2003 Mercedes Benz M CLASS problems and owner complaints
Explore the records behind recurring owner reports.
Key facts
10 owner complaints analyzed
3 distinct recall campaigns
24,334 mi median reported failure mileage
Scope: 2003 model year. Data snapshot: . 8 complaints include usable failure mileage.
Most common problems
Electrical System is the most frequently named component, appearing in 4 of 10 complaints (40.0%). A complaint can name multiple components.
| Topic | Matching reports | Share of complaints |
|---|---|---|
| Electrical and battery issues | 2 | 20.0% |
| Steering behavior | 2 | 20.0% |
| Transmission and shifting | 1 | 10.0% |
| Engine operation | 1 | 10.0% |
| Braking behavior | 1 | 10.0% |
| Fuel system concerns | 1 | 10.0% |
Topic matches use published keyword rules. They describe mentions, including negations or comparisons, and do not confirm a diagnosis. Read the matching rules.
Component breakdown
Number of unique complaints naming each component. Top eight shown.
| Category | Count |
|---|---|
| Electrical System | 4 |
| Engine And Engine Cooling | 1 |
| Engine And Engine Cooling:Engine | 1 |
| Exterior Lighting:Headlights | 1 |
| Fuel System, Gasoline | 1 |
| Power Train:Automatic Transmission | 1 |
| Seats | 1 |
| Seats:Front Assembly:Seat Heater/Cooler | 1 |
Electrical System: 4; Engine And Engine Cooling: 1; Engine And Engine Cooling:Engine: 1; Exterior Lighting:Headlights: 1; Fuel System, Gasoline: 1; Power Train:Automatic Transmission: 1; Seats: 1; Seats:Front Assembly:Seat Heater/Cooler: 1
Reported problems by failure mileage
Complaint counts in mileage bands. These are not failure rates per vehicle or mile.
| Category | Count |
|---|---|
| Under 25,000 | 5 |
| 25,000 to 49,999 | 3 |
| 50,000 to 74,999 | 0 |
| 75,000 to 99,999 | 0 |
| 100,000 to 149,999 | 0 |
| 150,000 and above | 0 |
Under 25,000: 5; 25,000 to 49,999: 3; 50,000 to 74,999: 0; 75,000 to 99,999: 0; 100,000 to 149,999: 0; 150,000 and above: 0
Under 25,000 miles has the most reports with usable mileage (5). 2 complaints have missing, zero or invalid mileage.
Complaints over time
Year the complaint was filed, not the vehicle model year or incident year. The snapshot year is partial.
| Category | Count |
|---|---|
| 2003 | 2 |
| 2004 | 3 |
| 2005 | 1 |
| 2006 | 1 |
| 2007 | 1 |
| 2010 | 1 |
| 2011 | 1 |
2003: 2; 2004: 3; 2005: 1; 2006: 1; 2007: 1; 2010: 1; 2011: 1
Pattern summary
Electrical System leads the component reports. Electrical and battery issues appears in 2 complaint narratives. Steering behavior appears in 2 complaint narratives. Transmission and shifting appears in 1 complaint narratives. Use these patterns to inspect individual reports and prepare questions for a mechanic.
Calculated from recorded counts. An AI narrative has not been published for this selection.
Complaint evidence
Examples provide context, not a representative sample or a verified diagnosis.
