Automatic anti-glare mirrors
WARNING 
If incident light from headlamps is prevented
from striking the sensor in the rear-view
mirror, for instance, by luggage piled too high
in the vehicle, the mirror's automatic antiglare
function will not operate.
Incident light could then blind you. This may
distract you from the traffic conditions and,
as a result, you may cause an accident.
The rear-view mirror and the exterior mirror on the driver's side automatically go into antiglare mode if the ignition is switched on and incident light from headlamps strikes the sensor in the rear-view mirror.
The mirrors do not go into anti-glare mode if reverse gear is engaged or the interior lighting is switched on.
See also:
Cleaning genuine wood and trim elements
Wipe the wooden trim and trim pieces with a damp, lint-free cloth, e.g.
a microfiber cloth.
Heavy soiling: use car care and cleaning products recommended and approved
by Mercedes-Benz.
...
Adjusting the rear seat head restraint angle
Adjust the head restraints so that they are as close as possible to your head.
You can only adjust the two outer head restraints.
X Pull or push the top of the head restraint until it is in the de ...
General notes
WARNING
If the vehicle becomes trapped in snow,
ensure that snow is kept away from the
exhaust pipe and from around the vehicle as
long as the engine is running. Otherwise,
poisonous carbon ...