2013 MERCEDES-BENZ SL-CLASS ROADSTER climate 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 31).Overview of climate control systems
Important safety notes
G
WARNING
Observe the settings recommended on the
following pages. The windows could
otherwise fog

up. This could prevent you from
observing the traffic conditions, thereby
causing an accident. G
WARNING
Severe conditions (e.g. strong air pollution)
may require replacement of the filter before
its scheduled

replacement interval. A clogged
filter will reduce the air volume to the interior
and the windows could fog up, impairing
visibility and endangering you and others.
Have a clogged filter replaced as soon as
possible at a qualified specialist workshop.
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 when the side windows and the roof
are closed.
The residual heat function can only be
activated or deactivated with the ignition
switched off (Y page 130). i
Ventilate the vehicle for a brief period
during warm

weather. This will speed up the
cooling process and the desired vehicle
interior temperature will be reached more
quickly.
i It is possible that the residual heat
function may be activated automatically an
hour after the SmartKey is removed. The
vehicle is then ventilated for 30minutes to
dry the air-conditioning system. 122
Overview of climate control systems
Climate control

Control panel for 2-zone automatic climate control
Canada only
:
Sets the temperature, left ( Y page 127)
; Sets climate control to automatic (Y page 126)
= Defrosts the windshield ( Y page 128)
? Activates/deactivates the residual heat function (Y page 130)
A Activates/deactivates cooling with air dehumidification ( Y page 125)
B Switches the rear window defroster on/off ( Y page 129)
C Switches the ZONE function on/off ( Y page 128)
D Sets the temperature, right ( Y page 127)
E Switches climate control on/off ( Y page 125)
F Sets the air distribution (Y page 127)
G Sets the airflow ( Y page 127)
H Sets the climate mode (Y page 126)
I Activates/deactivates air-recirculation mode (Y page 130) Overview of climate control systems
123
Climate control Z

USA only
:
Sets the temperature, left ( Y page 127)
; Sets climate control to automatic (Y page 126)
= Defrosts the windshield ( Y page 128)
? Switches the maximum cooling MAX COOL on/off (Y page 128)
A Activates/deactivates cooling with air dehumidification ( Y page 125)
B Switches the rear window defroster on/off ( Y page 129)
C Switches the ZONE function on/off ( Y page 128)
D Sets the temperature, right ( Y page 127)
E Switches climate control on/off ( Y page 125)
F Sets the air distribution (Y page 127)
G Sets the airflow ( Y page 127)
H Sets the climate mode (Y page 126)
I Activates/deactivates air-recirculation mode (Y page 130) Information regarding the use of
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 à and
¿ 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 72 ‡ (22 †
).
R Only use the "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 as in air-recirculation
mode no fresh air is drawn into the vehicle.
R Use the ZONE function to adopt the
temperature settings on the driver's side124
Overview of climate control systems
Climate control

for the front-passenger side 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
"residual heat" function can only be
activated or deactivated with the ignition
switched off. Operating the climate control
systems
Activating/deactivating climate
control
General notes G
WARNING
When the climate control system is switched
off, the outside air supply and circulation are
also switched

off. Only choose this setting for
a short time when the retractable hardtop
(vario-roof) is closed. Otherwise, the windows
could fog up, impairing visibility and
endangering you and others.
i Switch on climate control primarily using
the à button ( Y page 126).
Activating/deactivating X
Turn the SmartKey to position 2 in the
ignition lock.
X To switch on: press button Ã.
The indicator

lamp in the à button 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. Activating/deactivating cooling with
air dehumidification
General notes G
WARNING
If you switch off the cooling function, the
vehicle will not be cooled when weather
conditions are

warm. The windows can fog up
more quickly. This may prevent you from
observing the traffic conditions, thereby
causing an accident.
The cooling with air dehumidification function
is only available when the engine is running.
The air inside the vehicle is cooled 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.
i The cooling with air dehumidification
function uses refrigerant R1234yF. This
coolant does not contain
chlorofluorocarbons, and therefore does
not damage the ozone layer.
Activating/deactivating Example: ¿ buttonOperating the climate control systems
125
Climate control Z