Owner report 10045088 · 2003-10-30 (October 30, 2003)
I PURCHASED A NEW 2003 ML 350 DURING THE MEMORIAL DAY SALE FROM OUR LOCAL MERCEDES DEALER IN IOWA CITY, IA. THE SUV SHUTS OFF AUTOMATICALLY. INITIALLY, THE DEALER REPLACED THE BATTERY. THE SUV HAS BEEN INTO THE DEALER THREE ADDITIONAL TIMES FOR THE SAME PROBLEM. EACH TIME, THE DAY AFTER I RECEIVED THE ML350 BACK, THE PROBLEM OCCURS AGAIN. TWO INCIDENTS OCCURRED WHERE THE SUV WOULD NOT START IN MY GARAGE (WHICH PRESENTED NO HAZARD). TWO INCIDENTS OCCURRED WHERE I WAS DRIVING THE VEHICLE. THIS IS AN EXTREME SAFETY HAZARD - PARTICULARLY IF…
Owner-reported narrative. 7,000 miles reported. Look up ODI 10045088 at NHTSA ↗
Owner report 10199582 · 2007-08-14 (August 14, 2007)
TL*THE CONTACT OWNS A 2003 MERCEDES-BENZ ML55. WHILE DRIVING 60 MPH HE ENGAGED THE SEAT HEATER. THE FRONT AND REAR SEATS BECAME EXTREMELY HOT. HE WAS UNABLE TO TURN THE HEATER OFF. HE PULLED OVER AND NOTICED SMOKE AND SPARKS. HE POURED WATER OVER THE SEATS AND THE SPARKS STOPPED. THE SEAT HEATER DID NOT GO OFF UNTIL THE KEY WAS REMOVED FROM THE IGNITION. THE VEHICLE WAS TOWED TO THE DEALER. THE DEALER STATED THAT THE COILS MALFUNCTIONED. THE CURRENT AND FAILURE MILEAGES WERE 28,000. THE CONSUMER STATED THE DEALER REPLACED SEAT AND E…
Owner-reported narrative. 28,000 miles reported. Look up ODI 10199582 at NHTSA ↗
Owner report 10152690 · 2006-03-14 (March 14, 2006)
DT*: THE CONTACT STATED WHILE DRIVING AT 30 MPH GOING AROUND A CURVE THE STEERING BECAME DIFFICULT AND THEN LOCKED. THE VEHICLE WAS TOWED TO THE DEALERSHIP FOR INSPECTION AND DETERMINED THERE WAS NHTSA RECALL #03V121000 FOR THE STEERING HYDRAULIC POWER ASSIST HOSE, PIPING AND CONNECTIONS. THE HOSE CLAMP ON THE POWER STEERING HOSE WAS REPLACED. UPDATED 5/2/2006 - THE VEHICLE HAD BEEN RECALLED AND REPLACED IN 2003 FOR THE HOSE CLAMPS. *NM CONTACT WAS TOLD BY MERCEDES THAT THIS FAILURE DID NOT INVOLVE THE CLAMP BUT THE HOSE WORE OUT. ALS…
Owner-reported narrative. 24,368 miles reported. Look up ODI 10152690 at NHTSA ↗
Owner report 10363899 · 2010-11-03 (November 3, 2010)
WHILE DRIVING IN MODERATE TRAFFIC ENGINE STOPPED. DRIVER (NOT ME) WAS VERY SCARED AND SAID AN ACCIDENT ALMOST OCCURRED AS SHE MANEUVERED TO BREAKDOWN LANE WITHOUT POWER AND NO POWER STEERING. SECOND OCCURRENCE OF SUDDEN ENGINE STOPPAGE WHILE DRIVING WITH LOSS OF ENGINE POWER AND POWER STEERING IN THIS VEHICLE. FUEL PUMP HAD BEEN PREVIOUSLY REPLACED. *TR
Owner-reported narrative. 42,000 miles reported. Look up ODI 10363899 at NHTSA ↗
Owner report 10060320 · 2004-03-04 (March 4, 2004)
THE TRANSMISSION OF THE SUV "JAMMED" WHILE DRIVING ON THE FREEWAY, AND MY WIFE WHO WAS DRIVING THE VEHICLE ALMOST GOT INTO A ACCIDENT. THE SUV WAS PREVIOUSLY MAKING SUDDEN JUMPS WHILE AUTOMATICALLY SHIFTING THE GEARS. THE PROBLEM WAS REPORTED TO THE DEALER, BUT DEALER DID NOT DIAGNOSE THE TRANSMISSION PROBLEM CORRECTLY. NOW THE VEHICLE IS WITH THE DEALER AND THE SERVICE MANAGER TELLS ME THAT THERE WAS METAL DEBRIS IN THE TRASMISSION WHICH, ACCORDING TO THE SERVICE MANAGER, COULD BE DUE TO FAILURE OF THE CLUTCH.
Owner-reported narrative. 20,000 miles reported. Look up ODI 10060320 at NHTSA ↗
Owner report 10039003 · 2003-09-16 (September 16, 2003)
I WAS PULLING INTO A PARKING SPACE (WITH MY 3 SMALL CHILDREN STRAPPED IN THE BACK), WHEN I REALIZED THAT THE CAR WAS NOT STOPPING. I PRESSED THE BRAKE HARDER, THE CAR ACCELERATED, JUMPED THE CEMENT MEDIAN, AND HIT A PARKED CAR. THANK GOD NO ONE WAS INJURED. I AM SICK THINKING WHAT COULD OF HAPPENED. THE CAR IS 6 MONTHS OLD AND HAS BEEN BACK TO THE DEALERSHIP TWICE FOR A PROBLEM I BELIEVE WAS THE BEGINNING OF THIS, I.E., WHEN I WOULD STEP ON THE BRAKE IT WOULD GO TO STALL, BUCK FORWARD AND THEN BE OK. THE DEALERSHIP WAS UNABLE TO FIND IT OR D…
Owner-reported narrative. 10,744 miles reported. Look up ODI 10039003 at NHTSA ↗