There are 5 stored owner reports matching the brakes leading-label group for the 2003 Mercedes-Benz ML-Class in our NHTSA-sourced dataset. These are unverified consumer reports and may not reflect confirmed defects.
This group counts stored reports whose component label starts with one of this site's matching prefixes, ignoring case. Each matching report counts once within the group. Components mentioned later in the label or only in the narrative are not searched. How component counts work
Loaded 5 of 5 matching reports.
Open the full vehicle complaint log (all categories)TL* THE CONTACT OWNS A 2003 MERCEDES-BENZ ML500. THE CONTACT STATED THAT THE ABS INDICATOR KEPT RANDOMLY ILLUMINATING AND THE BRAKE PEDAL TRAVELED TO THE FLOORBOARD WHEN IT WAS DEPRESSED. THE VEHICLE WAS TAKEN TO AN INDEPENDENT MECHANIC, BUT WAS NOT DIAGNOSED OR REPAIRED. THE VEHICLE REMAINED PARKED FOR OVER A YEAR DUE TO THE RISK OF A POTENTIAL CRASH. THE DEALER AND MANUFACTURER WERE NOT CONTACTED. THE FAILURE MILEAGE WAS NOT AVAILABLE.
RUBBER SEAL BETWEEN BRAKE PISTON AND BOOSTER CAN COME OFF OR DISINTEGRATE, CAUSING LOSS OF VACUUM ASSIST AND A SUDDEN DECREASE IN BRAKE FORCE WHICH CAN RESULT IN A CRASH.
TL* THE CONTACT OWNS A 2003 MERCEDES BENZ ML320. WHILE DRIVING APPROXIMATELY 40 MPH, THE BRAKES WERE ENGAGED NUMEROUS TIMES BEFORE THERE WAS A REDUCTION IN THE SPEED. THE CONTACT SMELLED AN UNUSUAL ODOR INSIDE OF THE VEHICLE. IN ADDITION, ON SEPARATE OCCASIONS A BURNING ODOR OF BRAKES EMITTED THROUGHOUT THE VEHICLE WHILE DRIVING. THE VEHICLE WAS TAKEN TO AN AUTHORIZED DEALER WHO WAS UNABLE TO DETECT A PROBLEM. THE MANUFACTURER WAS NOTIFIED OF THE PROBLEM. THE APPROXIMATE FAILURE MILEAGE WAS 30,000.
2003 MERCEDES BENZ ML500 ABS LIGHT ILLUMINATED ON THE DASHBOARD AND THE VEHICLE WAS TAKEN TO THE DEALER. THE DEALER NOTIFIED THE CONSUMER THAT THE BRAKES AND TIRES NEEDED TO BE CHANGED.*MR *NM
WHILE PARKING VEHICLE ACCELERATED. CONSUMER APPLIED THE BRAKE PEDAL BUT THE BRAKES FAILED. THIS CAUSED CONSUMER'S VEHICLE TO COLLIDE WITH THE VEHICLE IN FRONT. THE VEHICLE WAS TAKEN TO THE DEALER FOR INSPECTION. THE CAUSE HAD NOT BEEN DETERMINED. *AK
Complaints are unverified consumer reports submitted to NHTSA. A high complaint count may reflect vehicle popularity, not defect severity. Data sourced from NHTSA public records.
NHTSA source checks for this vehicle year
Checks are recorded separately for each dataset, not for the whole page. Dates use UTC. A missing check date does not mean no records exist.
Vehicle import recorded: Aug 31, 2026. This is the stored import date, not confirmation that every source was successfully refreshed.