2019 MERCEDES-BENZ SLC ROADSTER width

Active
Distance AssistDISTR ONICha snot yet
de tecte dthe vehiclein front onthe edge of
the roadbe cau seofits nar row width. Thedis-
tance tothe vehiclein front willbe too short.
Ob struc tions and stati onary vehic les Active
Distance AssistDISTR ONICdo es not
bra kefor obsta clesor sta tionar yveh icles. If,
for exa mpl e,the detecte dveh icleturn sa cor-
ner and anobsta cle orsta tionar yveh icleis
rev ealed, Active Distance AssistDISTR ONIC
wi llnot brakefor them .
Cro ssingve hic les Active
Distance AssistDISTR ONICma ymis -
take nlydetect vehicles tha tar ecros sing your
la ne.
If yo uacti vate Active Distance Assist
DISTR ONICund erthe followi ng cond itions, the
veh iclecou ldpu llaw ay uni ntenti onally:
R at traf ficlights with cros sing traf fic, for
exa mpl e
R ifther eis aveh iclein front, aftera cros sing,
wi th the HOLD functio nacti vated HOL
Dfun ction
Ge neral notes The
HOLD functio ncan assist the driver inthe
fol lowi ng situa tions:
R Whe npu lling away,esp ecially on stee p
sl op es
R Whe nma neu vering onstee pslop es
R Whe nwa iting intraf fic
The vehicleis kep tsta tionar ywi thou tthe
dri ver having todepre ssthe brakepedal.
The braking effectiscance led and theHOLD
fu nctio nde acti vated when youde pre ssthe
acce lera tor pedalto pullaw ay.
Impo rtant safetynotes G
WA
RNING
If the vehicleis onl ybra ked using the HOLD
fu nctio n,the vehiclema yrol law ay inthe fol-
lo wi ng situa tions when youleav ethe vehi-
cle :
R ifther eis ama lfunctio nin the system or
in the voltag esu pp ly
R ifthe HOLD functio nis de acti vated by
de pre ssing the acce lera tor pedalor bra ke
pe dal,e.g .by aveh icleoccu pant
The reisaris kof an acci dent.
Alw aysde acti vate the HOLD functio nand
sec urethe vehicleag ainst rolling away
be fore youleav eit.
! 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
Dea ctiva tingtheHOLD functio n(Y page 152 ). Dri
ving sys tems
151Dr ivi ng andparki ng Z

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
Front warning displa y
0044 Addi tiona lmea surement operational readi-
ness indicator forthe Parking Package
wi th rea rvie wcame ra
0087 Rear wa rning displa y
Vehi cles with the Parkin gPac kage with
rear viewcame ra:whe nthe Parking Package
wi th rea rvie wcame raisope rational
(Y page 154 ),ad diti onal measurement opera-
tiona lrea dine ssindi cator 0044appea rsinthe
mul timed iasystem. Ifthe Parking Package
wi th rea rwa rning displa ysare activeorlight
up ,wa rning displa ys0043 and 0087are also acti ve
or light upcorre sponding lyin the multimed ia
sy stem.
"Rev erse parking "func tion Backi
ngup straig htinto aparking space
wi thout steering input 0043
Whiteguide line withou tsteer inginpu t–
vehi clewidth inclu ding theexteri ormirro rs
(sta tic)
0044 Yellow guide line for the vehi clewidth
inclu ding theexteri ormirro rs,atthe cur-
rent steer ingwhe elangl e(dy nami c) 0087
Yellow guide line atadis tance ofapprox-
ima tely 3ft (1.0 m)from the rearar ea
0085 Redgu ide line atadi sta nce ofappro x-
im ate ly12 in(0.3 0m) from the rearar ea
X Ma kesure tha tthe rearvie wcam eraisacti -
va ted (Ypage 159 ).
The lane and theguide lines aresho wn.
X Wi th the helpof wh ite guide line 0043, check
wh eth erthe vehiclewi llfit into theparki ng
sp ace .
X Usi ngwhite guide line 0043 asagu ide, car e-
fu lly ba ck up unti lyo urea chthe end posi-
tio n.
Re dgu ide line 0085 isthe nat the end ofthe
pa rki ng space .The vehicleis almos tpa rallel
in the parki ng space .
Rev erseperpe ndicular parki ngwith
ste ering input 0043
Parki ng space marking
0044 Yellow guide line for the vehiclewi dth
incl uding the exte riormi rro rs, atthe cur-
rent steering wheelang le(dyna mic)
X Driv epa st the parki ng space and bring the
veh icleto asta nds till.
X Ma kesure tha tthe rearvie wcam eraisacti -
va ted (Ypage 159) .
The lane and theguide lines aresho wn.
X Wh ile the vehicleis at asta nds till,tur nthe
ste ering wheelin the directi onofthe park-
ing space untilye llow guide line 0044 reache s
pa rki ng space marking 0043.
X Ma inta inthe steering inputand revers e
car efully. Dr
ivi ng system s
161Drivi ng andparki ng Z

