2020 MERCEDES-BENZ SLC ROADSTER transmission

Problems
withthetransmission Problem
Possible
causes/co nsequences and0050 0050
Solutions The
transm issionhas
problems shiftinggear. The
transm issionislosing oil.
X Have thetransm issioncheckedataq uali fied specialist workshop
immediately. The
acceleration ability
is deteriorating.
The transm issionno
longer changes gear. The
transm issionisin emergency mode.
It is only partly possible toengage thegears, orthe transm issionis
in position 005C.
X Stop thevehicle.
X Shift thetransm issiontoposition 005D.
X Switch offthe engine.
X Wait atleast tenseconds beforerestartingthe engine.
X Shift thetransm issiontoposition 005Bor005E.
X Have thetransm issioncheckedataq uali fied specialist workshop
immediately. Refueling
Import
antsafety notes G
WARNING
Fuel ishighly flammable. Riskoffire and
explosion byimproper handlingoffuel.
You must avoid fire,open flames, smoking
and creating sparks.Switchoffthe ignition
before refueling and,ifpresent, switchoff
the auxilia ryheating. G
WARNING
Fuels aretoxic andharmful tohealth. There
is ar isk ofinjury.
You must avoid fuelscoming intocontact
with skin, eyesandclothes orbeing swal-
lowed.
Do not inhale thefuel vapors. Keepchildren
away fromfuels.
Keep doors andwindows closedduringthe
refueling process. If
you orothers comeintocontactwith fuel,
observe thefollowing points:
R Immediately rinsethefuel offyour skin
with soap andwater.
R Ifyou getfuel into your eyes, immediately
rinse youreyes throughly withclean
water. Seekmedical attentionimmedi-
ately.
R Seek medical attentionimmediately iffuel
has been swallow ed.Donot induce vomit-
ing.
R Immediately changeoutofclothing which
has come intocontactwith fuel. G
WARNING
Elect rostatic charging canlead tothe crea-
tion ofsparks andignite fuelvapor. Thereis
ar isk offire and explosion.
Touch themetallic bodyofthe vehicle
before youopen thefuel filler caporhandle
the pump nozzle.Any possible electrostatic
charge present willinthis way bedepleted.
Do not getinto thevehicle againduring the
refueling process.Otherwise, electrostatic
charge couldbuildupagain. 132
RefuelingDriving
andparking

To
ensure thatthevehicle issecured against
rolling awayunintention ally:
R the electric parking brakemustbeapplied.
R the trans mission mustbeinposition 005D.
R the Smart Keymust beremoved fromthe
ignition lock.
R the front wheels mustbeturned towards the
curb onsteep uphillordownhill gradients. Switching
offthe engine G
WARNIN
G
The automatic transmission switches toneu-
tral position Nwhen youswitch offthe
engine. Thevehicle mayrollaway .There isa
risk ofan accident .
Aft erswitching offthe engine, alwaysswitch
to parking position P.Prevent theparked
vehicle fromrolling awaybyapplyi ngthe
parking brake.
X Apply theelectric parking brake.
X Shift thetrans mission toposition 005D
(Y page 126).
X With theSmar tKey:turn theSmart Keyto
position 0092inthe ignition lockandremove
it.
The immobilizer isactivated.
X With KEYLESS-GO: presstheKEYLE SS-GO
Start /Stopbutton (Ypage 118).
The engine stopsandallthe indicator lamps
in the instr ument cluster goout.
If the driver's doorisclosed, thisisthe
same asSmart Keyposition 0047.Ifthe driv-
er's door isopen, thisisthe same asSmart -
Key position 0092(Ypage 118).
The engine canbeswitched offwhile thevehi-
cle isin motion bypressing andholding the
Start /Stopbutton forabout threeseconds.
This funct ionoperates independent lyof the
ECO start/stopautomatic engineswitch-off
funct ion. Elec
tric par king brake
General notes G
WARNIN
G
If children areleft unsupervised inthe vehi-
cle, they could:
R open doors, thereby endangerin gother
persons orroad users
R get out and bestruck byoncom ingtraff ic
R operate thevehicle's equipment
Addition ally,children couldsetthe vehicle in
motion if,for example, they:
R release theparking brake
R shift theautomatic transmission outof
park position 005Dorshift themanual
trans mission toneutral
R start theengine
There isar isk ofan accident andinjury.
When leaving thevehicle, alwaystake the
Smart Keywith youand lock thevehicle. This
also applies forthe digital vehicle keyifthe
"Digital Vehicle Key"functionisactivated via
Mercedes meconn ect.
