2018 MERCEDES-BENZ SLC ROADSTER technical data

ProblemPossible causes/consequences andMSolutions
Aside window cannot be
closed because it is
blocked by objects, e.g.
leaves in the window
guide.XRemove the objects.
XClose the side window.
As ide window cannot be
closed and you cannot
see the cause.If as ide window is obstructed during closing and reopens again
slightly:
XImmediately after the window blocks, pull the correspondings witch
again until the side window has closed.
The side window is closed with increased force.
If as ide window is obstructed again during closing and reopens again
slightly:
XImmediately after the window blocks, pull the correspondings witch
again until the side window has closed.
The side window is closed without the automatic reversing feature.
The side windows cannot
be opened or closed
using the convenience
opening/closing fea-
ture.The SmartKey battery is discharged or nearly discharged.
XCheck the SmartKey battery (Ypage 68) and replace it if necessary
(Ypage 68).
Roof
Important safety notes
GWARNING
If you do not fully open/close the soft top, the
soft-top hydraulics depressurize after ashort
time. This causes the soft top to lower unex-
pectedly and may cause you or others to be
trapped. There is arisk of injury.
Always open or close the soft top completely.
GWARNING
Closing the roof manually is acomplicated
and technically demanding procedure, which
requires alot of strength. You or others can
become trapped. There is arisk of injury.
Only have the soft top closed manually at a
qualified specialist workshop.
!Never sit on the rear shelf or store heavy
object sthere. You will otherwise damage the
roof and the rear shelf of your vehicle.
!Do not forget that the weather can change
abruptly. Make certain that the roof is closed
when you leave the vehicle. The vehicle elec-
tronics can be damaged if water enters the
vehicle interior.
!When opening and closing the roof, make
sure that:
Rthere is sufficient clearance, as the roof
swings upwards.
Rthere is sufficient clearance behind the
vehicle, as the trunk lid swings backwards
beyond the bumper.
Rthe trunk is only loaded to below the trunk
partition.
Rthe trunk partition is not pushed up by the
load.
Rthe trunk partition is closed.
Rthe trunk lid is closed.
Rthe outside temperature is above 5‡
(Ò15 †).
You could otherwise damage the roof, trunk
and other parts of the vehicle.
The vehicle dimensions for opening/closing the
roof can be found in the "Vehicle data" section
(
Ypage 295).
Roof77
Opening and closing
Z

Information regardingtechnicald ata
i
The dat astate dh eres pecifically refers to a
vehicl ewiths tandard equipment. Consult an
authorize dMercedes-Ben zCente rfor th e
dat afor all vehicl evariants and trim levels.
Vehicle electronics
Tampering with th eenginee lectron-
ics
!
Only hav eworkc arried out on th eengine
electronics and it sassociated parts, suc has
control units, sensors, actuating component s
and connecto rleads ,ataq ualified specialist
workshop. Vehicl ecom ponent smay other -
wise wear mor equickly and th evehicle's
operating permit may be invalidated.
Installing two-way radio sand mobile
phones (RF transmitters)
GWARNIN G
The electromagneti cradiation from two-way
radios can interfere wit hthe vehicl eelectron -
ics if two-way radios are manipulated or ret -
rofitte dincorrectly. This could jeopardiz ethe
operating safet yofthevehicle. Ther eisarisk
of an accident.
You should hav eall wor kone lectrical and
electronic component scarried out at aquali-
fie ds pecialist workshop.
GWARNIN G
If you incorrectl yoperate two-way radios in
th ev ehicle, th eelectromagneti cradiation
may interfere wit hthe vehicl eelectronics ,for
exampl eif:
Rthet wo-way radi oisnotconnecte dtoan
exterio rantenna
Rthee xter iora ntenna is no tcorrectly moun-
te dorisn otlow-reflection
This could jeopardiz ethe operating safet yof
th ev ehicle. Ther eisariskofana ccident.
Havethe low-reflection exterio rantenna
installed at aqualified specialist workshop.
Always connec ttwo-way radios to th elow-
reflection exterio rantenna when operating in
th ev ehicle.
!The operating permit may be invalidated if
th ei nstruction sfor installation and use of
two-way radios are no tobserved.
