2020 MERCEDES-BENZ SLC ROADSTER jump start

Important
safetynotes.................. 258
Jump starting .................................2 61
Overvi ew....... ................................. 258
Rep lacing .......................................261
Belt
see Seat belts
Belt warni ng....... .................................. 42
Blin dSpot Assist
Activating/d eactivating .................176
Displ aymessa ge....... ..................... 199
Notes/fu nction..............................164
Blueto oth®
Searchi ngfor am obilephone ........222
Searchi ngfor am obilephone
(de vice mana ger)........................... 223
see also Digita lOpera tor's Man-
ua l....... ....... ....... .............................218
Tel epho ny....... ....... ........................222
Brake AssistSyste m
see BAS (Brake AssistSystem)
Brake fluid
Displ aymessa ge....... ..................... 189
Notes .............. ...............................302
Brake forcedistributi on
see EBD (electronic brakeforce
dis tribu tion)
Brake lamps
Adap tive....... ....................................60
Dis play mes sage ............ ................194
Brake s
ABS ............ ........................ ..............57
Ada ptive Bra keAssi st............ .......... 59
BAS ............ ............ ..........................57
Bra kefluid(no tes)............ ............ .302
Displ aymessa ge....... ..................... 184
EBD .............. ....................................63
High -perfo rmance brakesystem ....141
Impo rtant safety notes ............ ......139
Mai ntenance .................................. 140
Pa rking brake............ ....................135
Ri ding tips............ ............ ..............139
Wa rning lamp ............ .....................211
Breakdo wnassi stanc e
Re flective safety jacket ............ ......252
Whe rewillIf ind...? ............ ............ 252
see Flattire
see Towingaway Brightn
esscontrol (instrumen t
cl uster lightin g)........... ........................32
Bulbs
see Repla cing bulbs C
Cal ifornia
Impo rtant notice forreta ilcus-
tomers andlessee s........... ........... ....24
Cal ling up am alfun ction
see Disp laym essages
Car
see Vehi cle
Care
Carw ash. .......... ........... ..................247
Exhau stpip e........... ........... ............251
Exterior lights ....... ......................... 250
Matte finish................................... 249
Notes .............................................246
Pai nt....... ....................................... 248
Pow erwa sher ................................248
Rea rview camera .......................... 251
Sensors ......................................... 251
Was hing byhand ........................... 247
Whee ls....... ....................................250
Windo ws....... ................................. 250
Wip erbla des ....... ........................... 250
CD
see also Digita lOpera tor's Man-
ua l....... ....... ....................................218
CD player (on-bo ardcomputer) ........174
Ce nter conso le
Lowe rsection .................................. 35
Uppe rsection .................................. 34
Ce ntral locking
Automa ticlocking (on-board
compu ter)....... ...............................179
Locking/u nlocking(SmartKe y)....... .66
Cha nging bulbs
Sid em arkerlamps (rear)...... ......... 103
Child
Rest raintsyst em .............................. 55
Child seat
For ward- facing restraint system...... 56
On thef ront-pa sse nger seat ............ 56
Rearwar d-facin grestraint system.... 56 6
Index

Fus
eboxinthe trunk ................ .....267
Impo rtant safety notes ................ ..266 G
Garage dooropener
Cl ea ring thememo ry................ .....238
Ge nera lnotes ................ ................ 235
Impo rtant safety notes ................ ..236
Ope ning/cl osing the garag edoor..2 38
Prob lems whe nprog ramm ing........ 237
Prog ramm ing(button inthe rear-
vie wm irror) ................ ...................236
Synchr onizingthe rolling code ....... 236
Gear indicato r(on -bo ard com-
puter, Mercedes-AMG SLC 43)......... 180
Gen uineparts ................ ......................23
Glo vebox................ ...........................226
Goo gle™ Local Sea rch
see also Digi talOpe rator'sMan-
ua l................ ................ ..................218 H
Harmful substances
Informa tion................ ......................26
Hazard warninglamps
Disp laym essage. ............... ............207
Swi tching on/off ................ .............. 99
Head bags
Disp laym essage. ............... ............191
Ope ration................ .........................45
Head level heati ng(AIRS CARF) .......... 89
Head restrai nts
Adjus ting................ .........................87
see NECK-P ROhea drestra ints
Headl amps
see Automa tichea dlamp mode
Heati ng
see Clima tecontrol
Hig hbeamf lasher ................ ............... 99