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

Chec
kwheel sand tires for damag eat least
on ce amon th.Chec kwheel sand tires after
driv ingoff-road oron roug hroad s.Dam aged
wheel scan caus ealoss oftirepre ssur e.Pay
part icular attentio nto damag esuc has:
R cut sin thetir es
R punc tures inthetir es
R tears inthetir es
R bulges ontires
R def orm ationor sev ere corrosio non wheel s
Regular lych eck thetir etread dept hand the
co ndi tionof thetread across thewhole width
of all tires (Y page 268). Ifne ces sary, turnth e
fr on twheel sto full lockin ord erto ins pec tth e
inn erside ofthetir esurf ace.
All wheel smust haveavalv ecap topro tect
th evalv eagain stdirt and mois ture.Do not
moun tanyt hingon to thevalv eot her than the
st and ard valvecap orother valvecaps
appro vedbyMer cedes-Ben zfor your vehicle.
Do notuse anyother valvecaps orsyst ems ,
e.g .tir epre ssur emon itorin gsyst ems .
Regular lych eck thepre ssur eof all thetir es
part icular lyprio rto lon gtrips. Adjus tth etir e
pre ssur eas neces sary (Ypage 270).
Obse rveth eno teson theeme rgencyspar e
wheel (Ypage 293).
The servicelife oftires depen ds,amon got her
th ing s,on thefoll owin gfac tors:
R Dr ivin gst yle
R Tire pressur e
R Dis tan cecover ed Not
eson tiretread G
WAR
NING
If th ere isins ufficie nttiretread, thetir etrac-
tio ndec reas es.The tiretread isno longer
able todiss ipatewate r.This increas esthe
ris kof hydr oplan ingwhen theroad surface
is wet ,part icular lywhen theveh icle'sspee d
is no tadapt edtotheroad condi tions.Ther e
is aris kof an acc iden t.
When thetir epre ssur eis toohigh ortoo
low, tires may wear differe ntly at diff ere nt
poin tson thetir etread. Therefore, regularly
ch eck thetir etread dept hand theco ndi tion of
thetread across thewhole widthof all
tir es.
Min imum tiretread dept hon :
R Sum mer tires: 00CEin(3 mm)
R M+S tires: 00CFin(4 mm)
For safe tyreas ons,have thetir es rep lace d
bef ore they reac hth elegally prescribe dmin -
imum tiretread dept h. Mark
ing0043sho wswher eth ebar indicat orfor
tr ead wear (arrow) isint egr atedint oth etir e
tr ead.
Tre adwear indicat ors (TWI )are required by
law. Sixindicat ors are posi tionedon thetir e
tr ead. They arevisible once atread dept hof
appr oximat ely00CD in(1.6 mm)ha sbe en
re ach ed. Ifth is isthecas e,thetir eis so worn
th at itmust berepl aced . Select
ing,mou nting and replacing
tir es
Tire sand wheels
R On lymoun ttir es and wheels ofthesame
type andmake.
Ex cep tion:itis perm issibleto moun ta dif-
fer ent type ormak ein theeven tof aflat
tir e. Obse rveth e"MOE xtend edtires (tires
with run-flat charac terist ics)"sec tion
(Y page 253).
R On lymoun ttir es ofthecor rectsiz eon to the
wheels .
R Break innew tires atmode ratespee dsfor
th efir st 60 miles (100km). Thenew tires
on lyreac hth eir full perf ormanceaft erthis
dist ance. 268
Oper
ationWh eels andtires

