Air Recirculation Mode - Mercedes-Benz 2009 CL-Class Operator's Manual

Controls in detail
Climate control system
sliding sunroof or tilt/sliding panel are
closed).
i Maximum cooling MAX COOL is only
available when the engine is running.

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.
G 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
window fogging persists, make sure the air
conditioning is activated, or press button
y.
X
Activating: Press rocker switch
down.
The indicator lamp in the rocker switch
comes on.
392
i The air recirculation mode is activated
automatically at high outside
temperatures.
The indicator lamp in rocker switch
not lit when the air recirculation mode is
switched on automatically.
A quantity of outside air is added when the
cooling demand is not at maximum.
If the air conditioning has been turned off
or the outside temperature is below 41‡
(5†), the air recirculation mode will not
switch on automatically.
X
Deactivating: Press rocker switch
or down.
The indicator lamp in the rocker switch
goes out.
up or
,
i The manually selected air recirculation
mode is deactivated automatically:
after 5 minutes if the outside
R
is
,
temperature is below approximately
41‡ (5†)
after 5 minutes if the air conditioning is
R
turned off
after 30 minutes if the outside
R
temperature is above approximately
41‡ (5†)
Residual heat and ventilation
up
,
With the engine switched off, it is possible to
continue to heat or ventilate the interior for
up to 30 minutes. This feature makes use of
the residual heat produced by the engine.
i If you switch on the residual heat function
when outside temperatures are high, only
the ventilation will be switched on.
i Regardless of the selected air volume, the
blower operates at low speed when
heating. In case of ventilation the blower
operates at higher speed.
i How long the system will provide heating
depends on the coolant temperature and