coolant temperature MERCEDES-BENZ SLS AMG ROADSTER 2012 Owners Manual

Problems with cooling with air
dehumidification ............................ 107
Problem with the rear window
defroster ........................................ 109
Refrigerant ..................................... 282
Setting the air distribution .............107
Setting the airflow .........................108
Setting the air vents ......................110
Setting the temperature ................107
Switching air-recirculation mode
on/off ............................................ 109
Switching on/off ........................... 106
Switching the MONO function on/
off .................................................. 108
Switching the rear window
defroster on/off ............................ 109
Cockpit
Overview .......................................... 26
see Instrument cluster
COMAND
see separate operating instructions
Combination switch ............................ 96
Consumption statistics (on-board
computer) .......................................... 152
Convenience closing feature .............. 77
Convenience opening feature ............ 77
see Opening/closing the side
windows (all)
Coolant
Display message ............................ 177
Coolant (engine)
Checking the level .........................220
Notes ............................................. 283
Temperature (on-board computer) . 160
Cooling
see Climate control
Crash-responsive emergency
lighting ................................................. 98
Cruise control Cruise control lever .......................137
Deactivating ................................... 138
Display message ............................ 180
Driving system ............................... 136
Function/notes ............................. 136
Important safety notes ..................136
LIM indicator lamp .........................137Setting a speed .............................. 137
Storing and maintaining current
speed ............................................. 137
Cup holder
Center console .............................. 202
Important safety notes ..................202
Curb weight
see Technical data
Customer Assistance Center (CAC) ... 22
Customer Relations Department ....... 22
D
Dashboard see Cockpit
Data
see Technical data
Daytime running lamps
Display message ............................ 175
Switching on/off (on-board
computer) ...................................... 157
Switching on/off (switch) ................95
Dealership
see Qualified specialist workshop
Delayed switch-off
Exterior lighting (on-board
computer) ...................................... 158
Interior lighting .............................. 159
Diagnostics connection ...................... 21
Digital speedometer ......................... 152
Display (cleaning instructions) ........ 228
Display messages ASSYST PLUS service interval
display ........................................... 222
Calling up (on-board computer) .....164
Driving systems ............................. 180
Engine ............................................ 176
Hiding (on-board computer) ...........164
Lights ............................................. 173
Safety systems .............................. 170
Service interval display ..................222
SmartKey ....................................... 185
Tires ............................................... 181
Vehicle ........................................... 183
Distance recorder ............................. 152
see Odometer
see Trip odometer
6Index

Paddle shifters ............................... 123
Storing settings (memory
function) .......................................... 91
Stopwatch (RACETIMER) ................... 161
Stowage compartments Armrest (under) ............................. 201
Cup holders ................................... 202
Glove box ....................................... 200
Important safety information .........200
Parcel net ...................................... 201
Rear wall ........................................ 201
Stowage space
Center console .............................. 201
Center console (rear) .....................201
Summer opening
see Convenience opening feature
Summer tires ..................................... 252
Sun visor ............................................ 202
Supplemental Restraint System see SRS (Supplemental Restraint
System)
Surround lighting (on-board
computer) .......................................... 158
Suspension tuning AMG adaptive sport suspension
system ........................................... 138
Switching air-recirculation mode
on/off ................................................. 109
Switching off the alarm (ATA) ............ 59
T
Tachometer ........................................ 148
Tail lamps Display message ............................ 175
Tank
see Fuel tank
Tank content
Fuel gauge ....................................... 27
Technical data ................................... 284
Notes ............................................. 276
Tires/wheels ................................. 272
TELEAID
Call priority .................................... 209
Display message ............................ 173
Downloading destinations
(COMAND) ..................................... 209
Emergency call .............................. 206
Important safety notes ..................205
Locating a stolen vehicle ...............210
MB info call button ........................208
Remote vehicle locking ..................210
Roadside Assistance button ..........207
Search & Send ............................... 209
Self-test ......................................... 205
System .......................................... 205
Telephone
Accepting a call ............................. 155
Menu (on-board computer) ............155
Number from the phone book ........ 156
Redialing ........................................ 156
Rejecting/ending a call .................156
Temperature
Coolant (on-board computer) ......... 160
Engine oil ....................................... 148
Engine oil (on-board computer) ...... 160
Outside temperature ...................... 149
Theft deterrent systems
ATA (Anti-Theft Alarm system) .........59
Immobilizer ...................................... 59
Theft-deterrent systems
Tow-away alarm ............................... 60
Timing (RACETIMER) ......................... 161
TIREFIT kit .......................................... 233
Tire pressure Calling up (on-board computer) .....257
Checking manually ........................256
Display message .................... 181, 183
Maximum ....................................... 256
Notes ............................................. 254
Not reached (TIREFIT) ....................235
Reached (TIREFIT) ..........................235
Recommended ............................... 253
Tire pressure monitoring system
Function/notes ............................. 257
Restarting ...................................... 259
Warning lamp ................................. 196
Tires
Aspect ratio (definition) .................270
Average weight of the vehicle
occupants (definition) ....................269
Bar (definition) ............................... 268
Characteristics .............................. 268
Checking ........................................ 251
Definition of terms .........................268
Direction of rotation ......................27214Index