Hig h-be amheadl amps
Disp laym essage. ............... ............194
Re placi ng bulbs. <0011001100110011001100110011001100110011001100110011001100110011
001100110011001100110011001100110011001100110011[ 103
Swi tching on/off.<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011[ 99
Hil lstart assist<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
00110011> 120
HOL Dfunc tion
Activa ting<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011> 152Activa
tioncondi tions <0011001100110011001100110011001100110011001100110011001100110011
00110011001100110011[ 152
Dea ctiva ting<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
001100110011> 152
Disp laym essage <0011001100110011001100110011001100110011001100110011001100110011
001100110011001100110011001100110011001100110011[ 198
Ge nera lnotes <0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011[ 152
Home addres s
see also Digi talOpe rator'sMan-
ua l.<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
0011[ 218
Hoo d
Cl osi ng <0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
00110011001100110011001100110011001100110011> 242
Disp laym essage <0011001100110011001100110011001100110011001100110011001100110011
001100110011001100110011001100110011001100110011[ 206
Imp orta ntsafety notes <0011001100110011001100110011001100110011001100110011001100110011
00110011[ 241
Ope ning <0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
001100110011001100110011001100110011> 241
Horn <0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
001100110011001100110011[ 31
Hydro planing<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
00110011001100110011> 141 I
Ig nitio nlock
see Key positions
Immo bilizer <0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011> 64
In dic ator lamps
see Warning andindicator lamps
In dic ators
see Turn sig nal s
In strume ntcluste r
Ove rview <0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011> 32
In strume ntcluste rlighti ng .............. 168
In teri orlighti ng
Auto maticcontrol <0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011[ 101
Del ayed switch-o ff(on-boa rd
comp uter)<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
001100110011001100110011> 178
Re ading lamp <0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
0011> 101
Setting thebrightne ssofthe
amb ient lighti ng(on-boa rdcom-
pu ter) <0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011> 178
iP od ®
see also Digi talOpe rator'sMan-
ua l.<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
0011[ 218 J
Jac k
Stora gelocati on<0011001100110011001100110011001100110011001100110011001100110011
001100110011001100110011001100110011001100110011[ 253
Usi ng<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011> 291
Jump starting(eng ine) <0011001100110011001100110011001100110011001100110011001100110011
001100110011001100110011[ 261 In
dex
11

Problem
Possible
causes/co nsequences and0050 0050
Solutions The
engine cannot be
started usingtheSmart-
Key. The
on-board voltageistoo low.
X Switch offnon- essential consumers, e.g.seat heating orinterior
lighting, andtrytostart theengine again.
If this does notwork:
X Check thestarter battery andcharge itifnecessary
(Y page 260).
or
X Jump-start thevehicle (Ypage 261).
or
X Consult aquali fied specialist workshop. The
engine cannot be
started usingKEYLE SS-
GO. TheSmartK eyisin
the vehicle. The
vehicle islocked.
X Unlock thevehicle andtrytostart thevehicle again. The
SmartK eybattery isdischarged ornearly discharged.
X Check theSmartK eybattery (Ypage 69)and replace itifneces-
sary (Ypage 69).
If this does notwork:
X Start yourvehicle withtheSmartK eyinthe ignition lock. There
isinterf erence fromapowerful sourceofradio waves.
X Start yourvehicle withtheSmartK eyinthe ignition lock. You
have lostaSmart-
Key. X
Have theSmartK eydeactivated ataq ualified specialist work-
shop.
X Report theloss immediately tothe vehicle insurers.
X Ifnecessary, havethelocks changed aswell. You
have lostthe
mechanical key. X
Report theloss immediately tothe vehicle insurers.
X Ifnecessary, havethelocks changed aswell. The
side windows can-
not beopened orclosed
using theconven ience
opening/c losingfea-
ture. The
SmartK eybattery isdischarged ornearly discharged.
X Check theSmartK eybattery (Ypage 69)and replace itifneces-
sary (Ypage 69). Doo
rs Import
antsafety notes G
WARNING
If children areleft unsupervised inthe vehi-
cle, they could:
R operate thevehicle's equipment Additionally,
childrencouldsetthe vehicle in
motion if,for example, they:
R release theparking brake
R shift theautomatic transmission outof
park position 005D
R start theengine
There isar isk ofan accident andinjury. Doo
rs
71Opening andclosing
Z

Problems
withtheengine Problem
Possible
causes/co nsequences and0050 0050
Solutions The
engine doesnot
start. The
HOLD functionorAct ive Distanc eAssist DISTRONIC isactiva-
ted.