X
To activate: press the ¿ button.
The indicator
lamp in the ¿ button lights
up.
X To deactivate: press the ¿ button.
The indicator

lamp in the ¿ button goes
out. The cooling with air dehumidification
function has a delayed switch-off feature.
Problems with the cooling with air
dehumidification function When you press the
¿ button, the
indicator lamp in the button flashes three
times or

remains off. You can no longer switch
on the cooling with air dehumidification
function.
X Visit a qualified specialist workshop. Setting climate control to automatic
G
WARNING
If you switch off the cooling function, the
vehicle will not be cooled when weather
conditions are

warm. The windows can fog up
more quickly. Window fogging may impair
visibility and endanger you and others. In automatic mode, the set temperature is
maintained
automatically

at a constant level.
The system automatically regulates the
temperature of the dispensed air, the airflow
and the air distribution.
Automatic mode will achieve optimal
operation if cooling with air dehumidification is also activated. If desired, cooling with air
dehumidification can be deactivated.
X
Turn the SmartKey to position 2 in the
ignition lock.
X Set the desired temperature.
X To activate: press the à button.
The indicator

lamp in the à button lights
up. Automatic air distribution and airflow
are activated.
i Dual-zone automatic climate control:
when automatic

mode is activated, you can
select a climate mode ( Y page 126).
X To switch off: press the _ button.
or
X Press the I or K button.
The indicator

lamp in the à button goes
out. Adjusting the climate mode settings
(AIR FLOW)
You can select the following climate mode
settings in automatic mode:
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
The climate mode settings are especially
effective at high outside temperatures. Example: ñ button126
Operating the climate control systems
Climate control

X
Turn the SmartKey to position 2 in the
ignition lock.
X Press the à button.
X Press the ñ button repeatedly until the
desired climate mode appears in the
display. Setting the temperature
Different temperatures can be set for the
driver's and front-passenger sides.
X
Turn the SmartKey to position 2 in the
ignition lock.
X Turn controls : or D clockwise or
counter-clockwise.
Only change the temperature setting in
small increments. Start at 72 ‡ (22 †
).Setting the air distribution X
Turn the SmartKey to position 2 in the
ignition lock.
X Press the _ button repeatedly until the
desired symbol appears in the display.
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 air through the defroster,
center and side air vents 1
a Directs air through the defroster and
footwell vents
_ Directs air through the defroster,
center and

side air vents as well as the
footwell air vents 1
.
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. Setting the airflow
X
Turn the SmartKey to position 2 in the
ignition lock.
X To increase: press the K button.
X To reduce: press the I button.
1 Canada only. Operating the climate control systems
127
Climate control Z

Switching the ZONE function on/off
X
To switch on: press the á button.
The indicator

lamp in the á button lights
up. The temperature setting for the driver's
side is not adopted for the front-passenger
side.
X To switch off: press the á button.
The indicator

lamp in the á button goes
out. The temperature setting for the
driver's side is adopted for the front-
passenger side. Defrosting the windshield
Example:
¬ button
You can use this function to defrost the
windshield or to demist the inside of the
windshield and the side windows.
Switch off

the defrosting function as soon as
the windshield is clear again. X
Turn the SmartKey to position 2 in 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 cooling with air dehumidification on
R high airflow (depending on the outside
temperature)
R high temperature (depending on the
outside 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 come
into effect again. The cooling with air
dehumidification function remains on. Air-
recirculation mode remains deactivated.
or
X Press the à button.
The indicator

lamp in the ¬ button goes
out. Airflow and air distribution are set to
automatic mode.
or
X Turn temperature control : or D
clockwise or counter-clockwise.
or
X Press the K or I button. MAX COOL maximum cooling
The MAX COOL function is only available in
vehicles for the USA. 128
Operating the climate control systems
Climate control

MAX COOL is only operational when the
engine is running.
X
To activate: press the Ù button.
The indicator lamp in the button lights up.
X To deactivate: press the Ù button
again.
The indicator
lamp goes out. The previously
selected settings come into effect again.
When you activate MAX COOL, climate
control 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 ¿ cooling with air
dehumidification function.
X Activate automatic mode Ã.
X If the windows continue to fog up, activate
the defrosting function (Y

page 128).
i You should only select this setting until
the windshield is clear again.
Windows fogged up on the outside X
Activate the windshield wipers.
X Press the _ button repeatedly until the
P or O symbol appears in the
display.
i You should only select this setting until
the windshield is clear again. Rear window defroster
Activating/deactivating G
WARNING
Clear all windows of ice or snow before setting
off. Otherwise, impaired visibility could
endanger you and others. The rear window defroster has a high current
draw. You should therefore switch it off as
soon as the window is clear. It otherwise
switches off automatically after several
minutes.
If the battery voltage is too low, the rear
window defroster may switch off.
X
Turn the SmartKey to position 2 in the
ignition lock.
X Press the ¤ button.
The indicator

lamp in the ¤ button lights
up or goes out.
Problems with the rear window
defroster The rear window defroster has deactivated
prematurely or cannot be activated.
X
Switch off any consumers that are not
required, e.g. reading lamps or interior
lighting.
When the battery is sufficiently charged,
the rear window defroster is activated
again automatically. Operating the climate control systems
129
Climate control Z