ProblemPossible causes/consequences and M SolutionsThe 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 220). Observe the warning
notes as you do so and add coolant if necessary.If the coolant level is correct, the engine radiator fan may be faulty.
The coolant is too hot and the engine is no longer being cooled
sufficiently.XAt coolant temperatures under 248 ‡(120 †), drive on to the
nearest qualified specialist workshop, e.g. to an authorized
Mercedes-Benz Center.XAvoid heavy loads on the engine as you do so, e.g. driving in
mountainous terrain and stop-and-go traffic.AMG SPEEDSHIFT DCT 7-speed sports
transmission
Important safety notes
GWARNING
It is dangerous to shift the transmission out
of park position P or neutral position N if the
engine is running at anything more than idling
speed. If you do not depress the brake pedal
with force, the vehicle may accelerate
forwards or backwards. This could cause you
to lose control of your vehicle and cause a
collision. Only shift the transmission into the
drive position when you are firmly depressing
the brake pedal.
E-SELECT selector lever
Overview of transmission positionsjPark position with parking lockkReverse geariNeutralhDrive
! If the engine speed is too high or if the
vehicle is rolling, do not shift the
transmission directly from D to R, from R
to D or directly to P.
Do not open the driver's door while the
vehicle is in motion. At low speeds in
transmission position D or R, park position
P is otherwise engaged automatically.
AMG SPEEDSHIFT DCT 7-speed sports transmission119Driving and parkingZ

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 21).
Important safety notes
You will find an illustration of the instrument
cluster in the "At a glance" section
( Y page 27).
GWARNING
A driver's attention to the road and traffic
conditions must always be his/her primary
focus when driving.
For your safety and the safety of others,
selecting features through the multifunction
steering wheel should only be done by the
driver when traffic and road conditions permit
it to be done safely.
Bear in mind that at a speed of just 30 mph
(approximately 50 km/h ), your vehicle is
covering a distance of 44 feet (approximately
14 m) every second.
GWARNING
No messages will be displayed if either the
instrument cluster or the multifunction
display is inoperative.
As a result, you will not be able to see
information about your driving conditions,
such as
R speed
R outside temperature
R warning/indicator lamps
Rmalfunction/warning messages
R failure of any systems
Driving characteristics may be impaired.
If you must continue to drive, do so with added
caution. Contact an authorized Mercedes-
Benz Center as soon as possible.GWARNING
Malfunction and warning messages are only
indicated for certain systems and are
intentionally not very detailed. The
malfunction and warning messages are
simply a reminder with respect to the
operation of certain systems. They do not
replace the owner's and/or driver's
responsibility to maintain the vehicle's
operating safety. Have all required
maintenance and safety checks performed on
the vehicle. Bring the vehicle to an authorized
Mercedes-Benz Center to address the
malfunction and warning messages.
Displays and operation
Engine oil temperature display
The engine oil temperature gauge is in the
instrument cluster on the right-hand side.
Under normal operating conditions, the
temperature may rise to 140 †.
The transmission fluid temperature and the
coolant temperature are displayed in the
AMG menu ( Y page 160).
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.
148Displays and operationOn-board computer and displays

