Mercedes-Benz E-Class 2010 Owner's Manual page 131

Operating climate control systems
128
or down ( page 122) until the P or
Y
O symbol appears in the display.
i
You should only select this setting until
the windscreen is clear again.
Rear window heating
Switching on/off
G
Risk of accident
Clear all windows of ice or snow before setting
off. Otherwise, impaired visibility could
endanger you and others.
The rear window heating has a high current
draw. You should therefore switch it off as
soon as the window is clear as it only switches
off automatically after several minutes.
If the battery voltage is too low, the rear win-
dow heating may switch off.
Turn the key to position 2 in the ignition
X
lock.
Press the ¤ button.
X
The indicator lamp above the ¤ button
lights up or goes out.
Problems with the rear window heating
The rear window heating has deactivated
itself prematurely or cannot be activated.
Switch off any consumers that are not
X
required, e.g. reading lamps or interior
lighting.
When the battery is sufficiently charged,
the rear window heating is activated again
automatically.
Activating/deactivating air-recircula-
tion mode
You can deactivate the flow of fresh air if
unpleasant odours are entering the vehicle
from outside. The air already inside the vehi-
cle will then be recirculated.
The operation of the air-recirculation mode is
the same for all control panels.
G Risk of accident
Only switch over to air-recirculation mode
briefly at low outside temperatures. Other-
wise, the windows could mist up, thus impair-
ing visibility and endangering yourself and
others. This may prevent you from observing
the traffic conditions, thereby causing an
accident.
Turn the key to position 2 in the ignition
X
lock.
To activate: press the g button.
X
The indicator lamp above the g button
lights up.
i
Air-recirculation mode is activated auto-
matically at high outside temperatures.
When air-recirculation mode is activated
automatically, the indicator lamp above the
g button is not lit.
Outside air is added after about 30
minutes.
To deactivate: press the g button.
X
The indicator lamp above the g button
goes out.
i
Air-recirculation mode switches off auto-
matically:
after approximately five minutes at out-
R
side temperatures below approximately
5 †
after approximately five minutes if cool-
R
ing with air dehumidification is deactiva-
ted
after approximately 30 minutes at out-
R
side temperatures above approximately
5 †