2004 Mercedes-Benz ML500 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 ML500, 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
- Steering520.8%
- Electrical520.8%
- Exterior lighting28.3%
- Heating & air conditioning28.3%
- Brakes28.3%
- Tires & wheels14.2%
- Transmission14.2%
- Body & structure14.2%
- Visibility14.2%
- Driver assistance14.2%
- Engine14.2%
- Fuel system14.2%
- Interior & seats14.2%
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
Steering
Reports naming the steering system — racks, columns, power-steering assist and steering linkage.
From owner reports, verbatim
TL* THE CONTACT OWNS A 2004 MERCEDES-BENZ ML500. THE CONTACT STATED WHILE DRIVING 35 MPH, HE LOS CONTROL OF THE STEERING WHEEL. THE CONTACT STATED THAT THE STEERING WHEEL TURNED 360 DEGREES HOWEVER, THE WHEELS REMAINED IN A STRAIGHTFORWARD POSITION. THE CONTACT DEPRESSED THE BRAKE PEDAL AND THE VEHICLE TO DRIFTED TO THE SHOULDER OF THE ROAD. THE CONTACT STATED THAT SEVERAL UNKNOWN WARNING LIGHTS ILLUMINATED. THE VEHICLE WAS TOWED MERCEDES BENZ OF CARY (2400 AUTO PARK BLVD, CARY, NC 27511, 919-380-1800) BUT WAS NOT YET DIAGNOSED NOR REPAIRED. THE MANUFACTURE WAS NOT NOTIFIED OF THE FAILURE. THE FAILURE MILEAGE WAS 248,000.
TL* THE CONTACT OWNS A 2004 MERCEDES-BENZ ML500. WHILE DRIVING 65 MPH, THE POWER STEERING SEIZED. A MECHANIC CONFIRMED THAT THE POWER STEERING HOSE NEEDED TO BE REPLACED. THE MANUFACTURER WAS NOTIFIED OF THE ISSUE. THE FAILURE MILEAGE WAS 123,000.
Too few reports in this category for a page of its own — they appear in the full complaint list.
Electrical
Reports naming the electrical system — wiring, battery, charging, control modules, infotainment and electrical accessories.
From owner reports, verbatim
THIS COULD BE RELATED TO A SOFTWARE PROBLEM IN ALL ML CLASS. 1. OBD SYSTEM CAUSE THE CHECK ENGINE LIGHT TO ILLUMINATE INCORRECTLY 2. STUCK FUEL-LEVEL SENSOR CAUSE TO REPORT INCORRECTLY 3. THE SPEEDOMETER OUT OF TOLERANCE IS REPORTING INCORRECTLY 4. OBD SYSTEM IS REPORTING INCORRECTLY CAUSING FAULTS IN SYSTEMS. *TR
THE BOSE DVD STEREO HAS NO SOUND EVERYTHING WORKS JUST NO SOUND THIS APPEAR TO BE A COMMON PROBLEM. *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
DURING REGULAR VEHICLE USE THE FRONT RIGHT HEADLIGHT STOPPED WORKING. UPON INSPECTION IT WAS FOUND THAT THE HEADLIGHT HOLDER HAD MELTED UNDER EXTREME TEMPERATURES DUE TO A MANUFACTURERS DEFECT IN THE WIRING HARNESS. *TR
I WANT TO PROTEST IN THE LOUDEST VOICE THAT I HAVE AS A AUTOMOBILE DRIVER THE USE BY SOME RECENT MODEL CARS OF HIGH INTENSITY HEADLIGHTS. I AM NOT REFERRING TO HIGH BEAMS.......THESE LIGHTS ARE FAR WORSE THAN HIGH BEAMS. I AM BLINDED BY THESE LIGHTS AND FIND MY EYES TURNING TO THEM INVOLUNTARILY. I FEAR THAT THEY WILL BE RESPONSIBLE FOR MANY ACCIDENTS IF OTHER DRIVERS REACT AS I DO. I SEE ABSOLUTELY NO NEED FOR SUCH LIGHTS ON OUR HIGHWAYS. THIS IS THE FIRST COMPLIANT I HAVE EVER SUBMITTED IN 57 YEARS OF DRIVING! *AK