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
Easy Entry/Exit feature.
You will see the selected setting: on or
off .XPress the a button to save the setting.
Switching the fold-in exterior mirrors with
locking function 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 the driver's or front-
passenger 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 90), 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: on or
off .XPress the a button to save the setting.
Resetting to 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 Settings
menu.XPress the : or 9 button to select the
Factory Settings submenu.XPress the a button to confirm.
The Reset All Settings? message
appears.XPress the : or 9 button to select
Yes or No.XPress the a button to confirm the
selection.
If you have selected Yes, the multifunction
display shows a confirmation message.
AMG menu
AMG displays
XPress the = or ; button on the
steering wheel to select the AMG menu.:Digital speedometer;Engine oil temperature=Coolant temperature?Transmission fluid temperature
If the engine oil temperature is below 80 †
or if the transmission fluid temperature is
below 60 †, the corresponding temperature
gauge flashes. Avoid driving at full engine
output during this time.
SETUP
SETUP displays the drive program, the AMG
adaptive sport suspension system setting
and the selected traction assist.
160Displays and operationOn-board computer and displays

Display messagesPossible causes/consequences and M Solutions?
Coolant Low Stop
Vehicle Turn
Engine OffThe coolant is too hot. In addition, the ? warning lamp in the
instrument cluster lights up and a warning tone sounds.XPull over and stop the vehicle safely and switch off the engine,
paying attention to road and traffic conditions.XMake sure that the air supply to the radiator is not blocked, e.g.
by snow, slush or ice.XWait until the display message disappears before restarting the
engine. Otherwise, the engine could be damaged.XPay attention to the coolant temperature display.XIf the coolant temperature increases again, visit a qualified
specialist workshop immediately.
! If the coolant temperature is over 248 ‡ (120 †), do not
continue driving. The engine will otherwise be damaged.
The poly-V-belt may have torn. A warning tone also sounds.XPull over and stop the vehicle safely and switch off the engine,
paying attention to road and traffic conditions.XCheck the poly-V-belt.XIf the poly-V-belt is not damaged: do not start the engine
again until the display message disappears. Otherwise, the
engine could be damaged.XIf the poly-V-belt is torn: do not continue driving. Consult a
qualified specialist workshop.?The engine fan is defective.XAt coolant temperatures under 248 ‡(120 †), drive to the next
qualified specialist workshop.XAvoid subjecting the engine to heavy loads (e.g. driving in
mountainous terrain) and stop-and-go driving.Displays and operation177On-board computer and displaysZ

Display messagesPossible causes/consequences and M Solutionsd
Stop Engage PThe transmission is faulty. The vehicle loses drive and rolls to a
standstill.XPull over and stop the vehicle safely as soon as possible, paying
attention to road and traffic conditions.XMake sure that the electric parking brake is applied.XPrevent the vehicle from rolling away before you leave it
( Y page 236).XConsult a qualified specialist workshop.d
Transmission oil
cooling
MalfunctionThe transmission coolant pump is faulty. The transmission may
overheat.XIn the on-board computer, select the AMG menu and check the
transmission oil temperature.XAvoid excessive loading, e.g. due to dynamic driving.XAt transmission oil temperatures under 248 ‡(120 †), drive to
the nearest qualified specialist workshop.d
Trans. oil
overheated Drive
on with careThe transmission oil has overheated.
Manual drive program M and shift range restriction are no longer
available. Only drive program C is still available. The engine output
is reduced according to the degree of overheating.XAllow the transmission oil to cool by adopting a defensive driving
style.188Displays and operationOn-board computer and displays

ProblemPossible causes/consequences and M SolutionsçThe red engine
oil temperature
warning lamp
comes on while
the engine is
running. The
engine oil
temperature is
not displayed.The engine control unit data transfer is malfunctioning.XVisit a qualified specialist workshop.7The yellow
reserve fuel
warning lamp
lights up while
the engine is
running.The fuel level has dropped into the reserve range.XRefuel at the nearest gas station.7
The yellow reserve fuel
warning lamp flashes
while the engine is
running.The fuel system pressure is too low. The fuel filler cap is not closed
correctly or the fuel system is leaking.XCheck that the fuel filler cap is correctly closed.XIf the fuel filler cap is not correctly closed: close the fuel filler
cap.XIf the fuel filler cap is closed: visit a qualified specialist
workshop.GWARNING
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.
! If the coolant temperature exceeds 248 ‡(120 †) do not continue driving. The engine will
otherwise be damaged.
Displays and operation195On-board computer and displaysZ