Always keeptheSmart Keyoutofreach of
children. Thisalso applies forthe Digital
Vehicle Keyifthe "Digital Vehicle Key"func-
tion isactivated viaMercedes meconn ect.
The funct ionofthe electric parking brakeis
dependent onthe on-board voltage.Ifthe on-
board voltage islow orthere isam alfunct ion
in the system, itmay notbepossible toapply
the released parkingbrake.
X Ifthis isthe case, onlypark thevehicle on
level ground andsecure itto prevent itroll-
ing away .
X Shift theautomatic transmission toposition
005D.
It may notbepossible torelease anapplied
parking brakeifthe on-board voltageislow or
there isam alfunct ioninthe system. Contact a
qualified specialist workshop.
The electric parking brakeperforms afunct ion
test atregular intervalswhile theengine is
switched off.The sounds thatcanbeheard
while thisisoccurrin garenormal. Par
king
135Driving andparking Z

Mercedes-Ben
zrecommen dsthat youonly
have brake pads/linings installedonyour vehi-
cle which havebeen approved forMercedes-
Benz vehicles orwhich correspond toan
equival entqual itystandard. Brakepads/
linings whichhavenotbeen approved for
Mercedes-Ben zvehicles orwhich arenot ofan
equival entqual itycould affect yourvehicle's
operating safety.
Mercedes-Ben zrecommen dsthat youonly use
brake fluidthathasbeen specially approved
for your vehicle byMercedes-Ben z,or which
corresponds toan equival entqual itystandard.
Brake fluidwhich hasnotbeen approved for
Mercedes-Ben zvehicles orwhich isnot ofan
equival entqual itycould affect yourvehicle's
operating safety.
High-perf ormance brakesystem
(exce ptMercedes-AMG SLC43) AMG
brake systems aredesigned forheavy
loads andhave componen tswith correspond-
ing properties. Thismay lead tonoise when
braking. Thiswilldepend on:
R Speed
R Braking force
R Ambient condition s,e.g. temperature and
humidity
The wear ofindividual componen tsof the
brake system, suchasthe brake pads/linings
or brake discs, depends onthe individual driv-
ing style andoperating conditions.
For this reason, itis impossible tostate amile-
age that willbevalid under allcircumstan ces.
An aggressive drivingstylewilllead tohigh
wear. Youcanobtain moreinformation onthis
from aqualified specialist workshop.
New andreplaced brakepadsanddiscs only
reach theiroptimum brakingeffectaftersev-
eral hundred kilometers ofdriving. Compen-
sate forthis byapply inggreater forcetothe
brake pedal. Keepthisinmind, andadapt your
driving andbraking accordingly duringthis
break-in period.
Exc essive heavybraking resultsincorrespond-
ingly highbrake wear.Observe thebrake sys-
tem warning lampinthe instrumen tcluster
and note anybrake status messages inthe
multifunction display.Especially forhigh per-
formance driving,itis important tomaintain
and have thebrake system checkedregularly . Driving
onwet roads
Hydr oplaning If
water hasaccumulated toac ertain depthon
the road surface, thereisad anger ofhydro-
planing occurring.
For this reason, inthe event ofheavy rainorin
condition sinw hich hydropla ningmayoccur,
you must driveinthe following manner:
R lower yourspeed
R avoid ruts
R avoid sudden steering movement s
R brake carefully
Driving onflooded roads !
Do
not drive through floodedareas.Check
the depth ofany water before driving
through it.Drive slowly through standing
water. Otherwise, watercouldenterthe
vehicle interior orengine compartmen t.It
can then damage theengine's orautomatic
transmission' selectronic componen ts.It
can also besucked inby the engine's air
intake connection andcause engine dam-
age. Winter
driving G
WARNING
If you shift down onaslippery roadsurface
in an attempt toincrease theengine's brak-
ing effect ,the drive wheels couldlosetheir
grip. There isan increased dangerofskid-
ding andaccidents.
Do not shift down foradditional enginebrak-
ing onaslippery roadsurface. G
DANGER
If the exhaust pipeisblocked oradequ ate
ventilation isnot possible, poisonous gases
such ascarbon monoxide (CO)mayenter
the vehicle. Thisisthe case, e.g.ifthe vehi-
cle becomes trappedinsnow. Thereisar isk
of fatal injury.