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
2004 MERCEDES BENZ ML500 DRIVER SEAT CAUGHT FIRE WHILE DRIVING. CONSUMER STATES THAT DUE TO THE SEAT CATCHING FIRE HE SUFFERED MILD BURNS ON THE LEFT HIP. *KB THE HEATING PAD IN THE DRIVERS SEAT SHORTED OUT AND CAUSED THE LEATHER AND SEAT CUSHION TO BURN. *JB
TL*THE CONTACT OWNS A 2004 MERCEDES BENZ ML500. WHILE DRIVING 35 MPH, THE DRIVER SEAT BECAME EXTREMELY HOT WHILE THE WARMER FUNCTION WAS ACTIVATED. THE VEHICLE WAS PULLED OVER AND THE SEAT WAS RED AND SMOKING. THE CONTACT PARKED THE VEHICLE FOR 30 MINUTES AND THEN RESTARTED IT AND DROVE HOME. THE CONTACT SUFFERED BURNS ON HIS LEFT SIDE. THE DEALER INSPECTED THE VEHICLE. THE CURRENT AND FAILURE MILEAGES WERE 50,200. UPDATED 01-10-08. *KB THE DEALER STATED DEFROSTER NOT WORKING. UPDATED 12/31/07 *TR
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
OVERLY EXCESSIVE BRAKE PAD AND BRAKE ROTOR WEAR ASSOCIATED WITH 2004 MERCEDES ML500 SUV. REPLACEMENT/REPAIR COST NOT COVERED BY MERCEDES NEW VEHICLE WARRANTY AND REPAIR COSTS IN EXCESS OF $1300.00. *NM
I HAVE RETURNED MY SUV TO MERCEDES ABOUT 5 TIMES TO HAVE THE BRAKES REPLACED BECAUSE THEY SQUEAL WHEN STOPPING. I HAVE BEEN TOLD MY MERCEDES THAT THERE IS NOTHING THAT CAN BE DONE BECAUSE ALL DISC BRAKES SQUEAL. I FIND THIS HARD TO BELIEVE BECAUSE I HAVE HAD MANY CARS WITH DISC BRAKES OVER THE YEARS. I PICKED THE CAR UP ON 2/3/05 AND IT WAS SQUEALING AGAIN ON 2/4/05. *JB
Too few reports in this category for a page of its own — they appear in the full complaint list.
Tires & wheels
Reports naming tires, wheels, hubs, or the tire-pressure monitoring system.
From owner reports, verbatim
DT:CONSUMER HAD TWO DUNLOP SP 5000 TIRES THAT WERE CUPPED. AS A RESULT OF THE CUPPING, THE CONSUMER PURCHASED 4 NEW TIRES. CONSUMER HAD AN ALIGNMENT AND BALANCING DONE. THE CONSUMER INDICATED THE VEHICLE OPERATED POORLY AT LOW SPEED, IT FELT LIKE THE VEHICLE WAS ROCKING BACK AND FORTH. AT 18 MPH VEHICLE VIBRATED. CONSUMER STATED THAT VEHICLE MADE HIM ILL TO DRIVE DUE TO THE VIBRATION. GOODYEAR GAVE CONSUMER MONEY BACK AND CONSUMER RETURNED THE TIRES TO GOODYEAR. CONSUMER WENT TO A MERCEDES DEALER AND THE DEALER PERFORMED AN ALIGNMENT, BALANCING AND DIAGNOSTIC. DEALER PUT SAME TIRES ON VEHICLE AND CONSUMER HAD THE SAME PROBLEM WITH NEW TIRES AS WITH THE PREVIOUS SET. *AK *JB
Too few reports in this category for a page of its own — they appear in the full complaint list.
Transmission
Reports naming the automatic or manual transmission, including shifting behaviour, shudder, slipping and transmission control modules.
From owner reports, verbatim
CAR GETS STUCK IN THE PARK GEAR AND HAS TO BE TOWED. DURING THE SECOND INCIDENT, A MECHANIC PUT A PEN INTO A SLOT IN THE GEAR BOX AND IT SLIPPED INTO NEUTRAL. THIS IS A DEFECT THE MANUFACTURER KNEW ABOUT, OTHERWISE HOW DID THEY KNOW WHAT TO DO? *JB
Too few reports in this category for a page of its own — they appear in the full complaint list.
