climate settings MERCEDES-BENZ GLK SUV 2012 Owners Manual

Fuse box in the luggage compart-
ment
.............................................. 347
Important safety notes ..................346 G
Gear or selector lever (cleaning
instructions) ...................................... 322
Genuine Mercedes-Benz parts .........362
Glove compartment ..........................297 H
Handbrake see Parking brake
Hazard warning lamps ......................114
Headlamp Cleaning system (function) ............114
Cleaning system (notes) ................372
Headlamps
Misting up ...................................... 117
Topping up the cleaning system ....317
see Automatic headlamp mode
Head restraints
Adjusting ......................................... 98
Adjusting (electrically) .....................99
Adjusting (manually). .......................98
Adjusting (rear) ................................ 99
Fitting/removing (rear) ....................99
see NECK-PRO head restraints
see NECK-PRO head restraints/
NECK-PRO luxury head restraints
Heating
see Climate control
High-pressure cleaners ....................318
Hill start assist .................................. 150
HOLD function Display message (12-button mul-
tifunction steering wheel) ..............271
Display message (4-button multi-
function steering wheel) ................270
Function/notes ............................. 186 I
Ignition lock see Key positions
Immobiliser .......................................... 71Indicator and warning lamps
Coolant .......................................... 292
DISTRONIC PLUS ........................... 294
Engine diagnostics .........................291
Fuel tank ........................................ 292
Overview (12-button multifunc-
tion steering wheel) .........................34
Overview (4-button multifunction
steering wheel) ................................ 32
Indicator lamps
see Warning and indicator lamps
Insect protection on the radiator ....315
Inspection see ASSYST PLUS
Instrument cluster (12-button mul-
tifunction steering wheel)
Indicator and warning lamps ............34
Overview .......................................... 33
Settings ......................................... 238
Instrument cluster (4-button mul-
tifunction steering wheel)
Indicator and warning lamps ............32
Overview .......................................... 31
Instrument cluster lighting ..............239
Multifunction steering wheel with
4 buttons ....................................... 224
Intelligent Light System
Activating/deactivating (12-but-
ton multifunction steering wheel) ..240
Display message (12-button mul-
tifunction steering wheel) ..............263
Overview ........................................ 114
Interior lighting ................................. 117
Automatic control system ..............118
Delayed switch-off (12-button
multifunction steering wheel) ........241
Emergency lighting ........................118
Manual control ............................... 118
Overview ........................................ 117
Reading lamp ................................. 117
Setting brightness for display/
switches (on-board computer) .......239
Interior motion sensor ........................73
ISOFIX child seat securing system ....57 Index
13

Useful information
i This Owner's Manual describes all mod-
els, series and optional equipment for your
vehicle that were available at the time of
going to press. National variations are pos-
sible. Note that your vehicle may not be
equipped with all of the functions descri-
bed. This is also the case for systems and
functions relevant to safety.
i Read the information on qualified special-
ist workshops: (Y page 27). Overview of climate control systems
Important safety notes
G
WARNING
Observe the settings recommended on the
following pages. The windows could other-
wise mist up. This may prevent you from
observing the traffic conditions, thereby caus-
ing an accident.
Climate control regulates the temperature
and the humidity in the vehicle interior and
filters undesirable substances out of the air.
Climate control is only operational when the
engine is running. The system only works
optimally if the side windows and the roof are
closed.
The residual heat function can only be acti-
vated or deactivated with the ignition
switched off (Y page 136).
i Ventilate the vehicle for a brief period
during warm weather, e.g. using the con-
venience opening feature (Y page 90). This
will speed up the cooling process and the
desired vehicle interior temperature will be
reached more quickly.
i The integrated filter can filter out most
particles of dust and completely filters out
pollen. A clogged filter reduces the amount
of air supplied to the vehicle interior. For
this reason, you should always observe the interval for replacing the filter, which is
specified in the Service Booklet. As it
depends on environmental conditions, e.g.
heavy air pollution, the interval may be
shorter than stated in the Service Booklet.
i It is It is possible that the dehumidification
function of the climate control system may
be activated automatically an hour after the
key has been removed. The vehicle is then
ventilated for 30 minutes. 128
Overview of climate control systemsClimate control

Control panel for THERMATIC automatic climate control (2-zone)
:
Setting the temperature, left (Y page 132)
; Demisting the windscreen (Y page 134)
= Switching the ZONE function on/off (Y page 134)
? Activating/deactivating cooling with air dehumidification (Y page 131)
A Switching the rear window heating on/off (Y page 135)
B Setting the temperature, right (Y page 132)
C Activating/deactivating air-recirculation mode (Y page 135)
D Setting the air distribution (Y page 133)
E Increasing the airflow (Y page 134)
F Reducing the airflow ( Ypage 134)
G Switching climate control on/off (Y page 131)
H Setting climate control to automatic mode (Y page 132)Notes on using THERMATIC automatic
climate control
The following contains notes and recommen-
dations on optimum use of THERMATIC auto-
matic climate control.
R Activate climate control using the Ãand
¿ buttons. The indicator lamps in the
à and¿ buttons light up.
R Set the temperature to 22 †.
R Only use the demisting function briefly until
the windscreen is clear again. R
Only use the air-recirculation mode briefly,
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.
R Use the ZONE function to adopt the tem-
perature settings on the driver's side for
the front-passenger side as well. The indi-
cator lamp in the ábutton goes out. Overview of climate control systems
129Climate control Z

