RoadVitals

2003 Mercedes-Benz M Class Problems

Owner-reported complaints filed with NHTSA, grouped by component

Data refreshed

Owner complaintsComplaints are reports submitted to NHTSA by owners and drivers. NHTSA does not verify most reports before publishing them, and a complaint does not establish that a defect exists. Volume is influenced by how many of a vehicle were sold, how long it has been on the road, and how much attention an issue has received.
10
Latest Oct 17, 2011
Components namedHow many of our component categories appear on at least one report for this model year. One report can name several.
8
Crash or fire reportedComplaints whose submitter recorded that a crash or a fire occurred. These are the reporter's own answers on the NHTSA form, not verified findings.
2

What this page shows

Everything below is an owner-reported complaint submitted to NHTSA about the 2003 Mercedes-Benz M Class, 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

  • Electrical433.3%
  • Engine216.7%
  • Interior & seats18.3%
  • Exterior lighting18.3%
  • Steering18.3%
  • Heating & air conditioning18.3%
  • Transmission18.3%
  • Fuel system18.3%

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

Electrical

Reports naming the electrical system — wiring, battery, charging, control modules, infotainment and electrical accessories.

4
reports

From owner reports, verbatim

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 ELECTRICAL COMPONENTS BUT WILL NOT PROVIDE CONSUMER WITH ANY DOCUMENTATION OR INFORMATION PERTAINING TO THE DEFECT AND REPAIR. UPDATED 09/18/07 *TR

NHTSA ID 10199582 · filed Aug 14, 2007

- NO PRECURSORS OR APPARENT DAMAGE - DRIVERS SEAT HEATER FAILED RESULTING IN STRONG BURNING SMELL, AND SUPERFICIAL BURN TO LEFT UPPER LEG OF DRIVER

NHTSA ID 10120832 · filed May 13, 2005

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.

2
reports

From owner reports, verbatim

AFTER CHANGING THE SERPENTINE BELT, I HAVE NOTICED THAT THE CRANKSHAFT PULLEY WAS WOBBLING AND THE BELT VIBRATING, I BEEN DOING SOME RESEARCH AND FOUND THAT THERE HAS BEEN A RECALLED FOR THIS ISSUE, DOSE MINE STILL APPLIED TO THIS PROBLEM? IT IS ALREADY OUT OF WARRANTY BUT THIS KIND OF REPAIR IS EXPENSIVE, PLEASE. *TR

NHTSA ID 10430515 · filed Oct 17, 2011

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 DUPLICATE IT. I HAVE SEEN WHERE OTHER PEOPLE ARE HAVING THIS SAME PROBLEM. ALSO FOR 2003 THE MODEL IS ML 350 - MERCEDES. AGAIN THEY HAVE NOT FOUND A PROBLEM. THEY SENT THE MANUFACTURER OUT TO CHECK THE CAR AND NOTHING. I HAVE A POLICE REPORT THAT STATES THE RESPONDING POLICE OFFICER AND TOW TRUCK DRIVER CONCUR THAT THE BRAKES WERE DOWN TO THE FLOOR BOARD AND NOT ENGAGING.*JB

NHTSA ID 10039003 · filed Sep 16, 2003

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.

1
report

From owner reports, verbatim

- NO PRECURSORS OR APPARENT DAMAGE - DRIVERS SEAT HEATER FAILED RESULTING IN STRONG BURNING SMELL, AND SUPERFICIAL BURN TO LEFT UPPER LEG OF DRIVER

NHTSA ID 10120832 · filed May 13, 2005

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.

1
report

From owner reports, verbatim

HELLO, I HAVE RECENTLY PURCHASED A BRAND NEW MERCEDES ML500 TRUCK FROM MILLENNIUM IN BRIDGEWATER, NJ 908-685-0800. THE PROBLEM I HAVE IS THAT ONE OF THE HEADLIGHTS IS DEFECTIVE AND HAS CONDENSATION BUILD IN IT ALL THE TIMES. WHILE THE DEALER SYMPTHISES WITH ME, THE DEALER REFUSES TO REPLACE IT BECAUSE MERCEDES WOULD NOT PAY FOR IT. MERCEDES SAYS IT IS NOT A PROBLEM. HOW CAN IT NOT BE A PROBLEM WHEN AT NIGHT IS PRESENTS A SAFTY PROBLEM AS IT IS LIKE DRIVING WITH ONE HEAD LIGHT ON, AND THE GLASS ON HEADLIGHT IS COVERED WITH CONDENSATION. SECONDLY, I HAVE YET TO SEE ANOTHER CAR WITH CONDENSATION BUILD IN THE HEADLIGHTS. IT IS A BRAND NEW SUV. *AK

NHTSA ID 10055079 · filed Jan 28, 2004

Too few reports in this category for a page of its own — they appear in the full complaint list.

Steering

Reports naming the steering system — racks, columns, power-steering assist and steering linkage.

1
report

From owner reports, verbatim

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. ALSO, WAS TOLD THAT THE STEERING FAILURE HAD NOTHING TO DO WITH THE MECHANIC WHO HAD SERVICED THE VEHICLE 2 DAYS PRIOR. IT WAS JUST SOMETHING THAT HAPPENED, AND THAT THERE ARE NO PROBLEMS WITH THE CURRENT CLAMP/ HOSE IN THE STEERING COLUMN. WHEN THE CONTACT PICKUP THE VEHICLE FROM DEALER NOTICED A CHARGE FOR REPLACING THE STEERING HOSE CLAMP AND LOWER HOSE. THE CONTACT WAS TOLD IT WAS ONLY A BILLING CODE FOR THE WORK DONE BY THE MECHANIC. THE NEW CLAMP WAS ALSO DEFECTIVE. SIMPSON MERCEDES REIMBURSED THE CONTACT WITH $1,950.00 BECAUSE IT WAS FELT THIS SHOULD NOT HAV EHAPPENED. CONTACT UNEASY ABOUT THE STEERING IN THE VEHICLE. *AK

NHTSA ID 10152690 · filed Mar 14, 2006

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.

1
report

From owner reports, verbatim

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 ELECTRICAL COMPONENTS BUT WILL NOT PROVIDE CONSUMER WITH ANY DOCUMENTATION OR INFORMATION PERTAINING TO THE DEFECT AND REPAIR. UPDATED 09/18/07 *TR

NHTSA ID 10199582 · filed Aug 14, 2007

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.

1
report

From owner reports, verbatim

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.

NHTSA ID 10060320 · filed Mar 4, 2004

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.

1
report

From owner reports, verbatim

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

NHTSA ID 10363899 · filed Nov 3, 2010

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

Data on this page last refreshed .