cooling MERCEDES-BENZ GLK SUV 2008 Owners Manual

1, 2, 3 ...
4MATIC (permanent four-wheel
drive)................................................... 105A
ABS (Anti-lock Brake System) Display message (luxury multi-
function steering wheel) .........183, 185
Display message (multi-function
steering wheel). .............................. 178
ABS (Anti-lock Braking System).......... 51
Warning lamp.................................. 201
Acceleration ........................................ 249
Accident Notes. ............................................. 205
Acoustic warning signal
see Warning tone
Active Service System PLUS
see Service interval display
Adaptive brake lamps ..........................52
Airbags Activation.......................................... 35
Control unit....................................... 35
Driver's ............................................. 38
Driver's knee airbag. .........................39
Front. ................................................ 38
Front passenger ................................ 38
PASSENGER AIRBAG OFF warning
lamp .............................................. 200
Sidebag............................................. 39
System.............................................. 37
Windowba g....................................... 39
Air conditioning
2-zone Thermatic ............................ 118
3-zone Thermotronic....................... 120
Activating/deactivating ..................121
Activating/deactivating air-recir-
culation mode. ................................ 125
Controlling automatically. ...............122
Convenience opening/closing
(air-recirculation mode). .................126
Cooling with air dehumidification ...121
Demisting the windscreen ..............124
Malfunction indicator lamp. ............199
Misted-up windows. ........................125
Rear window heating ......................125Setting the air distribution.
.............124
Setting the airflow .......................... 124
Setting the air vents .......................122
Setting the temperature .................122
Switching the residual heat func-
tion on/off ...................................... 126
Air-conditioning system
see Air conditioning
Air filter
Display message ............................. 195
Air pressure
see Tyre pressure
Antifreeze concentration................... 248
Anti-lock braking system see ABS
Anti-theft alarm system
see ATA
Anti-theft systems................................ 54
Ashtray ................................................ 138
ASSYST PLUS see Service interval display
ASSYST PLUS service indicator ........167
Calling up the date (on-board
computer). ...................................... 167
ATA (anti-theft alarm system) .............54
Switching off the alarm. ....................55
Audio
On-board computer (luxury multi-
function steering wheel) ...................98
Audio DVD
Operating (on-board computer,
luxury multi-function steering
wheel). .............................................. 99
AUTO lights
Display message ............................. 189
Automatic car wash ...........................168
Automatic transmission Changing gear yoursel f..................... 86
Driving tips ....................................... 87
Emergency running mode ...............209
Indicator in the multi-function dis-
play .................................................. 85
Malfunction..................................... 209
One-touch gearshifting. ....................86
Program selector button ...................87
Releasing the parking lock man-
ually. ............................................... 2154 Index
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Air conditioning
Overview of air-conditioning systems
The vehicle is equipped with one of the following air-conditioning systems: 2-zone Thermatic
Front control unit The 2-zone Thermatic automatic air condi-
tioning system combines an automatic heat-
ing and ventilation system with a cooling sys-
tem. You can control the temperature sepa-
rately for the driver's and front-passenger
sides. 3-zone Thermotronic*
Front control unit
Rear control panel The 3-zone Thermotronic automatic air con-
ditioning system combines an automatic
heating and ventilation system with a cooling
system. You can control the temperature
separately for the driver's and front-
passenger sides and the rear compartment.
You can control the airflow separately for the
front and rear compartments. You can con-
trol the air distribution separately for the
driver's and front-passenger sides. General notes
2-zone Thermatic/3-zone Thermotronic*
controls the temperature and the humidity of
the vehicle interior and filters out undesirable
substances from the air.
2-zone Thermatic/3-zone Thermotronic* is
only operational when the engine is
running. 24
Optimum operation is only ach-
ieved when you drive with the side windows
and panorama sliding sunroof* closed. i
Ventilate the vehicle for a brief period
during warm weather, e.g. using the con-
venience opening feature (Y page 82). 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
24 3-zone Thermotronic*: the "residual heat" function can only be activated or deactivated if the ignition is turned off. Air conditioning
117Controls
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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. G
Risk of accident
Observe the settings recommended on the
following pages. Otherwise, the windows could mist up. This may obstruct your view of
the traffic situation and, as a result, you may
cause an accident.
Overview of air-conditioning system functions
2-zone Thermatic Function
:
Sets the temperature, left
;
Sets the air-conditioning system to
automatic
=
Switches the air conditioning on/
off
?
Switches the mono function on/off
A
Switches cooling with air dehumid-
ification on/off
B
Demists the windscreen
C
Activates/deactivates air-recircu-
lation mode
D
Sets the temperature, right
E
Switches the rear window heating
on/off Function
F
Increases the airflow
G
Reduces the airflow
H
Display
I
Sets the air distribution
i
Instructions and recommendations for
optimum air conditioning:
R activate the air conditioning using
the à and¿ buttons. The indica-
tor lamps in the Ãand¿ buttons
come on.
