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Activating/deactivating
X
Select key position 2 with the Start/Stop
button (Y page 111).
X
Press the ¤ rocker switch up or down.
The indicator lamp above the ¤ rocker
switch lights up or goes out.
Problems with the rear window defroster
Problem
Possible causes/consequences and MM Solutions
The rear window
defroster has deactiva-
ted prematurely or can-
not be activated.
The battery has not been sufficiently charged.
X
Switch off any consumers that are not required, e.g. reading lamps,
interior lighting or the seat heating.
When the battery is sufficiently charged, the rear window defroster
can be activated again.
Switching air-recirculation mode
on/off
General notes
You can also temporarily deactivate the flow of
fresh air manually if unpleasant odors are enter-
ing the vehicle from outside. The air already
inside the vehicle will then be recirculated.
If you switch on air-recirculation mode, the win-
dows can fog up more quickly, in particular at
low temperatures. Only use air-recirculation
mode briefly to prevent the windows from fog-
ging up.
Activating/deactivating
X
Select key position 2 with the Start/Stop
button (Y page 111).
X
To activate: press the g rocker switch up
or down.
The indicator lamp above the g rocker
switch lights up.
Air-recirculation mode switches on automati-
cally:
R
at high outside temperatures
R
in a tunnel (vehicles with a navigation system
only)
The indicator lamp above the g rocker
switch is not lit when automatic air-recirculation
mode is activated. Outside air is added after
about 30 minutes.
X
To deactivate: press the g rocker switch
up or down.
The indicator lamp above the g rocker
switch goes out.
Air-recirculation mode deactivates automati-
cally:
R
after approximately five minutes at outside
temperatures below approximately 41 ‡
(5 †)
R
after approximately five minutes if cooling
with air dehumidification is deactivated
R
after approximately 30 minutes at outside
temperatures above approximately 41 ‡
(5 †) if the "Cooling with dehumidification"
function is activated
Air vents
Important safety notes
G
WARNING
Very hot or very cold air can flow from the air
vents. This could result in burns or frostbite in
the immediate vicinity of the air vents. There
is a risk of injury.
Make sure that all vehicle occupants always
maintain a sufficient distance to the air out-
lets. If necessary, redirect the airflow to
another area of the vehicle interior.
Air vents
107
Climate control
Z
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