cooling MERCEDES-BENZ SLK-CLASS ROADSTER 2012 Owners Manual

1, 2, 3 ...
12 V socket see Sockets
A
ABS (Anti-lock Braking System) Display message ............................ 200
Function/notes ................................ 56
Important safety notes ....................56
Warning lamp ................................. 230
Activating/deactivating cooling
with air dehumidification ................. 121
Active service system PLUS see ASSYST PLUS service interval
display
ADAPTIVE BRAKE ................................. 62
Additional speedometer ................... 192
Additives (engine oil) ........................ 327
Air bags Display message ............................ 211
Front air bag (driver, front
passenger) ....................................... 39
Head bag ......................................... 41
Important safety notes ....................38
Knee bag .......................................... 40
PASSENGER AIR BAG OFF
indicator lamp .................................. 42
Safety guidelines ............................. 37
Side impact air bag ..........................40
Air-conditioning system
see Climate control
AIRGUIDE ............................................. 88
Air pressure see Tire pressure
AIRSCARF
Problem (malfunction) .....................96
Setting the vents ........................... 127
Switching on/off .............................. 96
Air vents
Important safety notes ..................126
Setting ........................................... 126
Setting the AIRSCARF vents ..........127
Setting the center air vents ...........126
Setting the side air vents ...............127
Switching AIRSCARF on/off ............96
Alarm system
see ATA (Anti-Theft Alarm system)
Alertness Assistant
see ATTENTION ASSIST
Ambient lighting (on-board
computer) .......................................... 192
AMG menu (on-board computer) ..... 195
Anti-lock Braking System see ABS (Anti-lock Braking System)
Anti-Theft Alarm system
see ATA (Anti-Theft Alarm system)
Ashtray ............................................... 247
Assistance menu (on-board
computer) .......................................... 190
ATA (Anti-Theft Alarm system) Activating/deactivating ...................65
Function ........................................... 65
Switching off the alarm ....................65
ATTENTION ASSIST
Activating/deactivating .................191
Display message ............................ 219
Function/notes ............................. 176
Audio menu (on-board computer) .... 188
Audio system see separate operating instructions
Authorized Mercedes-Benz Center
see Qualified specialist workshop
Authorized workshop
see Qualified specialist workshop
AUTO lights
Display message ............................ 216
see Lights
Automatic engine start (ECO start/
stop function) .................................... 136
Automatic engine switch-off (ECO
start/stop function) .......................... 135
Automatic headlamp mode .............. 106
Automatic transmission Automatic drive program ...............143
Changing gear ............................... 141
Display message ............................ 224
Driving tips .................................... 141
Emergency running mode ..............146
Kickdown ....................................... 142
Manual drive program ....................144
Problem (malfunction) ...................146
Program selector button ................1424Index

Wiper blades .................................. 268
Wooden trim .................................. 270
Car wash (care) ................................. 265
CD player/CD changer (on-board
computer) .......................................... 188
Center console Lower section .................................. 31
Upper section .................................. 30
Central locking
Automatic locking (on-board
computer) ...................................... 193
Locking/unlocking (SmartKey) ........68
Changing bulbs
High-beam headlamps ...................111
Important safety notes ..................109
Low-beam headlamps ....................111
Overview of bulb types ..................110
Parking lamps ................................ 112
Removing/replacing the cover
(front wheel arch) .......................... 111
Reversing lamps ............................ 112
Standing lamps (front) ...................112
Turn signals (front) ......................... 112
Children
In the vehicle ................................... 53
Restraint systems ............................ 53
Child seat
Special seat belt retractor ...............55
Cigarette lighter ................................ 247
Cleaning Mirror turn signal ........................... 268
Climate control
Air-conditioning system .................117
Automatic climate control (dual-
zone) .............................................. 119
Controlling automatically ...............122
Cooling with air dehumidification ..121
Defrosting the windshield ..............124
Important safety notes ..................116
Indicator lamp ................................ 122
Maximum cooling .......................... 124
Notes on using automatic climate
control ........................................... 120
Notes on using the air-
conditioning system ....................... 118
Overview of systems ......................116
Problems with cooling with air
dehumidification ............................ 122Problem with the rear window
defroster ........................................ 125
Setting the air distribution .............123
Setting the airflow .........................123
Setting the air vents ......................126
Setting the temperature ................122
Switching air-recirculation mode
on/off ............................................ 125
Switching on/off ........................... 121
Switching residual heat on/off ......125
Switching the rear window
defroster on/off ............................ 124
Switching the ZONE function on/
off .................................................. 123
Cockpit
Overview .......................................... 26
see Instrument cluster
Collapsible spare wheel
Inflating ......................................... 280
see Emergency spare wheel
COMAND
see separate operating instructions
Combination switch .......................... 107
Consumption statistics (on-board
computer) .......................................... 185
Convenience closing feature .............. 81
Convenience opening feature see Opening/closing the side
windows (all)
Coolant (engine)
Checking the level .........................262
Display message ............................ 216
Filling capacity ............................... 328
Notes ............................................. 327
Temperature (on-board computer) . 195
Temperature gauge ........................ 181
Warning lamp ................................. 235
Cooling
see Climate control
Cornering light (display message) ... 213
Cornering light function Function/notes ............................. 108
Crash-responsive emergency
lighting ............................................... 109
Cruise control Cruise control lever .......................156
Deactivating ................................... 158
Display message ............................ 2226Index

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 Please read the information on qualified
specialist workshops ( Y page 23).
Overview of climate control systems
Important safety notes
GWARNING
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 blocked filter replaced at a Mercedes-
Benz Center as soon as possible.
GWARNING
Follow the recommended settings for heating
and cooling given on the following pages.
Otherwise, the windows could fog up,
impairing visibility and endangering you and
others.
The air-conditioning system/automatic
climate control controls the temperature and
the humidity of the vehicle interior and filters
undesirable substances from the air.
The air-conditioning system/automatic
climate control is only operational when the
engine is running. 7
The system only works
optimally when the side windows and the roof
are closed.
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 The integrated filter can filter out most
particles of dust and completely filters out
pollen. A clogged filter reduces the amount
of air supplied to the vehicle interior. For
this reason, you should always observe 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.7 The residual heat function can only be activated/deactivated when the ignition is switched off.116Overview of climate control systemsClimate control

Air-conditioning system control panel
Canada only
:To set the temperature (Y page 122);To activate/deactivate the residual heat function ( Y page 125)=To set the air distribution ( Y page 123)?To defrost the windshield ( Y page 124)ATo activate/deactivate cooling with air dehumidification ( Y page 121)BTo activate/deactivate air-recirculation mode ( Y page 125)CTo set the airflow ( Y page 123)DTo switch the rear window defroster on/off ( Y page 124)
USA only
:To set the temperature ( Y page 122);To switch maximum cooling MAX COOL on/off ( Y page 124)Overview of climate control systems117Climate controlZ

=To set the air distribution (Y page 123)?To defrost the windshield ( Y page 124)ATo activate/deactivate cooling with air dehumidification ( Y page 121)BTo activate/deactivate air-recirculation mode ( Y page 125)CTo set the airflow ( Y page 123)DTo switch the rear window defroster on/off ( Y page 124)Notes on using the 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 climate control 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 the O and ¯ settings.
Recommendation for air distribution in
summer: set the P setting.
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.118Overview of climate control systemsClimate control

Control panel for 2-zone automatic climate control
Canada only
:To set the temperature, left (Y page 122);To defrost the windshield ( Y page 124)=To switch the ZONE function on/off?To activate/deactivate cooling with air dehumidification ( Y page 121)To activate/deactivate the residual heat function ( Y page 125)ATo switch the rear window defroster on/off ( Y page 124)BTo set the temperature, right ( Y page 122)CTo activate/deactivate air-recirculation mode ( Y page 125)DTo set the air distribution ( Y page 123)ETo increase the airflow ( Y page 123)FTo reduce the airflow ( Y page 123)GTo switch climate control on/off ( Y page 121)HTo set climate control to automatic ( Y page 122)Overview of climate control systems119Climate controlZ

USA only
:To set the temperature, left (Y page 122);To defrost the windshield ( Y page 124)=To switch maximum cooling MAX COOL on/off ( Y page 124)?To activate/deactivate cooling with air dehumidification ( Y page 121)ATo switch the rear window defroster on/off ( Y page 124)BTo set the temperature, right ( Y page 122)CTo activate/deactivate air-recirculation mode ( Y page 125)DTo set the air distribution ( Y page 123)ETo increase the airflow ( Y page 123)FTo reduce the airflow ( Y page 123)GTo switch climate control on/off ( Y page 121)HTo set climate control to automatic ( Y page 122)Notes on using 2-zone 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 8
/ Á 9
. The indicator lamps
in the à and ¿ /Á buttons light
up.
R Set the temperature to 72 ‡ (22 †).ROnly 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 side
for the front-passenger side and the rear8 USA only.
9 Canada only.120Overview of climate control systemsClimate control

compartment 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
Important information
GWARNING
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 Activate climate control primarily using
the à button ( Y page 122).
Activating/deactivating
Air-conditioning system
XTo activate: turn airflow control C
( Y page 117) clockwise to the desired
position (except position 0).XTo deactivate: turn airflow control C
( Y page 117) counter-clockwise to position
0 .Dual-zone automatic climate controlXTurn the SmartKey to position 2 in the
ignition lock.X To activate: press the à button.
The indicator lamp in the à button 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 come
into effect again.XTo deactivate: press the ^ button.
The indicator lamp in the ^ button lights
up.
Activating/deactivating cooling with
air dehumidification
Important information
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.
GWARNING
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.
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.
Depending on the equipment level, the
control panel has either the Á button or
¿ button.
i The cooling with air dehumidification
function uses refrigerant R134a. This
coolant does not contain
chlorofluorocarbons, and therefore does
not damage the ozone layer.
Operating the climate control systems121Climate controlZ

Activating/deactivatingXTo switch on: press the ¿ or Á
button.
The indicator lamp in the ¿ or Á
button comes on.XTo deactivate: press the ¿ or Á
button.
The indicator lamp in the ¿ or Á
button goes off. The cooling with air
dehumidification function has a delayed
switch-off feature.
Problems with the cooling with air
dehumidification function
If the ¿ or Á button is pressed, the
indicator lamp in the button flashes three
times or stays off. You can no longer switch
on the cooling with air dehumidification
function.
XConsult a qualified specialist workshop.
Setting climate control to automatic
GWARNING
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.
The "automatic climate control" function is
only available in conjunction with automatic
climate control.
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.
XTurn the SmartKey to position 2 in the
ignition lock.XSet the desired temperature.XTo activate: press the à button.
The indicator lamp in the à button lights
up. Automatic air distribution and airflow
are activated.XTo switch off: press the _ button.
or
XPress the I or K button.
The indicator lamp in the à button goes
out.
Setting the temperature
Air-conditioning system
XTurn the SmartKey to position 2 in the
ignition lock.XTo increase/reduce: turn
thumbwheel : clockwise or counter-
clockwise ( Y page 117).
Only change the temperature setting in
small increments. Start at 72 ‡ (22 † ).
Dual-zone automatic climate control
Different temperatures can be set for the
driver's and front-passenger sides.
XTurn the SmartKey to position 2 in the
ignition lock.XTo increase/reduce: turn controls : and
B (Y page 119) clockwise or counter-
clockwise.
Only change the temperature setting in
small increments. Start at 72 ‡ (22 † ).122Operating the climate control systemsClimate control

When the buttons or controls for
temperature, airflow or air distribution are
activated, the temperature setting for the
driver's side is not adopted for the other
climate control zones.XTo 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
You can use this function to defrost the
windshield or to defrost the inside of the
windshield and the side windows.
i You should only select the defrosting
function until the windshield is clear again.
XTurn the SmartKey to position 2 in the
ignition lock.XTo 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 11
R high temperature 11
R air distribution to the windshield and
front side windows
R air-recirculation mode offXTo switch off: press the ¬ button.
The indicator lamp in the ¬ button goes
out. The previously selected settings come
into effect again. The cooling with airdehumidification function remains on. Air-
recirculation mode remains deactivated.
or
XPress the à button 12
.
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.
When you activate MAX COOL, climate
control switches to the following functions:
R maximum cooling
R maximum airflow
R air-recirculation mode on
XTo activate: press the Ù button.
The indicator lamp in the button lights up.XTo deactivate: press the Ù button
again.
The indicator lamp goes out. The previously
selected settings come into effect again.
Rear window defroster
Activating/deactivating
GWARNING
Any accumulation of snow and ice should be
removed from the rear window before driving.
Visibility could otherwise be impaired,
endangering 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. Otherwise, the
rear window defroster switches off
automatically after several minutes.
11 Depending on the outside temperature.
12 Automatic climate control.124Operating the climate control systemsClimate control