IllustrationLEAKAGE OF POWER STEERING FLUID COMING FROM HOSES, OR PIPE, OR SOME CONNECTION. I WAS ABOUT TO LEAVE WHEN I STARTED MY CAR ONLY TO HEAR A LOUD WHINING NOISE AND A HARD-TO-TURN STEERING WHEEL.
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.
About this comparison →How this year compares
Owner complaints by model year
Compare all ML350 years →Counts vary with age, sales 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
30–25K
225–50K
1050–75K
475–100K
6100–150K
3150K+
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.
3 crash reports3 fire reports3 injury reports
Steering complaints
6 reportsTL* THE CONTACT OWNS A 2004 MERCEDES-BENZ ML350. WHILE DRIVING VARIOUS SPEEDS, THE POWER STEERING MALFUNCTIONED. THE STEERING WHEEL WAS DIFFICULT TO TURN AND THE STEERING FLUID HAD TO BE REPLACED SEVERAL TIMES. THE CONTACT STATED THAT THE STEERING WHEEL MADE A LOUD GRINDING NOISE WHEN IT WAS TURNED AND POWER STEERING FLUID LEAKE…
Read full complaint
TL* THE CONTACT OWNS A 2004 MERCEDES-BENZ ML350. WHILE DRIVING VARIOUS SPEEDS, THE POWER STEERING MALFUNCTIONED. THE STEERING WHEEL WAS DIFFICULT TO TURN AND THE STEERING FLUID HAD TO BE REPLACED SEVERAL TIMES. THE CONTACT STATED THAT THE STEERING WHEEL MADE A LOUD GRINDING NOISE WHEN IT WAS TURNED AND POWER STEERING FLUID LEAKED FROM THE COLUMN. IN ADDITION, THE CHECK ENGINE INDICATOR ILLUMINATED WITHOUT WARNING. IT WAS DIAGNOSED THAT THE POWER STEERING HOSE NEEDED TO BE REPLACED. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS NOT MADE AWARE OF THE FAILURE. THE FAILURE MILEAGE WAS 90,000.
TL* THE CONTACT OWNS A 2004 MERCEDES BENZ ML350. WHILE DRIVING AT AN UNKNOWN SPEED, THE CONTACT HEARD A NOISE COMING FROM THE FRONT OF THE VEHICLE. THE VEHICLE WAS TAKEN TO A DEALER. THE TECHNICIAN DIAGNOSED THAT THE HOSE CLAMP NEEDED TO BE REPLACED. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS NOT NOTIFIED OF THE FAILURE.…
Read full complaint
TL* THE CONTACT OWNS A 2004 MERCEDES BENZ ML350. WHILE DRIVING AT AN UNKNOWN SPEED, THE CONTACT HEARD A NOISE COMING FROM THE FRONT OF THE VEHICLE. THE VEHICLE WAS TAKEN TO A DEALER. THE TECHNICIAN DIAGNOSED THAT THE HOSE CLAMP NEEDED TO BE REPLACED. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS NOT NOTIFIED OF THE FAILURE. THE CONTACT WAS AWARE OF NHTSA CAMPAIGN NUMBER: 08V465000 (STEERING), BUT THE VIN WAS NOT INCLUDED. THE FAILURE MILEAGE WAS 100,000. UPDATED 06/13/17*LJ THE CONSUMER REQUESTED TO BE REIMBURSED FOR THE LEAKY STEERING FLUID REPAIRS. THE VEHICLE WAS REPAIRED USING THE SAME REQUIREMENTS AS THE RECALL, BUT WAS NOT REPAIRED UNDER THE RECALL. *JS
TL* THE CONTACT OWNS A 2004 MERCEDES ML350. WHILE PARKED, THE CONTACT NOTICED POWER STEERING FLUID WAS LEAKING FROM THE VEHICLE. THE CONTACT ALSO STATED THAT WHILE DRIVING APPROXIMATELY 30 MPH, THE STEERING WHEEL BECAME DIFFICULT TO MANEUVER. THE FAILURE OCCURRED AT DIFFERENT SPEEDS. THE VEHICLE WAS TAKEN TO THE DEALER. THE TECH…
Read full complaint
TL* THE CONTACT OWNS A 2004 MERCEDES ML350. WHILE PARKED, THE CONTACT NOTICED POWER STEERING FLUID WAS LEAKING FROM THE VEHICLE. THE CONTACT ALSO STATED THAT WHILE DRIVING APPROXIMATELY 30 MPH, THE STEERING WHEEL BECAME DIFFICULT TO MANEUVER. THE FAILURE OCCURRED AT DIFFERENT SPEEDS. THE VEHICLE WAS TAKEN TO THE DEALER. THE TECHNICIAN STATED THAT A DIAGNOSTIC TEST WAS NECESSARY TO LOCATE THE CAUSE OF THE FAILURE. THE CONTACT DID NOT HAVE THE FAILURE DIAGNOSED. THE VEHICLE WAS NOT REPAIRED. THE VIN WAS NOT AVAILABLE. THE APPROXIMATE FAILURE MILEAGE WAS 90,000.
POWER STEERING FLUID LEAK, RESULTING IN OCCASIONAL HARD STEERING. THIS ALSO OCCURRED IN JANUARY AND APRIL. WE CALLED THE DEALER AND MERCEDES USA AND WERE TOLD THE VEHICLE WAS NOT PART OF THE SEPTEMBER 2008 RECALL. *TR
A COMPLETE LOSS OF POWER STEERING FLUID CAUSED ME TO LOSE CONTROL OF MY SUV. I WAS UNAWARE OF ANY LOST OF POWER STEERING FLUID UNTIL I LOST CONTROL OF MY VEHICLE AND I LATER CHECK THE AREA WHERE I HAD PARKED THE NIGHT BEFORE. I PARKED MY VEHICLE UNTIL I REPLACED THE POWER STEERING FLUID. THIS IS NOT THE FIRST PROBLEM I HAVE HAD …
Read full complaint
A COMPLETE LOSS OF POWER STEERING FLUID CAUSED ME TO LOSE CONTROL OF MY SUV. I WAS UNAWARE OF ANY LOST OF POWER STEERING FLUID UNTIL I LOST CONTROL OF MY VEHICLE AND I LATER CHECK THE AREA WHERE I HAD PARKED THE NIGHT BEFORE. I PARKED MY VEHICLE UNTIL I REPLACED THE POWER STEERING FLUID. THIS IS NOT THE FIRST PROBLEM I HAVE HAD WITH THIS TYPE OF VEHICLE. I RECEIVED A SAFETY RECALL NOTICE ON THE OTHER ML320, 2001 THAT I GOT RID OF THREE YEARS AGO. *TR
Official recalls
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 ↗
NHTSA investigations
0No exact-year investigations in this snapshot.