2004 Mercedes-Benz ML-Class Electrical System Problems

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.

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.

THE BOSE DVD STEREO HAS NO SOUND EVERYTHING WORKS JUST NO SOUND THIS APPEAR TO BE A COMMON PROBLEM. *TR

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

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

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

2004 MERCEDES BENZ ML500 DRIVER SEAT CAUGHT FIRE WHILE DRIVING. CONSUMER STATES THAT DUE TO THE SEAT CATCHING FIRE HE SUFFERED MILD BURNS ON THE LEFT HIP. *KB THE HEATING PAD IN THE DRIVERS SEAT SHORTED OUT AND CAUSED THE LEATHER AND SEAT CUSHION TO BURN. *JB

VEHICLE LOST POWER DUE TO THE ESM TRACKING SYSTEM. AFTER ABOUT 15-20 MINUTES THE VEHICLE COULD BE RESTARTED. *AK *NM