In particular, th efollowin gconditi onsm ust be
complied with:
Ronly approve dwavebands may be used
Robserv ethe maximum permissible output
in these wavebands
Ronly approve dantenna position smay be
used
Excessiv elevels of electromagneti cradiation
may caus edamag etoyour healt hand th ehealt h
of others. Using an exterio rantenna takes int o
accoun tcurren tscientific discussion srelating
to th epossible healt hhazards that may result
from electromagneti cfields.
The followin gantenna position smay be used if
RF transmitters hav ebeen properly installed:
Approved antenna position s
:
Rear fender
iOn th erear fenders, it is recommended to
position th eantenna on th eside of th evehicl e
closes ttothecenter of th eroad .
Use th eTechnical Specification ISO/TS 2160 9
when retrofitting RF transmitters (Road Vehicles
-E MC guidelines for installation of aftermarket
radi ofrequency transmitting equipment) .
Observ ethe legal requirements for accessory
parts.
If your vehicl ehas installation sfor two-way radi o
equipment, use th epower suppl yorantenna
connection sintended for use wit hthe basic wir-
288Vehicle electronics
Technical data

ing. Be sure to observe the manufacturer'sSup-
plementw hen installing.
Deviation swith respect to frequenc ybands,
maximum transmission output sorantenna
positions must be approved by Mercedes-Benz.
The maximum transmission output (PEAK) at the
base of the antenn amust not exceed the fol-
lowing values:
Frequency bandMaximum
transmission output
Short wave
3-54M Hz100 W
4mwaveband
74 -88M Hz30 W
2mwaveband
144 -174 MHz50 W
Trunked radio system/
Tetra
380 -460 MHz10 W
70 cm waveband
400 -460 MHz35 W
Mobile communications
(2G/3G/4G)10 W
The followingc an be used in the vehicle without
restrictions:
RRF transmitters with amaximum transmis-
sion output of up to 100 mW
RRF transmitters with transmitter frequencies
in the 380 -410 MHz wavebanda ndam axi-
mum transmission output of up to 2W
(trunked radio/Tetra)
RMobile phones (2G/3G/4G)
There are no restrictions when positionin gthe
antenn aonthe outside of the vehicle for the
followingw avebands:
RTrunked radio system/Tetra
R70 cm waveband
R2G/3G/4G
Identification plates
Vehicle identification plate with vehi-
cle identification number (VIN)
XOpen the driver's door.
You will see vehicle identification plate :.
Example: vehicle identification plate (USA only)
:
VIN
;Vehicle model
Example: vehicle identification plate (Canada only)
:
VIN
;Paint code
iThe data shown on the vehicle identification
plate is used only as an example. This data is
differentf or everyvehicle and can deviate
Identification plates289
Technicald ata
Z

from the data shownhere. You can find the
data applicable to you rvehicleont he vehicle
identificatio nplate.
Vehicle identification number (VIN)
XSlid ethe front-passenger seattoi ts front
most position.
XFold trim :upwards.
VIN ;can be seen.
The VIN can als obefound in the following loca-
tions:
Ron the vehiclei dentificationplate
(Ypag e289)
Ron the lower edge of the windshield
(Ypag e290)
Engine number
:Emissionc ontrol information plate, includ-
ing the certification of both federala nd Cali-
forniane missions standards
;Engine numbe r(stamped into the crank-
case)
=VIN (on the lower edge of the windshield)
Service products and filling capaci-
ties
Important safety notes
GWARNING
Service products may be poisonousa nd haz-
ardous to health. There is arisk of injury.
Comply with instructions on the use ,storage
and disposal of service products on the labels
of the respective original containers. Always
store service products sealed in their original
containers. Always keep service products out
of the reach of children.
HEnvironmental note
Disposeofs ervice products in an environ-
mentall yresponsiblem anner.
Service products include the following:
RFuels
RLubricants (e.g. engine oil,t ransmission oil)
RCoolant
RBrake fluid
RWindshieldwasher fluid
RClimate control syste mrefrigerant
Comply with all vali dregulations with respect to
handling, storing, and disposing of service flu-
ids.
Components and service products must match.
You should therefore only use products that
have been tested and approved by Mercedes-
Benz.
