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:
Numerous stowage facilities, high degree of variability and
temperature-controlled cup holder
Numerous, easily accessible stowage facilities in the M-Class can accommodate
bottles, mugs, keys, coins and much more. Each of the four doors can also easily
accommodate a large 1-litre bottle.
...
Overview of sun visors
WARNING
Do not use the vanity mirror while driving.
Keep the vanity mirrors in the sun visors
closed while the vehicle is in motion.
Reflected glare can endanger you and others.
1 Mirror lig ...
Cleaning the wheels
WARNING
Do not use power washers with circular-jet
nozzles (dirt grinders) to clean your vehicle, in
particular the tires. You could otherwise
damage the tires and cause an accident. ...