2018 MERCEDES-BENZ SLC ROADSTER coolant temperature

System .......................................... 224
VehicleHealth Check .................... 227
Telephone
Accepting acall( multifunction
steering wheel ).............................. 170
Authorizing amobilephone (con-
necting )......................................... 215
Authorizing amobil ephone via the
device manager (connecting )......... 216
Connecting amobilephone
(device manager )........................... 216
Connecting amobilephone (gen-
erali nformation) ............................ 215
Displa ymessage ............................ 200
Menu (on-board computer) ............ 169
Numbe rfrom the phone boo k........ 170
Redialing ........................................ 170
Rejecting/ending acall. ................ 170
see also Digital Operator's Man-
ua l.................................................. 211
Temperature
Coolant .......................................... 164
Coolant (on-board computer,
Mercedes-AMGS LC 43) ................ 175
Engine oil( on-board computer,
Mercedes-AMGS LC 43) ................ 175
Outsid etemperature ...................... 163
Setting (climate control )................ 109
Transmission oil( on-board com-
puter, Mercedes-AMGS LC 43) ...... 175
Timing (RACETIMER) ......................... 175
Tire pressure
Calling up (on-board computer) ..... 267
Checking manually ........................ 266
Displa ymessage ............................ 196
Maximu m....................................... 266
Not reached (TIREFIT) .................... 249
Notes. ............................................ 265
Reached (TIREFIT) .......................... 249
Recommended ............................... 263
Tire pressure loss warnin gsystem
Generaln otes ................................ 266
Important safety notes .................. 267
Restarting ...................................... 267
Tire pressure monitor
Checking the tire pressure elec-
tronically ........................................ 269
Function/note s............................. 267 Generaln
otes ................................ 267
Important safety notes .................. 268
Radi otypea pproval for the tire
pressure monitor ........................... 270
Restarting ...................................... 270
Warning lamp ................................. 210
W

arning message .......................... 269
Tire-changet oolkit........................... 246
TIREFI Tkit.......................................... 247
Important safety notes .................. 247
Storage location ............................ 246
Tire pressure not reached .............. 249
Tire pressure reached .................... 249
Tires
Aspect rati o(definition) ................. 279
Average weight of the vehicle
occupants (definition) .................... 278
Bar (definition) ............................... 278
Changing awheel .......................... 280
Characteristics .............................. 278
Checking ........................................ 260
Curb weight (definition) ................. 279
Definition of terms ......................... 278
Directio nofrotation ...................... 280
Displa ymessage ............................ 196
Distribution of the vehicl eoccu-
pants (definition) ............................ 280
DOT (Department of Transporta-
tion) (definition) ............................. 278
DOT, Tire Identification Number
(TIN) ............................................... 277
GAW R(GrossA xle Weight Rating)
(definition) ..................................... 278
GV W( GrossV ehicleWeight) (def-
inition) ........................................... 279
GVWR (GrossV ehicleWeight Rat-
ing )(de finition) .............................. 279
Important safety notes .................. 260
Increased vehicl eweigh tdue to
optionale quipment (definition) ...... 278
Information on driving .................... 260
Kilopascal( kPa)(de finition) ........... 279
Labeling (overview) ........................ 275
Loadb earing index (definition) ...... 280
Loadi ndex ..................................... 277
Loadi ndex (definition) ................... 279
M+S tire s....................................... 262
18Index

ProblemPossible causes/consequences andMSolutions
The engine is not running
smoothly and is misfir-
ing.There isamalfunction in the engine electronics or in amechanical
componentoft he 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 aqualified specialist work-
shop.
The coolant temperature
gauge shows avalue
above 248 ‡(120 †).
The coolant warning
lamp may also be on and
aw arning tone may
sound.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 (Ypage 235). Observe the warning notes
as you do so and add coolant if necessary.
If the coolant level is correct,t he engine radiator fan may be faulty. The
coolant is too hot and the engine is no longer being cooled sufficiently.
XAt coolant temperatures below 248 ‡(120 †), drive to the nearest
qualified specialist workshop.
XAvoid heavy loads on the engine as you do so, e.g. driving in moun-
tainou sterrai nand stop-and-go traffic.
DYNAMIC SELEC Tbutton
Use the DYNAMIC SELECT button to change the
drive program. Depending on the drive program selected the following vehicle characteristics
wil lchange:
Rthe drive (engine and transmission manage-
ment)
Rthe suspensionort he adaptive adjustable
damping (only on vehicles with AMG RIDE
CONTROL sports suspension)
Rthe sound of the exhaust system (vehicles
with sports exhaust system)
Rthe steering
Rthe availability of the ECO start/stop function
Each time you start the engine with the Smart-
Key or the Start/Stop button, drive program Cis
activated. For further information about starting
the engine, see (
Ypag e117).
XPress DYNAMIC SELECT button :as many
times as necessary until the desired drive
programiss elected.
The selected drive programa ppears in the
multifunction display. After ashort period of
time, the displayg oes out and the symbol for
the selected drive programa ppears.
In addition, the current drive programs ettings
are displayed briefly in the multimedias ystem
display.
iIn af ew countries, the ECO start/stop func-
tion is deactivated at the factory due to the
available fuel grade. In this case, the ECO
start/stop function is not available in any
DYNAMICS ELECTbutton121
Driving and parking
Z