Informatio nabout tested and approved prod-
ucts can be obtained from an authorized
Mercedes-Benz Center or on the Internet at
http://bevo.mercedes-benz.com.
You can identify service products approved by
Mercedes-Benz by the following inscriptions on
the container:
RMB-Freigabe (e.g. MB-Freigabe 229.51)
RMB-Approval( e.g. MB-Approval2 29.51)
Other designations or recommendations indi-
cate alevelofq uality or aspecificatio nin
accordance with an MB Sheet Number (e.g. MB
229.51). They have not necessarily been
approved by Mercedes-Benz.
290Service products and filling capacities
Technical data

Other identifications, for example:
R0W-30
R5W-30
R5W-40
Fuel
Important safety notes
GWARNING
Fuel is highly flammable. Improper handling of
fuel creates arisk of fire and explosion.
Avoid fire, open flames, smoking and creating
sparks under all circumstances. Switch off the
engine and, if applicable, the auxiliary heating
before refueling.
GWARNING
Fuel is poisonous and hazardous to health.
There is arisk of injury.
You must make sure that fuel does not come into contact with your skin, eyes or clothing
and that it is not swallowed. Do not inhale fuel
vapors. Keep fuel awayf rom children.
If you or others come into contact with fuel,
observe the following:
RWash awayf uel from skin immediately
using soap and water.
RIf fuel comes into contact with your eyes,
immediately rinse them thoroughly with
clean water. Seek medical assistance with-
out delay.
RIf fuel is swallowed, seek medical assis-
tance without delay.Don ot induce vomit-
ing.
RImmediately change out of clothing which
has come into contact with fuel.
Tank capacity
ModelTotal capa- city
SLC 30018.5 US gal(70.0 l)
Mercedes‑AM Gvehicles15.8 US gal
(60.0 l)
ModelOf which
reserve
SLC 300Approx.
2.4 US gal (9.0 l)
Mercedes‑AM GvehiclesApprox.
2.1 US gal (8.0 l)
Gasoline
Fuel grade
!Do not use diesel to refue lvehicles with a
gasoline engine. Do not switch on the ignition
if you accidentally refue lwith the wrong fuel.
Otherwise, the fuel wille nter the fuel system.
Even smal lamounts of the wrong fuel could
resul tind amage to the fuel system and the
engine. Notify aqualified specialist workshop
and have the fuel tank and fuel lines drained
completely.
!Only refue lusing unleaded premium grade
gasoline with at least 91 AKI/95 RON.
iE10 fuel contains up to 10% bioethanol.
Yourv ehicleisE 10-compatible. You can
refue lyou rv ehicleu sing E10 fuel.
!Only use the fuel recommended. Operating
the vehiclew ith other fuelscan leadtod am-
age to the fuel system, engine and exhaust
system.
!Do not use the following:
RGasoline with more than 10% ethanol
RE100 (100% ethanol)
RGasoline with methanol
RM100 (100% methanol)
RGasoline with metalliferous additives
RDiesel
Service products and fillingc apacities291
Technical data
Z

Do not mix such fuelswitht he fuel recom-
mended for your vehicle.
!To ensur ethe longevity and full perform-
ance of the engine ,onlyp remium-grade
unleade dgasoline must be used.
If standard unleade dgasoline is unavailable
and yo uhavetor efuelwithu nleade dgasoline
of alower grade ,observe the following pre-
cautions:
ROnlyf illt he fuel tank to half full with regular
unleade dgasoline and fil lthe res twithp re-
mium-grad eunleade dgasoline as soo nas
possible.
RDo not drive at the maximum speed.
RAvoi dsudde nacceleratio nand engine
speeds ove r3,000 rpm.
Yo uw illu sually find informatio nabout the fuel
grade on the fuel pump. If yo ucanno tfind the
labe lont he fuel pump, as kthe gass tationstaff.
iFor furtheri nformation, consul taqualified
specialis tworkshop or visit
http://www.mbusa.com (USA only).
As atemporary measure, if the recommended
fuel is not available, yo umayalso us eregular
unleade dgasoline with an octane rating of
87 AKI /91 RON .Thism ay reduc eenginep er-
formance an dincre asef ue lconsu mption. Avoid
drivin gatfullt hrottle and sudden acceleration.