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 21).
Engine compartment
Hood
Opening the hood
GWARNING
Do not pull the release lever while the vehicle
is in motion. Otherwise, the hood could be
forced open by passing air flow.
This could cause the hood to come loose and
injure you and/or others.
GWARNING
Do not open the hood when the engine is
overheated. You could be seriously injured.
Observe the coolant temperature gauge to
determine whether the engine may be
overheated. If you see flames or smoke
coming from the engine compartment, move
away from the vehicle. Wait until the engine
has cooled. If necessary, call the fire
department.
GWARNING
There is a risk of injury if the hood is open,
even if the engine is not running.
Some engine components can become very
hot.
To avoid the risk of burns, only touch those
components described in the Operator's
Manual and observe the relevant safety notes.
GWARNING
To help prevent personal injury, stay clear of
moving parts when the hood is open and the
engine is running.
The radiator fan may continue to run for
approximately 30 seconds or may even
restart after the engine has been turned off.
Stay clear of fan blades.
GWARNING
The engine is equipped with a transistorized
ignition system. Because of the high voltage,
it is dangerous to touch any components
(ignition coils, spark plug sockets, diagnostic
socket) of the ignition system:
R with the engine running
R while starting the engine
R when the ignition is switched on and the
engine is turned manually
XMake sure that the windshield wipers are
switched off.GWARNING
The windshield wipers and wiper linkage
could be set in motion.
When the hood is open, you or others could
be injured by the wiper linkage.
Make sure that the windshield wipers are
switched off. When using KEYLESS-GO, make
sure that no ignition position is selected. All
indicator lamps in the instrument cluster must
be off.
Hood release lever in driver's footwell
218Engine compartmentMaintenance and care

Adding engine oilHEnvironmental note
When adding oil, take care not to spill any. If
oil enters the soil or waterways, it is harmful
to the environment.
! Use only engine oils and oil filters that
have been approved for vehicles equipped
with a service system. A list of the engine
oils and oil filters tested and approved in
accordance with the Mercedes-Benz
Specifications for Service Products can be
called up by visiting http://
www.mbusa.com (USA only). More
information about tested and approved
engine oils and oil filters is available from
any authorized Mercedes-Benz Center.
Damage to the engine or exhaust system is
caused by the following:
R using engine oils and oil filters which
have not been specifically approved for
the service system.
R replacing the engine oil or oil filter after
the replacement interval required by the
service system has elapsed
R using engine oil additives.
XUnscrew and remove oil filler cap : with
the integrated dipstick.XAdd the amount of oil required.
! Do not add too much oil. If the oil level is
above the "max" mark on the dipstick, too
much oil has been added. This can lead to
damage to the engine or the catalytic
converter. Have excess oil siphoned off.
XReplace cap : on the filler neck and
tighten clockwise.
Ensure that the cap locks into place
securely.
You will find further information about engine
oil in the "Technical data" section
( Y page 282).
Checking and adding other service
products
Checking the coolant level
GWARNING
In order to avoid any potentially serious burns:
R use extreme caution when opening the
hood if there are any signs of steam or
coolant leaking from the cooling system, or
if the coolant temperature display indicates
that the coolant is overheated.
R do not remove the pressure cap on the
coolant reservoir if the coolant temperature
is above 158 ‡ (70 †). Allow the engine to
cool down before removing the cap. The
coolant reservoir contains hot fluid and is
under pressure.
R using a rag, slowly turn the cap
approximately 1
/ 2 turn to relieve excess
pressure. If opened immediately, scalding
hot fluid and steam will be blown out under
pressure.
R do not spill antifreeze on hot engine parts.
Antifreeze contains ethylene glycol which
may burn if it comes into contact with hot
engine parts.
Only check the coolant level when the vehicle
is on a level surface and the engine has cooled
down.
XSet the Start/Stop button to key position
2 .XCheck the coolant temperature display in
the "AMG" menu ( Y page 160).
The coolant temperature must be below
158 ‡ (70 †).220Engine compartmentMaintenance and care