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Seat beltsPart report

2003 Mercedes-Benz S Class Seat belts Problems

Complaints
4about this part
Share
14%of 28 total for the year
Median mileage
52,500miles
Trend
Not enough dataFewer than 15 complaints, too few for a reliable trend.

NHTSA recorded 4 complaints about the seat belts of the 2003 Mercedes-Benz S Class, 14% of the 28 complaints for this model year. Where a mileage was given, the median is 52,500 miles.

Fewer than 15 complaints name this part, so treat the figures as a rough indication only.

Example complaints

Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.

“The driver's side seat belt does not work properly during hot weather. More particularly, the belt will not extend. It is impossible to pull the belt out enough to fasten it. Thus, the only way the car can be driven in hot weather is without the driver wearing a seat belt. The belt works properly in the morning when leaving our air-conditioned garage, but when returning to the car while it has been parked outside in hot weather the seat belt does not work.”

NHTSA complaint #10464097, filed 2012-07, 120,000 miles

“The passenger side seat belt does not work properly. During hot weather, the belt will not extend. Passenger is unable to pull the belt out enough to fasten it in the latch. The catch mechanism which normally latches during a crash or rapid stopping seems to be stuck catching all the time.”

NHTSA complaint #10215138, filed 2008-01, 55,000 miles

“The contact owns a 2003 mercedes benz s55. The contact stated that the seat belt would not retract properly whenever there were warmer temperatures. The vehicle was inspected by a dealer and the dealer was unable to determine the failure. In addition, the contact stated that the trunk lid would either become resistant when attempting to close the hatch, or it would close independently. On one occasion, the trunk lid closed unexpectedly on the contact as she attempted to remove items from the trunk area. As a result, the contact sustained a contusion to the right leg. …”

NHTSA complaint #10509561, filed 2013-04, 50,000 miles

Seat belts: other model years

YearComplaintsShare of year
200417%
2003414%
1999222%
199514%

Other parts of the 2003 Mercedes-Benz S Class

Suspension
7 complaints
Electrical system
6 complaints
Air bags
4 complaints
Latches, locks and linkages
3 complaints
Engine cooling
2 complaints
Equipment
2 complaints
Interior lighting
2 complaints
Body and structure
2 complaints
Transmission and drivetrain
2 complaints
Brakes
1 complaints
Fuel system
1 complaints
Steering
1 complaints

← All problems reported for the 2003 Mercedes-Benz S Class

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