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: 14 of 18 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.
Electrical System. Review the 5 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
Steering. Review the 5 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
Seats. Review the 3 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 reports3 fire reports3 injury reports
What owners actually said
18 reports
248,000 miles · Apr 7, 2021
Steering
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…
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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.
NHTSA ODI #11406909
123,000 miles · Feb 13, 2017
Steering
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.
NHTSA ODI #10954293
Mileage unknown · May 3, 2016
Fuel/propulsion SystemStructure
SMELL GAS WHEN THE VEHICLE IS STARTED. RUST AROUND FRONT AND REAR FENDERS
NHTSA ODI #10862907
125,500 miles · Dec 27, 2014
Electrical SystemElectronic Stability Control (esc)Engine
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
NHTSA ODI #10668448
225,000 miles · Nov 26, 2014
Electrical System
THE BOSE DVD STEREO HAS NO SOUND EVERYTHING WORKS JUST NO SOUND THIS APPEAR TO BE A COMMON PROBLEM. *TR
NHTSA ODI #10661074
165,000 miles · Oct 6, 2014
Steering
TL* THE CONTACT OWNS A 2004 MERCEDES BENZ ML500. WHILE DRIVING VARIOUS SPEEDS, THE STEERING WHEEL BECAME LOOSE AND REQUIRED EXCESSIVE FORCE TO CONTROL THE WHEEL. THE CONTACT NOTICED FLUID LEAKING FROM THE VEHICLE. THE FAILURE HAS OCCURRED FOR THE PAST EIGHT MONTHS. THE CONTACT REFERENCED NHTSA CAMPAIGN NUMBER: 08V465000 (STEERIN…
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TL* THE CONTACT OWNS A 2004 MERCEDES BENZ ML500. WHILE DRIVING VARIOUS SPEEDS, THE STEERING WHEEL BECAME LOOSE AND REQUIRED EXCESSIVE FORCE TO CONTROL THE WHEEL. THE CONTACT NOTICED FLUID LEAKING FROM THE VEHICLE. THE FAILURE HAS OCCURRED FOR THE PAST EIGHT MONTHS. THE CONTACT REFERENCED NHTSA CAMPAIGN NUMBER: 08V465000 (STEERING). THE DEALER STATED THAT THE STEERING FLUID WAS LOW AND NEEDED TO BE REPLENISHED. THE VEHICLE WAS NOT REPAIRED AND THE MANUFACTURER WAS NOT NOTIFIED. THE APPROXIMATE FAILURE MILEAGE WAS 165,000.
NHTSA ODI #10641841
70,000 miles · Oct 17, 2013
Steering
TL* THE CONTACT OWNS A 2004 MERCEDES BENZ ML500. THE CONTACT STATED THAT THE STEERING WHEEL EXHIBITED A LOUD NOISE WHEN ATTEMPTING A TURN. THE MANUFACTURER WAS CONTACTED AND STATED THAT THE VEHICLE WAS NOT INCLUDED IN NHTSA CAMPAIGN NUMBER 08V465000 (STEERING). THE VEHICLE WAS NOT REPAIRED. THE APPROXIMATE FAILURE MILEAGE WAS …
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TL* THE CONTACT OWNS A 2004 MERCEDES BENZ ML500. THE CONTACT STATED THAT THE STEERING WHEEL EXHIBITED A LOUD NOISE WHEN ATTEMPTING A TURN. THE MANUFACTURER WAS CONTACTED AND STATED THAT THE VEHICLE WAS NOT INCLUDED IN NHTSA CAMPAIGN NUMBER 08V465000 (STEERING). THE VEHICLE WAS NOT REPAIRED. THE APPROXIMATE FAILURE MILEAGE WAS 70,000 AND THE APPROXIMATE CURRENT MILEAGE WAS 80,000.
NHTSA ODI #10548273
141,000 miles · Jan 31, 2012
SeatsInjury
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 …
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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
NHTSA ODI #10445967
110,000 miles · Feb 14, 2011
Steering
2004 MERCEDES BENZ ML500. VEHICLE WAS SERVICED / REPAIRED BY ZEMBRICK MERCEDES IN ADISON WISCONSIN ON FEB 3 2011. THE REPAIRS / SERVICE INCLUDED REPLACING A SEAL ON THE POWER STEERING PUMP. WITHIN DAYS OF THE REPAIR THE POWER STEERING UNIT LEAKED ALL IT'S FLUID FROM A HOSE CLAMP. FOUND THE RECALL 08V465000 FOR THIS PROBLEM WHICH…
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2004 MERCEDES BENZ ML500. VEHICLE WAS SERVICED / REPAIRED BY ZEMBRICK MERCEDES IN ADISON WISCONSIN ON FEB 3 2011. THE REPAIRS / SERVICE INCLUDED REPLACING A SEAL ON THE POWER STEERING PUMP. WITHIN DAYS OF THE REPAIR THE POWER STEERING UNIT LEAKED ALL IT'S FLUID FROM A HOSE CLAMP. FOUND THE RECALL 08V465000 FOR THIS PROBLEM WHICH PER THE RECALL COVERED ALL 1998-2004 MB ML'S . HOWEVER, THE DEALERSHIP AND MBUSA STATES THIS RECALL IS VIN SPECIFIC AND THIS VEHICLE IS NOT COVERED UNDER THIS RECALL. THE PROBLEM IS OBVIOUSLY STILL PRESENT AND ONGOING, HOWEVER MBUSA SEEMS TO BE APPLYING THIS RECALL TO SUIT THEIR INTERPRETATION. THE PROBLEM HAS NOT BEEN FIXED AND THE HAZARDS ORIGINALLY IDENTIFIED HAS NOT BEEN ADDRESSED AND CORRECTED. *TR
NHTSA ODI #10382577
60,000 miles · Jan 12, 2011
Electrical SystemExterior LightingFire
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
NHTSA ODI #10376372
Official recalls
0
No recalls in this snapshot.
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.
2004 Mercedes Benz ML500 Problems, Complaints & Recalls | Skip That Year