2019 MERCEDES-BENZ SLC ROADSTER lane assist

The
corn ering lampmayremain litfor ashort
time, butisautomatically switchedoffafter no
more thanthree minutes.
Cornering lightfunction withtraffic circle
function:
The corn ering lightfunct ionisactivated on
both sides before enteringatraff iccircle
through anevaluation ofthe current GPSposi-
tion ofthe vehicle. Itremains activeuntilafter
the vehicle hasleftthetraff iccircle. Inthis
way, pedestrians crossingthe road, forexam-
ple, areilluminated byyour vehicle ingood
time. Active
lightfunction
The active lightfunct ionisasystem that
moves theheadlamps accordingto the steer-
ing movemen tsof the front wheels. Inthis
way, relevant areasremain illuminated while
driving. Thisallows youtorecogn izepedes-
trians, cyclists andanimals sooner.
Active: whenthelights areswitched on.
Vehicles withLane Keeping Assist:the active
light funct ionevaluates thecourse ofthe lane
in which youaredriving andpre-empt ively
cont rolstheactive lightfunct ion. Adapt
iveHighbeam Assist
General notes You
canusethis funct iontoset the headlamps
to change between lowbeam andhigh beam
automatically. Thesystem recognizesvehicles
with their lights on,either approaching from
the opposite direction ortraveling infront of
your vehicle, andconsequent lyswitches the
headlamps fromhighbeam tolow beam.
The system automatically adaptsthelow-beam
headlamp rangedepending onthe distance to
the other vehicle. Oncethesystem nolonger
detect sany other vehicles, itreactivat esthe
high-beam headlamps.
The system's opticalsensorislocated behind
the windshield neartheoverhead control
panel. Import
antsafety notes G
WARNIN
G
Adaptive Highbeam Assistdoesnotrecog-
nize road users:
R who have nolights, e.g.pedestrians
R who have poorlighting, e.g.cyclists
R whose lighting isblocked, e.g.byabarrier
On very rareoccasions ,Adaptive Highbeam
Assist mayfailtorecogn izeother roadusers
that have lights, ormay recogn izethem too
late. Inthis, orinsimilar situations, theauto-
matic high-beam headlamps willnotbe
deactivated orwill beactivated regardless.
There isarisk ofan accident .
Always carefully observethetraff iccondi-
tions andswitch offthe high-beam head-
lamps ingood time.
Adaptive Highbeam Assistcannottake into
account road,weather ortraff iccondit ions.
Adaptive Highbeam Assistisonly anaid. You
are responsible foradjusting thevehicle's
lighting tothe prevailing light,visibility and
traff iccondit ions.
In particular, thedetect ionofobstacles canbe
restr icted ifthere is:
R poor visibility, e.g.due tofog, heavy rainor
snow
R dirt onthe sensors orthe sensors are
obscured
Switching AdaptiveHighbeam Assist
on/off X
To switch on:turn thelight switch to0058.
X Press thecombinat ionswitch beyond the
pressure pointinthe direction ofarrow 0043.
The 00CE indicator lampinthe multifunct ion
display lightsupwhen itis dark andthelight
sensor activates thelow-beam headlamps.
If you aredriving atspeeds aboveapprox-
imately 16mph (25km/ h):
The headlamp rangeisset automatically
depending onthe distance between the
vehicle andother roadusers.
If you aredriving atspeeds aboveapprox-
imately 19mph (30km/ h)and noother
road users havebeen detect ed: 100
Exterior
lightingLightsandwindshield wipers

As
ares ult, Active Distance Assist
DISTR ONICma ynei ther give warning snor
inte rveneinsuch situa tions. The reisaris k
of an acci dent.
Alw ayspa ycar efulatte ntionto the traffic
si tua tionand berea dytobra ke. G
WA
RNING
Dis tance keeping assista ntcanno tal wa ys
cle arly identi fyothe rroa dus ers and com-
pl ex traf ficsitua tions.
In such cas es, dista nce keeping assista nt
can:
R acce lera te or bra kethe vehicleune xpect-
ed ly
R inte rveneune xpected ly
The reisaris kof an acci dent.