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 out-
side odours or when in a tunnel. Other- 118 Air conditioningControls
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3-zone Thermotronic*
Function
Front control unit
:
Sets the temperature, left
;
Sets the air-conditioning system to
automatic
=
Switches the air conditioning on/
off
?
Switches the mono function on/off
A
Switches cooling with air dehumid-
ification on/off
B
Switches the residual heat function
on/off
C
Demists the windscreen
D
Sets the temperature, right
E
Switches the rear window heating
on/off
F
Sets the air distribution, right
G
Increases the airflow Function
H
Reduces the airflow
I
Display
J
Sets the air distribution, left
K
Activates/deactivates air-recircu-
lation mode
Rear control panel
L
Increases the temperature
M
Display
N
Increases the airflow
O
Reduces the airflow
P
Reduces the temperature
i
Instructions and recommendations for
optimum air conditioning:
R activate the air conditioning using
the à and¿ buttons. The indica- 120 Air conditioningControls
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tor lamps in the
Ãand¿ buttons
come on.
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 out-
side odours or when in a tunnel. Other-
wise, the windows could mist up due to
a lack of fresh air.
R use the "MONO" function if you want to
adopt the temperature and air distribu-
tion settings from the driver's side for all
air-conditioning zones. The indicator
lamp in the ºbutton comes on.
R use the "residual heat" function if you
want to heat or ventilate the vehicle inte-
rior when the ignition is switched off. The
"residual heat" function can only be acti-
vated or deactivated with the ignition
switched off. Switching the air conditioning on/off
i When the air conditioning is switched off,
the air supply and air circulation are also
switched off. Only select this setting briefly,
otherwise the windows may mist up.
i Activate the air conditioning primarily
using the Ãbutton ( Ypage 122). X
Turn the key to position 2in the ignition
lock.
X To activate: 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 previously selected settings come
into effect again.
X To switch off: press the^button.
The indicator lamp in the ^button lights
up. Switching cooling with air dehumidi-
fication on/off
The "cooling with air dehumidification" func-
tion is only available when the engine is run-
ning. The air inside the vehicle is cooled and
dehumidified according to the temperature
selected. This prevents the windows from
misting up. G
Risk of accident
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.
Condensation may drip from the underside of
the vehicle when Thermatic is in cooling
mode.
X To activate: press the¿button.
The indicator lamp in the ¿button
comes on.
X To switch off: press the¿button.
The indicator lamp in the ¿button goes
out. The cooling with air dehumidification
function has a delayed switch-off feature. Air conditioning
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Controlling the air conditioning auto-
matically
In automatic mode, the set temperature is
maintained automatically at a constant level.
The system automatically regulates the tem-
perature of the dispensed air, the airflow and
the air distribution.
The automatic air conditioning will achieve
optimal operation if "cooling with air dehu-
midification" is also activated. If necessary,
cooling with air dehumidification can be deac-
tivated.
X Turn the key to position 2in the ignition
lock.
X Set the desired temperature.
X To activate: press theÃbutton.
The indicator lamp in the Ãbutton lights
up. Automatic air distribution and airflow
are activated.
X To switch off: press theÃbutton.
The indicator lamp in the Ãbutton goes
out. Automatic air distribution and airflow
are deactivated. Setting the temperature
2-zone Thermatic Different temperatures can be set for the
driver's and front-passenger sides.
X Turn the key to position 2in the ignition
lock.
X To increase/reduce: turn thumb-
wheels :and Dclockwise or anti-clock-
wise ( Ypage 118). Only change the tem-
perature setting in small increments. Start
at 22 †. 3-zone Thermotronic* Air-conditioning zones for 3-zone Thermotronic*
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 front tempera-
ture: turn thumbwheels :and Dclock-
wise or anti-clockwise (Y page 120). Only
change the temperature setting in small
increments. Start at 22 †.
X To increase/reduce temperature in the
rear compartment: press button9
or : . Only change the temperature set-
ting in small increments. Start at 22 †. Adjusting the air vents
G
Risk of injury
Very hot or very cold air can flow from the air
vents. This could cause burns or frostbite to
bare skin in the immediate vicinity of the
vents. Keep bare skin away from these air
outlets. If necessary, direct the airflow away
to a different area of the vehicle interior. 122 Air conditioningControls
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In order to ensure the direct flow of fresh air
through the air vents into the vehicle interior,
please observe the following notes:
R
keep the air inlet between the windscreen
and the bonnet free of blockages, such as
ice, snow or leaves.
R never cover the vents or air inlet and outlet
grilles in the vehicle interior.
i For draught-free ventilation, adjust the
sliders of the air vents to the centre detent
position.
Setting the centre air vents :
Centre air vent, left
; Centre air vent, right
= Thumbwheel for centre air vent, right
? Thumbwheel for centre air vent, left
X To open/close: turn thumbwheels =
and ?up or down.
Setting the side air vents X
To open/close: turn thumbwheel =up or
down.
i Demister vent :is never completely
shut, even if side air vent ;is shut.
