Brake complaints by model year
Which parts fail
Components named in complaints (service brakes, ABS, rotors and pads, parking brake).
Mileage when the problem started
What owners report
The contact owns a 2007 Mercedes-Benz ML320. The contact was made aware of NHTSA Campaign Number: 22V315000 (Service Brake, Hydraulic) however, the part to do the recall repair was not yet available. The local dealers Mercedes-Benz of Seattle (2025 Airport Way S, Seattle, WA 98134:[phone]) and Mercedes-Benz of Lynnwood (17800 Hwy 99, Lynnwood, WA 98037:[phone]) were contacted. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was made aware of the issue. The contact had not experienced a failure. Parts distribution disconnect.
The contact owns a 2007 Mercedes-Benz ML320. The contact received notification of NHTSA Campaign Number: 22V315000 (Service Brakes, Hydraulics) however, the part to do the recall repair was not yet available. The dealer was made aware of the issue. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The contact had not experienced a failure. Parts distribution disconnect.
My wife drove the vehicle to work one day and when she was pulling out of the parking lot onto a busy street, the yellow triangle with exclamation point started to flash and engaged the brakes. My wife quickly pull over to the side of the street and made her way back into the parking lot while the brakes where engaging. My wife was unable to drive the vehicle home from work. We let the vehicle sit for several minutes and I was able to get the vehicle moving but the brakes were engaging again. I was able to get the vehicle back home. I have taking the vehicle to several shops and all the shops are saying that there is an issue with the traction control system. When driving the vehicle from one of the shops, as soon as I pulled out of the shop's parking lot the brakes engaged and the yellow triangle with exclamation was flashing. …
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.
The contact owns a 2002 Mercedes-Benz ML320. The contact stated while driving at approximately 25 MPH, the driver's side front wheel independently braked. The contact stated he had not depressed the brake pedal but heard an abnormal sound from the tire screeching as the wheel had stopped rolling. The contact stated that the ESP traction warning light was illuminated. The contact pulled the vehicle over, turned off, restarted the vehicle, and was able to continue driving. The contact stated that the failure occurred several minutes later. The contact stated that the failure occurred one other time and had not happened again. The contact had not taken the vehicle to a local dealer or independent. The vehicle had not been diagnosed and was not repaired. The manufacturer was not informed of the failure. The failure mileage was approximately 198,000.
The car brakes suddenly by itself just after the ESB/ABS lights come on along with an exclamation point (!). This has happened randomly at least 4 times since we purchased the car. Once at high speeds on the highway. It appears this problem is common with other owners of Mercedes 2001-2002 ML's. According to the forums below, the problem seems to be a "YAW RATE SENSOR" malfunction or defect. My Mercedes mechanic saw no error codes for this component and it seem extremely expensive (forum states part is $3000) to replace. The https://mbworld.org/forums/m-class-w163/233486-big-problems-ml320-pls-help-2.html
Same story as I've seen thousands of times on the internet and you claim not enough occurrences! I'm on the interstate, going 70 MPH. Weather is good, traffic is light (thank god!) and my breaks slam on. The ABS system kicks in, so I'm able to get over to the shoulder before being rear ended. The triangle warning lamp is lit and the bas / ESP lamp is lit. I try turning the car off and back on, lights go out, I move forward, get up to about 20 MPH and the breaks slam on again. I shut the car off for about 15 minutes while I got out and was investigating the tires and breaks. Get back in, start the vehicle and drive another 45 minutes. Get into town, driving about 25 MPH and they slam on again. I'm able to limp home with the ABS going on and off. I park it for the night. Next day I do some research and see there are thousands of similar complaints. …
On more than one occasion, my 2001 merc Benz ML320 came to a complete stop and dramatically pulled to the right while I was driving at various speeds. The first time happened as I was making a right turn from a stand still. The second time happened as I was traveling at approximately 35-40 MPH. Finally, the last two times occurred while I was on the highway traveling at approximately 65-70 MPH. In all instances, the front brakes absolutely locked and my vehicle came to an approximately complete stop while pulling the steering to the right. Each event was a very frightening episode. Although I kept trying to accelerate, the brakes would not allow it. I had just enough momentum so that I could veer to the safety of the safety lane. The events all happened within a two (2) week period...far, far too frequent for comfort. …
Related recalls (2)
Service brakes, hydraulic › Power assist › Vacuum
Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2006-2012 ML, GL, and R-Class vehicles. Please refer to MBUSA's recall report for specific vehicle model details. Moisture may accumulate and cause corrosion in the brake booster housing unit, which can result in reduced brake performance or brake failure.
Remedy: Owners are advised not to drive their vehicles until the remedy has been performed. Dealers will remove the rubber sleeve, inspect the brake booster, and as necessary, replace the brake booster.
Service brakes, hydraulic › Power assist › Vacuum
Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2006-2012 ML-Class, GL-Class, and R-Class vehicles. Please refer to MBUSA's recall report for specific vehicle model details. Moisture may accumulate and cause corrosion in the brake booster housing unit, which can result in reduced brake performance or brake failure.
Remedy: Owners are advised not to drive their vehicles until the remedy has been performed. Dealers will remove the rubber sleeve, inspect the brake booster, and as necessary, replace the brake booster.
Frequently asked questions
Which Mercedes-Benz ML320 years have brake problems?
By NHTSA complaints, the 2001 (48), 2000 (34), 2002 (25), 1998 (16) and 1999 (11) model years. Brake complaints make up 35% of all complaints for the 2001.
Is there a recall for Mercedes-Benz ML320 brake problems?
Yes — 2 recalls, including 24V-298 (vacuum, Apr 26, 2024); 22V-315 (vacuum, May 9, 2022). Recall repairs are free at authorized dealers; check a specific car with the VIN recall check.
At what mileage do Mercedes-Benz ML320 brake problems start?
Across all years, half of the complaints with a recorded mileage happened before about 119,000 miles; 20% happened before 50,000 miles.
What part fails most often?
Owners most often name the antilock/traction control/electronic limited slip (15 mentions), followed by the foundation components (6).
Source: U.S. National Highway Traffic Safety Administration (NHTSA) — owner complaints through October 20, 2026, recalls and defect investigations; fuel economy from the EPA. Complaints are unverified reports and are not proof of a defect. How we rate model years.