Co ntinu eto drive car efully and berea dyto
bra ke, especially ifdista nce keeping assis-
tant warns you. G
WA
RNING
Active Distance AssistDISTR ONICbra kes
yo ur veh iclewi th up to50% ofthe maximu m
po ssi ble de cel era tion.Ifthi sde cel era tionis
not sufficie nt, Active Distance Assist
DISTR ONICalerts youwi th avis ualand
aco ustic warning .The reisaris kof an acci -
de nt.
Adju styour spe edinthes ecas esand main-
tai nsu fficie ntdista nce.
App lythe brakes yoursel fand /or take eva-
si ve acti on.
! Whe
nActive Distance AssistDISTR ONIC
or the HOLD functio nis acti vated ,the vehi-
cle brakes automa tically in certa insitua -
tio ns.
To avoid da ma getothe vehicle, de acti vate
Active Distance AssistDISTR ONICand the
HOLD functio nin the followi ng orsimil arsit-
ua tio ns:
R wh en tow ingthe vehicle
R in the carwash
Active Distance AssistDISTR ONICcan neither
red uce theriskof an acci dent ifyo ufai lto ad
aptyo ur driving style,nor override the laws
of phy sics. Active Distance AssistDISTR ONIC
canno ttake intoacco untroad,we ath eror traf -
fic cond itions. Active Distance Assist
DISTR ONICis onl yan aid. Yo uar eres ponsi ble
for the dista nce tothe vehiclein front, for
veh iclespe ed,for braking ingoo dtime andfor
sta ying inyour lane.
Do not useActive Distance AssistDISTR ONIC:
R In roa dand trafficcond itions which donot
al lo w yo uto ma inta inaconsta ntspe ed,e.g .
in hea vytraf ficoron windi ng roa ds
R on slip pe ry roa dsu rfa ces .Bra king oracce l-
era ting couldcau sethe drive wheelsto lose
trac tionand thevehiclecou ldthen skid
R In po or vis ibility ,e.g .du eto fog ,hea vyrain
or snow
Active Distance AssistDISTR ONICma ynot
de tect narrow vehicles driving infront, e.g.
moto rcycles,or veh icles driving inasta gge red
form ation.
In particu lar, the detecti onofobsta clescan be
imp aired if:
R The reisdirt on the sens orsorany thing else
cove ringthesens ors
R The reissnow orhea vyrain
R The reisinte rference byothe rra da rsou rces
R The rearestro ngrada rref lectio ns,forexa m-
pl e in pa rking garages
If Active Distance AssistDISTR ONICno longe r
de tects aveh iclein front, Distance Pilot
DISTR ONICma yune xpected lyacce lera te to
the speedstor ed.
Thi sspe edmay:
R Be too high ifyo uar edri ving inaturn ing
la ne oran exitla ne
R Be sohigh when driving inthe right-ha nd
la ne tha tyo uove rtake vehicles inthe left-
ha nd lane
R Be sohigh inthe left lane tha tyo upa ss
veh icles driving onthe right
If ther eis acha nge ofdri ver s,ad vis ethe new
dri ver ofthe speedstor ed. Dri
ving sys tems
145Dr ivi ng andparki ng Z

ate
sor dec eler ates.Ifyou donotkn ow the
st ore dspee d,theveh icle coul dacc eler ate
or brak eunex pectedly. Ther eis arisk ofan
acc iden t.
Pay attent ion totheroad andtraff iccon di-
tio ns befo recallin gup thest ore dspee d.If
you donotkn ow thest ore dspee d,store the
desir edspee dagain .
X Briefly pullthecr uise control leve rto wards
you 0085.
X Remov eyour footfr om theacc eler ator
pedal.
The first tim eAc tiveDis tan ceAssist
DI STRO NICisact ivat ed, itstore sth ecur ren t
spee dor reg ulate sth espee dof theveh icle
to theprev iously store dspee d.
Pull ingawa yand driving
X If
you want topullawa ywith Activ eDis-
ta nce Assist DISTRONIC: rem ove your foot
fr om thebrak epedal.
X Briefly pullthecr uise control leve rto wards
you 0085.
or X IfAc tiveDis tan ceAssist DISTRO NICisact i-
vat ed: acceler ate brie fly.
