Mercedes-Benz GL-Class 2012 Owners Manual - Manual (Page 145)

The climate control system switches to the
following functions:
R
cooling with air dehumidification on
R high airflow 19
R high temperature 19
R air distribution to the windshield and
front side windows
R
air-recirculation mode off
X To switch off: press the ¦ button.
The indicator lamp in the ¦ button goes
out. The previously selected settings come
into effect again. The cooling with air
dehumidification function remains on. Air-
recirculation mode remains deactivated.
or
X Press the ^ button.
or
X Press the à button.
or
X Turn the temperature control clockwise or
counter-clockwise.
or
X Press the K or I button.
Defrosting the windows
Windows fogged up on the inside
X Activate the cooling with air
dehumidification function Á.
X Activate automatic mode Ã.
X If the windows continue to fog up, activate
the defrosting function (
Y page 142).
i You should only select this setting until
the windshield is clear again.
Windows fogged up on the outside
X Switch on the windshield wipers.
X Press the P/\ 20 or O/c 20
air distribution button.
i You should only select this setting until
the windshield is clear again.
Rear window defroster
Activating/deactivating
G
WARNING
Any accumulation of snow and ice should be
removed from the rear window before driving.
Visibility could otherwise be impaired,
endangering you and others.
The rear window defroster 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
window defroster may switch off.
X Turn the SmartKey to position 2 in the
ignition lock.
X Press the ª button.
The indicator lamp in the ª button lights
up or goes out.
Problems with the rear window
defroster
If the indicator lamp in the ª rear window
defroster button flashes, the on-board
voltage is too low or the roof is open. The rear
window defroster has deactivated itself
prematurely or cannot be activated.
X Switch off any consumers that are not
required, e.g. reading lamps or interior
lighting.
When the battery is sufficiently charged,
the rear window defroster is activated
again automatically.
19 Depending on the outside temperature.
20 Canada only.
Operating the climate control system
143
Climate control
Z