2018 MERCEDES-BENZ SLC ROADSTER sensor

Important safety notes
The tire pressurewarning system does no twarn
you of an incorrectl yset tire pressure. Observ e
th en otes on th erecommended tire pressur e
(
Ypage 263).
The tire pressur eloss warning does no treplace
th en eedtor egularly chec kthe tire pressure. An
eve nloss of pressur eonseveral tires at th e
sam etimec anno tbed etecte dbythetire pres-
sur eloss warning system.
The tire pressur emonitor is no table to warn you
of as udde nloss of pressure, e.g. if th etirei s
penetrated by aforeign object. In th eevent of a
sudde nloss of pressure, brin gthe vehicl etoa
halt by braking carefully. Avoid abrup tsteering
movements.
The function of th etirep ressur eloss warning
system is limite dordelayedif:
Rsnow chain sare mounte donyour vehicle's
tires .
Rroad condition sare wintry.
Ryou are driving on san dorgravel.
Ryou adopt averys port ydriving style (corner-
ing at high speeds or driving wit hhigh rates of
acceleration).
Ryou driv ewithah eavyload.
Restarting th etirep ressure loss warn-
ing system
Restart th etirep ressur eloss warning system if
you have :
Rchanged th etirep ressur e
Rchanged th ewheels or tires
Rmounte dnew wheels or tires
XBefore restarting ,makes uret hatthe tire
pressures are set properly on all four tires for
th er espective operating conditions.
The recommended tire pressur ecan be foun d
on th eTirea nd Loading Information placard
on th eB-pillar .Additionally, atirep ressur e
table is attached to th efuel filler flap .The tire
pressur eloss warning system can only giv e
reliable warning sifyou have set th ecorrect
tire pressure. If an incorrec ttirep ressur eis
set ,the se incorrec tvalue swill be monitored.
XAlsoo bserv ethe note sint hesection on tire
pressures (Ypage 263).
XMakesuret ha tthe SmartKey is in position 2
in th eignition loc k(Ypage 116).
XPress the= or; buttononthesteering
whee ltos elect th eServ.menu.
XPress th e9 or: buttontos elect
Tir ePressure.
XPress th ea button.
The Run Fla tIndicator Active Press
'OK'toR estartmessage appear sinthe
multifunction display.
If you wish to confirm th erestart :
XPress th ea button.
The TirePressure Now OK?message
appear sinthemultifunction display.
XPress th e9 or: buttontos electYes.
XPress th ea button.
The Run Fla tIndicator Restartedmes -
sage appear sinthemultifunction display.
Afte rateach-in period, th etirep ressur eloss
warning system will monitor th eset tire pres-
sures of all four tires .
If you wish to cancel th erestart :
XPress th e% button.
or
XIf th eTir ePressure Now OK?message
appears, use th e9 or: buttonto
select Cancel
.
XPress th ea button.
The tire pressur evalue sstoredatt helast
restar twill continue to be monitored.
Tire pressure monitor
General notes
If at irep ressur emonitor is installed, th evehi-
cle's wheels hav esensor sthatm onitor th etire
pressures in all four tires .The tire pressur emon-
itor warn syou if th epressur edrops in on eor
mor eoft hetires .The tire pressur emonitor only
function sifthecorresponding sensor sare
installed in all wheels.
Information on tire pressures is displayed in th e
multifunction display. Afte rafew minute sof
driving ,the curren ttirep ressur eofeacht irei s
shown in th eServ.
men uoft hemultifunction
display.
Tire pressure267
Wheels and tires
Z