Your vehicle pulls away andadapt sits spee d
to that oftheveh icle infron t.Ifno veh icle is
det ectedinfron t,your vehicle acceler ates
to theset spee d.
The vehicle can also pullaway when itis fac ing
an unid entified obstacle orisdriv ingonadif-
fer ent line from another veh icle.The vehicle
th en brak esauto matically. Beready tobrak e
at all tim es.
If th ere isno veh icle infron t,Ac tiveDis tan ce
As sist DISTRO NICoper atesin thesame way
as cruise control.
If Ac tiveDis tan ceAssist DISTRO NICdetectsa
slowe r-mov ingvehicle infron t,itbrak esyour
veh icle.In this way, thedist anceyou have
selec tedis main tained.
If Ac tiveDis tan ceAssist DISTRO NICdetectsa
fast er-mov ingvehicle infron t,itinc reas esthe
driv ingspee d.Howe ver,th eveh icle ison ly
acc eler atedup tothespee dyou have store d. Select
ingthedr ive progr am
Ac tiveDis tan ceAssist DISTRO NICsuppo rts a
spor tydriv ingstyle when youhave selected
th eS or S+ driv eprog ram(Ypage 124).
Ac cel erat ionbehin dth eveh icle infron tor to
th eset spee dis then noticeably more
dynam ic.Ifyou have selectedth eC or Edriv -
ing prog ram,th eveh icle acceler atesmor e
gen tly. Incit ytraff icand stop- start traff ic,
driv eprog ramCis rec omm ended.
Cha nging lanes
If you want tochang eto theove rtakin glane
on mult i-laneroads ,Ac tiveDis tan ceAssist
DI STRO NICsuppo rts you if:
R you aredrivingfast erthan 45 mph
(70 km/h)
R Ac tiveDis tan ceAssist DISTRO NICismain -
tain ingthedist anceto aveh icle infron t
R you switchon theappro priatetur nsign al
R Ac tiveDis tan ceAssist DISTRO NICdoes not
cur ren tlydet ect adang erofcol lision
If th ese condition sare fulfilled, yourvehicle is
acc eler ated.Ac cel erat ionwill beinterr upte dif
ch ang inglane stak estoolon gor ifth edis-
tan cebet ween yourvehicle and theveh icle in
fr on tbec ome sto osmall .
i When
youchang elane s,Ac tiveDis tan ce
As sist DISTRO NICmon itorstheleft lane on
left -hand- driveveh iclesor therigh tlane on
righ t-han d-driveveh icles.
St opp ing G
WAR
NING
If you leave thedriv er'sseat when theveh i-
cle ison lybein gbrak edbyActiveDis tan ce
As sist DISTRO NIC,itcoul droll away:
R ifth ere isamalf unctionin thesyst emor
in thevolt age supply
R ifAc tiveDis tan ceAssist DISTRO NICis
deac tivate dusin gth ecr uise control leve r,
for exam plebyaveh icle occupant orfrom
out side theveh icle
R ifth eelec trical systemintheeng inecom -
part men t,th ebat tery or thefuse sare
tam pere dwith Driv
ingsyst ems
147Drivingand parking
Z

i
The
lastspeed stored remains storeduntil
you switch offthe engine.
i Act
ive Distan ceAssist DISTRONIC isnot
deactivated ifyou depress theaccelerator
pedal. Ifyou accelerate toovertak e,Act ive
Distan ceAssist DISTRONIC adjuststhevehi-
cle's speed tothe last speed stored after
you have finished overtaking.
Act ive Distan ceAssist DISTRONIC isautomati-
cally deactivated if:
R you engage theelectric parking brakeorif
the vehicle isautomatically securedwiththe
electric parking brake
R ESP ®
inter venes oryou deactivate ESP®
R the trans mission isin position 005D,005Eor005C
R you pull thecruise controllever towards you
in order topull away andthefront -
passenger doorisopen
R you activate Active Parking Assist
R the vehicle isskidding
If Act ive Distan ceAssist DISTRONIC isdeacti-
vated automatically, youwillhear awarning
ton e.The Active Distance AssistOff Active
Distance AssistOff
message willappear onthe multifunct iondis-
play forapproximately fiveseconds.
