear in the full complaint list.
Brakes
Reports naming service brakes, the antilock braking system, brake hoses, master cylinders or the parking brake.
From owner reports, verbatim
SYSTEMATIC WATER INTRUSION BY AIR COWL DISABLED ELECTRONICS WHILE DRIVING AND ALSO LONG TERM CAUSED A HEALTH ISSUE RESPIRATORY NEUROLOGICAL - TWO YEARS HOMEBOUND AFTER WAS FINALLY DIAGNOSED W/UNKNOWN CANCER
DURING RAIN STORM, WATER SEEPEED INO AIR COWL INTO CABIN-PASSENGER SIDE- FLOODED FLOOR EVENTUALLY SAM ELECTRONIC MODULE UNDER FLOOR WAS DAMAGED AND SHUT OFF ELECTRONICS IN AUTOMOBILE WHILE DRIVING AT HIGH SPEED ON FREEWAY- WITH OUT POWER CONTROLS OPERATING IT MADE DRIVING AND STOPPING THE CAR A VERY DANGEROUS FEAT EVENTUALLY WENT OFF ROAD INTO GUARDRAIL AND STOPPED. MERCEDES BENZ HAS BEEN AWARE (A LAWSUIT WAS FILED IN CA) OF DESIGN DEFECT OF AIR COWL DRAIN CLOGGING AND FLOODING CABIN BUT HAS KEPT THIS DANGEROUS FLAW FROM OWNERS EVEN THOUGH WE LEARNED THEY HAVE FOR SALE AN UPDATE KIT TO PREVENT THIS AT OWNERS EXPENSE. OUR CASE FORTUNATELY DID NOT CAUSE A FATALITY BUT IT COULD HAVE EASILY HAD IF THE VEHICLE WAS NOT BEING DRIVEN BY AN EXPERT DRIVER- LOOSING POWER CONTROLS ON A RAIN STORM/ WET ROAD WITH NO POWER ACCESORIES / BRAKES IS NOT A SAFE CONDITION WHICH NEEDS TO BE ADDRESSED ASAP FOLLOWING THIS MISHAP WE CONTACTED LOCAL MERCEDS DEALERSHIP IN PLANO,TX AUTOHAUS WHO RESPONDED BEING UNAWARE AND HAD NO HISTORY OF SUCH PROBLEM- APPARENTLY MERCEDES IS BEING WRONGFULLY SECRETIVE OF THIS SERIOUS FLAW NOT ONLY TO CONSUMERS BUT THEIR OWN PEOPLE 9
Too few reports in this category for a page of its own — they appear in the full complaint list.
Suspension
Reports naming suspension components — springs, struts, shocks, control arms and related hardware.
From owner reports, verbatim
The dash board lights lose their ability to illuminate the dashboard and the back airbags on the suspension keep deflating
SUSPENSION PROBLEM
Too few reports in this category for a page of its own — they appear in the full complaint list.
Airbags
Reports naming the air-bag system — deployment behaviour, inflators, sensors and warning lights.
From owner reports, verbatim
LICENSE PLAYE LIGHT OUT SHORT CAUSES SRS LIGHT TO COME ON AND HAVE TO BE REPROGRAMMED. THERE IS NOW AN SIS DEFECTIVE LIGHT DUE TO THE WIRING. MY TRUCK DOES NOT POWER CLOSE. HAPPENS AT ALL TIMES. AND WHILE TURNING IT CAUSED AN ERROR FOR TURN LIGHTS
ON MAY 16, 2014, I PURCHASED A 2004 MERCEDES BENZ S500 WITH 61,649 MILES FROM CAR CREDIT NATION.AFTER A FEW WEEKS OF DRIVING THE VEHICLE, AND VISITING WITH THE MERCEDES BENZ DEALERSHIP FOR ROUTINE INSPECTIONS, WE FOUND FURTHER ISSUES WITH THIS VEHICLE, THAT WE FELT WERE LIFE THREATENING AND HAZARDOUS TO THE ROAD, OTHER DRIVERS, AND OUR SAFETY. MERCEDES BENZ STATED THAT THE ROTORS AND BRAKES WERE EXTREMELY BAD ON THE VEHICLE, WHICH THEY NOTICE AT THE TIME OF THEIR INSPECTION OF THE VEHICLE.WE NOTICED THAT THERE WERE ELECTRICAL ISSUES WITH THE VEHICLE, WHERE THE LIGHTS IN THE VEHICLE WOULD NOT CUTOFF,THE ALARM SYSTEM WOULD CONTINUE TO RUN AFTER THE VEHICLE WAS CUT OFF AND LOCKED, THE COMMAND CENTER SHUTTING OFF WHILE OPERATING THE VEHICLE, AND THE SRS AND TIRE PRESSURE LIGHT DISPLAYING ON THE DASHBOARD CENTER. ALSO WHILE OUT ONE NIGHT AT A FAMILY