2015 MERCEDES-BENZ GLK-Class climate control

Useful information
i This Operator's Manual describes all
models and all standard and optional equip- ment of your vehicle available at the time of
publication of the Operator's Manual.
Country-specific differences are possible.
Please note that your vehicle may not be
equipped with all features described. This
also applies to safety-related systems and
functions.
i Read the information on qualified special-
ist workshops (Y page 27). Overview of climate control systems
Important safety notes
Observe the settings recommended on the
following pages. The windows could other-
wise fog up.
To prevent the windows from fogging up:
R switch off climate control only briefly
R switch on air-recirculation mode only
briefly
R switch on the cooling with air dehumidifi-
cation function
R switch on the defrost windshield function
briefly, if required
Climate control regulates the temperature
and the humidity in the vehicle interior and
filters undesirable substances out of the air.
Climate control can only be operated when
the engine is running. Optimum operation is
only achieved with the side windows and roof
closed.
The residual heat function can only be acti-
vated or deactivated with the ignition
switched off (Y page 143).
i Ventilate the vehicle for a brief period
during warm weather, e.g. using the con-
venience opening feature (Y page 92). This
will speed up the cooling process and the
desired interior temperature will be
reached more quickly. i
The integrated filter filters out most par-
ticles of dust and soot and completely fil-
ters out pollen. It also reduces gaseous pol-
lutants and odors. A clogged filter reduces the amount of air supplied to the vehicle
interior. For this reason, you should alwaysobserve the interval for replacing the filter,which is specified in the Maintenance
Booklet. As it depends on environmental
conditions, e.g. heavy air pollution, the
interval may be shorter than stated in the
Maintenance Booklet.
i It is possible that the dehumidification
function of the climate control system may
be activated automatically an hour after the
SmartKey has been removed. The vehicle is then ventilated for 30 minutes. 132
Overview of climate control systemsClimate control

Control panel for dual-zone automatic climate control
Canada only
0043
Sets the temperature, left (Y page 140)
0044 Defrosts the windshield (Y page 141)
0087 Switches the ZONE function on/off (Y page 141)
0085 Switches cooling with air dehumidification on/off (Y page 137)
0083 Switches the rear window defroster on/off (Y page 142)
0084 Sets the temperature, right (Y page 140)
006B Activates/deactivates air-recirculation mode (Y page 143)
006C Sets the air distribution (Y page 140)
006D Increases the airflow (Y page 141)
006E Reduces the airflow (Y page 141)
006F Switches climate control on/off (Y page 137)
0070 Sets climate control to automatic (Y page 139) Overview of climate control systems
133Climate control

USA only
0043
Sets the temperature, left (Y page 140)
0044 Defrosts the windshield (Y page 141)
0087 Switches maximum cooling on/off (Y page 142)
0085 Switches cooling with air dehumidification on/off (Y page 137)
0083 Switches the rear window defroster on/off (Y page 142)
0084 Sets the temperature, right (Y page 140)
006B Activates/deactivates air-recirculation mode (Y page 143)
006C Sets the air distribution (Y page 140)
006D Increases the airflow (Y page 141)
006E Reduces the airflow (Y page 141)
006F Switches climate control on/off (Y page 137)
0070 Sets climate control to automatic (Y page 139)Optimum use of dual-zone climate
control
Climate control system The following contains notes and recommen-
dations on optimum use of dual-zone climate control.
R Activate climate control using the 0058and
005A buttons. The indicator lamps in the
0058 and005A buttons light up.
R Set the temperature to 72 ‡ (22 †).
R Only use the "Windshield defrosting" func-
tion briefly until the windshield is clear
again. R
Only use air-recirculation mode briefly, e.g.
if there are unpleasant outside odors or
when in a tunnel. The windows could oth-
erwise fog up, since 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 00D6button goes out.
ECO start/stop function During automatic engine switch-off, the cli-
mate control system only operates at a
reduced capacity. If you require the full cli-
mate control output, you can switch off the134
Overview of climate control systemsClimate control

ECO start/stop function by pressing the ECO
button (Y page 153). Overvie
w of climate cont rol systems
135Climate control

Control panel for 3-zone automatic climate control
Canada only
Front control panel
0043 Sets the temperature, left (Y page 140)
0044 Defrosts the windshield (Y page 141)
0087 Switches the residual heat function on/off (Y page 143)
0085 Switches cooling with air dehumidification on/off (Y page 137)
0083 Switches the rear window defroster on/off (Y page 142)
0084 Sets the temperature, right (Y page 140)
006B Switches the ZONE function on/off (Y page 141)
006C Switches climate control on/off (Y page 137)
006D Sets the air distribution (Y page 140)
006E Increases the airflow (Y page 141)
006F Reduces the airflow (Y page 141)
0070 Adjusts the climate mode settings (Y page 139)
0071 Activates/deactivates air-recirculation mode (Y page 143)
0072 Sets climate control to automatic (Y page 139)
Rear control panel
0073 Increases the airflow (Y page 141)
0074 Reduces the airflow (Y page 141)
0075 Display
0076 Reduces the temperature (Y page 140)
0077 Increases the temperature (Y page 140)136
Overview of climate control systemsClimate control