Tips fordriving withActive Distance
Assist DISTRONIC General
notes
The following contains description sof cert ain
road andtrafficcondit ionsinwhich youmust
be particularly attentive.Insuch situations,
brake ifnecessary. Active Distan ceAssist
DIS TRONIC willthen bedeactivated.
Cornering, goingintoandcoming outof
a bend The
ability ofAct ive Distan ceAssist
DIS TRONIC todetect vehicles whencornering
is limited. Yourvehicle maybrake unexpect -
edly orlate.
Vehicles traveling onadiffer entline Act
ive Distan ceAssist DISTRONIC maynot
detect vehicles thatarenot driving inthe mid-
dle oftheir lane. Thedistance tothe vehicle in
front willbetoo short.
Other vehicles changing lanes Act
ive Distan ceAssist DISTRONIC hasnot
detect edthe vehicle cuttinginyet. Thedis-
tanc eto this vehicle willbetoo short.
Nar row vehicles 150
Driving
systemsDriving andparking

The
image fromtherear view camera is
availabl ethroughout themaneuvering proc-
ess.
To deactivat e:the rear view camera deacti-
vates ifyou shift thetrans mission toposition
005D, orafter driving forwards ashort distance.
The inner segment sof the warning indicator
are display edinred ifthere isacomplete sys-
tem failure. Theindicator lampinthe
PARKTRONIC buttonlightsup.
If the system failsatthe rear ofthe vehicle:
R the rear segment sare shown inred when
backing up.
R the rear segment sare hidden whendriving
forwards.
Displays inthe mult imedia system The
rear view camera mayshow adistort ed
view ofobstacles, showthemincorr ectlyor
not atall. The rear view camera doesnotshow
object sin the following positions:
R very close tothe rear bumper
R under therear bumper
R in close range above thehandle onthe trunk
lid
! Object
snot atground levelmayappear to
be further awaythantheyactually are,e.g.:
R the bumper ofaparked vehicle
R the drawbar ofatrailer
R the ball coupling ofatrailer towhitch
R the rear section ofan HGV
R aslanted post
Use theguidelines onlyfororient ation.
Approach objectsno further thanthebot-
tom- most guideline. 0043
Yellow guidelineatadistance ofapprox-
imately 13ft(4.0 m)from therear area
0044 White guidelinewithout steeringinput –
vehicle widthincluding theexter iormirrors
(static)
0087 Yellow guidelineforthe vehicle width
including theexter iormirrors, atthe cur-
rent steerin gwheel angle(dynamic)
0085 Yellow lanemarking thecourse thetires
will take atthe current steeringwheel
angle (dynamic) 0083
Yellow guidelineatadistance ofapprox-
imately 3ft (1.0 m)from therear area
0084 Vehicle centeraxle (marker assistance)
006B Bumper
006C Red guide lineatadistance ofapprox-
imately 12in(0.30 m)from therear area
The guide linesareshown whenthetrans mis-
sion isin position 005E.
The distance specification sonly apply to
object sthat areatground level. 160
Driving
systemsDriving andparking

0043
Yellow guidelineforthe vehic lewidth
inc luding theexterior mirrors, atthe cur-
ren tste erin gwheel angle(dynamic )
X Stop the vehic lewhen itis almost exactlyin
fron tof the park ingspace.
The white laneshould beasclose toparallel
with thepark ingspace markingaspossible. 0043
Whit eguide lineatthe curr entsteerin g
input
0044 Park ingspace marking
X Turn thesteerin gwheel tothe centerposi-
tion while thevehic leisstat ionar y. 0043
Red guide lineatadistan ceofapprox -
imate ly12 in(0.30m) from therear area
0044 Whit eguide linewithout steerin ginput
0087 Endof park ingspace X
Back upcaref ullyuntilyou have reach edthe
fin alposit ion.
Red guide line0043isthe nat end ofpark ing
space 0087.The vehic leisalmost parallel in
the park ingspace.
180° view 0043
Symbo lfor the 180 °view function
0044 Your vehic le
0087 Warn ingdisplays forthe Park ingPack age
with rearview camer a
You canalso usetherear view camer ato
select a180 °view.