Coolanttemperatur egauge
GWARNING
Opening th ehood when th eengineiso ver-
heated or when there is afireint heengine
compartmen tcoul de xpose you to hot gases
or other servic eproducts. Thereisar isko f
injury.
Let an overheate denginec ooldown before
opening th ehood.Ift here is afireint he
enginec ompartment, keep th ehood closed
and contac tthe fired epartment.
!Ad isplay message is shown if th ecoolant
temperatur eistoohigh.
If th ecoolant temperatur eisover2 48 ‡
(12 0† ), do no tcontinue driving .The engine
will otherwise be damaged.
The coolant temperatur egage is in th einstru-
men tcluste ront heright-hands ide (
Ypage 32).
The Hmarkin ginthecoolant temperatur egauge
corresponds to acoolant temperatur eof
approximately 24 8‡(120† ).
Under normal operatin gconditionsa nd at the
correc tcoolant level, th ecoolant temperature
gauge may ris etotheHmarking.
Operatin gthe on-boar dcomputer
Overview
:Multifunction display
;Right control panel
=Leftc ontrol panel
XTo activate th eon-boar dcomputer: turn
th eS martKey to position 1in th eignition
lock.
You can control th emultifunction display and
th es ettings in th eon-board computer usingt he
buttons on th emultifunction steering wheel.
Left control panel
=
;RCalls up th emenua nd men ubar
9
:Press briefly:
RScroll sinlists
RSelect sasubmenuorf unction
RIn theAudiomenu: select sthe
previous or next station, when the
preset list or statio nlist is active,
or an audio track or vide oscene
RIn the Tel(telephone )menu:
switches to th ephoneb ook and
selects anam eort elephone num-
ber
164Displays and operation
On-boardc omputer and displays

XPress the:or9 button to select the
Auto. Mirror Foldingfunction.
If the Auto. Mirror Foldingfunction is
switched on, the multifunction display shows
the exterior mirror in orange.
XPress the abutton to save the setting.
Restoring the factor ysettings
XPress the =or; button on the steering
wheel to select the Sett.menu.
XPress the:or9 button to select the
Factory Settingsubmenu.
XPress ato confirm.
The Reset All Settings?function
appears.
XPress the :or9 button to select Noor
Yes.
XPress the abutton to confirm the selec-
tion.
If you have selected Yes
and confirmed, the
multifunction display shows aconfirmation
message.
For safety reasons, the Daytime Running
Lightsfunction in theLightssubmenu is only
reset if the vehicle is stationary.
AMG menu (Mercedes-AMG SLC 43)
Warm-up
:Digital speedometer
;Gear indicator
=Upshift indicator
?Engine oil temperature
ACoolant temperature
BTransmission oil temperature
XPress the =or; button on the steering
wheel to select the AMGmenu.
Upshift indicator: upshift indicatorUP=
indicates that the engine has reached the
overrevving range when in the manual drive
program. Engine and transmission oil temperature:
when the engine and transmission are at nor-
mal operating temperature, oil tempera-
ture
?and Bare displayed in white in the
multifunction display.
If the multifunction display shows oil temper-
ature ?orB in blue, the engine or the
transmission are not yet at normal operating
temperature. Avoid driving at full engine out-
put during this time.
SETUP
:Engine mode Eco/Comfort/Sport/
Sport +/Manual
;Steering Comfort/Sport
=ESP®On/Offor SPORT handling mode
Sport
SETU Pdisplays the following information, func-
tions and settings:
Rthe digital speedometer
Rthe gear indicator
Rthe engine mode
Rthe steerin gsetting
Rthe setting of the ECO start/stop function
Rthe ESP®(Electronic Stability Program) mode
XPress =or; on the steerin gwheel to
select the AMGmenu.
XPress9repeatedly until SETU Pappears.
RACE TIMER
Displaying and starting RACE TIMER
The RACE TIMER is only intended for use on a
closed race circuit. Do not use the function on
public roads.
Menus and submenus175
On-board computer and displays
Z

