Mercedes-Benz 2010 M-Class Operator's Manual page 168

Overview of climate control system functions and air vents
166
Rear automatic climate
control ( Y page 177)
The rear automatic climate control allows
separate climate settings for the rear
compartment.
Air vents
G
Warning!
When operating the climate control, the air
that enters the passenger compartment
through the air vents can be very hot or very
cold (depending on the set temperature). This
may cause burns or frostbite to unprotected
skin in the immediate area of the air vents.
Always keep sufficient distance between
unprotected parts of the body and the air
vents. If necessary, use the air distribution
adjustment to direct the air to air vents in the
vehicle interior that are not in the immediate
area of unprotected skin.
For best possible performance of the climate
control:
X
Keep the air intake grille in front of the
windshield free of snow, leaves, sticks, and
any other debris.
X
Always keep all air vents and grilles in the
passenger compartment free from
obstruction.
i For draft-free ventilation, move the
adjustable center and side air vents to the
middle position.
Center air vents
Left center air vent, adjustable
:
Right center air vent, adjustable
;
Thumbwheel for air volume control for
=
adjustable right center air vent
Thumbwheel for air volume control for
?
adjustable left center air vent
X
Opening/closing: Turn thumbwheels =
and ? in the required direction.
Side air vents
Example illustration driver's side
Left side defroster air vent, fixed
:
Left side air vent, adjustable
;
Thumbwheel for air volume control for
=
adjustable left side air vent
X
Opening/closing: Turn thumbwheel = in
the required direction.