X Deactivat ethe HOLD function(Ypage 152)orAct ive Distanc e
Assist DISTRONIC (Ypage 150).
X Try tostart theengine again. The
engine doesnot
start. Thestarter motor
can beheard. R
There isam alfunction inthe engine electron ics.
R There isam alfunction inthe fuel supply .
Before attempt ingtostart theengine again:
X Turn theSmartK eyback toposition 0092inthe ignition lock.
or X Press theStart /Stopbutton repeatedly untilallindicator lampsin
the instrumen tcluster goout.
X Try tostart theengine again(Ypage 119). Avoid excessively long
and frequent attemptstos tart theengine asthese willdrain the
battery.
If the engine doesnotstart after several attempt s:
X Consult aquali fied specialist workshop. The
engine doesnot
start. Youcannot hear
the starter motor. The
on-board voltageistoo low because thebattery istoo weak or
discharged.
X Jump-start thevehicle (Ypage 261).
If the engine doesnotstart despite attemptstoj ump-st artit:
X Consult aquali fied specialist workshop. The
starter motorwasexposed toathermal loadthatwastoohigh.
X Allow thestarter motortocool down forapproximately two
minutes.
X Try tostart theengine again.
If the engine stilldoes notstart:
X Consult aquali fied specialist workshop. The
engine isnot run-
ning smoothly andis
misfiring. There
isam alfunction inthe engine electron icsorinam echanical
componen tofthe engine management system.
X Only depress theaccelerator pedalslightly.
Otherwise, non-combusted fuelmay getinto thecatalytic con-
verter anddamage it.
X Have thecause rectified immediately ataq uali fied specialist
workshop. Driving
123Drivingandparking Z

Battery
acidisc austic. Avoid con-
tact with skin, eyes orcloth ing.
Wea rsuitabl eprote ctive clothing,
esp ecia llyg loves, apron and face-
gu ard .
Ri nse anyacids pillsi mme diatel y
wi th clea rwater. Contact aphysi-
cia nifn eces sary. Wea
reye prote ction. Kee
pchildre naway. Obs
erve thisOperator'sManu al.
For safety reasons, Merce des-Benz recom -
mends thatyouo nly use batterie swhich hav e
bee ntested andapprov edfor your vehi cleby
Merce des-Benz. Thesebatterie sprov ide
incre asedimp act prote ction topre vent vehicle
occu pants from sufferi ngacidb urns shou ld
the battery bedamag edinthe eventofan
acci dent.
In orde rfor the battery toachi evethemaxi -
mum possibleserv icelife, itmus talway sb e
suf ficiently charged.
Like other batterie s,the vehi clebattery may
di scha rgeover time ifyo ud on otuse thevehi -
cle. Inthis case ,havet he battery disconnec-
ted ataq ualifi ed spe cialist wor kshop .You can
al so char gethe battery with ac har ger recom -
mende dbyM erce des-Benz. Contact aquali-
fie ds pecia list wor kshop forfurth erinfor ma-
tion.
Have thebattery condi tionofchar gechecke d
more frequently ifyo uu sethe vehi clemai nly
for shor ttrip so rify ou leaveitstand ingidle
for aleng thy period.Consul taq ualifi ed spe -
cia list wor kshop ifyo uw isht oleave your vehi -
cle parked foralong period oftime .
Re move theSmartKe yify ou park the vehi cle
and donot require any electrica lconsu mers .
The vehiclewillthen usevery little energ y,
thus conser vingbattery power. If
the pow ersup plyh asbee ninterr upted, e.g.
if yo ur econne ctthe battery ,you willhav eto:
R rese tthe functi onfor automa ticallyf oldi ng
the exteri ormirr orsin/ou tbyfoldi ng the
mirr orsouto nce (Ypage 93)
R set the clock
On vehi cles with am ultimed iasystem, the
time isset automa tically. Charg
ingthe battery G
WARNI
NG
Duri ngchar ging andjump -starti ng,expl osive
ga ses can esca pefrom thebattery .The re is
ar isk ofan expl osion.
