Air Vents In The Roof Liner Over The Second-Row Seats; Front Defroster - Mercedes-Benz GL450 Operator's Manual

Air vents in the roof liner over the
second-row seats*
1 Thumbwheel for air volume control
2 Air vent, adjustable
Adjusting air volume
Turn thumbwheel 1 down to decrease
the air volume.
or
Turn thumbwheel 1 up to increase the
air volume.
Adjusting air distribution
Move air vent slider 2 to the left, right,
up, or down to direct the air in the de-
sired direction.

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.
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.
Controls in detail
Climate control
Activating
Press button 0( page 214).
The indicator lamp on the button
comes on.
The climate control switches to the follow-
ing functions automatically:
maximum blower speed and heating
power
air flows onto the windshield and the
front side windows (side air vents must
be open)
the air conditioning compressor
switches on at outside temperatures
above approximately 41°F (5°C) for
air-drying
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