2012 MERCEDES-BENZ SL ROADSTER window

X
Make sure that the key is in position 1or 2
in the ignition lock.
X To switch on: press button:repeatedly
until the desired heating level is set.
X To switch off: press button:repeatedly
until all the indicator lamps go out.
i If the battery voltage is too low, the seat
heating may switch off.
Problems with the seat heating The seat heating has switched off prema-
turely or cannot be switched on. The vehicle's
electrical system voltage is too low because
too many electrical consumers are switched
on.
X Switch off electrical consumers that you do
not need, such as the rear window heating or interior lighting.
X Once the battery is sufficiently charged,
switch the seat heating on again. Switching the seat ventilation on/off
Switching on/off The three blue indicator lamps in the buttons
indicate the ventilation level you have selec-
ted. X
Make sure that the key is in position 1or 2
in the ignition lock.
X To switch on: press button:repeatedly
until the desired ventilation level is set.
X To switch off: press button:repeatedly
until all the indicator lamps go out.
i If the battery voltage is too low, the seat
ventilation may switch off.
i If you open the roof with the key
(Y page 105), the seat ventilation of the
driver's seat switches on automatically and
the side windows open.
Problems with the seat ventilation The seat ventilation has switched off prema-
turely or cannot be switched on. The vehicle's
electrical system voltage is too low because
too many electrical consumers are switched
on.
X Switch off electrical consumers that you do
not need, such as the rear window heating
or interior lighting. AIRSCARF
Activating/deactivating G
WARNING
When AIRSCARF is switched on, very hot air
can flow from the vents in the head restraints. This could result in burns in the immediate
vicinity of the air vents. There is a risk of injury.
Reduce the heater output before it becomes
too hot. Seats
117Seats, steering wheel and mirrors Z

opened. This occurs irrespective of the posi-
tion of the key in the ignition lock. This makes it easier to exit the vehicle and rescue the
occupants.
The crash-responsive EASY-EXIT feature is
only operational if the EASY-EXIT/ENTRY fea-
ture is activated in the on-board computer
(Y page 243). Mirrors
Rear-view mirror
X
Anti-dazzle mode: flick anti-dazzle
switch :forwards or back. Exterior mirrors
Adjusting the exterior mirrors G
WARNING
The exterior mirrors reduce the size of the
image. Objects visible in the mirrors are
closer than they appear. You could misjudge
the distance from road users driving behind
you when changing lanes, for instance. There is a risk of an accident.
You should therefore always look over your
shoulder to determine the actual distance
from road users driving behind you. G
WARNING
The exterior mirror on the front-passenger
side reduces the size of the image. Visible
objects are actually closer than they appear. This means that you could misjudge the dis-
tance from road users travelling behind, e.g.
when changing lane. There is a risk of an acci-
dent.
For this reason, always make sure of the
actual distance from the road users travelling behind by glancing over your shoulder. X
Make sure that the key is in position 1or 2
in the ignition lock.
X Press button :for the left-hand exterior
mirror or button ;for the right-hand exte-
rior mirror.
The indicator lamp in the corresponding
button lights up in red.
The indicator lamp goes out again after
some time. You can adjust the selected
mirror using adjustment button =as long
as the indicator lamp is lit.
X Press adjustment button =up, down, to
the right or to the left.
The exterior mirror must be set to a position
that provides you with a good overview of
traffic conditions.
The convex exterior mirrors provide a larger
field of vision.
After the engine has been started, the exte-
rior mirrors are automatically heated if the
rear window heating is switched on and the
outside temperature is low. Heating takes a
maximum of 10 minutes.
i The exterior mirrors can also be heated
manually by switching on the rear window
heating. 120
MirrorsSeats, steering wheel and mirrors

Useful information
i This Owner's Manual describes all mod-
els, series and optional equipment for your
vehicle that were available at the time of
going to press. National variations are pos- sible. Note that your vehicle may not be
equipped with all of the functions descri-
bed. This is also the case for systems and
functions relevant to safety.
i Read the information on qualified special-
ist workshops: (Y page 34). Overview of climate control systems
Important safety notes
Observe the settings recommended on the
following pages. The windows could other-
wise mist up.
To prevent the windows from misting 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 "demist windscreen" 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 is only operational when the
engine is running. Optimum operation is only achieved when the side windows and the roof
are closed.
The residual heat function can only be acti-
vated or deactivated with the ignition
switched off (Y page 149).
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
An hour after the key has been removed,
it is possible that the residual heat function may be activated automatically in order to
dry the air-conditioning system. The vehicleis then ventilated for 30 minutes to dry the air-conditioning system. 140
Overview of climate control systemsClimate control

Control panel for THERMOTRONIC automatic climate control (2-zone)
:
To set the temperature, left (Y page 145)
; To set climate control to automatic mode (Y page 144)
= To demist the windscreen (Y page 146)
? To activate/deactivate the residual heat function (Y page 149)
A To activate/deactivate cooling with air dehumidification (Y page 142)
B To switch the rear window heating on/off (Y page 147)
C To switch the ZONE function on/off (Y page 146)
D To set the temperature, right (Y page 145)
E To switch climate control on/off (Y page 142)
F To set the air distribution (Y page 145)
G To set the airflow (Y page 146)
H To adjust the airflow (Y page 144)
I To activate/deactivate air-recirculation mode (Y page 148)Information about using
THERMOTRONIC automatic climate
control
Automatic climate control The following contains instructions and rec-
ommendations to enable you to get the most
out of your THERMOTRONIC automatic cli-
mate control.
R Activate climate control using the Ãand
¿ buttons on the control panel of the climate control. The indicator lamps in
the
à and¿ buttons light up.
R In 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.
R Set the temperature to 22 †.
R Only use the "Windscreen demisting" func-
tion briefly until the windscreen is clear
again.
R Only use air-recirculation mode briefly, e.g.
if there are unpleasant outside odours or Overview of climate control systems
141Climate control

