Automatic headlamp mode
To switch on automatic headlamp
mode: turn the light switch to 
.
SmartKey in position 1 in the ignition lock:
the parking lamps are switched on or off automatically depending on the brightness of the ambient light.
With the engine running: depending on the brightness of the ambient light, the daytime running lamps or the parking lamps and low-beam headlamps are switched on or off automatically.
When the low-beam headlamps are
switched on, the 
indicator lamp on
the light switch lights up.
WARNING
If the light switch is set to ,
the low-beam
headlamps will not come on automatically if
it is foggy. This could endanger you and
others. Therefore, turn the light switch to
in fog.
The automatic headlamp feature is only an
aid. The driver is responsible for the vehicle's
lighting at all times.
WARNING
When it is dark or foggy, turn the light switch
quickly from to
. Otherwise, the
headlamps could switch off temporarily and
you could cause an accident.
See also:
Cleaning the headliner and carpets
Roof lining: use soft brushes or dry shampoo if it is particularly dirty.
Carpets: use carpet and textile cleaners that have been approved and recommended
by Mercedes-Benz.
...
Adjusting the active multicontour
seat
The active multicontour seat on the driver's
side automatically adapts the sides of the
backrest to your current driving style. You can
adjust the contour of the seats individually so
as to pr ...
Tread wear
The tread wear grade is a comparative rating
based on the wear rate of the tire when tested
under controlled conditions on a specified
U.S. government course. For example, a tire
graded 150 would ...