Mercedes-Benz 2010 GL-Class Operator's Manual page 180

Climate control
178
The air conditioning uses the refrigerant
R134a. This refrigerant is free of CFCs which
are harmful to the ozone layer.
! If the air conditioning cannot be activated
again, this indicates that the air
conditioning is losing refrigerant. The
compressor has turned off.
Have the air conditioning checked at the
nearest authorized Mercedes-Benz Center.
Automatic mode
When operating the climate control system in
automatic mode, the interior air temperature,
air volume and air distribution are adjusted
automatically.
In automatic mode, cooling with
dehumidification is switched on. This function
can be switched off if necessary.
G
Warning!
If you switch off the air conditioning, the
vehicle will not be cooled when weather
conditions are warm. The windows can fog up
more quickly. Window fogging may impair
visibility and endanger you and others.
X
Set the desired temperature
( Y page 178).
X
Activating: Press button Ã.
The indicator lamp in the button comes on.
The air volume and air distribution are
adjusted automatically.
i
The settings for the passenger side are
also used for the rear passenger
compartment.
X
Deactivating: Press button I or K.
The indicator lamp in button à goes out.
The automatic operation of air volume
switches off. The selected blower speed is
shown in air volume display G
( Y page 175).
or
X
Press air distribution button ¯, P, or
O.
The indicator lamp in button à goes out.
The automatic operation of air distribution
switches off.
Setting the temperature
You can adjust the air temperature on each
side of the passenger compartment. You
should raise or lower the temperature setting
in small increments, preferably starting at
72‡ (22†).
X
Increasing/decreasing: Turn
temperature control : and/or C
( Y page 175) slightly clockwise or
counterclockwise.
Adjusting air distribution
The air distribution can be adjusted manually.
The symbols on the buttons represent the
following functions:
Symbol Function
Directs air to the windshield and
¯
side air vents
P Directs air through the center
and side air vents
Directs air to the footwells and
O
side air vents
X
Press the desired air distribution button
¯, P, or O.
The indicator lamp in button à goes out.
The automatic mode is switched off. Air
distribution is controlled according to the
desired button.