Step
2 Example
1 Example
2 Num
berofpeo-
ple inthe vehi-
cle (driver and
occupants) 1 2
Weight
ofthe
occupants Occu-
pant 1:
175 lbs
(80 kg) Occu-
pant 1:
175 lbs
(80 kg)
Occu-
pant 2:
195 lbs
(88 kg) Gross
weight
of all occu-
pants 175
lbs
(80 kg) 370
lbs
(168 kg) Step
3 Example
1 Example
2 Permissible
load (maxi-
mum gross
vehicle weight
rat ing from
the Tire and
Loading Infor-
mat ionplac-
ard minus the
gross weight
of all occu-
pants) 1500
lbs
(680 kg)00F8
175 lbs
(80 kg)=
1325 lbs
(600 kg) 1500
lbs
(680 kg)00F8
370 lbs
(168 kg)=
1130 lbs
(512 kg) Vehicle
identification plate
Even ifyou have calculated thetotal cargo
carefully, youshould stillmake surethatthe
gross vehicle weightratingandthegross axle
weight ratingarenot exceeded. Detailscanbe
found onthe vehicle identification plateonthe
B-pillar onthe driver's sideofthe vehicle
(Y page 279).
Permissible grossvehicle weight: thegross
weight ofthe vehicle, allpassengers andthe
load must notexceed thepermissible gross
vehicle weight. Gross
AxleWeight Rating (GAWR): themaxi-
mum permissible weightthatcanbecarried by
one axle (front orrear axle).
To ensure thatyour vehicle doesnotexceed
the maximum permissible values(grossvehi-
cle weight andmaximum grossaxleweight rat-
ing), have yourloaded vehicle (including driver,
occupants andtheload) weighed onasuitable
vehicle weighbridge. All
about wheelsand tires Uniform
TireQuality GradingStand -
ard s
Overview ofTire Quality Grading
Stand ards Uniform
TireQuality Grading Standards are
U.S. governmen tspecifications. Theirpurpose
is to provide driverswithuniform reliableinfor-
mation ontire performance data.Tiremanu-
facturers havetograde tiresusing threeper-
formance factors:0043tread weargrade, 0044
tract iongrade and0087temperature grade.
These regulations donot apply toCanada.
Nevertheless, alltires soldinNorth America
are provided withthecorrespondin gqual ity
grading markings onthe sidewal lof the tire.
Quality gradescanbefound, whereapplicab le,
on the tire sidewal lbetween treadshoulder
and maximum sectionwidth.
Example:
R Tread weargrade: 200
R Tra ction grade: AA
R Temper aturegrade: A
All passenger cartires must confor mto the
statutory safetyrequirements inaddition to
these grades. All
about wheelsand tires
281Wheels andtires Z

Tire
labelin g
Ov erv iew 0043
UniformTire Qu ality Grad ing Stand ard
(Y page 286 )
0044 DOT, Tire Ide ntifi cationNumbe r
(Y page 285)
0087 Maxim um tire load (Ypage 285 )
0085 Maxim um tire pressu re(Y page 273 )
0083 Manuf actu rer
0084 Tire ma teri al(Y page 286 )
006B Tire size designa tion,load -be aring capacity
and spee dra ting (Ypage 283 )
006C Loadind ex(Y page 285 )
006D Tire nam e
The markin gsdescri bedab ove areon the tire
in ad ditio nto the tire nam e(sales designa tion)
and themanuf actu rer'snam e.
i Ti
re data isveh icle-s pecificand mayde vi-
ate fromthe data inthe exampl e.
Tire size des ignati on,lo ad-b earing
ca pac ityand speedratin g G
WA
RNING
Excee ding the stated tire load -be aring capa-
city and theappro ved maxim um spee d
cou ldlead totire dama georthe tire burst-
ing .The reisaris kof acc ident.
The refore ,onl yus etire typesand sizes
ap pro ved foryour veh iclemod el.Ob ser ve the
tire load rating andspee dra ting
req uired foryour veh icle. 0043
Tire width
0044 Nom inalas pe ct ratio in%
0087 Tire cod e
0085 Rim diam ete r
0083 Loadbe aring index
0084 Spe edrating
Ge neral: dependi ng on the manuf actu rer's
sta nda rds,the size imp rinted inthe tire wall
ma ynot conta inany letters orma yconta in
one letter thatpre ced esthe size descri ption.
If the reisno letter preced ingthe size descri p-
tio n(a ssho wnabove ):the searepa sse nge r
veh icletire sacc ording toEur opeanma nuf ac-
tur ing standa rds.
If "P "pre ced esthe size descri ption: theseare
pa sse nge rveh icletire sacc ording toU.S. man-
uf actu ringsta nda rds.
If "L T" pre ced esthe size descri ption: theseare
li ght truck tire sacc ording toU.S. manuf actu r-
ing standa rds.
If "T "pre ced esthe size descri ption: comp act
eme rgency wheelswith high tire pressu retha t
ar eonl yde signe dfor temp oraryusein an
eme rgency .
Tire width: tirewidth 0043sho wsthe nomi nal
tire width inmil limete rs.
He ight-w idth ratio :as pe ct ratio 0044 isthe size
ra tio betwe enthe tire height and tirewidth
and issho wninpe rcen t.The aspe ct ratio is
cal cul ate dby divid ing the tire width bythe tire
he ight.
Tire code: tire code0087 speci fiesthe tire type.
"R "rep resents radial tire s;"D" represents
di ag ona ltire s;"B" represents diag ona lra dial
tire s. Al
labo utwhee lsan dtire s
283Whe elsand tires Z