EVENT, HAS WE WERE LEAVING THE EVENT DRIVING HOME WE APPROACHED A TRAFFIC LIGHT TO COME TO A COMPLETE STOP AND THE CAR WOULD NOT STOP,THE BREAKS WERE TOUCHING THE FLOOR AND WE STOPPED SEVERAL FEET THROUGH THE LIGHT NEARLY CROSSING THE INTERSECTION. THIS WAS LIFE THREATENING AND FRIGHTENING FOR ALL PASSENGERS.ON JANUARY 29, 2015 THE VEHICLE STOPPED IN THE MIDDLE OF TRAFFIC COMPLETELY SHUTTING OFF, CAUSING A DANGEROUS SITUATION, WHICH COULD HAVE CAUSED FURTHER DAMAGES TO THE VEHICLE, OUR SAFETY AND OTHERS. FORTUNATELY WE WERE WITHIN DISTANCE OF THE MERCEDES BENZ DEALERSHIP WHO IMMEDIATELY ASSISTED US. HE STATED THAT THE CAUSE FOR THE SHUT OFF MAY BE CAUSED BY ELECTRICAL FAILURES, SUCH AS THE ALARM SYSTEM, AND OTHER ELECTRICAL FAILURES. THE 2004 MERCEDES BENZ THAT WE PURCHASED ON MAY 16, 2014 IN OUR ESTIMATION IS A TOTAL LEMON AND IS NOT WORTH THE MONEY WE HAVE PAID. OUR VEHICLE HAS BEEN IN THE REPAIR FACILITY FOR 30 DAYS, BEFORE BEING REPOSSESSED. *TR
Too few reports in this category for a page of its own — they appear in the full complaint list.
Exterior lighting
Reports naming headlights, tail lights, turn signals and other exterior lighting.
From owner reports, verbatim
The dash board lights lose their ability to illuminate the dashboard and the back airbags on the suspension keep deflating
LICENSE PLAYE LIGHT OUT SHORT CAUSES SRS LIGHT TO COME ON AND HAVE TO BE REPROGRAMMED. THERE IS NOW AN SIS DEFECTIVE LIGHT DUE TO THE WIRING. MY TRUCK DOES NOT POWER CLOSE. HAPPENS AT ALL TIMES. AND WHILE TURNING IT CAUSED AN ERROR FOR TURN LIGHTS
Too few reports in this category for a page of its own — they appear in the full complaint list.
Steering
Reports naming the steering system — racks, columns, power-steering assist and steering linkage.
From owner reports, verbatim
SYSTEMATIC WATER INTRUSION BY AIR COWL DISABLED ELECTRONICS WHILE DRIVING AND ALSO LONG TERM CAUSED A HEALTH ISSUE RESPIRATORY NEUROLOGICAL - TWO YEARS HOMEBOUND AFTER WAS FINALLY DIAGNOSED W/UNKNOWN CANCER
DURING RAIN STORM, WATER SEEPEED INO AIR COWL INTO CABIN-PASSENGER SIDE- FLOODED FLOOR EVENTUALLY SAM ELECTRONIC MODULE UNDER FLOOR WAS DAMAGED AND SHUT OFF ELECTRONICS IN AUTOMOBILE WHILE DRIVING AT HIGH SPEED ON FREEWAY- WITH OUT POWER CONTROLS OPERATING IT MADE DRIVING AND STOPPING THE CAR A VERY DANGEROUS FEAT EVENTUALLY WENT OFF ROAD INTO GUARDRAIL AND STOPPED. MERCEDES BENZ HAS BEEN AWARE (A LAWSUIT WAS FILED IN CA) OF DESIGN DEFECT OF AIR COWL DRAIN CLOGGING AND FLOODING CABIN BUT HAS KEPT THIS DANGEROUS FLAW FROM OWNERS EVEN THOUGH WE LEARNED THEY HAVE FOR SALE AN UPDATE KIT TO PREVENT THIS AT OWNERS EXPENSE. OUR CASE FORTUNATELY DID NOT CAUSE A FATALITY BUT IT COULD HAVE EASILY HAD IF THE VEHICLE WAS NOT BEING DRIVEN BY AN EXPERT DRIVER- LOOSING POWER CONTROLS ON A RAIN STORM/ WET ROAD WITH NO POWER ACCESORIES / BRAKES IS NOT A SAFE CONDITION WHICH NEEDS TO BE ADDRESSED ASAP FOLLOWING THIS MISHAP WE CONTACTED LOCAL MERCEDS DEALERSHIP IN PLANO,TX AUTOHAUS WHO RESPONDED BEING UNAWARE AND HAD NO HISTORY OF SUCH PROBLEM- APPARENTLY MERCEDES IS BEING WRONGFULLY SECRETIVE OF THIS SERIOUS FLAW NOT ONLY TO CONSUMERS BUT THEIR OWN PEOPLE 9
Too few reports in this category for a page of its own — they appear in the full complaint list.