When thePark ingPack agewith rearview cam-
era isoperat ional(Ypage 154), asymbol for
your ownvehic leappears inthe multim edia
syste m.Ifthe Park ingPack agewith rearview
camer awarnin gdisplays areactive, warnin g
displays 0087light upinthe multim ediasyste m
in yellow orred acco rdingly. ATT
ENT ION ASSIST
Imp ortant safet ynotes ATTE
NTIO NAS SIS Thelps youduring long,
mon otonous journeys, suchason highways. It
is act ive inthe rang ebetwee n50 mph
(80 km/h) and 112 mph (180 km/h).
If ATTE NTIO NAS SIS Tdetec tstypic alindic a-
tor sof fatig ueorinc reasin glapses incon cen-
tr ation onthe part ofthe driver ,it suggest s
you takeabreak . 162
Driving
systemsDriving andparking

ATTEN
TIONASSIST asses ses your level offati -
gu eor lapse sin conce ntrationbytaki ngthe
fol lowi ng crite riainto acco unt:
R your perso nal driving style,e.g .stee ring
cha racteri stics
R jou rney detai ls,e.g .time ofdayand length
of jou rney
The functio nality ofATTEN TIONASSIST is
res tricte dand warning sma ybe delaye dor not
occu rat all:
R ifthe roadcond ition ispo or, e.g.if the sur-
fac eis une ven orifther ear epo thol es
R ifther eis astro ngside wind
R ifyo uha ve adop ted aspo rtydriving style
wi th high corne ringspeedsor high rates of
acce lera tio n
R ifyo uar epre domina ntlydriving slow ertha n
50 mph (80km/h )or fas ter than112 mph
(180 km/h )
R ifyo uar ecur rentl yus ing COMAND orma k-
ing atel ephone callwi th it
R ifthe time hasbe en set inco rrectly
R in acti vedriving situa tions, such aswhen
yo ucha nge lanes orcha nge your spe ed
ATTEN TIONASSIST isonl yan aid to the driver .
It mig htnot alwa ysreco gnizefati gueor
incr easing inattenti venessintime orfailto
reco gnizethem atall. The system isnot asu b-
sti tute forawe ll-res ted and attentive driver .
Warni ngand display messagesinthe
multi function display X
Activa teATTEN TIONASSIST using the on-
bo ardcomp uter(Y page 175 ).
If ATTEN TIONASSIST isacti ve,youwi llbe
wa rned nosoo ner than20 minu tesafte r
yo ur jou rney hasbe gun. Yo uthen hearan
inte rmittent warning tonetwice and the
ATT ENTION ASSIST:Tak eaBre ak! ATT
ENTION ASSIST:Tak eaBre ak! mes-
sa ge appe arsin the multifu nctio ndispl ay.
X Ifnece ssary,take abre ak.
X Pre ssthe 0076 or0038 button toconfi rm
the mes sage.
On long jou rney s,take regular bre aks ingoo d
time toallo w yo ursel fto res tpro perly.If yo u
do not take abre akand ATTEN TIONASSIST
sti llde tects increasing lapse sin conce ntra-
tio n,youwi llbe warned again afte r15 minu tes
at the earliest. ATTEN
TIONASSIST isres etwh en youconti nue
yo ur jou rney andstarts asses sing your tire d-
ness again if:
R yousw itch offthe engine
R youtake offyour sea tbe ltand open the
dri ver 'sdo or, e.g.for acha nge ofdri ver sor
to take abre ak
Whe nATTEN TIONASSIST isde acti vated ,the
00D7 symbo lap pe arsin the multifu nctio ndis-
pl ay inthe assista nce graphicsdispl ay.
Vehi cles with CO MA ND: ifawa rning isou t-
pu tin the multifu nctio ndispl ay,a ser vice sta-
tio nsea rch ispe rfor med inthe multimed ia
sy stem .Yo ucan select aser vice stationand
nav igati on tothisser vice stationwi llthen
be gin. Thi sfu nctio ncan beacti vated and
de acti vated inthe multimed iasystem . Lan
eTrack ingpac kag e
Ge neral notes The
Lane Tra cking packag econsi stsofBlind
Spo tAssi st(Y page 163 )and Lane Kee ping
Assi st(Y page 165) .