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.
R Activate climate control using the Ãand
¿ buttons. The indicator lamps in the
à and¿ buttons light up.
R In automatic mode, you can also use the
ñ button to set a climate mode
(FOCUS/MEDIUM/DIFFUSE). The
MEDIUM level is recommended.
R Set the temperature to 22 †.
R Only use the demisting function briefly until
the windscreen is clear again.
R Only use the air-recirculation mode briefly,
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.
R Use the ZONE function to adopt the tem-
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.
R Use the residual heat function if you want
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 ( Ypage 132). Switching on/off X
Turn the key to position 2in the ignition
lock.
X To switch on: press theÃbutton.
The indicator lamp in the Ãbutton lights
up. Airflow and air distribution are set to
automatic mode.
or
X Press the ^button.
The indicator lamp in the ^button goes
out. The previous settings are reactivated.
X To switch off: press the^button.
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. Operating the climate control system
131Climate control Z

THERMOTRONIC automatic climate
control THERMOTRONIC automatic climate control zones
You can select different temperature settings
for the driver's and front-passenger sides as
well as for the rear compartment.
X Turn the key to position 2in the ignition
lock.
X To increase/reduce the temperature in
the front: turn controls :and Bclock-
wise or anti-clockwise (Y page 130).
Only change the temperature setting in
small increments. Start at 22 †.
X To increase/reduce the temperature in
the rear compartment using the front
control panel: press theábutton.
The indicator lamp in the ábutton goes
out.
X Turn control :clockwise or anti-clockwise
(Y page 130).
Only change the temperature setting in
small increments. Start at 22 †.
X To increase/reduce the temperature in
the rear compartment using the rear
control panel: press the9or:
button on the rear control panel.
Only change the temperature setting in
small increments. Start at 22 †.
i If you leave the vehicle parked for longer
than 30 minutes, the temperature setting
for the rear compartment then switches
back to 22 †. Setting the air distribution
Air distribution settings THERMATIC automatic climate control: the
air distribution can be set individually for the
driver's and front-passenger sides.
¯
Directs the airflow through the demis-
ter vents
P Directs the airflow through the centre
and side air vents
O Directs the airflow through the foot-
well air vents
S Directs the airflow through the centre
and side air vents as well as the foot-
well air vents 10
_ Directs the airflow to the entire vehicle
interior
b Directs the airflow through the centre
and side air vents as well as the demis-
ter vents 10
a Directs the airflow through the foot-
well and demister vents
i Regardless of the air distribution setting,
airflow is always directed through the side
air vents. The side air vents can only be
closed when the controls on the side air
vents are turned downwards.
Adjusting X
Turn the key to position 2in the ignition
lock.
X Press the _button repeatedly until the
desired symbol appears in the display.
The indicator lamp in the Ãbutton goes
out. Automatic control is deactivated and
the air distribution is controlled according
to the selected setting.
10 Only for certain countries. Operating the climate control system
133Climate control Z

Setting the airflow
X Turn the key to position 2in the ignition
lock.
X To increase/reduce: press theKor
I button. Switching the ZONE function on/off
X To switch on: press theábutton.
The indicator lamp in the ábutton lights
up.
THERMATIC automatic climate control: the
temperature setting for the driver's side is
not adopted for the front-passenger side.
THERMOTRONIC automatic climate con-
trol: the temperature setting for the driver's
side is not adopted for the front-passenger
side and the rear compartment.
When the buttons for temperature, airflow or
air distribution are activated, the temperature
setting on the driver's side is not adopted for
the other climate control zones.
X To switch off: press theábutton.
The indicator lamp in the ábutton goes
out.
THERMATIC automatic climate control: the
temperature setting for the driver's side is
adopted for the front-passenger side.
THERMOTRONIC automatic climate con-
trol: the temperature setting for the driver's
side is adopted for the front-passenger side
and the rear compartment. Demisting the windscreen
You can use this function to demist the wind-
screen or to demist the inside of the wind-
screen and the side windows.
i You should only select the demisting
function until the windscreen is clear again. X
Turn the key to position 2in the ignition
lock.
X To activate: press the¬button.
The indicator lamp in the ¬button lights
up.
The climate control system switches to the
following functions:
R high airflow
R high temperature
R air distribution to the windscreen and
front side windows
R air-recirculation mode off
X To deactivate: press the¬button.
The indicator lamp in the ¬button goes
out. The previous settings are reactivated.
Air-recirculation mode remains deactiva-
ted.
or
X Press the Ãbutton.
The indicator lamp in the ¬button goes
out. Airflow and air distribution are set to
automatic mode.
or
X Turn temperature control :orB clock-
wise or anti-clockwise (Y page 129),
(Y page 130).
or
X Press the KorI button. Demisting the windows
Windows misted up on the inside X
Activate the ¿cooling with air dehu-
midification function.
X Activate automatic mode Ã.
X If the windows continue to mist up, activate
the demisting function (Y page 134).
i You should only select this setting until
the windscreen is clear again. 134
Operating the climate control systemClimate control

Setting the centre air vents
X
To open the centre air vent: turn the
adjuster in one of centre air vents :anti-
clockwise.
X To close the centre air vent: turn the
adjuster in one of centre air vents :clock-
wise until it engages. Setting the side air vents
:
Side window demister vent
; Side air vent
X To open a side air vent: turn the adjuster
in side air vent ;anti-clockwise.
X To close a side air vent: turn the adjuster
in side air vent ;clockwise until it
engages. Setting the glove compartment air
vent
When automatic climate control is activated,
the glove compartment can be ventilated, for
instance to cool its contents. The level of air-
flow depends on the airflow and air distribu-
tion settings.
! Close the air vent when heating the vehi-
cle.
At high outside temperatures, open the air
vent and activate the "cooling with air dehu-
midification" function. Otherwise, temper-
ature-sensitive items stored in the glove
compartment could be damaged. :
Air vent thumbwheel
; Air vent
X To open/close: turn thumbwheel :
clockwise or anti-clockwise. 142
Adjusting the air ventsClimate control