Warning/
indicator
lampNSignal type
Possiblec auses/consequences and M
Solutions
?NThe red coolant warning lamp comes on while the engine is running.
The coolant levelist oo low.
If the coolant levelisc orrect, the airflow to the engine radiator may be blocked or
the electric engine radiator fan may be defective.
The coolant is too hot and the engine is no longer being cooleds ufficiently.
XObserve the additionaldisplay messages in the multifunction display.
XPullover and stop the vehicles afelyand switch off the engine, paying attention
to road and traffic conditions.
XSecure the vehiclea gainst rolling away(Ypage131).
XLeave the vehiclea nd keepasafe distance from the vehicleu ntil the engine has
cooledd own.
XCheck the coolant levela nd add coolant, observing the warning notes
(Ypage2 35).
XIf you have to add coolant frequently, have the engine cooling system checked.
XMake sure that the air supply to the engine radiator is not blocked,e .g. by snow,
slush or ice.
XDo not start the engine again until the coolant temperature gauge is below the H
marking (Ypage1 64). Otherwise, the engine coul dbedamaged.
XDrive to the neares tqualified specialist workshop.
XAvoid heavy loads on the engine as you do so, e.g. driving in mountainous terrain
and stop-and-go traffic.
?N The red coolant warning lamp comes on while the engine is running.
The coolant temperature gauge has exceededt heHmarking (
Ypage1 64).The
airflow to the engine radiator may be blocked or the coolant levelm ay be too low.
GWARNING
The engine is not being cooleds ufficiently and may be damaged.
Do not drive when you rengine is overheated. This can caus esome fluids which
may have leaked into the engine compartment to catch fire.
Steam from the overheated engine can als ocaus eserious burns which can occur
just by opening the hood.
There is arisk of injury.
XObserve the additiona ldisplay messages in the multifunction display.
XPul lover and stop the vehicles afelyand switch off the engine, paying attention
to road and traffic conditions.
XSecure the vehiclea gainst rolling away(Ypage131).
XLeave the vehiclea nd keepasafe distance from the vehicleu ntil the engine has
cooledd own.
XCheck the coolant levela nd add coolant, observing the warning notes
(Ypage2 35).
XIf you have to add coolant frequently, have the engine cooling system checked.
XMake sure that the air supply to the engine radiator is not blocked,e .g. by snow,
slush or ice.
208Warning and indicator lamps
On-board computer and displays

Warning/
indicator
lampNSignal type
Possiblec auses/consequences and M
Solutions
XIf the coolant temperature gauge is below the Hmarking (Ypage1 64),drive on
to the next qualified specialist workshop.
XAvoid heavy loads on the engine as you do so, e.g. driving in mountainous terrain
and stop-and-go traffic.
Driving systems
Warning/
indicator
lampNSignal type
Possiblec auses/consequences and M
Solutions
·NThe red distance warning lamp lights up while the vehicleisinm otion.Awarning
tone als osounds.
You are approaching avehicle, apedestrian or astationary obstacl einyourline of
travel at too high aspeed.
XBe prepared to brake immediately.
XPay carefu lattention to the traffic situation. You may have to brake or take
evasive action.
Further information on Distance Pilot DISTRONIC (
Ypage1 40).
Further information on Active Brake Assist (
Ypag e58).
Warning and indicator lamps209
On-board computer and displays
Z