Heating & air conditioning
Reports naming the heating, ventilation and air-conditioning system.
From owner reports, verbatim
TL* THE CONTACT OWNS A 2004 MERCEDES BENZ S500. THE CONTACT STATED THAT THE VENT CONTROLS FAILED TO ACTIVATE THE AIR CONDITIONING AND THE HEATING SYSTEM. THE VEHICLE WAS TAKEN TO AN INDEPENDENT MECHANIC, WHO DIAGNOSED THAT THE MOTOR REGULATOR AND THE AIR CONDITIONER BLOWER NEEDED TO BE REPLACED. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 103,000.
Too few reports in this category for a page of its own — they appear in the full complaint list.
Other / unspecified
Reports whose component NHTSA recorded as unknown, or that do not map to one of the categories above.
From owner reports, verbatim
WHILE ATTEMPTING TO CHANGE THE DRIVER SIDE FRONT TIRE THE LUG WRENCH ITSELF FAILED. THE LUG WRENCH CAME APART LEAVING THE HEAD STILL ATTACHED TO THE LUG NUT WITHOUT THE HANDLE CAUSING FORWARD MOMENTUM INJURY TO HEAD AND SHOULDER. *TR
Too few reports in this category for a page of its own — they appear in the full complaint list.
Seat belts
Reports naming seat belts, buckles, retractors and pretensioners.
From owner reports, verbatim
I HAVE A 2004 MERCEDES-BENZ AND THE SEAT BELT LOOK NEW BUT WILL NOT RETRACT. I AM THE SECOND OWNER OF THE CAR. I CALLED THE COMPANY IN USA AND THEY WILL NOT REPLACE THE SEAT BELT ASSEMBLY FREE OF CHARGE BECAUSE OF THE AGE OF THE CAR. MY BELIEF THAT THE SEAT BELT IS A SAFETY COMPONENTS AND THE COMPANY SHOULD REPLACE IT FREE OF CHARGE SINCE IT IS THE LAW IN MASSACHUSEETS TO WEAR A SEAT BELT. BUT I COULD NOT WEAR BECAUSE THE BELT IS STUCK. I SPENT $1141.62 TO REPLACE THE DRIVERS FRONT SEAT BELT ASSEMBLY ON NOVEMBER 07 2013. PLEASE LET ME KNOW IS THERE ANY SAFETY RECALL ON THIS CAR REGARDING THE SEAT BELT RETRACT ISSUES. THANK YOU FOR YOUR ATTENTION ON THIS ISSUES AND MAKE SURE THE BENZ MANUFACTURE MAKING THE SEAT BELT MECHANISM WORKING FOR LIFE TIME OR REPLACE IT FREE OF CHARGE FOR CONSUMERS. *TR
Too few reports in this category for a page of its own — they appear in the full complaint list.
Engine
Reports naming the engine itself — including stalling, misfires, oil consumption, cooling and internal engine components.
From owner reports, verbatim
SYSTEMATIC WATER INTRUSION BY AIR COWL DISABLED ELECTRONICS WHILE DRIVING AND ALSO LONG TERM CAUSED A HEALTH ISSUE RESPIRATORY NEUROLOGICAL - TWO YEARS HOMEBOUND AFTER WAS FINALLY DIAGNOSED W/UNKNOWN CANCER
Too few reports in this category for a page of its own — they appear in the full complaint list.
Interior & seats
Reports naming seats, latches, locks, linkages and interior fittings.
From owner reports, verbatim
TL* THE CONTACT OWNS A 2004 MERCEDES BENZ S500. WHILE DRIVING APPROXIMATELY 65 MPH, THE INSTRUMENT PANEL FAILED. THE DEALER STATED THAT THE INSTRUMENT CLUSTER NEEDED TO BE REPLACED. THE VEHICLE WAS NOT REPAIRED. THE CONTACT STATED THAT THE VIN WAS NOT INCLUDED IN NHTSA CAMPAIGN NUMBER: 06V028000 (INTERIOR LIGHTING). THE MANUFACTURER WAS NOTIFIED. THE APPROXIMATE FAILURE MILEAGE WAS 158,000. UPDATED 12/2/14*CN UPDATED 08/30/2017*CT
Too few reports in this category for a page of its own — they appear in the full complaint list.
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
- NHTSA Office of Defects Investigation — owner-reported complaints and the components recorded on them
Data on this page last refreshed .