Optimum use of 3-zone automatic cli-
mate control
Climate control system The following contains instructions and rec-
ommendations to enable you to get the most
out of your 3-zone automatic climate control.
R Activate climate control using the 0058and
005A buttons. The indicator lamps in the
0058 and005A buttons light up.
R In automatic mode, you can also use the
00F0 button to set the climate mode
(FOCUS/MEDIUM/DIFFUSE). The
MEDIUM level is recommended.
R Set the temperature to 72 ‡ (22 †).
R Only use the "Windshield defrosting" func-
tion briefly until the windshield is clear
again.
R Only use air-recirculation mode briefly, e.g.
if there are unpleasant outside odors or
when in a tunnel. The windows could oth-
erwise fog up, since 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
00D6 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 residual
heat function can only be activated or deac- tivated with the ignition switched off.
ECO start/stop function During automatic engine switch-off, the cli-
mate control system only operates at a
reduced capacity. If you require the full cli-
mate control output, you can switch off the
ECO start/stop function by pressing the ECO
button (Y page 153). Operating the climate control sys-
tems
Switching climate control on/off
General notes When the climate control is switched off, the
air supply and air circulation are also
switched off. The windows could fog up.
Therefore, switch off climate control only
briefly
i Switch on climate control primarily using
the 0058 button (Y page 139).
Activating/deactivating X
Turn the SmartKey to position 2in the igni-
tion lock (Y page 149).
X To activate: press the0058button.
The indicator lamp in the 0058button lights
up. Airflow and air distribution are set to
automatic mode.
or
X Press the 0078button.
The indicator lamp in the 0078button goes
out. The previously selected settings are
restored.
X To deactivate: press the0078button.
The indicator lamp in the 0078button lights
up. Activating/deactivating cooling with
air dehumidification
General notes If you deactivate the "Cooling with air-dehu-
midification" function, the air inside the vehi-
cle will not be cooled. The air inside the vehi-
cle will also not be dehumidified. The win-
dows can fog up more quickly. Therefore,
deactivate the cooling with air-dehumidifica-
tion function only briefly.
The "Cooling with air dehumidification" func-
tion is only available when the engine is run-
ning. The air inside the vehicle is cooled and Operating the climate control systems
137Climate control

dehumidified according to the temperature
selected.
Condensation may drip from the underside of the vehicle when it is in cooling mode. This is
normal and not a sign that there is a malfunc- tion.
Switching on/off X
To activate: press the005Abutton.
The indicator lamp in the 005Abutton lights
up.
X To deactivate: press the005Abutton.
The indicator lamp in the 005Abutton goes
out. The "Cooling with air dehumidification" function has a delayed switch-off feature. 138
Operating the climate control systemsClimate control

Problems with the "Cooling with air dehumidification" function
Problem
Possible causes/consequences and
0050
0050Solutions The indicator lamp in
the
005A button
flashes three times or
remains off. The "Cool-
ing with air dehumidifi-
cation" function cannot
be switched on. Cooling with air dehumidification has been deactivated due to a
malfunction.
X Visit a qualified specialist workshop. Setting climate control to automatic
General notes 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 mode functions optimally
when the "Cooling with air dehumidification"
function is activated. If necessary, cooling
with air dehumidification can be deactivated.
If you deactivate the "Cooling with air-dehu-
midification" function, the air inside the vehi-
cle will not be cooled. The air inside the vehi- cle will also not be dehumidified. The win-
dows can fog up more quickly. Therefore,
deactivate the cooling with air-dehumidifica-
tion function only briefly.
Activating/switching X
Turn the SmartKey to position 2in the igni-
tion lock (Y page 149).
X Set the desired temperature.
X To activate: press the0058button.
The indicator lamp in the 0058button lights
up. Automatic air distribution and airflow
are activated.
3-zone automatic climate control: when auto- matic mode is activated, you can set the cli-
mate mode (Y page 139). X
To select manually: press the008Fbut-
ton.
or
X Press the 0097or0095 button.
The indicator lamp in the 0058button goes
out. Automatic air distribution and airflow
are deactivated. Adjusting the climate mode settings
This function is only available with 3-zone
automatic climate control.
In automatic mode you can select the follow-
ing climate settings:
FOCUS high airflow that is set slightly cooler
MEDIUM medium airflow, standard setting
DIFFUSE low airflow that is set slightly warmer and with less draft
X Turn the SmartKey to position 2in the igni-
tion lock (Y page 149).
X Press the 0058button.
X Press the 00F0button repeatedly until the
required climate setting appears in the dis-
play. Operating the climate control systems
139Climate control