Workinginthe engine compartment poses a
risk of injury.
Where possible, let the engine cool down and touch only the componentsd escribed in the
following.
GWARNING
The cooling system is pressurized, particularly
when the motor is warm. If you open the cap,
you could be scalded if hot coolant sprays out.
There is arisk of injury.
Let the engine cool down before you open the
cap. Wear gloves and eye protection. Slowly
open the cap to relieve pressure.
Example
XPark the vehicle on alevel surface.
Only check the coolant level when the vehicle
is on alevel surface and the engine has cooled
down.
XTurn the SmartKey to position 2in the igni-
tion lock (Ypage 116).
On vehicles with KEYLESS-GO, press the
Start/Stop button twice (
Ypage 116).
XCheck the coolant temperature gage in the
multifunction display.
The coolant temperature must be below
158 ‡(70 †).
XTurn the SmartKey to position u
(Ypage 116) in the ignition lock.
XSlowly turn cap :half aturn anti-clockwise
to allow excessp ressure to escape.
XTurn cap;further counter-clockwise and
remove it.
If the coolant is at the level of marker bar =
in the filler neck when cold, there is enough
coolant in coolant expansion tank :.If the coolant level is approximately 0.6 in
(1.5 cm
)above marker bar =in the fuel filler
neck when warm, there is enough coolant in
expansion tank :.
XIf necessary, add coolant that has been tested
and approved by Mercedes-Benz.
XReplace cap;and turn it clockwise as far as
it will go.
Further information on coolant (
Ypage 293).
Windshield washer system
GWARNING
Certain component sinthe engine compart-
ment,s uch as the engine, radiator and parts
of the exhaust system, can become very hot.
Workin ginthe engine compartment poses a
risk of injury.
Where possible, let the engine cool down and touch only the componentsd escribed in the
following.
GWARNING
Windshield washer concentrate could ignite if it comes into contact with hot engine compo-
nents or the exhaust system. There is arisk of
fire and injury.
Make sure that no windshield washer con-
centrate is spilled next to the filler neck.
Example
XTo open: pull cap:upwards by the tab.
XAdd the premixed washer fluid.
XTo close: press cap :ontothe filler neck
until it engages.
If the washer fluid level drops below the recom-
mended minimum fluid level of 1USqt(1l iter),
236Engine compartment
Maintenance and care

Rseals
Rtrim
Rventilation slots
Damaged seals or electrical componentsc an
lead to leaks or failures.
!Do not use high-pressure cleaners if the
tank recess is open while you clean it. This
can cause damage to the seals or other com-
ponents.
Cleaning the paintwork
!Do not affix:
Rstickers
Rfilms
Rmagnetic plates or similar items
to painted surfaces. You could otherwise
damage the paintwork.
Scratches, corrosive deposits, areas affected by
corrosion and damage caused by inadequate
care cannot always be completely repaired. In
such cases, visit aqualified specialist workshop.
XRemove dirt immediately,w here possible,
while avoiding rubbing too hard.
XSoak insect remains with insect remover and
rinse off the treated areas afterwards.
XSoak bird droppings with water and rinse off
the treated areas afterwards.
XRemove coolant, brake fluid, tree resin, oils,
fuels and greases by rubbing gently with a
cloth soaked in petroleum ether or lighter
fluid.
XUse tar remover to remove tar stains.
XUse silicone remover to remove wax.
If water no longer forms "beads" on the paint
surface, use the paint care products recommen-
ded and approved by Mercedes-Benz.T his is the
case approximately every three to five months,
depending on the climate conditions and the
care product used.
If dirt has penetrated the paint surface or if the
paint has become dull,t he paint cleaner recom-
mended and approved by Mercedes-Benz
should be used.
Do not use these care products in the sun or on
the hood while the hood is hot.
XUse asuitable touch-up stick, e.g. MB Touch-
Up Stick,tor epair slight damage to the paint-
work quickly and provisionally.
Mattef inish care
!Never polish the vehicle or the light alloy
wheels. Polishing causes the finish to shine.
!The following can give the paint aglossy
appearance and thus reduce the matt effect:
RRubbing hard with unsuitable agents
RWashing the vehicle in direct sunlight
!Never use paint cleaner, buffing or polishing
products, or gloss preserver, e.g. wax, for the
purpose of paintwork care. These products
are only suitable for high-gloss surfaces. Their
use on vehicles with matte paintwork leads to
considerable surface damage or, more spe-
cifically,tos hiny, spotted areas.
Always have paintwork repairs carried out at a
qualified specialist workshop.
!Only use automatic car washes which cor-
respond to the latest technological stand-
ards. Never use wash programs which finish
by treating the vehicle with hot wax.
Observe these notes if your vehicle has aclear
matte finish. This will help you to avoid damage
to the paintwork due to incorrect treatment.
These notes also apply to light alloy wheels with
ac lear matte finish.
iUse only insect remover and car shampoo
from the range of recommended and
approved Mercedes-Benz care products.
Cleaning the decorative film
!The following may have an effect on the ser-
vice life and coloring of decorative film:
Rsunlight
Rtemperature, e.g. hot-air fan
Rweather conditions
Rstone impacts and dirt
Rchemical cleaning agents
Rgreasy substances
!Do not use any types of polish on matt dec-
orative film. Polishing surfaces covered with
film gives it ashiny finish.
!Do not treat matt or structured decorative
film with wax. This may lead to marks that
cannot be removed.
240Care
Maintenance and care