Pa rticu larly avo idfire ,ope nf lames, creating
spa rks and smoki ng.Ensure thereissuf fi-
cient ventilation whi lechar ging andjump -
starti ng.Donot leano ver abattery . G
WARNI
NG
Battery acidisc austic. Thereisar isk of
inju ry.
Avoid contact with skin, eyes orcloth ing.Do
not inha leany battery gases .Don otlea n
over thebattery .Keepc hildre nawayfrom
ba tterie s.Wa shaway battery acidimme di-
atel ywithp lenty ofclea nwater and seek
med icalattenti on. G
WARNI
NG
Ad ischa rged battery canfreezeattempe ra-
ture sbelow free zing point. Whe njump -start-
ing the vehi cleorchar ging thebattery ,
ga ses can esca pefrom thebattery .The re is
ar isk ofan expl osion.
All ow the frozen battery tothaw outb efore
char ging itor jump -starti ng.
! Only
usebattery chargers with am aximum
char ging voltage of14.8 V.
! On
lycha rge the battery using the jump -
star ting connecti onpoint.
The jump -starti ngconnecti onpointisin the
engi necomp artme nt. 260
Battery
(vehi cle)Breakdo wnassi stanc e

If
the indicator/wa rninglampsdon otlight up
at low temperature s,itis very likely thatthe
discha rgedbattery hasfrozen. Inthis case,
you may neither chargethebattery norjump-
start thevehicle .The service lifeofat hawed -
out battery maybeshorter. Thestarting char-
acteristics canbeimpa ired, particul arlyatlow
temperature s.Have thethawed -outbattery
checked ataq ualifie dspecia listworkshop.
Rea dthe battery charger's operatinginstruc-
tions before charging thebattery.
X Open thehood.
X Connect thebattery charger tothe positive
terminal andground pointinthe same order
as when connecting thedonor battery inthe
jump-starting procedure(Y page 261). Replaci
ngthe 12Vb attery
Observe thenotes onthe 12Vb attery
(Y page 258).
Mercedes-Benz recommendsthatyouhave
the 12Vb attery replacedataq ualifie dspe-
ciali stworkshop, e.g.atan authori zed
Mercedes-Benz Center. If
you want torepla cethe battery yourself,
observe thefollow ingnotes:
R Alway srepla cead efective batterywitha
battery whichmeets thespecific require-
ments ofthe vehicle .
The vehicle isequi pped withanAGM
(Absorbent GlassMat) technology battery.
Full vehicle functionality isonly guaranteed
with anAGM battery. Forsafety reasons,
Mercedes-Benz recommendsthatyouonly
use batteries whichhavebeen tested and
appro vedforyou rvehicle byMercedes-
Benz.
R Use detachab leparts suchasbreather
hoses, angled connecting piecesorterminal
covers fromthebattery whichisto be
repla ced.
R Make surethatthevent hose isalw ays con-
nected tothe origina lopening onthe bat-
tery side.
R Install existing orsupp liedcellcaps topre-
vent gases orbattery acidfrom escapi ng.
R Make surethatthedetachab leparts are
connected againinthe same way. Jump-star
ting
For thejump-starting procedure,use only thejump-starting connectionpointinthe engine com-
partment, consisting ofap ositive terminal andaground point. G
WARNING
Battery acidiscaustic. Thereisar isk ofinjury.
Avoid contact withskin, eyesorclothing. Donot inhal eanybattery gases.Don otlea no ver the
battery. Keepchildre nawayfrom batteries. Washawaybattery acidimmedi atelywithplenty of
clean water andseek medica lattention. G
WARNING
During charging andjump-starting, explosivegases canescape fromthebattery. Thereisa
risk ofan explosi on.
Particul arlyavoid fire,open flames ,creating sparksandsmoking. Ensurethereissufficie nt
ventilation whilecharging andjump-starting. Donot leano ver abattery. G
WARNING
During thecharging process,abattery produceshydro gengas. Ifas hort circuit occurs or
sparks arecreated, thehydro gengascan ignite. Thereisar isk ofan explosi on. Jump-st
arting
261Breakd owna ssis tance
Z

R
Make surethatthepositive terminal ofac onn ected battery doesnotcome intocontactwith
vehicle parts.
R Never placemetal object sortools onabattery.
R Itis important thatyouobserve thedescribed orderofthe battery terminals whenconnect-
ing and disconnec tingabattery.
R When jump-st arting,makesurethatthebattery poleswithidentical polarityareconn ected.
