Air Conditioning; Using Driver-Side Settings For All Temperature Zones - Mercedes-Benz 2008 M-Class Operator's Manual

Air conditioning

The cooling function, only operational
when the engine is running, cools the vehi-
cle down to the selected interior tempera-
ture. The cooling function also
dehumidifies the air in the vehicle interior,
thereby preventing the windows from fog-
ging up.
i
Condensation may drip out from underneath
the vehicle. This is normal and not an indication
of a malfunction.
Warning!
If you turn off the cooling function, the
interior air is not dried. The windows can fog
up more quickly. Window fogging may
impair visibility and endanger you and
others.
Deactivating
It is possible to deactivate the air condi-
tioning (cooling) function of the automatic
climate control system. The air in the vehi-
cle will then no longer be cooled or dehu-
midified.
Press button 9 ( page 220).
The indicator lamp on the button goes
out. The cooling function switches off
after a short delay.
Activating
G
Moist air can fog up the windows. You can
dehumidify the air with the air condition-
ing.
Press button 9 again.
The indicator lamp on the button
comes on.
The air conditioning uses the refrigerant
R-134a. This refrigerant is free of CFCs
which are harmful to the ozone layer.
Controls in detail
3-zone automatic climate control*
!
If the air conditioning cannot be turned on
again, this indicates that the air conditioning is
losing refrigerant. The compressor has turned
off.
Have the air conditioning checked at the nearest
authorized Mercedes-Benz Light Truck Center.
Using driver-side settings for all tem-
perature zones
You can use the settings of the driver's
side, such as temperature, air volume and
air distribution, for all temperature zones.
These settings only need to be made once
and the automatic climate control system
will automatically regulate the settings for
all temperature zones quickly and comfort-
ably.
229