Adjusting Air Volume; Front Defroster - Mercedes-Benz 2008 M-Class Operator's Manual

Opening the side air vents
Turn thumbwheels 3 and b
( page 218) to the right.
The corresponding side air vents on the
left and right are open.
Closing the side air vents
Turn thumbwheels 3 and b
( page 218) to the left.
The corresponding side air vents on the
left and right are closed.

Adjusting air volume

Five blower speeds are available.
Press button ˜ to decrease or
button Q to increase air volume
( page 220) to the desired level.
The indicator lamp on button U
goes out.
The automatic mode is switched off.
The selected blower speed appears in
the display e ( page 220).

Front defroster

You can use this setting to defrost the
windshield, such as when it is iced up. You
can also use it to defog the windshield and
door windows.
i
Keep this setting selected only until the
windshield or the side windows are clear again.
Activating
Press button | ( page 220).
The indicator lamp on the button
comes on.
The automatic climate control switches to
the following functions automatically:
most efficient blower speed and
heating power, depending on outside
temperature
air flows onto the windshield and the
front door windows (side air vents must
be open)
Controls in detail
3-zone automatic climate control*
the air conditioning compressor
switches on at outside temperatures
above approximately 41°F (5°C) for
air-drying
Adjustments
You can adjust the air volume and the tem-
perature when the front defroster is
switched on. The air flow will remain on the
windshield and front door windows.
Press button ˜ to decrease or
button Q to increase air volume
( page 220) to the desired level.
The air volume decreases/increases to
the next lower/higher blower speed
and heating switches to the tempera-
ture that was set before the front de-
froster was switched on.
The indicator lamp on button |
goes out. The indicator lamp on
button 9 comes on.
or
225