2014 MERCEDES-BENZ GLK-Class Owner's Manual

Useful information
............................128
Overview of climate control sys-
tems ................................................... 128
Operating the climate control sys-
tems ................................................... 133
Setting the air vents .........................140 127Climate control

Useful information
i This Operator's Manual describes all
models and all standard and optional
equipment 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
specialist workshops: (Y page 27).Overview of climate control systems
Important safety notes
Observe the settings recommended on the
following pages. The windows could
otherwise 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
dehumidification 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
activated or deactivated with the ignition
switched off (Y page 139).
i Ventilate the vehicle for a brief period
during warm weather, e.g. using the
convenience 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 filters out most
particles of dust and soot and completely
filters out pollen. It also reduces gaseous
pollutants and odors. 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
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. 128
Overview of climate control systemsClimate control

Control panel for dual-zone automatic climate control
Canada only
0043
To set the temperature, left (Y page 136)
0044 To defrost the windshield (Y page 137)
0087 To switch the ZONE function on/off (Y page 137)
0085 To switch cooling with air dehumidification on/off (Y page 133)
0083 To switch the rear window defroster on/off (Y page 138)
0084 To set the temperature, right (Y page 136)
006B To activate/deactivate air-recirculation mode (Y page 139)
006C To set the air distribution (Y page 136)
006D To increase the airflow (Y page 137)
006E To reduce the airflow (Y page 137)
006F To switch climate control on/off (Y page 133)
0070 To set climate control to automatic (Y page 135) Overview of climate control systems
129Climate control

USA only
0043
To set the temperature, left (Y page 136)
0044 To defrost the windshield (Y page 137)
0087 To switch maximum cooling on/off (Y page 138)
0085 To switch cooling with air dehumidification on/off (Y page 133)
0083 To switch the rear window defroster on/off (Y page 138)
0084 To set the temperature, right (Y page 136)
006B To activate/deactivate air-recirculation mode (Y page 139)
006C To set the air distribution (Y page 136)
006D To increase the airflow (Y page 137)
006E To reduce the airflow (Y page 137)
006F To switch climate control on/off (Y page 133)
0070 To set climate control to automatic (Y page 135)Notes on using climate control
Automatic climate control The following contains notes and
recommendations on optimum use of dual-
zone automatic 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"
function 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
otherwise fog up, since no fresh air is drawn
into the vehicle in air-recirculation mode.
R Use the ZONE function to adopt the
temperature settings on the driver's side
for the front-passenger side as well. The
indicator lamp in the 00D6button goes out.
ECO start/stop function During automatic engine switch-off, the ECO
start/stop function only operates at a
reduced capacity. If you require the full130
Overview of climate control systemsClimate control

climate control output, you can switch off the
ECO start/stop function by pressing the ECO
button (Y page 150). Overview of climate control systems
131Climate control

Control panel for 3-zone automatic climate control
Canada only
Front control panel
0043 To set the temperature, left (Y page 136)
0044 To defrost the windshield (Y page 137)
0087 To switch the residual heat function on/off (Y page 139)
0085 To switch cooling with air dehumidification on/off (Y page 133)
0083 To switch the rear window defroster on/off (Y page 138)
0084 To set the temperature, right (Y page 136)
006B To switch the ZONE function on/off (Y page 137)
006C To switch climate control on/off (Y page 133)
006D To set the air distribution (Y page 136)
006E To increase the airflow (Y page 137)
006F To reduce the airflow (Y page 137)
0070 To adjust airflow (Y page 135)
0071 To activate/deactivate air-recirculation mode (Y page 139)
0072 To set climate control to automatic (Y page 135)
Rear control panel
0073 To increase the airflow (Y page 137)
0074 To reduce the airflow (Y page 137)
0075 Display
0076 To reduce the temperature (Y page 136)
0077 To increase the temperature (Y page 136)132
Overview of climate control systemsClimate control

Notes on using 3-zone automatic
climate control
Automatic climate control The following contains instructions and
recommendations to enable you to get the
most out of your 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 adjust airflow (FOCUS/
MEDIUM/DIFFUSE). The MEDIUM level is
recommended.
R Set the temperature to 72 ‡ (22 †).
R Only use the "windshield defrosting"
function 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
otherwise fog up, since no fresh air is drawn
into the vehicle in air-recirculation mode.
R Use the ZONE function to adopt the
temperature settings on the driver's side
for the front-passenger side and the rear
compartment 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 deactivated with the ignition switched
off.
ECO start/stop function During automatic engine switch-off, the ECO
start/stop function only operates at a
reduced capacity. If you require the full
climate control output, you can switch off the
ECO start/stop function by pressing the ECO
button ( Ypage 150). Operating the climate control
systems
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 ( Ypage 135).
Activating/deactivating X
Turn the SmartKey to position 2in the
ignition lock ( Ypage 145).
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-
dehumidification" function, the air inside the
vehicle will not be cooled. The air inside the
vehicle will also not be dehumidified. The
windows can fog up more quickly. Therefore,
deactivate the cooling with air-
dehumidification function only briefly.
The "Cooling with air dehumidification"
function is only available when the engine is
running. The air inside the vehicle is cooled Operating the climate control systems
133Climate control

and 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
malfunction.
Activating/deactivating X
To activate: press the005Abutton.
The indicator lamp in the 005Abutton lights
up.
i When the "Cooling with air
dehumidification" function is activated,
one of the indicator lamps on the auxiliary
heating button will light up on vehicles with
auxiliary heating.
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. 134
Operating the climate control systemsClimate control