Mercedes-Benz M-Class 2008 Owners Manual - Manual (Page 228)

227
Controls in detail
3-zone automatic climate control*
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.
Activating
̈ Press button : ( ୴ page 220).
The indicator lamp on the button
comes on.
Deactivating
̈ Press button : ( ୴ page 220).
The indicator lamp on the button
comes on.
At outside temperatures above 79°F
(26°C) the system will not automatically
switch back to outside air. A quantity of
outside air is added after approximately
30 minutes.
Warning!
G
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 ( ୴ page 229) is activated, or
press button |.
i The air recirculation mode is activated auto-
matically at high outside temperatures.
The indicator lamp on button : is not lit when
the air recirculation mode is automatically
switched on.
A quantity of outside air is added after approxi-
mately 30 minutes.
If you have turned off the air conditioning
(
୴ page 229) or the outside temperature is
below 41°F (5°C), the air recirculation mode will
not switch on automatically.
i To cool the interior as fast as possible, the
automatic climate control automatically switch-
es to air recirculation. The indicator lamp on
button
: is not lit when the system switches
to air recirculation automatically.
i The air recirculation mode is deactivated
automatically
ț after 5 minutes if the outside temperature is
below approximately 41°F (5°C)
ț after 5 minutes if the air conditioning and
air-drying is turned off
ț after 30 minutes if the outside temperature
is above approximately 41°F (5°C)