The tire pressure monitor hasayellow warning
lamp in the instrument cluster for indicating
pressure loss or amalfunction. Whether the
warning lamp flashes or lights up indicates
whether atire pressure is too low or the tire
pressure monitor is malfunctioning:
Rif the warning lamp is lit continuously, the tire
pressure on one or more tires is significantly
too low. The tire pressure monitor is not mal- functioning.
Rif the warning lamp flashes for approximately
am inute and then remains lit constantly, the
tire pressure monitor is malfunctioning.
In addition to the warning lamp, amessage
appears in the multifunction display.O bserve
the information on display messages
(
Ypage 196).
It may take up to ten minutes for amalfunction
of the tire pressure monitor to be indicated. A
malfunction will be indicated by the tire pres-
sure warning lamp flashing for approximately
one minute and then remaining lit. When the
malfunction has been rectified, the tire pressure
warning lamp goes out after afew minutes of
driving.
The tire pressure values indicated by the on-
board computer may differ from those meas-
ured at agas station with apressure gage. The
tire pressures shown by the on-board computer
refer to those measured at sea level. At high
altitudes, the tire pressure values indicated by a pressure gage are higher than those shown by
the on-board computer. In this case, do not
reduce the tire pressures.
The operation of the tire pressure monitor can
be affected by interferenc efrom radio transmit-
ting equipment (e.g. radio headphones, two-way
radios) that may be being operated in or near the vehicle.
Checking the tire pressur eelectroni-
cally
XMake sure that the SmartKey is in position 2
(Ypage 116) in the ignition lock.
XPress the =or; button on the steering
wheel to select the Serv.menu.
XPress the9or: button to select
Tire Pressure.
XPress a.
The current tire pressure of each tire is shown
in the multifunction display. If the vehicle has been parked for over
20 minutes, the
Tire pressure will be
displayed after driving afew minutesmessage appears.
After ateach-in process, the tire pressure mon-
itor automatically detect snew wheels or new
sensors. As long as aclear allocation of the tire
pressure value to the individual wheels is not
possible, the Tire
PressureMonitorActivedisplay message is shown instead of the tire
pressure display.T he tire pressures are already
being monitored.
If an emergencys pare wheel is mounted, the
system may continue to show the tire pressure
of the wheel that has been removed for afew
minutes. Be aware that the value displayed for
the position where the emergencys pare wheel
is fitted is not the same as the current tire pres-
sure of the emergencys pare wheel.
Tire pressuremonitor warning mes-
sages
The tire pressure monitor detect sapressure
loss in one or more tires:
RIf the tire pressure monitor detect sapressure
loss in one or more tires, awarning message
is shown in the multifunction display.T he yel-
low tire pressure warning lamp then lights up.
RIf the Please Correct Tire Pressuremessage appears in the multifunction display,
the tire pressure in at least one tire is too low.
The tire pressure must be corrected when the
opportunit yarises.
RIf the Check Tiresmessage appears in the
multifunction display,t he tire pressure in at
least one tire has dropped significantly. The
tires must be checked.
RIf the WarningTireMalfunctionmessage
appears in the multifunction display,t he tire
pressure in at least one tire has dropped sud-
denly. The tires must be checked.
Observe the instructions and safety notes in the
display messages in the "Tires" section
(
Ypage 196).
If the wheel positions on the vehicle are rotated,
the tire pressures may be displayed for the
wrong positions for ashort time. This is rectified
after afew minutes of driving, and the tire pres-
sures are displayed for the correctp ositions.
Tirepressure269
Wheels and tires
Z

XClean thewheel and wheel hub contact sur-
faces.
XSlid ethe wheel to bemounte dontot he align-
men tbolt and push iton.
XTighte nthe wheel boltsuntilthey are finger-
tight.
XUnscrew th ealignmen tbolt.
XTighte nthe last wheel boltuntil it is finger-
tight.
XVehicles with acollapsible spa rewheel:
inflate th ecollapsible sparewheel
(
Ypage 286).
Only then lower th evehicle .
Lowering th evehicle
GWAR NING
The wheelsc ouldwork looseift hewheel nuts
and boltsare no ttightened to th especifie d
tightening torque. Thereisar iskofa cciden t.
Hav ethe tightening torque immediately
checked at aqualified specialist workshop
after awheel ischanged.
!Vehicles with acollapsible spa rewheel:
before lowering th evehicle ,inflate th ecol-
lapsible sparewheelwiththe tirei nflation
compressor. The wheel rim could otherwise
be damaged.
XTurn th ecrank of th ejackc ounter-clock wise
unt ilth ev ehicle is once again standing firmly
on th eground.
XPlacet hejacktoo neside.
XTighte nthe wheel boltse venlyinac rosswise
pattern inthes equenc eindicated (: toA).
The specifie dtightening torque is 96lb-ft
(1 30 Nm) .
XTurn th ejackb ack to its initial position.
XStow th ejac ka nd th erestoft hevehicle tools
in thet runk again.
XVehicles with AMG equipment: insert the
cover int othe outer sill.
XCheckt hetirep ressureoft henewly mounted
wheel and adjust it if necessary.
Observ ethe recommended tir epressure
(
Ypage 263).
When you are driving withthe collapsible spare
wheel mounte d,thet irep ressurel oss warning
system or th etirep ressurem onitorcanno tfunc-
tio nr eliably. Only restartthe tirep ressurel oss
warning system or tir epressurem onitorwhen
th ed efective wheel has been replace dwitha
ne ww heel.
Vehicles with atirep ressure control sys-
tem: all installed wheelsm ust be equippedwith
functioning sensors.
Wheel and tir ecombinations
You can ask for informatio nregardin gpermitted
wheel/t ire combinations at an authorized
Mercedes-Ben zCenter.
!For safety reasons, Mercedes-Ben zrecom-
men dsthat you only use tires and wheels
whichh ave been approvedbyM ercedes-Benz
specifically for your vehicle.
284Wheel and tir ecombinations
Wheels and tires

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

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