DISCOVERED BRITTLE, BROKEN AND MISSING WIRING INSULATION ON THE HEADLIGHT WIRING INSIDE THE HEADLAMP ASSEMBLY. THIS WAS A DANGEROUS SITUATION THAT ALLOWED THE POSITIVE AND NEGATIVE WIRES TO COME IN CONTACT WITH EACH OTHER CREATING A SHORT.
2004 Mercedes Benz ML350
Owner reports · Recalls · Investigations
Similar to other model years
Owner complaints for the 2004 Mercedes Benz ML350 do not stand out strongly from the model-year median of 51.
Counts are not adjusted for sales, age, mileage exposure or reporting. A lower count does not establish that a car is problem-free.
About this comparison →Model-year median: 51
0Recall campaignsView recall details →
0InvestigationsView investigation details →
Check a VIN with NHTSA ↗ Model-level counts do not show whether a particular VIN is affected or repaired.
Inspection summary
2004 Mercedes Benz ML350
NHTSA snapshot: September 18, 2026. 35 owner complaints · 0 recall campaigns · 0 investigations.
Counts are not failure probabilities and are not adjusted for sales, age, mileage exposure or reporting. One report may name several categories. Comparison method and limitations.
Top reported categories (up to 5)
- Steering: 6 reports
- Air Bags: 5 reports
- Electrical System: 4 reports
- Seats: 4 reports
- Engine And Engine Cooling: 3 reports
Full reported-category list and vehicle report
Recall links
No recall campaigns in this snapshot.
Check a VIN with NHTSA. Model-level history does not establish whether a particular VIN is affected or repaired.
Print the top reported categories, recall links, snapshot date and comparison limits.
How this year compares
Owner complaints by model year
Compare all ML350 years →Counts vary with age, sales, mileage exposure and reporting. They are not failure rates.
What owners reported most
All reported categories
Tap a category to read its complaints. One report may name several components.
When problems were reported
Mileage at the reported incident
28 reports with mileage · 7 unknown
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.
- Steering. Review the 6 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Air Bags. Review the 5 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Electrical System. Review the 4 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
NHTSA owner reports · September 18, 2026 snapshot.
Electrical System complaints
4 reportsDURING A ROUTINE CHANGE OF A HEADLIGHT LAMP, THE MAINTENANCE TECHNICIAN DISCOVER THAT THE INSULATION ON ALL FOUR WIRES IN THE LEFT FRONT HEADLIGHT ASSEMBLY WERE CRACKED, DISINTEGRATING AND MISSING LEAVING THE BARE WIRES EXPOSED. THE MAINTENANCE TECHNICIAN WOULD NOT CHANGE THE BULB UNTIL A NEW WIRING HARNESS WAS FABRICATED AND T…
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DURING A ROUTINE CHANGE OF A HEADLIGHT LAMP, THE MAINTENANCE TECHNICIAN DISCOVER THAT THE INSULATION ON ALL FOUR WIRES IN THE LEFT FRONT HEADLIGHT ASSEMBLY WERE CRACKED, DISINTEGRATING AND MISSING LEAVING THE BARE WIRES EXPOSED. THE MAINTENANCE TECHNICIAN WOULD NOT CHANGE THE BULB UNTIL A NEW WIRING HARNESS WAS FABRICATED AND THE DISCREPANCY WAS CORRECTED. THIS IS A DANGEROUS SITUATION. THE BARE WIRES ARE IN AN ENCLOSED HEADLAMP ASSEMBLY, CONTACTING FLAMMABLE MATERIALS. A SHORT IN THESE WIRES CAN LEAD TO SYSTEM FAILURES, OVERHEATING AND FIRE IN THE HEADLAMP AREA. RECOMMEND A RECALL FOR INSPECTION AND IF THIS DISCREPANCY IS DISCOVERED, RECOMMEND AN IMMEDIATE REPLACEMENT OF THE WIRES IN THE HEADLAMP ASSEMBLY.