If you leave theengine orthe auxilia ryheat-
ing running, makesuretheexhaust pipeand
area around thevehicle areclear ofsnow. Driving
tips
141Driving andparking
Z

Use
Parking Guidance forparking spaces:
R paral leltothe direction oftravel
R on straight roads,notbends
R that areonthe same levelasthe road, i.e.
not onthe pavement, forexample. Parking
Assist PARKTRONIC maynotdetect flat
curbs
Parking tips:
R on narrow roads,driveasclosely aspossible
past theparking space
R parking spacesthatarelittered orover-
grown mightbeidentified ormeasured
incorrect ly
R parking spacesthatarepartiall yoccupied
by trailer drawba rsmight notbeidentified
as such orbe measured incorrectly
R snowfall orheavy rainmay lead toap arking
space beingmeasured inaccurately
R pay attent iontothe Parking Assist
PARKTRONIC warningmessages duringthe
parking procedure (Ypage 155)
R when transporting aload which protrudes
from yourvehicle, youshould notuse Park-
ing Guidance
R never useParking Guidance withsnow
chains oran emergency sparewheel moun-
ted
R make surethatthetire pressures arealwa ys
correct .This has adirect effect onthe steer-
ing characteristics.
R the way your vehicle ispositioned inthe
parking spaceafterparking isdependent on
various factors. Theseinclude theposition
and shape ofthe vehicles parkedinfront
and behind itand theconditions ofthe loca-
tion. Insome cases, Parking Guidance may
guide youtoofarornot farenough intoa
parking space.Insome cases, itmay also
lead youacross oronto thecurb. Ifneces-
sary, cancel theparking procedure with
Parking Guidance. Detec
tingparking spaces 0043
Detect edparking spaceonthe left
0044 Parking symbol
0087 Detect edparking spaceonthe right
Parking Guidance isautomaticall yactivated
when youdrive forwards. Thesystem isopera-
tional atspeeds ofup toapproximately
22 mph (35km/h ).While inoperation, the
system independently locatesandmeasures
parking spacesonboth sides ofthe vehicle.
When driving atspeeds below19mph
(30 km/h), youwillsee parking symbol0044as
as tatus indicator inthe instrument cluster.
When aparking spacehasbeen detected, an
arrow towards theright 0087orthe left 0043also
appea rs.Parking Guidance onlydispla yspark-
ing spaces onthe front -passenger sideas
standard. Parkingspacesonthe driver's side
are displa yedassoon asthe turn signal onthe
driver's sideisactivated. Topark onthe driv-
er's side, youmust leave thedriver's sideturn
signal switched onuntil youhave engaged
reverse gear.
Parking Guidance willonly detect parking
spaces:
R that areparal leltothe direction oftravel
R that areatleast 5ft(1.5 m)wide
R that areatleast 4.3ft(1.3 m)longer than
your vehicle
Ap arking spaceisdispla yedwhile youare
driving pastit,and until youareapproximately
50 ft(15 m)awa yfrom it.
Parking Moving
thevehicl einto thestop position
X Stop thevehicle whentheparking space
symbol showsthedesired parking spacein
the instrument cluster.
X Vehicles withmanual transmission: shiftto
reverse gear. 158
Driving
systemsDriving andparking

Vehicles
withautomatic transmission: shift
the transmission toposition 005E.
The multifunction displayshows theBe Be
Aware ofObstacles NeartheVehi‐ Aware
ofObstacles NeartheVehi‐
cle Press 'OK'toConfirm cle
Press 'OK'toConfirm message. X
Press the0076 button onthe multifunction
steering wheeltoconfirm.
The multifunction displayswitches toPark-
ing Guidance.
Depending onyou rdistance fromthepark-
ing space, thePlease DriveBackward Please
DriveBackward
message willappea rint he multifunction dis-
play .
X Ifnecessary, reversetowards theparking
space. Thisisindicated byan arrow pointing
backwards.
Continue backingupuntil youhear atone.
Then stop; thestop position hasbeen
reached. Thearrow iswhite.
The Please SteerWheeltothe Right Please
SteerWheeltothe Right
or Please SteerWheel tothe Left Please
SteerWheel tothe Left
message appearsinthe multifunction dis-
play .
Backing upinto theparking space X
While thevehicle isstationary, turnthe
steering wheelinthe specified direction until
thearrow iswhite andawarning tone
sounds.
X To back upinto aparking space: maintain
the steering wheelangleandback upcare-
fully .
X Stop assoon asyou hear awarning tone.
The vehicle hasreached theposition in
which youneed tocountersteer.
The Please SteerWheeltothe Right Please
SteerWheeltothe Right
or Please SteerWheeltothe Left Please
SteerWheeltothe Left
message appearsinthe multifunction dis-
play .