Body & structure
Reports naming the vehicle structure, frame, body panels, doors, hood and trim.
From owner reports, verbatim
SMELL GAS WHEN THE VEHICLE IS STARTED. RUST AROUND FRONT AND REAR FENDERS
Too few reports in this category for a page of its own — they appear in the full complaint list.
Visibility
Reports naming windshields, glass, wipers, defrosters and mirrors.
From owner reports, verbatim
TL*THE CONTACT OWNS A 2004 MERCEDES BENZ ML500. WHILE DRIVING 35 MPH, THE DRIVER SEAT BECAME EXTREMELY HOT WHILE THE WARMER FUNCTION WAS ACTIVATED. THE VEHICLE WAS PULLED OVER AND THE SEAT WAS RED AND SMOKING. THE CONTACT PARKED THE VEHICLE FOR 30 MINUTES AND THEN RESTARTED IT AND DROVE HOME. THE CONTACT SUFFERED BURNS ON HIS LEFT SIDE. THE DEALER INSPECTED THE VEHICLE. THE CURRENT AND FAILURE MILEAGES WERE 50,200. UPDATED 01-10-08. *KB THE DEALER STATED DEFROSTER NOT WORKING. UPDATED 12/31/07 *TR
Too few reports in this category for a page of its own — they appear in the full complaint list.
Driver assistance
Reports naming forward-collision avoidance, lane keeping, back-over prevention, cruise control and related electronic driver-assistance systems.
From owner reports, verbatim
THIS COULD BE RELATED TO A SOFTWARE PROBLEM IN ALL ML CLASS. 1. OBD SYSTEM CAUSE THE CHECK ENGINE LIGHT TO ILLUMINATE INCORRECTLY 2. STUCK FUEL-LEVEL SENSOR CAUSE TO REPORT INCORRECTLY 3. THE SPEEDOMETER OUT OF TOLERANCE IS REPORTING INCORRECTLY 4. OBD SYSTEM IS REPORTING INCORRECTLY CAUSING FAULTS IN SYSTEMS. *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
THIS COULD BE RELATED TO A SOFTWARE PROBLEM IN ALL ML CLASS. 1. OBD SYSTEM CAUSE THE CHECK ENGINE LIGHT TO ILLUMINATE INCORRECTLY 2. STUCK FUEL-LEVEL SENSOR CAUSE TO REPORT INCORRECTLY 3. THE SPEEDOMETER OUT OF TOLERANCE IS REPORTING INCORRECTLY 4. OBD SYSTEM IS REPORTING INCORRECTLY CAUSING FAULTS IN SYSTEMS. *TR
Too few reports in this category for a page of its own — they appear in the full complaint list.
Fuel system
Reports naming fuel storage or delivery — tanks, pumps, lines, injectors and fuel leaks.
From owner reports, verbatim
SMELL GAS WHEN THE VEHICLE IS STARTED. RUST AROUND FRONT AND REAR FENDERS
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
I WAS DRIVING ON THE HIGHWAY AND THE HEATED SEAT WAS TURNED ON THE PASSENGER SIDE OF MY MERCEDES ML 500 WITH MY 17 DAUGHTER SITTING IN THE SEAT. THE CAR STARTED TO SMELL AND MY DAUGHTERS SEAT FELT HOT TO HER. SHE TRIED TO MOVE HER SELF OVER AND BURNT THE PALM OF HER HAND ON THE SIDE OF THE SEAT. THE HEATED SEAT HAD BEEN BURNING AT A VERY HOT TEMPERATURE AND WAS MELTING THE LEATHER ON THE SEAT. I IMMEDIATELY TURNED OFF THE SEAT AND OPENED THE WINDOWS TO HELP COOL IT OFF. IT TOOK 30 MINUTES OR MORE FOR THE SEAT TO COOL OFF IN THAT SPOT. MY DAUGHTER JUMPED TO THE BACK SEAT WHILE IT WAS STILL HOT SO THAT SHE WOULD NOT GET BURNED AGAIN. *TT
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 .