Using the rear center seat belt
If the left-hand rear seat backrest is folded down and back up again, the rear center seat belt may lock. The seat belt can then not be pulled out.
To release the rear center seat belt:pull out the seat belt by the belt outlet on the backrest approximately 1 in (25 mm) and release it again.
The seat belt is retracted and released.
See also:
Removing the ball coupling
Observe the manufacturer's installation instructions.
Press the protective cap into the ball coupling recess.
Make sure that the protective cap is firmly in place.
...
Please bear the following in mind
Resetting the service interval display
A qualified specialist workshop, e.g. an
authorized Mercedes-Benz Center, will reset
the service interval display after the
necessary service work has bee ...
Adjusting the exterior mirrors
WARNING
Exercise care when using the passenger-side exterior rear view mirror. The mirror
surface is convex (outwardly curved surface for a wider field of view). Objects
in mirror are closer ...