Setting the glove compartment air vent The glove compartment can be ventilated
when 2-zone Thermatic/3-zone
Thermotronic* is activated, e. g. for cooling
its contents. The level of airflow depends on
the airflow and air distribution settings.
!
Close the glove compartment air vent
when heating mode is activated. At high
outside temperatures, open the air vent
and activate the "cooling with air dehumid-
ification" function. Otherwise, tempera-
ture-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. Air conditioning
123Controls
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Setting the rear-compartment air vents
:
Thumbwheel for rear-compartment air
vents
; Rear-compartment air vent, right
= Rear control panel for 3-zone
Thermotronic*
? Rear-compartment air vent, left
X To open/close: turn thumbwheel :up or
down. Setting the air distribution
3-zone Thermotronic*: you can set the air
distribution 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 footwell
air vents
S directs the airflow through the centre
and side air vents as well as the foot-
well air vents
_ 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
a directs the airflow through the footwell
and demister vents 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. The automatic control is deactivated
and the air distribution is controlled
according to the selected setting. Setting the airflow
X Turn the key to position 2in the ignition
lock.
X To increase/reduce: press theKor
I button. Switching the Mono function on/off
You can use the mono function to adopt the
temperature and air distribution settings on
the driver's side for the front-passenger side.
X Press button º.
The indicator lamp in the ºbutton lights
up or goes out. Demisting the windscreen
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 button ¬lights up.
The system automatically switches to the
following functions:
R cooling with air dehumidification on
R high airflow 25
R high temperature 25
25 Depending on the outside temperature. 124 Air conditioningControls
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R
air distribution to the windscreen 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 dehu-
midification function remains on. Air-recir-
culation mode remains deactivated.
or
X Press button Ã.
The indicator lamp in the ¬button goes
out. Airflow and air distribution are set to
automatic mode.
or
X Turn thumbwheels :orD clockwise or
anti-clockwise (Y page 118),(Ypage 120).
or
X Press the KorI button. Demisting the windows
Windows misted up on the inside X
Activate the "cooling function with air dehu-
midification" function.
X Activate the automatic mode.
X If the windows continue to mist up, activate
the "demisting" function.
Windows misted up on the outside X
Activate the windscreen wipers.
X Press the _button repeatedly until the
O orP symbol appears in the dis-
play.
i You should only select this setting until
the windscreen is clear again. Switching the rear window heating
on/off
G
Risk of accident
Clear all windows of ice or snow before setting
off. Otherwise, impaired visibility could
endanger you and others.
i The rear window heating has a high cur-
rent draw. You should therefore switch it
off as soon as the window is clear, as it only
switches off automatically after several
minutes.
i If the battery voltage is too low, the rear
window heating may switch off.
X Turn the key to position 2in the ignition
lock.
X Press the ¯button.
The indicator lamp in the ¯button lights
up or goes out. Activating/deactivating air-recircula-
tion mode
You can deactivate the flow of fresh air if
unpleasant odours are entering the vehicle
from outside. The air already inside the vehi-
cle will then be recirculated. G
Risk of accident
Only switch over to air-recirculation mode
briefly at low outside temperatures. Other-
wise, the windows could mist up, thus impair-
ing visibility and endangering yourself and
others. This may prevent you from observing
the traffic conditions, thereby causing an
accident.
X Turn the key to position 2in the ignition
lock.
X To activate: press the,button.
The indicator lamp in the ,button
comes on. Air conditioning
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i
The difference in quantity between the
minimum mark and maximum mark is
approximately 2 litres.
! Do not add too much oil. If too much oil
is added and the oil level is above the max-
imum mark on the dipstick, the engine or
catalytic converter could be damaged.
Have excess oil siphoned off.
X Replace cap :on the filler neck and
tighten clockwise.
Ensure that the cap locks into place
securely.
For further information on engine oil, see
(Y page 246). Coolant
Only check the coolant level when the vehicle
is on a level surface and the engine has cooled
down.
X Turn the key to position 2(Y page 61) in
the ignition lock.
X Check the coolant temperature gauge in
the multi-function display. G
Risk of injury
The cooling system is pressurised. Therefore,
only unscrew the cap once the engine has
cooled down. The coolant temperature gauge
must display less than 70 †. Otherwise, you
could be scalded by escaping hot coolant. The coolant expansion tank is located in the
engine compartment on the right when
viewed in the direction of travel. X
Slowly turn cap :half a turn anti-clock-
wise to allow excess pressure to escape.
X Turn cap :further anti-clockwise and
remove it.
There is sufficient coolant in expansion
tank ;if the coolant is level with marker
bar =in the filler neck when cold or
approximately 1.5 cm higher when hot.
X Top up the coolant if necessary.
X Replace cap :and tighten all the way to
the stop.
For further information on coolant, see
(Y page 247). Windscreen washer system/head-
lamp cleaning system*
The washer fluid reservoir for the windscreen
washer system and headlamp cleaning sys-
tem* is located in the engine compartment Engine compartment
149Operation
* optional
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