MERCEDES-BENZ SL-Class 2014 R131 Owner's Manual

Useful information
............................140
Overview of climate control sys-
tems ................................................... 140
Operating the climate control sys-
tems ................................................... 143
Setting the air vents .........................151 139Climate 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 33).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 150).
i When 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 more
quickly. 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 to dry the
air-conditioning system. 140
Overview of climate control systemsClimate control

Control panel for 2-zone automatic climate control
Canada only
0043
To set the temperature, left (Y page 146)
0044 To set climate control to automatic (Y page 145)
0087 To defrost the windshield (Y page 147)
0085 To switch the residual heat function on/off (Y page 150)
0083 To switch cooling with air dehumidification on/off (Y page 143)
0084 To switch the rear window defroster on/off (Y page 148)
006B To switch the ZONE function on/off (Y page 147)
006C To set the temperature, right (Y page 146)
006D To switch climate control on/off (Y page 143)
006E To set the air distribution (Y page 146)
006F To set the airflow ( Ypage 147)
0070 To adjust the climate mode settings (Y page 145)
0071 To activate/deactivate air-recirculation mode (Y page 150) Overview of climate control systems
141Climate control

USA only
0043
To set the temperature, left (Y page 146)
0044 To set climate control to automatic (Y page 145)
0087 To defrost the windshield (Y page 147)
0085 To switch maximum cooling on/off (Y page 148)
0083 To switch cooling with air dehumidification on/off (Y page 143)
0084 To switch the rear window defroster on/off (Y page 148)
006B To switch the ZONE function on/off (Y page 147)
006C To set the temperature, right (Y page 146)
006D To switch climate control on/off (Y page 143)
006E To set the air distribution (Y page 146)
006F To set the airflow (Y page 147)
0070 To adjust the climate mode settings (Y page 145)
0071 To activate/deactivate air-recirculation mode (Y page 150)Information about 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 on the control panel of the climate control. The indicator lamps in
the
0058 and005A buttons light up.
R In automatic mode, you can also use the
00F0 button on the control panel for the
climate control to set a climate mode
(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. 142
Overview of climate control systemsClimate control

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.
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.
R Vehicles with COMAND: if you change the
settings of the climate control system, the
climate status display appears for three
seconds at the bottom of the screen in the
COMAND display. See also the separate
COMAND operating instructions. You will
see the current settings of the various
climate control functions.
ECO start/stop function During automatic engine switch-off, the ECO
start/stop function 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
button (Y page 160). 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 Activate climate control primarily using
the 0058 button (Y page 145). Activating/deactivating X
Turn the SmartKey to position 2in the
ignition lock (Y page 155).
X To activating: press the0058button on
the control panel for the climate control.
The indicator lamp in the 0058button lights
up. Airflow and air distribution are set to
automatic mode.
or
X Press the 0078button on the control panel
for the climate control.
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
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.Operating the climate control systems
143Climate control

Activating/deactivating
Example:
005Abutton
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. 144
Operating the climate control systemsClimate cont
rol

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
"Cooling with air
dehumidification"
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
temperature 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-
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.
Activating/switching X
Turn the SmartKey to position 2in the
ignition lock (Y page 155).
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.
i You can now select a climate mode when
automatic mode is activated
(Y page 145).
X To switch to manual mode: press the
008F button.
or
X Press the 0095or0097 button.
The indicator lamp in the 0058button goes
out. Adjusting the climate mode settings
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 Operating the climate control systems
145Climate control

00F0
button (example)
X Turn the SmartKey to position 2in the
ignition lock (Y page 155).
X Press the 0058button.
X Press the 00F0button repeatedly until the
desired climate mode appears in the
display. Setting the temperature
Activating/deactivating Different temperatures can be set for the
driver's and front-passenger sides.
X Turn the SmartKey to position 2in the
ignition lock (Y page 155).
X Turn controls 0043or006C clockwise or
counter-clockwise (Y page 141).
Only change the temperature setting in
small increments. Start at 72 ‡ (22 †). Setting the air distribution
Activating/deactivating X
Turn the SmartKey to position 2in the
ignition lock (Y page 155).
X Press the 008Fbutton repeatedly until the
desired symbol appears in the display.
The following air distribution settings can be
selected:
009C Directs air through the center and side
air vents
009B Directs air through the footwell air
vents
009F Directs air through the center, side and
footwell vents
0061 Directs air through the defroster vents
0087 Directs the airflow through the
defroster, center and side air vents
(Canada only)
0086 Directs air through the defroster and
footwell vents
008F Directs the airflow through the
defroster, center and side air vents, as
well as the footwell air vents (Canada
only)
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. 146
Operating the climate control systemsClimate control

Setting the airflow
Activating/deactivating X
Turn the SmartKey to position 2in the
ignition lock (Y page 155).
X To increase: press the0097button.
X To reduce: press the0095button. Switching the ZONE function on/off
X
To switch on: press the00D6button.
The indicator lamp in the 00D6button lights
up. The temperature setting for the driver's
side is not adopted for the front-passenger
side.
X To switch off: press button00D6.
The indicator lamp in the 00D6button goes
out. The temperature setting for the
driver's side is adopted for the front-
passenger side. Defrosting the windshield
Example:
0064button
You can use this function to defrost the
windshield or to defrost the inside of the
windshield and the side windows.
Switch off the "Windshield defrosting"
function as soon as the windshield is clear
again.
X Turn the SmartKey to position 2in the
ignition lock (Y page 155).
X To activate: press the0064button.
The indicator lamp in the 0064button 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 deactivate: press the0064button.
The indicator lamp in the 0064button goes
out. The previously selected settings are
restored. Air-recirculation mode remains
deactivated.
or
X Press the 0058button.
The indicator lamp in the 0064button goes
out. Airflow and air distribution are set to
automatic mode.
or Operating the climate control systems
147Climate control

X
Turn the temperature controls to the left or
to the right on the control panel for the
climate control or clockwise or counter-
clockwise.
Turn temperature controls 0043or006C
clockwise or counter-clockwise
(Y page 141).
or
X Press the 0097or0095 button. 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 the00C9button.
The indicator lamp in the button lights up.
X To activate: press off-road button 00C9
again.
The indicator lamp goes out. The previously
selected settings are restored.
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 005Acooling with air
dehumidification function.
X Activate automatic mode 0058.
X If the windows continue to fog up, activate
the 0064 "Windshield defrosting" function.
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 008Fbutton repeatedly until the
009C or009B symbol appears in the
display.
i You should only select this setting until
the windshield is clear again. Rear window defroster
General notes The rear window defroster has a high current
draw. You should therefore switch it off as
soon as the rear window is clear. Otherwise,
the rear window defroster switches off
automatically after several minutes.
If the battery voltage is too low, the rear
window defroster may switch off.148
Operating the climate control systemsClimate control