Operating The Climate Control System - Mercedes-Benz GLK 300 4MATIC 2012 Owner's Manual

Notes on using THERMOTRONIC auto-
matic climate control
The following contains instructions and rec-
ommendations to enable you to get the most
out of your THERMOTRONIC automatic cli-
mate control.
Activate climate control using the à and
R
¿ buttons. The indicator lamps in the
à and ¿ buttons light up.
In automatic mode, you can also use the
R
ñ button to set a climate mode
(FOCUS/MEDIUM/DIFFUSE). The
MEDIUM level is recommended.
Set the temperature to 22 †.
R
Only use the demisting function briefly until
R
the windscreen is clear again.
Only use the air-recirculation mode briefly,
R
e.g. if there are unpleasant outside odours
or when in a tunnel. The windows could
otherwise mist up as no fresh air is drawn
into the vehicle in air-recirculation mode.
Use the ZONE function to adopt the tem-
R
perature settings on the driver's side for
the front-passenger side and the rear com-
partment as well. The indicator lamp in the
á button goes out.
Use the residual heat function if you want
R
to heat or ventilate the vehicle interior
when the ignition is switched off. The resid-
ual heat function can only be activated or
deactivated with the ignition switched off.

Operating the climate control system

Switching climate control on/off
Points to observe before use
i
If climate control is switched off, the air
supply and air circulation are also switched
off. Only use this setting for a brief period.
The windows could otherwise mist up.
i
Switch on climate control primarily using
the à button (
Y
Operating the climate control system
page 132).
Switching on/off
Turn the key to position 2 in the ignition
X
lock.
To switch on: press the à button.
X
The indicator lamp in the à button lights
up. Airflow and air distribution are set to
automatic mode.
or
Press the ^ button.
X
The indicator lamp in the ^ button goes
out. The previous settings are reactivated.
To switch off: press the ^ button.
X
The indicator lamp in the ^ button lights
up.
Activating/deactivating the cooling
with air dehumidification function
Points to observe before use
G
WARNING
If the "cooling with air dehumidification" func-
tion is deactivated, the air inside the vehicle
will not be cooled (during warm weather) or
dehumidified. The windows could mist up
more quickly. This may prevent you from
observing the traffic conditions, thereby caus-
ing an accident.
The cooling with air dehumidification function
is only available when the engine is running.
The air inside the vehicle is cooled and dehu-
midified according to the temperature selec-
ted.
Condensation may drip from the underside of
the vehicle when cooling mode is active. This
is normal and not a sign that there is a mal-
function.
i
The cooling with air dehumidification
function uses refrigerant R134a. This
refrigerant does not contain chlorofluoro-
carbons, and therefore does not damage
the ozone layer.
131
Z