Bli nd Spo tAs sist Ge
neral notes
Bli nd Spo tAssi stmoni torsthearea son either
si de ofthe vehicletha tar enot visible to the
dri ver with two latera l,rea r-fa cing rada rsen-
sor s.Awa rning displ ayinthe exte riormir rors
dra ws your atte ntionto veh icles detecte din
the moni toredar ea .If yo uthen switch onthe
corr espond ingturn signa lto cha nge lane, you
wi llal so rece iveanoptica land audibl e wa rn-
ing .
Bli nd Spo tAssi stsupp orts youfrom aspe edof
ap pro xima tely20 mph (30km/h ).
For Blind Spo tAssi stto assist you, the rada r
sens orsystem mustbe opera tional . Dri
ving sys tems
163Dr ivi ng andparki ng Z

Indi
catorand warning displa y 0043
Yello wind icat orlamp/ redwarn inglamp
Blin dSpo tAs sist isno tact ive atspee dsbelow
appr oximat ely20mph (30km/h). Vehiclesin
th emon itorin gran geare then notind icat ed.
When BlindSpo tAs sist isact ivat ed, indicat or
lamp 0043intheex terior mirrorslight sup yellow
at spee dsofup to20 mph (30km/ h).At
spe eds above 20mph (30km/h ),the indicator
la mp goesou tand Blind Spot Assistisope ra-
tiona l.
If aveh icleis dete cted within theblind spot
moni toringrang eat spe eds above 20mph
(30 km/h ),wa rning lamp 0043onthe corre -
spo nding sidelights upred .Thi swa rning is
al wa ysemi tted when aveh icleenter sthe blind
spo tmoni toringrang efrom behindorfrom the
sid e.Whe nyo uove rtake aveh icle, the warning
only occu rsifthe differ ence inspe edisless
than 7mph (12km/h ).
The yellow indicator lamp goesou tif reve rse
gea ris enga ged.In this event,Blind Spot
Assi stisno longer active.
The brightne ssofthe indicator/w arninglamps
is ad juste dau toma tically acco rding tothe
amb ient light.
Co llis io n warn ing
If aveh icleis dete cted inthe moni toringrang e
of Blind Spot Assistand youswi tch onthe cor-
res pond ingturn signal ,a dou ble wa rning tone
sou nds. Redwa rning lamp 0043flashe s.Ifthe
turn signal rema inson, vehicles dete cted are
ind icated bythe flashi ng ofred warning
la mp 0043. Thereare nofurther warning tones. Sw
itchin gon Blind Spo tAs sist
X Ma kesure that Blind Spot Assist
(Y page 175 )is acti vate din the on-bo ard
comp uter.
X Tu rn the Smar tKeytopos ition 0048 inthe igni-
tion lock.
Wa rning lamps 0043inthe exter iormir rors
li ght upred forappro xima tely1.5seco nds
and then turnyellow .
Lan eKe epi ng Assist Gen
eral notes Lane
Keeping Assi stmoni torstheareain front
of your veh iclewi th came ra0043, which is
mou nted atthe top ofthe windsh ield .Lane
Kee ping Assi stdete ctslane mar kings onthe
roa dand warns youbef ore youleave your lane
uni ntentio nally.
If yo usel ect km km
on the on-bo ardcomp uterin
the DisplayUni tSpe ed-/Odometer Dis
playUni tSpe ed-/Odometer func-
tion (Ypage 176 ),Lane Keeping Assi stis
acti vestar ting ataspe edof60 km/h .If the
mil es mil
esdispl ayuni tis sel ected ,the assis tance
rang ebeg insat40 mph .
A wa rning maybegiven ifafront wheel passe s
ove ra lane mar king. Itwi llwa rnyouby mea ns
of inter mitte ntvib rati oninthe stee ring wheel
for upto1.5 seco nds.
Impo rtant safetynotes G
WARNI
NG
Lane Keeping Assi stcanno tal wa yscle arly
dete ctlane mar kings .
In such cas es, Lane Keeping Assi stcan:
R give an unne cessarywarning
R not give awa rning
The reisaris kof an acci dent. Dri
ving sys tems
165Dri ving and parkin g
Z