X To countersteer: whilethe vehicle issta-
tionary, turnthesteering wheelinthe speci-
fied direction untilthearrow iswhite anda
warning tonesounds.
X To back upinto aparking space: maintain
the steering wheelangleandback upcare-
fully .
X Stop assoon asyou hear awarning tone.At
the latest, stopassoon asParking Assist
PARKTRONIC soundsthecontinuous warn-
ing tone.
The Parking Guidance Finished Parking
Guidance Finishedmes-
sage appea rsinthe multifunction display
and atone sounds. Youmay beasked to
steer inad ifferent direction andthen
change gear.Inthis case, further displaysin
the multifunction displaywill direct youto
the final position.
X Maneuver ifnecessary.
X Observe thewarning messages displayedby
Parking AssistPARKTRONIC (Ypage 155).
Cance lingParking Guidance X
Press theParking AssistPARKTRONIC but-
ton onthe center console (Ypage 156).
Parking Guidance isimmedia telycanceled
and Parking AssistPARKTRONIC isswitched
off.
Parking Guidance iscanceled automatical lyif
it is no longer possibl etog uideyou into the
parking space,orifam alfunction occurs.
The parking spacesymbol goesoutand a
warning tonesounds. Drivin
gsystems
159Drivingand par king Z

0063
0064 Press
andhold:
R In the Audio Audio
menu: selects apre-
set listoras tation listinthe
desired frequency range,selects
an audio trackorvideo scene
using rapidscrolling
R In the Tel Tel
(Telephone) menu:
starts rapidscrolling ifthe phone
book isopen 0076 R
Confirms theselection ordisplay
message
R In the Tel Tel
(Telephone) menu:
switches tothe telephone book
and starts dialingthe selected
number 0038 Press
briefly:
R Back
R Switches offvoice-operated con-
trol fornavigation orthe Voice
Control System
R Hides display messages orcalls
up the last Trip Trip
menu function
used
R Exit sthe telephone book/redial
memory 0038 Press
andhold:
R Call supthe standard displayin
the Trip Trip
menu Right
control panel 0076 R
Rejects orends acall
R Exit sthe telephone book/redial
memory 0061 R
Makes oraccepts acall
R Switches tothe redial memory 0081
0082 R
Adjusts thevolume 0063 R
Mute 0059 R
Switches onvoice-operated con-
trol fornavigation orthe Voice
Control System You
canfind further information onvoice-oper-
ated controlfor navigation inthe manufactur- er's
operating instructionsinvehicles withan
Audio 20multimedia system.
Vehicles withtheCOMAND multimedia sys-
tem: youcan find further information onthe
Voice Control System inthe separate operat-
ing instruct ions. Multifunction
display 0043
Drive program (Ypage 125)
0044 Transmission position(Ypage 125)
0087 Text field
0085 Menu bar
0083 Time
0084 Outside temperature orspeed
(Y page 177)
Set thetime using themultimedia system;see
the Digital Operator's Manual.
X To display menubar0085:press the0059
or 0065 button onthe steering wheel.
If you donot press thebuttons anylonger,
menu bar0085isfaded outafter afew sec-
onds.
Text field 0087shows theselected menuor
submenu anddisplay messages.
Possible displaysinthe multifu nctiondis-
play:
R 0097Gearshift recommen dation,whenshifting
manually (Ypage 131)
R 005D Parking Guidance(Ypage 157)
R CRUISE CRUISE
Cruisecontrol(Ypage 142) 170
Displays
andoperat ionOn-board computerand displays

Safety
systems Warning/
indicator
lamp 00510051
Signal type
Possible causes/co nsequences and0050 0050
Solutions 0027004D
0051
0027 (USAonly)or004D (Canada only):thered brake system warning lamp
is lit while theengine isrunning. Awarning tonealsosounds.
G WARNING
There isnot enough brakefluidinthe brake fluidreservoir.
The braking effectmaybeimpaired.
There isar isk ofan accident.
X Pull over andstop thevehicle safelyassoon aspossible, payingatten tionto
road andtraffic condition s.Do not cont inue driving underanycircumst ances.
X Secure thevehicle against rollingaway(Ypage 134).
X Do not add brake fluid.Adding morewillnotcorrect themalfunction .
X Consult aquali fied specialist workshop.
X Observe theadditional displaymessages inthe multifunct iondisplay . 0027
0051
USA only: thered brake system warning lampislit while theengine isrun-
ning. Themultifunct iondisplay alsoshows adisplay message withthe0026
symbol.
The brake pads/linings havereached theirwear limit.
X Visit aquali fied specialist workshop. 0025
0051
The yellow ABSwarning lampislit while theengine isrunning.