Never refu
e
lusing gasoline with alower AKI.
iThe fuel syou can us einyourv ehicl emay
differf romthe information in the Operator's
Manua ldepen ding on the country.T he fuels
thath aveb eena pproved for your vehicl ecan
be found on the instructio nlabel on the inside
of the fuel fille rflap.
Informatio nonrefueling (
Ypage 130).
Additivesing asoline
!Operating the engine with fuel additives
adde dlater can lead to engine failure. Do not
mixf ueladdit ivesw ithf uel. Thisd oesn ot
includ eaddit ivesfor the remova land preven-
tio nofr esidue buildup. gasoline must onl ybe
mixed with additive srecommende dby
Mercedes-Benz. Compl ywitht he instructions
for us eonthe product label. Mor einformation
abou trecommende daddit ivesc an be
obtained froma ny authorizedMercedes-Benz
Center. Mercedes-Benz recommends thaty
ouuseb ran-
de df uels thath avea ddit ives.
The fuel quality availabl einsomecountries may
not be sufficient. Residu ecould buil dupinthe
fuel injectio nsystemasa result. In such cases,
and in consultation with an authorized
Mercedes-Benz Center, the fuel maybem ixed
wit hthe cleaning additive reco mmend
e
dby
Mercedes-Benz. Yo umusto bser ve the notes
and mixing ratio sspecifie dont he container.
Engine oil
General notes
!Do not us eengine oi lorano ilfilter with
specifications deviating fromt hoseexpressly
required for the prescribe dservice intervals.
Do not change the engine oi loroilfilter in
order to setr eplacement intervals longert han
thos eprescribed. Thi scould otherwis ecause
damage to the engine or exhaust ga safter-
treatment.
Follo wthe instructions on the service interval
displa yfor changing the engine oil. Thi scould
otherwis ecause damage to the engine or
exhaust ga saftertreatment.
When handling engine oil, observe the important
safety note sonservice products (
Ypage 290).
The engine oils ar ematchedtot he performance
of Mercedes-Benz engine sand service intervals.
Yo us houl dtherefore onl yuseengine oils and oil
filters thata reapproved for vehicles with main-
tenance systems.
For alistofa pproved engine oils and oi lfilters,
consul tanauthorize dMercedes-Benz Center.
Or visit the website
http://bevo.mercedes-benz.co m.
The table shows which engine oils have been
approved for your vehicle.
292Service products and filling capacities
Technical data

ModelMB-Freigabe orMB-Approval
All models229.5
iMB approval is indicated on the oil contain-
ers.
Fillingc apacities
The following values refer to an oil change
including the oil filter.
ModelCapacity
SLC 3006.7 US qt (6.3 l)
Mercedes-AMG
SLC 436.9 US qt (6.5l)
Additives
!Do not us eany additive sinthe engine oil.
Thisc ould damag ethe engine.
Brake fluid
GWARNING
The brake fluid constantly absorbsm oisture
from the air. Thisl owersthe boiling point of
the brake fluid .Ifthe boiling point of the brake
fluid is too low, vapor pockets may form in the
brake system when the brakes are applied
hard. Thisw ouldimpai rbraking efficiency.
There is ariskofana ccident.
Yo us houl dhavet he brake fluid renewe dat
the specified intervals.
Whe nhandling brake fluid ,observe the impor-
tant safety notes on service products
(
Ypage 290).
The brake fluid change interval scan be found in
the Maintenance Booklet.
Only us ebrake fluid approved by Mercedes-
Benz in accordance with MB-Freigab eorMB-
Approval3 31.0.
Information abouta pproved brake fluid can be
obtaine datany qualified specialist workshopo r
on the Interneta t
http://bevo.mercedes-benz.co m.
iHave the brake fluid regularly replaced at a
qualified specialist workshop and the replace-
ment confirmed in the Maintenance Booklet.
Coolant
Importan tsafety notes
GWARNING
If antifreeze comes into contact with hot com- ponents in the engine compartment, it may
ignite. There is arisk of fire and injury.
Let the engine cool downb efore youadd anti-
freeze.M ake surethat antifreeze is not spilled
next to the filler neck. Thoroughly clea nthe
antifreeze from components before starting
the engine.
!Only ad dcoolant that has beenp remixed
with the desire dantifreeze protection. You
coul dotherwise damag ethe engine.
