Mercedes-Benz V-Class Operating Instructions Manual page 157

DEFROST air distribution ¯
R
Y
( page 152) or
MAX DEFROST ¬ (
R
X
Close the side air vents if required
Y
( page 169).
Switching the rear window heating
on/off
General notes
The rear window heating consumes a lot of
power. You should therefore switch it off as
Problems with the rear window heating
Problem
The rear window heating
has switched off prema-
turely or cannot be acti-
vated.
Activating/deactivating air-recircula-
tion mode
Important safety notes
You can deactivate the intake of fresh air if
unpleasant odours enter the vehicle from out-
side. The air inside the vehicle is then circulated.
When you activate air-recirculation mode, the
side windows and windows could mist up more
quickly, in particular at low outside tempera-
tures. Only activate air-recirculation mode for a
short time.
Activating and deactivating
X
Press the g rocker switch up or down.
When the indicator lamp above the g
rocker switch lights up, air-recirculation mode
is activated.
Air-recirculation mode activates automatically:
at high outside temperatures
R
while driving in a tunnel (only vehicles with
R
THERMOTRONIC automatic climate control)
Operating the climate control system
Y
page 144)
Possible causes/consequences and M Solutions
The battery has not been sufficiently charged.
X
Switch off any consumers that are not required, e.g. reading lamps,
interior lighting or seat heating.
When the battery is sufficiently charged, the rear window heating
can be activated again.
soon as the window is clear. Otherwise, the rear
window heating only switches off automatically
after several minutes.
If the battery voltage is too low, the rear window
heating may switch off.
Switching on/off
X
Turn the key to position 2 in the ignition lock.
X
Press the ¤ rocker switch up or down.
The indicator lamp above the ¤ rocker
switch lights up or goes out.
The indicator lamp above the g rocker
switch does not light up. Outside air is added
automatically after about 30 minutes.
Air-recirculation mode is deactivated automati-
cally:
after approximately five minutes at outside
R
temperatures below about 7 †
after approximately five minutes when the
R
cooling with air-dehumidification function is
deactivated
after approximately 30 minutes at outside
R
temperatures above about 7 † and when the
cooling with air-dehumidification function is
active
Convenience opening/closing feature
via the air recirculation button
G
WARNING
When using convenience closing, you could
become trapped within the sweep of the clos-
ing window. There is a risk of injury.
155
Z