2015 MERCEDES-BENZ SLK-CLASS ROADSTER climate settings

Useful information
iThis 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.
iRead the information on qualified special-
ist workshops ( Ypage 25).
Overview of climate control systems
General 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 ( Ypage 133).
iWhen the weather is warm, ventilate the
vehicle for a brief period. This will speed up the cooling process and the desired vehicle
interior temperature will be reached morequickly.
iThe 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.
122Overview of climate control systems
Climate control

=Sets the air distribution (Ypage 130)
?Defrosts the windshield ( Ypage 131)
ASwitches cooling with air dehumidification on/off ( Ypage 127)
BActivates/deactivates air-recirculation mode ( Ypage 133)
CSets the airflow ( Ypage 130)
DSwitches the rear window defroster on/off ( Ypage 132)
Notes on using the air-conditioning
system
Air-conditioning system
Below, you can find a number of notes and
recommendations to help you use the air-
conditioning system optimally.
R Switch on cooling with air dehumidification
using the ¿button. The indicator lamp
in the ¿button lights up.
R Set the temperature to 72 ‡ (22 †).
R Recommendation for air distribution in
winter: set theOand¯ settings.
Recommendation for air distribution in
summer: set thePsetting.
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.
ECO start/stop function
During automatic engine switch-off, the cli-
mate control system only operates at a
reduced capacity. If you require full climate
control capacity, the ECO start/stop function can be deactivated by pressing the ECO but-
ton ( Ypage 147).
124Overview of climate control systems
Climate control

USA only :
Sets the temperature, left (Ypage 129)
;Defrosts the windshield ( Ypage 131)
=Switches maximum cooling on/off ( Ypage 131)
?Switches cooling with air dehumidification on/off ( Ypage 127)
ASwitches the rear window defroster on/off ( Ypage 132)
BSets the temperature, right ( Ypage 129)
CActivates/deactivates air-recirculation mode ( Ypage 133)
DSets the air distribution ( Ypage 130)
EIncreases the airflow ( Ypage 130)
FReduces the airflow ( Ypage 130)
GSwitches climate control on/off ( Ypage 127)
HSets climate control to automatic ( Ypage 129)
Optimum use of dual-zone climate control
Automatic climate control
The following contains instructions and rec-
ommendations to enable you to get the most
out of your automatic climate control.
R Activate climate control using the Ãand
¿ buttons or the Ábutton on the
control panel of the climate control. The
indicator lamps in the Ãand¿ but-
tons or the Ábutton 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 ábutton 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
126Overview of climate control systems
Climate control

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 only operates at a reduced capa-city. If you require full climate control capa-
city, the ECO start/stop function can be
deactivated by pressing the ECO button( Y page 147).
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 onlybriefly
iActivate climate control primarily using
the à button ( Ypage 129).
Air-conditioning system
X
Turn the SmartKey to position 2in the igni-
tion lock ( Ypage 139).
X To switch on: turn airflow control C
clockwise to the desired position (except position 0) ( Y page 123).
X To switch off: turn airflow control C
counter-clockwise to position 0
( Y page 123).
Dual-zone automatic climate control
X
Turn the SmartKey to position 2in the igni-
tion lock ( Ypage 139).
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 previously selected settings arerestored.
X To switch off: press the^button.
The indicator lamp in the ^button 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
dehumidified according to the temperatureselected.
Condensation may drip from the underside of the vehicle when it is in cooling mode. This isnormal and not a sign that there is a malfunc-
tion.
Operating the climate control systems127
Climate control

Only change the temperature setting in
small increments. Start at 72 ‡ (22 †).
iIf you turn controls:and Bcounter-
clockwise to the lowest temperature set-
ting, air-recirculation mode may activate
automatically, depending on the outsidetemperature.
Setting the air distribution
Air-conditioning system
X Turn the SmartKey to position 2in the igni-
tion lock ( Ypage 139).
X Press one or more of the P,O ,¯
buttons.
The corresponding indicator lamp lights up
briefly.
The following air distribution settings can beselected: ¯ Directs air through the defroster vents
O Directs air through the footwell air vents
P Directs air through the center and side
air vents
iYou can also activate several air distribu-
tion settings simultaneously. To do this,
press multiple air distribution buttons. The air is then directed through various vents.
Dual-zone automatic climate control
X Turn the SmartKey to position 2in the igni-
tion lock ( Ypage 139).
X Press the _button repeatedly until the
desired symbol appears in the display.
The following air distribution settings can be selected: P Directs air through the center and side
air vents
O Directs air through the footwell air vents S
Directs air through the center, side and
footwell vents
¯ Directs air through the defroster vents
b Directs the airflow through the
defroster, center and side air vents 1
a Directs air through the defroster and
footwell vents
_ Directs the airflow through the
defroster vents, the center and side air
vents as well as the footwell air vents 2
iRegardless of the air distribution setting,
airflow is always directed through the side
air vents. You can only close the side air
vents, by fully closing the adjuster on the
side air vents ( Ypage 135).
Setting the airflow
Air-conditioning system
X Turn the SmartKey to position 2in the igni-
tion lock ( Ypage 139).
X To increase/reduce: turn controlC
clockwise or counter-clockwise ( Y page 123).
Dual-zone automatic climate control
X
Turn the SmartKey to position 2in the igni-
tion lock ( Ypage 139).
X To increase/reduce: press theKor
I button.
Switching the ZONE function on/off
This function is only available with dual-zone
automatic climate control on vehicles for
Canada.
X To switch on: press theábutton.
The indicator lamp in the ábutton lights
up. The temperature setting for the driver's
1 Canada only.
2 Canada only.
130Operating the climate control systems
Climate control

side is not adopted for the front-passengerside.
X To switch off: press theábutton.
The indicator lamp in the ábutton goes
out. The temperature setting for the driv-
er's side is adopted for the front-passengerside.
Defrosting the windshield
General notes
You can use this function to defrost the wind-
shield or to defrost the inside of the wind-
shield and the side windows.
Switch off the "Windshield defrosting" func-
tion as soon as the windshield is clear again.
Switching the "Windshield defrosting"
function on/off
X Turn the SmartKey to position 2in the igni-
tion lock ( Ypage 139).
X To switch on: 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 windshield 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 are
restored. Air-recirculation mode remainsdeactivated.
or X Dual-zone automatic climate control: pressthe à button.
The indicator lamp in the ¬button goes
out. Airflow and air distribution are set to
automatic mode.
MAX COOL maximum cooling
The MAX COOL function is only available in
vehicles for the USA.
MAX COOL is only operational when the
engine is running.
X To activate: press theÙbutton.
The indicator lamp in the button lights up.
X To deactivate: press theÙbutton.
The indicator lamp in the button goes out.
The previously selected settings arerestored.
When you activate MAX COOL, climate con-
trol switches to the following functions: R maximum cooling
R maximum airflow
R air-recirculation mode on
Defrosting the windows
Windows fogged up on the inside
X Activate the ¿/Á cooling with air
dehumidification function.
X Dual-zone automatic air conditioning: acti-
vate the Ãmode button.
X If the windows continue to fog up, activate
the ¬ "Windshield defrosting" function.
iYou should only select this setting until
the windshield is clear again.
Windows fogged up on the outside
X Activate the windshield wipers.
X Air-conditioning system: press the Por
O button.
X Dual-zone automatic air conditioning:
press the _button until the Por
O symbol appears in the display.
iYou should only select this setting until
the windshield is clear again.
Operating the climate control systems131
Climate control