R Itis particularly importanttoobserve thedescribed orderwhenconnecting anddisconnec t-
ing the jumper cables.
R Never connectordisconnec tthe battery terminals whiletheengine isrunning. G
WARNING
Ad ischarged batterycanfreeze attemperatures belowfreezing point.Whenjump-st artingthe
vehicle orcharging thebattery, gasescanescape fromthebattery. Thereisar isk ofan explo-
sion.
Allow thefrozen battery tothaw outbefore charging itor jump-st arting.
! Avoid
repeated andlengthy startingattempt s.Otherwise, thecatalytic convertercould be
damaged bythe non- combusted fuel.
If the indicator/warnin glamps donot light upatlow temperatures, itis very likely thatthedis-
charged batteryhasfrozen .Int his case, youmay neither chargethebattery norjump-st artthe
vehicle. Theservice lifeofat hawed-out batterymaybeshorter. Thestartin gcharacterist icscan
be impaired, particularly atlow temperatures. Havethethawed-out batterycheckedataq uali-
fied specialist workshop.
Do not start thevehicle usingarapid charging device.Ifyour vehicle's batteryisdischarged, the
engine canbejump-st artedfromanother vehicleorfrom adonor battery usingjumper cables.
Observe thefollowing points:
R The battery isnot accessible inall vehicles. Ifthe other vehicle's batteryisnot accessible,
jump-st artthe vehicle usingadonor battery orajump-st artingdevice.
R You may onlyjump-st artthe vehicle whentheengine andexhaust systemarecold.
R Do not start theengine ifthe battery isfrozen .Let the battery thawfirst.
R Only jump-st artfrom batteries witha12V voltage rating.
R Only usejumper cableswhichhaveasufficient cross-sectionandinsulated terminalclamps.
R Ifthe battery isfully discharged, leavethebattery thatisbeing usedtojump-st artconn ected
for afew minutes beforeattempt ingtostart. Thischarges thebattery slightly.
R Make surethatthetwo vehicles donot touch.
Make surethat:
R The jumper cablesarenot damaged.
R Bare parts ofthe terminal clampdonot come intocontactwith other metal partswhile the
jumper cablesareconn ected tothe battery.
R The jumper cablescannot comeintocontactwith parts which canmove whentheengine is
running, suchasthe V-belt pulleyorthe fan.
X Secure thevehicle byapply ingthe electric parking brake.
X Shift thetransmission toposition 005D.
X Make surethattheignition isswitched off.Allindicator lampsinthe instrumen tcluster must
be off. When usingtheSmartK ey,turn theSmartK eytoposition 0092inthe ignition lockand
remove it(Y page 118). 262
Jump
-startingBr eakdown assistance

X
Swi tch offalle lectri cal consu mers,e.g. rea rwindow defroste r,lighti ng,etc.
X Ope nthe hoo d. Pos
ition numb er0084 identif iest he cha rgedbattery ofthe othe rvehicleo rane quiva lent jump -
star ting device.
X Sli de cove r0043 ofpos itive termi nal0044inthe directi onofthe arrow .
X Co nnect positive termi nal0044onyour veh iclet op ositive termi nal0087ofdono rbattery 0084using
the jump ercab le,a lway sb egin with pos itive termi nal0044onyour ow nv ehiclef irst.
X Start theengi neofthe dono rvehiclea nd run itat idling spe ed.
X Co nnect negativetermi nal0085ofdono rbattery 0084togro und point0083 ofyour veh icleu sing the
jump ercab le,b eginni ngwith dono rbattery 0084first.
X Start theengi ne.
X Befo redisconne ctingthejump ercab les, lett he engi nerun forseve ralminu tes.
X Firs t,remo vethe jump ercab lesf rom ground point0083 and nega tivetermi nal0085,t henfrom
pos itive termi nal0044and positive termi nal0087.B egine acht ime atthe contac tson your ow n
veh iclef irst.
X Close cove r0043 ofpos itive termi nal0044afte rremo ving thejump ercab les.
X Have thebattery checke dataq ualifi ed spe cialist wo rksho p.
Ju mp-sta rtingisnot consi deredtobe anorma lope rati ngcondi tion.
i Ju
mpe rcablesa nd further informa tion regard ing jump -startingcanbeobta ineda tany quali-
fie ds pecia list wo rksho p. Jump-startin
g
263Breakdo wnassistanc e Z