Mercedes-Benz 2010 M-Class Operator's Manual page 179

Function
O Interior temperature sensor
P Adopting driver's side settings
for all zones
Rear automatic climate control
Increasing air volume
:
Temperature control
;
Air distribution and air volume (automatic
=
mode)
Air distribution (directs air through the
?
side air vents)
Air distribution (directs air through the
A
footwells and side air vents)
Rear automatic climate control on/off
B
Decreasing air volume
C
Notes on 3-zone automatic climate
control
With the help of a sun sensor, the automatic
climate control determines the relation of the
sun to the vehicle and automatically adjusts
the inside temperature for every individual
zone.
The automatic climate control is operational
whenever the engine is running. It cools the
vehicle's interior according to the angle and
intensity of the sun's rays, the outside
temperature and the selected temperature.
You can operate the automatic climate
control in either the automatic or manual
mode.
3-zone automatic climate control
Recommendation/Notes
Nearly all dust particles, pollutants and odors
are filtered out before outside air enters the
passenger compartment through the air
distribution system.
G
Warning!
Severe conditions (e.g. strong air pollution)
may require replacement of the filter before
its scheduled replacement interval. A clogged
filter will reduce the air volume to the interior
and the windows could fog up, impairing
visibility and endangering you and others.
Have a clogged filter replaced as soon as
possible at an authorized Mercedes-Benz
Center.
The air conditioning will not engage (no
cooling) if the A/C mode is deactivated
( Y page 178).
G
Warning!
Follow the recommended settings for heating
and cooling given on the following pages.
Otherwise the windows could fog up,
impairing visibility and endangering you and
others.
Keep the air intake grille in front of the
windshield free of snow and debris.
i If the vehicle interior is hot, ventilate the
interior before driving off, see "Summer
opening feature" (
control will then adjust the interior
temperature to the set value much faster.
( Y page 183)
Y page 102). The climate
177
Z