ABS (anti-lock brakingsystem) ismalfunction ing.
If there isan additional warningtone,theEBD (electronic brakeforcedistribu-
tion) ismalfunction ing.
Other driving systems anddriving safetysystems mayalsomalfunction .
G WARNING
The brake system continues tofunct ionnormally, butwithout thefunct ionslis-
ted above. Thefront andrear wheels couldtherefore lockifyou perform afull
brake application, forexample.
The steerability andbraking characterist icsmay beseverely affected. Thebrak-
ing distance inan emergency brakingsituation canincrease.
If ESP ®
is not operational, ESP®
is unable tostabilize thevehicle.
There isan increased riskofskidding andanaccident.
X Observe theadditional displaymessages inthe multifunct iondisplay .
X Drive oncarefully.
X Visit aquali fied specialist workshop immediately.
If the ABS controlunit isdefective, thereisalso apossibili tythat other systems,
such asthe navigation systemorthe automatic transmission,willnotbeavaila -
ble. Indicator
andwarning lamps
211On-board computerand displays Z

R
solvents
R cleaning agentscontaining solvents
Do not scrub.
Do not touch thesurfaces andfilms with
hard objects, e.g.rings orice scrapers. Oth-
erwise, youmay scratch ordamage thesur-
faces andfilms.
! Do
not park yourvehicle foralong period
of time directly aftercleaning, particularly
after cleaning thewheel rimwith wheel
cleaner. Wheelcleaner canlead tothe
increased corrosionofthe brake discsand
pads. Therefore, driveforafew minutes
after cleaning. Byheating upthe brakes, the
brake discsandpads dry.Thevehicle can
then beparked foralong period oftime.
Regu larcare ofyour vehicle isac ondition for
retaining thequal ityinthe long term.
Use care products andcleaning agentsrecom-
mended andapproved byMercedes-Benz . Washing
thevehicl eand cleani ng
the paintwork
Automatic carwash G
WARNING
Braking efficiency isreduced afterwashing
the vehicle. Thereisar isk ofan accident.
Aft erthe vehicle hasbeen washed, brake
carefully whilepayingattent iontothe traffic
conditions untilfullbraking poweris
restored.
! When
DISTRONIC PLUSorthe HOLD func-
tion isactivated, thevehicle brakesauto-
matically incertain situations.
To avoid damage tothe vehicle, deactivate
DISTRONIC PLUSandtheHOLD function in
the followi ngorsimilar situations:
R when towing thevehicle
R in the carwash
! It
is preferable touse carwashes with
adjustable high-pressure pre-cleaningthat
corresponds tothe specification forthe
Cabri oletprogram. Incar washes thatuse
high water pressures, thereisar isk that a
small amount ofwater mayleakintothe
vehicle. !
Lock
thecarifyou wash itin an automatic
car wash. Otherwise, thevehicle mightbe
damaged .
! Never
cleanyourvehicle inaT ouchless
Automatic CarWash asthese usespecial
cleaning agents.Thesecleaning agentscan
damage thepaintwork orplastic parts.
If you have yourvehicle cleaned inah igh-
pressure automatic carwash, small
amounts ofwater mayenter thevehicle.
! Make
surethattheautomatic transmission
is in position Nwhen washing yourvehicle
in at ow-through carwash. Thevehicle could
be damaged ifthe transmission isin another
position.
! Make
surethat:
R the side windows androof arecompletely
closed
R the climate controlblower isswitched off
R the windshiel dwiper switch isin position
0
The vehicle mayotherwise bedamaged .
You canclean thevehicle atan automatic car
wash fromthevery start.
Preferably cleanthevehicle atautomatic car
washes thatusetextilewashing elements
without brushes. Thisprevents finescratches
from forming onthe paintwork andfilm.
If the vehicle isvery dirty, pre-wash itbefore
cleaning itin an automatic carwash.
Aft erusing anautomatic carwash, wipeoff
wax from thewindshiel dand the wiper blades.
This willprevent smearsandreduce wiping
noises caused byresidue onthe windshiel d.
i Vehicles
withdecorative film:select a
wash program withouthotwax atthe auto-
matic carwash.
Washing byhand In
some countries, washingbyhand isonly
allow edatspeciall yequip ped washing bays.
Observe thelegal requirements ineach coun-
try.
X Do not use hotwater anddonot wash the
vehicle indirect sunlight.
X Use asoft sponge toclean.
X Use amildcleaning agent,suchasac ar
shampoo approved byMercedes-Benz . Care
247Maintenance andcare Z