Mercedes-Benz 2009 M-Class Automobile User Manual


 
213
Controls in detail
Climate control
Front defroster
You can use this setting to defrost the
windshield, for example if it is iced up. You
can also use it to defog the windshield and
side windows.
Activating
̈ Press button 0( page 208).
The indicator lamp on the button
comes on.
The climate control switches to the follow-
ing functions automatically:
ț maximum blower speed and heating
power
ț air flows onto the windshield and the
front side windows (side air vents must
be open)
ț the air conditioning compressor
switches on at outside temperatures
above approximately 41°F (5°C) for
air-drying
Deactivating
̈ Press button 0 ( page 208) once
more.
The indicator lamp on the button goes
out. Defrosting is turned off.
The previous settings are in effect
again. The air conditioning compressor
remains switched on.
Windshield fogged on the outside
̈ Switch the windshield wipers on
(
page 61).
̈ Press button 0(page 208).
The indicator lamp on the button
comes on.
The climate control switches automatically
to the following functions:
ț maximum blower speed and heating
power
ț air flows onto the windshield and the
front side windows (side air vents must
be open)
ț the air conditioning compressor
switches on at outside temperatures
above approximately 41°F (5°C) for
air-drying
If the automatic air distribution is switched
off:
̈ Press air distribution button 9 or a
(
page 208).
i
Keep this setting selected only until the
windshield or the side windows are clear again.
When the defrost setting has been selected, only
the rear window defroster can be switched on.
No other settings are possible.
i
To switch off, you can also press
button ´ or U (
page 208).
i
Keep this setting selected only until the
windshield is clear again.