when in a tunnel. The windows could oth-
erwise mist up, as 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
heat function can only be activated or deac- tivated with the ignition switched off.
R Vehicles with COMAND Online: 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 Online operating
instructions. You will see the current set-
tings of the various climate control func-
tions.
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 160). Operating the climate control system
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 mist up.
Therefore, only switch off climate control
briefly.
i Activate climate control primarily using
the à button (Y page 144). Activating/deactivating X
Turn the key to position 2in the ignition
lock (Y page 155).
X To switch on: press theÃbutton on
the control panel for the climate control.
The indicator lamp in the Ãbutton lights
up. Airflow and air distribution are set to
automatic mode.
or
X Press the ^button on the control panel
for the climate control.
The indicator lamp in the ^button goes
out. The previous settings are reactivated.
X To switch off: press the^button.
The indicator lamp in the ^button lights
up. Activating/deactivating the cooling
with air dehumidification function
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 mist up more quickly. Therefore,
only switch off cooling with air dehumidifica-
tion for a short period.
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 cooling mode is active. Thisis normal and not a sign that there is a mal-
function. 142
Operating the climate control systemClimate control

air vents. The side air vents can only be
closed when the controls on the side air
vents are turned downwards. Setting the airflow
Activating/deactivating X
Turn the key to position 2in the ignition
lock (Y page 155).
X To increase: press theKbutton.
X To reduce: press theIbutton. Switching the ZONE function on/off
X
To switch on: press theábutton.
The indicator lamp in the ábutton lights
up. The temperature setting for the driver's 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-passenger
side. Demisting the windscreen
General notes Example:
¬button
You can use this function to defrost the wind-
screen or to demist the inside of the wind-
screen and the side windows.
Switch off the "Windscreen demisting" func-
tion as soon as the windscreen is clear again.
Switching the "Demisting windscreen"
on/off X
Turn the key to position 2in the ignition
lock (Y page 155).
X To activate: 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 windscreen and
front side windows
R air-recirculation mode off
X To deactivate: press the¬button.
The indicator lamp in the ¬button goes
out. The previous settings are reactivated. 146
Operating the climate control systemClimate control

Air-recirculation mode remains deactiva-
ted.
or
X Press the Ãbutton.
The indicator lamp in the ¬button goes
out. Airflow and air distribution are set to
automatic mode.
or X Turn the temperature controls on the left or
the right on the climate control panel clock- wise or anti-clockwise.
Turn temperature controls :orD clock-
wise or anti-clockwise (Y page 141).
or
X Press the KorI button. Demisting the windows
Windows misted up on the inside X
Activate the ¿cooling with air dehu-
midification function.
X Activate the Ãmode button.
X If the windows continue to mist up, activate
the ¬ "Windscreen demisting" function.
i You should only select this setting until
the windscreen is clear again.
Windows misted up on the outside X
Activate the windscreen wipers.
X Press the _button repeatedly until the
P orO symbol appears in the dis-
play.
i You should only select this setting until
the windscreen is clear again. Rear window heating
General notes The rear window heating 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 win-
dow heating may switch off.
Activating/deactivating X
Turn the key to position 2in the ignition
lock (Y page 155).
X Press button ¤.
The indicator lamp in the ¤button lights
up or goes out. Operating the climate control system
147Climate control

Problems with the rear window heating
Problem
Possible causes/consequences and
M
MSolutions The rear window heat-
ing has switched off
prematurely or cannot
be activated. The on-board voltage is too low because too many electrical con-
sumers are switched on.
X Switch off any consumers that are not required, e.g. reading
lamps, interior lighting or the seat heating.
When the battery is sufficiently charged, the rear window heat-
ing can be activated again. Activating/deactivating air-recircula-
tion mode
General notes If you switch on air-recirculation mode, the
windows can mist up more quickly, in partic-
ular at low temperatures. Only use air-recir-
culation mode briefly to prevent the windows
misting up.
Activating/deactivating X
Turn the key to position 2in the ignition
lock (Y page 155).
X To activate: press thegbutton.
The indicator lamp in the gbutton lights
up.
i Air-recirculation mode is automatically
activated at high levels of pollution or at
high outside temperatures. When air-recir-
culation mode is activated automatically,
the indicator lamp in the gbutton is not lit. Outside air is added after about
30 minutes.
X To deactivate: press thegbutton.
The indicator lamp in the gbutton goes
out.
i Air-recirculation mode is deactivated
automatically:
R after around five minutes at outside tem-
peratures below approximately 5 †
R after approximately five minutes if cool-
ing with air dehumidification is deactiva- ted
R after around 30 minutes at outside tem-
peratures above approximately 5 †if the
"Cooling with air dehumidification" func- tion is activated Convenience opening/closing using
the air-recirculation button
G
WARNING
When using convenience closing, you could
become trapped within the sweep of the clos- ing window. There is a risk of injury.
Monitor the entire closing procedure when
using convenience closing. When closing,
make sure that no one has any parts of the
body within the closing area. G
WARNING
During convenience opening parts of the body could be drawn in or become trapped 148
Operating the climate control systemClimate control