WHILE DRIVING 2004 MERCEDES BENZ ML350 ON PUBLIC STREET THE ENGINE LOST ALL POWER WHILE MOVING AT 30 - 35 MPH. LOST BOTH POWER STEERING CONTROL AND POWER BRAKING ABILITY AS A RESULT. WAS ABLE TO AVOID COLLISIONS AND COASTED INTO AN OFF STREET AREA SAFELY. UNDER OTHER CIRCUMSTANCES ( HIGH SPEED FREEWAY TRAVEL ) ACCIDENT MAY HAVE …
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WHILE DRIVING 2004 MERCEDES BENZ ML350 ON PUBLIC STREET THE ENGINE LOST ALL POWER WHILE MOVING AT 30 - 35 MPH. LOST BOTH POWER STEERING CONTROL AND POWER BRAKING ABILITY AS A RESULT. WAS ABLE TO AVOID COLLISIONS AND COASTED INTO AN OFF STREET AREA SAFELY. UNDER OTHER CIRCUMSTANCES ( HIGH SPEED FREEWAY TRAVEL ) ACCIDENT MAY HAVE BEEN CERTAIN. CAUSE DETERMINED TO BE FAULTY CRANK SENSOR. THIS SEEMS TO BE COMMON PROBLEM WITH THIS VINTAGE VEHICLE AND CAME AS NO SURPRISE TO MY MECHANIC. THIS IS ONE OF THE MORE FRIGHTENING DRIVING EXPERIENCES THAT I'VE HAD AND AM GRATEFUL THAT IT DID NOT OCCUR WHEN MY SPOUSE WAS DRIVING THIS VEHICLE; SHE WOULD HAVE HAD NO IDEA WHAT WAS HAPPENING OR WHAT TO DO. PLEASE LOOK INTO THIS PROBLEM. IF IT DOESN'T FALL UNDER THE CLASSIFICATION OF A TRANSPORTATION SAFETY ISSUE THEN THE DOT NEEDS TO REEVALUATE WHAT ITS MISSION IS. *TR
THANK YOU FOR YOUR RESPONSES BUT WE ARE VERY DISAPPOINTED AND VERY FRUSTRATED WITH YOUR RESPONSE. DURING THESE 2 YEAR THINGS HAVE GONE WRONG. WE DID CONTACT MERCEDES-BENZ HEADQUARTERS..MARKET TOO MANY TIMES AND EXPLAIN ABOUT US CAR. BUT THEY ARE IGNORE NOW WE ARE IN THE PROCESS OF LAUNCHING A LAWSUIT TO REPLACE MY 04 ML 350 ON…
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THANK YOU FOR YOUR RESPONSES BUT WE ARE VERY DISAPPOINTED AND VERY FRUSTRATED WITH YOUR RESPONSE. DURING THESE 2 YEAR THINGS HAVE GONE WRONG. WE DID CONTACT MERCEDES-BENZ HEADQUARTERS..MARKET TOO MANY TIMES AND EXPLAIN ABOUT US CAR. BUT THEY ARE IGNORE NOW WE ARE IN THE PROCESS OF LAUNCHING A LAWSUIT TO REPLACE MY 04 ML 350 ON THE BASIS OF SAFETY. THE ENGINE FAILED 18 TIMES ON THE ROAD (IN ADDITION TO ALL KINDS OF OTHER PROBLEMS). WE ARE IN CALIFORNIA USA--2004 MERCEDES BENZ ML350 - LIST PROBLEMS AND MUCH TIME SPENT IN THE SERVICE DEPARTMENT-- 2004 MERCEDES BENZ ML350 IS THE WORST AUTOMOBILE I HAVE EVER PURCHASED. IT HAS SPENT HALF OF ITS LIFE IN THE SERVICE DEPARTMENT. HERE IS A OF MY PROBLEMS WITHIN THE PAST 28 MONTHS: 1.THE ENGINE OF CAR SHAKES AND MAKES NOISE 2. THE ENGINE LIGHT IS TURNS ON AND AFTER THAT IS SHUT DOWN. AGAIN THE CAR IS AUTOMATIC. IT TURNS OFF 3.THE BRAKE WARNING LIGHT TURNS ON AND OF INTERMITTENTLY- WITH OUT REASON 4.DIAGNOSE HAVE PROBLEM 5.ETS FAILED 6.BRAKE PADS, FRONT, INCLUDE FRONT ROTORS REPLACED 7.STALLED TWICE 8.PASSENGER SIDE WINDOW FAILED 9.CLICKING NOISE UNDER THE VEHICLE 10.GPS NOT WORKING 11.CLICKING NOISE UNDER THE VEHICLE (SECOND TIME) 12.BRAKE PADS, FRONT & REAR, INCLUDE FRONT & REAR ROTORS (SECOND TIME IN LESS THAN 8K MILES) 13.REAR WIPER WASHER CONTAINER LEAKING 14.NAVIGATION SYSTEM LCD SCREEN FLICKERING 15.BAD BATTERY ALL OF THESE ABOVE MAKE US TERRIBLE- THE CAR BRING AT HOME ONLY 27 MONTH BUT HAVE TO STAY IN THE SHOP FOR 18X TIMES WE DID CONTACT A MB MARKET FOR REQUEST ABOUT THE RECALL AND REPLACE FOR US BUT THEY DENIED IT. NOW I HAVE GO TO LOOKING SOMEBODY HELP. *NM
Recall campaigns
0No 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 ↗
Defect investigations
0No exact-year investigations in this snapshot.
An investigation is not a finding of a defect, and closure does not prove a vehicle is problem-free.
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