2009 Mercedes-Benz ML350 Seat belts Problems
- Complaints
- 18about this part
- Share
- 19%of 93 total for the year
- Median mileage
- 65,000miles
- Trend
- FallingComplaints filed in the last 3 full calendar years are at least 25% lower than in the 3 years before.
NHTSA recorded 18 complaints about the seat belts of the 2009 Mercedes-Benz ML350, 19% of the 93 complaints for this model year. Where a mileage was given, the median is 65,000 miles.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“Rear seatbelt will not retract. Mileage is past warranty coverage & fix is very pricey (approx $800). This is a major safety issue especially with passengers, mostly children, in the back. I googled this & it seems I am not the only one who has this issue. It is wide spread & a fault of the manufacturer. Mercedes should be required to fix this free of charge! Please help.”
NHTSA complaint #10644186, filed 2014-10, 60,000 miles“I had a passenger in the rear of my vehicle and she told me the seat belts did not work. The rear passenger belt would not retract. When I stopped the vehicle we checked both sides and neither rear belts are working. They are all out of the containment system and locked. They will not retract and therefore cannot be used. I contacted mb USA to find out if there is a recall for the seat belts after I went online and found out that this is a very common problem with their vehicles. They told me there is no recall and they referred me back to the dealership. …”
NHTSA complaint #10680613, filed 2015-02, 68,822 miles“The rear seat belts do not retract once pulled out. Over the course of several days, they slowly work their way back up. No vehicle should have a seatbelt fail; it is even more ridiculous that this part failed in a car that is this expensive or that has had such a long history of safety. It isn't safe for anyone to sit in the back seats because the seat belts are out-stretched so far that a person would be thrown forward a ways before the seatbelts stopped them. That is dangerous.”
NHTSA complaint #11404801, filed 2021-03, 115,000 miles“2 issues: right side rear seat belt will not retract. Second; after a week in the dealership to fix an A/C unit that cuts out repeatedly, and the assurances that the new harness they installed would fix the problem, it hasn't. Even though the outside temps are not into triple digits, it will stop cooling and slowly the air temp rises. I thought that being in slow traffic was the reason, but on the open road and an oat of 74, it did it agsin.”
NHTSA complaint #10873875, filed 2016-06, 80,000 miles“The rear seat belts do not fit snugly and they will not retract after usage. This is a serious safety issue as they are inoperable. Back seat passengers are at risk during driving.”
NHTSA complaint #10818053, filed 2016-01, 65,000 milesRelated service bulletins
- 10044222Apr 20, 2012Mercedes benz: front or rear seat belt does not roll up correctly. Dirt deposits on the seat belt guide due to soiled seat belt. Also included models 169, f cell, 246, and 231…
- 10042607Apr 5, 2012Xentry(mercedes): bulletin provided regarding control unit detecting an undervoltage after buckling up (belt slack elimination) during seat belt adjustment sequence. *pe updated…
Seat belts: other model years
Other parts of the 2009 Mercedes-Benz ML350
40 complaintsElectrical system
17 complaintsBrakes
6 complaintsExterior lighting
5 complaintsFuel system
5 complaintsBody and structure
5 complaintsOther or unknown
2 complaintsSeats
1 complaintsSteering
1 complaintsSuspension
1 complaintsTransmission and drivetrain
1 complaintsVehicle speed control
1 complaints
← All problems reported for the 2009 Mercedes-Benz ML350
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 31, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.
To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology