2012 MERCEDES-BENZ SLK-CLASS ROADSTER coolant temperature

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

Stowage compartmentsArmrest (front) ............................... 243
Armrest (under) ............................. 243
Center console .............................. 243
Cup holders ................................... 245
Door ............................................... 244
Eyeglasses compartment ...............243
Glove box ....................................... 242
Important safety information .........242
Parcel net ...................................... 244
Rear wall ........................................ 244
Summer opening
see Convenience opening feature
Summer tires ..................................... 296
Sun visor ............................................ 246
Supplemental Restraint System see SRS (Supplemental Restraint
System)
Surround lighting (on-board
computer) .......................................... 193
Switching air-recirculation mode
on/off ................................................. 125
Switching off the alarm (ATA) ............ 65
T
Tachometer ........................................ 181
Tail lamps Display message ............................ 214
see Lights
Tank
see Fuel tank
Tank content
Fuel gauge ....................................... 27
Technical data
Notes ............................................. 322
Tires/wheels ................................. 316
Vehicle data ................................... 329
TELEAID
Call priority .................................... 252
Display message ............................ 207
Downloading destinations
(COMAND) ..................................... 252
Emergency call .............................. 249
Important safety notes ..................248
Locating a stolen vehicle ...............254
MB info call button ........................251
Remote vehicle locking ..................254
Roadside Assistance button ..........251
Search & Send ............................... 253
Self-test ......................................... 249
System .......................................... 249
Vehicle remote unlocking ..............253
Telephone
Accepting a call ............................. 189
Display message ............................ 225
Menu (on-board computer) ............189
Number from the phone book ........ 190
Redialing ........................................ 190
Rejecting/ending a call .................190
Temperature
Coolant .......................................... 181
Coolant (on-board computer) ......... 195
Engine oil (on-board computer) ...... 195
Outside temperature ...................... 181
Setting (climate control) ................122
Theft deterrent systems
ATA (Anti-Theft Alarm system) .........65
Immobilizer ...................................... 64
Time
see Separate Operator's Manual
Timing (RACETIMER) ......................... 196
Tiredness assistant see ATTENTION ASSIST
Tire pressure
Calling up (on-board computer) .....301
Checking manually ........................301
Display message ............................ 222
Maximum ....................................... 300
Notes ............................................. 299
Recommended ............................... 297
Tire pressure monitoring system
Function/notes ............................. 301
Restarting ...................................... 303
Warning lamp ................................. 238
Tires
Aspect ratio (definition) .................314
Average weight of the vehicle
occupants (definition) ....................313
Bar (definition) ............................... 312
Characteristics .............................. 312
Checking ........................................ 295
Definition of terms .........................312
Direction of rotation ......................316
Display message ............................ 22216Index

Instrument cluster
Displays and controls
FunctionPage:Speedometer with
segments
181
;Fuel gauge=Tachometer181FunctionPage?Coolant temperature181AMultifunction display183BInstrument lighting180Instrument cluster27At a glance

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

iIf you activate the residual heat function
at high temperatures, only the ventilation
will be activated. The blower runs at
medium speed.XTurn the SmartKey to position 0 in the
ignition lock or remove it.XTo activate: press the Ì or Á
button.
The indicator lamp in the Ì or Á
button comes on.XTo deactivate: press the Ì or Á
button.
The indicator lamp in the Ì or Á
button goes off.
i Residual heat is deactivated
automatically:
R after about 30 minutes
R when the ignition is switched on
R if the battery voltage drops
R if the coolant temperature is too low
Setting the air vents
Important safety notes
GWARNING
When operating the climate control, the air
that enters the passenger compartment
through the air vents can be very hot or very
cold (depending on the set temperature). This
could cause burns or frostbite to unprotected
skin in the immediate area of the air vents.
Always keep sufficient distance between
unprotected parts of the body and the air
vents. If necessary, use the air distribution
adjustment to direct the air to air vents in the
vehicle interior that are not in the immediate
area of unprotected skin.
In order to ensure the direct flow of fresh air
through the air vents into the vehicle interior,
please observe the following notes:
R keep the air inlet grille on the hood and in
the engine compartment on the front-
passenger side free of blockages, such as
ice, snow or leaves.
R never cover the air vents or air intake grilles
in the vehicle interior.
i You can tilt the adjuster for the air vents
vertically or horizontally to alter the
direction of the airflow.
i For optimal climate control in the vehicle,
open the air vents completely and set the
adjusters to the central position.
Setting the center air vents
1To open the center air vent2To close the center air vent=Center air vent, right?Center air vent, leftXTo open the center air vent: turn the
adjuster in center air vent = or ? in the
direction of the arrow to position 1.XTo close the center air vent: turn the
adjuster in center air vent = or ? in the
direction of the arrow to position 2 until
it engages.126Setting the air ventsClimate control

Problems with the engineProblemPossible causes/consequences and M SolutionsThe engine does not
start. The starter motor
can be heard.R There is a malfunction in the engine electronics.
R There is a malfunction in the fuel supply.XBefore attempting to start the engine again, turn the SmartKey
in the ignition back to position 0 or press the Start/Stop button
repeatedly until all indicator lamps in the instrument cluster go
out.XTry to start the engine again ( Y page 132). Avoid excessively
long and frequent attempts to start the engine as these will drain
the battery.
If the engine does not start after several attempts:
XConsult a qualified specialist workshop.The engine does not
start. You cannot hear
the starter motor.The on-board voltage is too low because the battery is too weak
or discharged.XJump-start the vehicle ( Y page 285).
If the engine does not start despite attempts to jump-start it:
XConsult a qualified specialist workshop.The starter motor was exposed to a thermal load that was too high.XAllow the starter motor to cool down for approximately two
minutes.XTry to start the engine again.
If the engine still does not start:
XConsult a qualified specialist workshop.The engine is not
running smoothly and
is misfiring.There is a malfunction in the engine electronics or in a mechanical
component of the engine management system.XOnly depress the accelerator pedal slightly.
Otherwise, non-combusted fuel may get into the catalytic
converter and damage it.XHave the cause rectified immediately at a qualified specialist
workshop.The coolant
temperature gauge
shows a value above
248 ‡ (120 †).The coolant level is too low. The coolant is too hot and the engine
is no longer being cooled sufficiently.XStop as soon as possible and allow the engine and the coolant
to cool down.XCheck the coolant level ( Y page 262). Observe the warning
notes as you do so and add coolant if necessary.138DrivingDriving and parking

Coolant temperature displayGWARNING
Driving when your engine is overheated can
cause some fluids which may have leaked into
the engine compartment to catch fire. You
could be seriously burned.
Steam from an overheated engine can cause
serious burns which can occur just by opening
the engine hood. Stay away from the engine
if you see or hear steam coming from it.
Stop the vehicle in a safe location away from
other traffic. Turn off the engine, get out of the
vehicle and do not stand near the vehicle until
the engine has cooled down.
The coolant temperature gauge is in the
instrument cluster on the right-hand side.
Under normal operating conditions and with
the specified coolant level, the coolant
temperature may rise to 248 ‡ (120 †).
! A display message is shown if the coolant
temperature is too high.
If the coolant temperature is over
248 ‡(120 †), do not continue driving. The
engine will otherwise be damaged.
Tachometer
The red band in the tachometer indicates the
engine's overrevving range.
! Do not drive in the overrevving range, as
this could damage the engine.
The fuel supply is interrupted to protect the
engine when the red band is reached.
Outside temperature display
The outside temperature display is in the
multifunction display ( Y page 183).
GWARNING
The outside temperature indicator is not
designed to serve as an ice-warning device
and is therefore unsuitable for that purpose.
Indicated temperatures just above the
freezing point do not guarantee that the road
surface is free of ice. The road may still be icy,
especially in wooded areas or on bridges.
Changes in the outside temperature are
displayed after a short delay.
Speedometer with segments
The segments in the speedometer indicate
which speed range is available.
Cruise control ( Y page 156) activated:
The segments light up from the stored speed
to the maximum speed.
DISTRONIC PLUS ( Y page 158) activated:
One or two segments in the set speed range
light up.
DISTRONIC PLUS detects a vehicle in front:
The segments between the speed of the
vehicle in front and the stored speed light up.
Operating the on-board computer
Overview
The on-board computer is activated as soon
as you turn the SmartKey to position 1 in the
ignition lock.
You can control the multifunction display and
the settings in the on-board computer using
the buttons on the multifunction steering
wheel.
Displays and operation181On-board computer and displaysZ

XPress the = or ; button on the
steering wheel to select the Sett. menu.XPress the : or 9 button to select the
Convenience submenu.XPress a to confirm.XPress the : or 9 button to select the
Belt Adjustment function.
You will see the selected setting: on or
off .XPress the a button to save the setting.
Switching the fold-in mirrors when
locking feature is on/off
If you switch on the Fold Mirrors in when
Locking function, the exterior mirrors fold in
when you lock the vehicle. If you unlock the
vehicle and then open a door, the exterior
mirrors fold out again.
If you have switched the function on and you
fold the exterior mirrors in using the button
on the door (Y page 99), they will not fold out
automatically. The exterior mirrors can then
only be folded out using the button on the
door.
XPress the = or ; button on the
steering wheel to select the Settings
menu.XPress the : or 9 button to select the
Convenience submenu.XPress the a button to confirm.XPress the : or 9 button to select the
Fold mirrors in when locking:
function.
You will see the selected setting: Enabled
or Disabled .XPress the a button to save the setting.
Restoring the factory settings
For safety reasons, the Daytime Running
Lights: function in the Lights submenu is
only reset when the vehicle is stationary.
XPress the = or ; button on the
steering wheel to select the Sett. menu.XPress the : or 9 button to select the
Factory Setting submenu.XPress the a button to confirm.
The Reset All Settings? message
appears.XPress the : or 9 button to select
No or Yes .XPress the a button to confirm the
selection.
If you select Yes, the multifunction display
shows a confirmation message.
AMG menu in AMG vehicles
AMG displays
XPress the = or ; button on the
steering wheel to select the AMG menu.:Digital speedometer;Gear indicator=Upshift indicator?Engine oil temperatureACoolant temperatureBStatus display of the ECO start/stop
function ( Y page 135)
Upshift indicator UP = indicates that the
engine has reached the overrevving range
when in the manual gearshift program.
Upshift indicator UP = fades out other
messages until you have shifted up.
Menus and submenus195On-board computer and displaysZ