2016 MERCEDES-BENZ SL-Class climate control

Useful information............................136
Overview of climate control sys-
tems ................................................... 136
Operating the climate control sys-
tems ................................................... 139
Setting the air vents .........................147
135
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.
iRead the information on qualified special-
ist workshops (
Ypage 34).
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:
Rswitch off climate control only briefly
Rswitch on air-recirculation mode only
briefly
Rswitch on the cooling with air dehumidifi-
cation function
Rswitch 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 146).
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 more
quickly.
iIt 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.
136Overview of climate control systems
Climate control

Control panel for dual-zone automatic climate control
Canadaonly
:
Sets the temperature, left (Ypage 142)
;Sets climate control to automatic (Ypage 141)
=Defrosts the windshield (Ypage 143)
?Switches the residual heat on or off (Ypage 146)
ASwitches cooling with air dehumidification on/off (Ypage 139)
BSwitches the rear window defroster on/off (Ypage 144)
CSwitches the ZONE function on/off (Ypage 143)
DSets the temperature, right (Ypage 142)
EActivates/deactivates climate control (Ypage 139)
FSets the air distribution (Ypage 142)
GSets the airflow (Ypage 143)
HAdjusts the climate mode settings (Ypage 141)
ISwitches air-recirculation mode on/off (Ypage 146)
Overview of climate control systems137
Climate control

USA only
:
Sets the temperature, left (Ypage 142)
;Sets climate control to automatic (Ypage 141)
=Defrosts the windshield (Ypage 143)
?Switches the maximum cooling MAX COOL on or off (Ypage 144)
ASwitches cooling with air dehumidification on/off (Ypage 139)
BSwitches the rear window defroster on/off (Ypage 144)
CSwitches the ZONE function on/off (Ypage 143)
DSets the temperature, right (Ypage 142)
EActivates/deactivates climate control (Ypage 139)
FSets the air distribution (Ypage 142)
GSets the airflow (Ypage 143)
HAdjusts the climate mode settings (Ypage 141)
ISwitches air-recirculation mode on/off (Ypage 146)
Optimum use of 3-zone automatic cli-
mate control
Automatic climate control
The following contains instructions and rec-
ommendations to enable you to get the most
out of your automatic climate control.
RActivate climate control using the Ãand
¿ buttons on the control panel of the
climate control. The indicator lamps in
the à and¿ buttons light up.
RIn automatic mode, the ñbutton on the
climate control panel may be used to addi- tionally adjust the airflow (FOCUS/
MEDIUM/DIFFUSE). The MEDIUM level is
recommended.
RSet the temperature to 72 ‡ (22 †).
ROnly use the "Windshield defrosting" func-
tion briefly until the windshield is clear
again.
ROnly 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.
138Overview of climate control systems
Climate control

RUse 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 theábutton goes out.
RUse 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.
RVehicles 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 cli-
mate control functions.
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
(
Ypage 156).
Operating the climate control sys-
tems
Activating/deactivating climate con-
trol
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
iActivate climate control primarily using
the à button (
Ypage 141).
Activating or deactivating
XTurn the SmartKey to position 2in the igni-
tion lock (
Ypage 151).
XTo activate: press theÃbutton.
The indicator lamp in the Ãbutton lights
up. Airflow and air distribution are set to
automatic mode.
or
XPress the ^button.
The indicator lamp in the ^button goes
out. The previously selected settings are
restored.
XTo deactivate: press the^button.
The indicator lamp in the ^button lights
up.
Switching cooling with air dehumidi-
fication on/off
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 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.
Operating the climate control systems139
Climate control

Activatingordeactivating
Example: ¿button
XTo act ivate:press th e¿ button.
The indicator lamp in th e¿ buttonlights
up.
XTo deacti vate:press th e¿ button.
The indicator lamp in th e¿ buttongoes
out .The "Cooling wit hair dehumidification "
function has adelayed switch-off feature.
140Operating the climate control systems
Climate control

Problems with the "Cooling with air dehumidification" function
ProblemPossible causes/consequences andMSolutions
The indicator lamp in
the¿ 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.
XVisit 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.
Automatic control
XTurn the SmartKey to position 2in the igni-
tion lock (
Ypage 151).
XSet the desired temperature.
XTo activate: press theÃbutton.
The indicator lamp in the Ãbutton lights
up. Automatic air distribution and airflow
are activated.
iWhen automatic mode is enabled, the cli-
mate mode can be selected (
Ypage 141).
XTo switch to manual mode: press the
_ button.
or
XPress the IorK button.
The indicator lamp in the Ãbutton goes
out.
Adjusting the climate mode settings
You can select the following climate mode
settings in automatic mode:
FOCUS high airflow, slightly cooler setting
MEDIUM medium airflow, standard setting
DIFFUSE low airflow, slightly warmer and draft-free setting
Operating the climate control systems141
Climate control

Example:ñbutton
XTurn the SmartKey to position 2in the igni-
tion lock (
Ypage 151).
XPress the Ãbutton.
XPress the ñbutton repeatedly until the
desired climate mode appears in the dis-
play.
Setting the temperature
Activating or deactivating
Different temperatures can be set for the
driver's and front-passenger sides.
XTurn the SmartKey to position 2in the igni-
tion lock (
Ypage 151).
XTurn control :orD counter-clockwise or
clockwise.
Only change the temperature setting in
small increments. Start at 72 ‡ (22 †).
iIf you turn controls :and Dcounter-
clockwise to the lowest temperature set-
ting, air-recirculation mode may activate automatically, depending on the outside
temperature.
Setting the air distribution
Activating or deactivating
XTurn the SmartKey to position 2in the igni-
tion lock (
Ypage 151).
XPress the _button repeatedly until the
desired symbol appears in the display.
Air distribution settings
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
(Canada only)
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
(Canada only)
iRegardless of the air distribution setting,
airflow is always directed through the side
142Operating the climate control systems
Climate control