Rim
Thi sis the partof the whe elon whi chthe tire
is mou nted.
GAW R(Gro ssAxleWei ght Ratin g)
The GAW Ris the maxi mum grossaxl ewe igh t
rati ng. The actu alloa don anaxlemus tneve r
excee dthe gros saxl ewe igh trati ng. The gros s
axl ewe igh trati ngcan befou ndonthe vehi cle
id entif ication plate onthe B-pi llar on the driv-
er's side.
Spe edrating
The speedrati ngispa rtof the tire identif ica-
tion. Itspe cifiesthe speedrang efor whi chthe
tire isap pro ved .
GVW (GrossVehi cle Wei ght)
The gros svehi cleweigh tincl udes the weigh t
of the vehi cleincluding fuel,tool s,the spare
whe el,acce ssoriesinsta lled, occu pants, lug-
ga ge and thedrawbarnose weigh t,ifap plica -
bl e. The gros svehi cleweigh tmus tnot excee d
the gros svehi cleweigh trati ngGVW Ras spe ci-
fie don the vehi cleidentif ication plate onthe
B-pi llar on the driver' ssid e.
GVWR (GrossVehi cle Wei ght Ratin g)
The GVW Ris the maxi mum permis siblegros s
we igh tof aful lyloa ded vehicle(the weigh tof
the vehi cleincluding allacce ssories,occu -
pa nts, fuel,lu gga geand thedrawbarnose -
we igh t,ifap plica ble). The gros svehi cleweigh t
rati ngisspe cified on the vehi cleidentif ication
pl ate onthe B-pi llar on the driver' ssid e.
Maxi mum loaded vehicle we ight
The maxi mum weigh tis the sum of:
R the curb weigh tof the vehi cle
R the weigh tof the acce ssories
R the loadlimit
R the weigh tof the facto ryinsta lled opti onal
equ ipment
Ki lopasc al(kP a)
Metri cuni tfor tire pressu re.6.9 kPa corre -
spo nds to1psi .Another unitfor tire pressu re
is ba r.100 kilopa scals(kPa )are the equivalent
of 1ba r. Lo
ad index
In addition tothe load-be aring index, the load
ind exmay also be imp rinte don the sidewallof
the tire.Thi sspe cifiesthe load-be aring cap a-
city more precise ly.
Curb weight
The weigh tof avehi clewith stand ardequip-
ment including the maxi mum capacityof fue l,
oil and coolant. Italso incl udes the air-condi -
tioni ngsystem andoptionalequ ipment ifthes e
are insta lled inthe vehi cle,bu tdoe snot
incl udepa sse ngers orlugga ge.
Maxi mum load rating
The maxi mum loadrati ngisthe maxi mum per-
mis siblewe igh tin kilogra msorlbsfor whi cha
tire isap pro ved .
Maxi mum permis sibl etire press ure
Ma ximu mper mis sibletire pressu refor one
tire .
Maxi mum load on onetire
Ma ximu mloa don one tire.Thi sis cal cul ate d
by divid ing the maxi mum axleloa dof one axle
by two.
PSI (pounds persquare inch)
A stand ardunitof mea sure for tire pressu re.
As pec tratio
Re lations hipbetw eentireheight and tirewidth
in per cent.
Tire press ure
Thi sis pre ssu reinsi dethe tire applying anout-
wa rdforce toeach squ are inch ofthe tire's
su rfa ce. The tirepressu reisspe cified in
pou nds persquare inch (psi) ,in kilopa scal
(kPa )or inba r.The tirepressu resho uld only
be corre ctedwhenthe tiresare cold .
Co ldtire press ure
The tiresare cold :
R ifthe vehi clehasbee npa rked with the tires
ou tof direct sunli ght foratleas tthree hours
and
R ifthe vehi clehasnot beendri ven further
than 1mil e(1.6 km) Al
labo utwh eelsand tires
287Wheelsand tires Z