Air Recirculation Mode - Mercedes-Benz 2008 M-Class Operator's Manual

Controls in detail
Climate control
Deactivating
Press button | ( page 206) once
more.
The indicator lamp on the button goes
out. Defrosting is turned off.
The previous settings are in effect
again. The air conditioning compressor
remains switched on.
i
To switch off, you can also press
button ´ or U ( page 206).
Windshield fogged on the outside
i
Keep this setting selected only until the
windshield is clear again.
Switch the windshield wipers on
( page 61).
Press button | ( page 206).
The indicator lamp on the button
comes on.
212
The climate control switches automatically
to the following functions:
most efficient blower speed and
heating power, depending on outside
temperature
air flows onto the windshield and the
front door windows (side air vents must
be open)
the air conditioning compressor
switches on at outside temperatures
above approximately 41°F (5°C) for
air-drying
If the automatic air distribution is switched
off:
Press air distribution button 9 or a
( page 206).

Air recirculation mode

Switch to air recirculation mode to prevent
unpleasant odors from entering the vehicle
from the outside (e.g. before driving
through a tunnel). This setting cuts off the
intake of outside air and recirculates the
air in the passenger compartment.
Warning!
Fogged windows impair visibility,
endangering you and others. If the windows
begin to fog on the inside, switching off the
air recirculation mode immediately should
clear interior window fogging. If interior win-
dow fogging persists, make sure the air
conditioning ( page 206) is activated, or
press button |.
G