Furthe rinformatio noncoolants can be found
in the Mercedes-Benz Specifications for Ser-
vice Products, MB BeVo 310.1, e.g. on the
Internet at
http://bevo.mercedes-benz.com.Orc on-
tact aqualifie dspecialist workshop.
!Always use asuitabl ecoolant mixture, even
in countries where hig htemperatures prevail.
Otherwise ,the engine cooling system is not
sufficiently protected from corrosion and
overheating.
iHave the coolant regularly replaced at a
qualified specialist workshop and the replace-
ment confirmed in the Maintenance Booklet.
Comply with the important safety precautions
for service products whe nhandling coolant
(
Ypage 290).
The coolant is amixture of water and anti-
freeze/corrosion inhibitor. It is responsible for
the following:
Ranti-corrosion protection
Rantifreeze protection
Rraising the boiling point
If the coolant has antifreeze protection downt o
-35 ‡(-37† ), the boiling point of the coolant
during operation is approximatel y266 ‡
(130 †).
Service products and filling capacities293
Technical data
Z

The antifreeze/corrosion inhibitor concentra-
tion in the engine cooling system should:
Rbe at least 50%. This will protectthe engine
cooling system against freezin gdown to
approximately -35 ‡(-37 †).
Rnot exceed 55% (antifreez eprotection down
to -49 ‡[-45 †]). Otherwise, heat will not be
dissipated as effectively
If the vehicle has lost coolant, add equal
amounts of water and antifreeze/corrosion
inhibitor.
Mercedes-Benz recommends an antifreeze/
corrosion inhibitor concentrate in accordance
with MB Specifications for ServiceP roducts
310.1.
iWhen the vehicle is first delivered, it is filled
with acoolant mixture that ensures adequate
antifreeze and anti-corrosion protection.
iThe coolant is checked with every mainte-
nancei nterval at aqualified specialist work-
shop.
Fillingc apacities
Missing values were not availableatt ime of
going to print.
ModelCapacity
SLC 300Approx.8 .5 US qt
(8.0 l)
Mercedes ‑Benz
SLC 43 AMGApprox.8 .2 US qt
(7.8 l)
Windshield washer system
Important safety notes
GWARNING
Windshield washer concentrate could ignite if it comes into contact with hot engine compo-
nentsort he exhaust system. There is arisk of
fire and injury.
Make sure that no windshield washer con-
centrate is spilled next to the filler neck.
!Only use washer fluid that is suitable for
plastic lamp lenses, e.g. MB SummerFit or MB WinterFit. Unsuitable washer fluid could dam-
age the plastic lenses of the headlamps.
!Only MB SummerFit and MB WinterFit
washer fluid should be mixed together. The
spray nozzles may otherwise become
blocked.
Do not use distilled or de-ionised water. Other-
wise, the level sensor may give afalse reading.
When handling washer fluid, observe the impor-
tant safety notes on service products
(
Ypage 290).
At temperatures above freezing:
XFill the washer fluid reservoir with amixture of
water and windshield washer fluid, e.g. MB
SummerFit.
XAdd 1part MB SummerFit to 100 parts water.
At temperatures below freezing:
XFill the washer fluid reservoir with amixture of
water and washer fluid, e.g. MB WinterFit.
For the correctm ixing ratio refer to the infor-
mation on the antifreeze reservoir.
iAdd windshield washer fluid, e.g. MB Sum-
merFit or MB WinterFit, to the washer fluid all
year round.
Climate control system refrigerant
Important safety notes
The climate control system of your vehicle is fil-
led with refrigerant R‑ 134a.
The instruction label regarding the refrigerant
type used can be found on the radiator cross
member.
!Only the refrigerant R‑134a and the PAG oil
approved by Mercedes-Benz may be used.
The approved PAG oil may not be mixed with
any other PAG oil that is not approved for
R-134a refrigerant.O therwise, the climate
control system may be damaged.
Servicew ork, such as refilling with refrigerant or
replacing component parts, may only be carried
out by aqualified specialist workshop. All appli-
cable regulations, as well as SAE standard J639,
must be adhered to.
Always have work on the climate control system
carried out at aqualified specialist workshop.
294Service products and filling capacities
Technical data