RoadVitals

2009 Mercedes-Benz ML550 Owner Complaints

Reports submitted to NHTSA by owners and drivers, shown in full

Data refreshed

Complaints on fileComplaints 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.
4
Latest Apr 5, 2024
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.
0
Filed in the last 12 monthsReports filed with NHTSA in the trailing 365 days. Recent volume reflects attention and vehicle age as much as anything else.
0
Reports on file since Dec 17, 2016

What this page shows

Our database holds 4 NHTSA owner-reported complaints for the 2009 Mercedes-Benz ML550. Each one is a report filed by an owner or driver and published by NHTSA without most of them being verified. A complaint is not a confirmed defect, not a recall and not a manufacturer bulletin. Narratives are shown exactly as filed.

Complaints are reports submitted by owners and drivers to NHTSA. They are not verified and do not establish that a defect exists.

Complaints, most recent first

Showing 1–4 of 4

Brakes
Filed Apr 5, 2024

The contact owns a 2009 Mercedes-Benz ML550. The contact stated while driving at various speeds and depressing the brake pedal, the brake pedal went to the floorboard and seized. Additionally, the vehicle failed to respond. There was no warning light illuminated. The contact continuously depressed the brake pedal until the brake pedal raised off the floorboard. The contact received notification of NHTSA Campaign Number: 22V315000 (Service Brakes, Hydraulic) and the vehicle was taken to the dealer, where the recall repair was performed; however, the brake booster was not replaced. The contact stated that the failure had been recurring while driving. The manufacturer was notified of the failure and assisted in towing the vehicle to the dealer. The dealer informed the contact that a fee would be charged for a diagnostic test and repair. The vehicle was not diagnosed or repaired. The failure mileage was unknown.

NHTSA ID
11581410
Incident
Apr 5, 2021
Brakes
Filed Jul 26, 2022

In mid February/early March the brakes failed while the vehicle was moving in a parking lot. After exiting the vehicle with the emergency brake on, I found a pool of brake fluid under the car. After towing it home, I had to make the decision to leave the car sitting as I did not have the financial resources to take it to an authorized mechanic as I had lost my job in January. In May learned of the recall and called the number, only to be told that I have to wait for a letter in the mail and to do nothing until I receive a letter. After roughly 2 months we received that letter, and the only instructions were to set up a service appointment, which I did at their earliest date available, which was 20 days later. As the car sat undriveable for months on end the lines clearly corroded further and further, and the battery was also damaged by sitting uncharted for that period of time. So when they received the car, they would not repair the car until the battery was replaced, which they would not cover even though they are clearly the cause of that as well. Then, four days after receiving the car, they have decided that the brake failure was caused by excessive corrosion (which was not there until the car sat for as many months as it did) and they would not cover the repair nor finish the safety recall, and as I type this, have not confirmed if they are even going to cover the tow back to my home(over an hour away) so that I can perform the brake line repairs myself. I find all of this extremely hard to believe as we purchased the car less than two years before the incident and the steel lines were inspected before we picked it up. I understand corrosion can cause failure like this in extreme situations over long periods of time, but I do not believe that it was not caused by their neglect. I am desperate for help at this moment.

NHTSA ID
11475982
Incident
Feb 15, 2022
Airbags
Filed Apr 4, 2017

TL* TAKATA RECALL. THE CONTACT OWNS A 2009 MERCEDES-BENZ ML550. THE CONTACT RECEIVED NOTIFICATION OF NHTSA CAMPAIGN NUMBER: 16V081000 (AIR BAGS); HOWEVER, THE PARTS TO DO THE REPAIR WAS UNAVAILABLE. THE MANUFACTURER EXCEEDED A REASONABLE AMOUNT OF TIME FOR THE RECALL REPAIR. THE MANUFACTURER WAS NOTIFIED OF THE ISSUE. THE CONTACT HAD NOT EXPERIENCED A FAILURE. PARTS DISTRIBUTION DISCONNECT.

NHTSA ID
10970543
Incident
Feb 5, 2016
Tires & wheels
Filed Dec 17, 2016

TIRES ARE NEW 3500 MILES. NORMAL DRIVING AT 40 MPH LOUD NOISE COMING FROM TIRE AND BLEW OUT. THE STEEL BELT WAS FAULTY. TWO DAYS LATER LOUD NOISE COMING FROM ANOTHER NEW TIRE TIRE OUT OF ROUND DUE TO STEEL BELT FAILURE. NO ROAD HAZARD SO TIRE DEALER SAID EVEN THOUGH THEY ARE NEW IT WILL BE ANOTHER 880.00. THE TIRES CLEARLY ARE FAULTY AND WILL CAUSE AN ACCIDENT. DUNLOP 255/50R19 ALL 4 BOUGHT AND INSTALLED 2 FAILED 2 DAYS APART. VERY DANGEROUS BLOWOUT NO INJURIES. THESE TIRES ARE NOT RIGHT AND SHOULD BE COVERED UNDER A RECALL. I HAVE BEEN IN CAR BUSINESS FOR 45 YEARS AND KNOW WHAT THIS IS. NO RESULTS AND NEED CLOSURE QUICKLY !!

NHTSA ID
10935964
Incident
Dec 16, 2016
Mileage
113,663 mi

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.

Data sources

Data on this page last refreshed .