2020 MERCEDES-BENZ SLC ROADSTER width

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 etot his vehicle willbetoo short.
Nar row vehicles Act
ive Distan ceAssist DISTRONIC hasnotyet
detect edthe vehicle infront onthe edge of
the road because ofits narrow width.Thedis-
tanc etot he vehicle infront willbetoo short.
Obstru ctionsandstationary vehicles Act
ive Distan ceAssist DISTRONIC doesnot
brake forobstacles orstation aryvehicles. If,
for example, thedetect edvehicle turnsacor-
ner and anobstacle orstation aryvehicle is
revealed, Active Distan ceAssist DISTRONIC
will notbrake forthem.
Crossing vehicles Act
ive Distan ceAssist DISTRONIC maymis-
taken lydetect vehicles thatarecrossin gyour
lane.
If you activate Active Distan ceAssist
DIS TRONIC underthefollowing conditions,the
vehicle couldpullaway unintention ally:
R at traff iclights withcrossin gtraff ic,for
example
R ifthere isav ehicle infront ,after acrossin g,
with theHOLD functionactivated Driving
systems
151Drivingandparking 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,o rafter driving forwards ashort distance.
The inner segment softhe warning indicator
are display edinred ifthere isac omplete sys-
tem failure. Theindicator lampinthe
PARKTRONIC buttonlightsup.
If the system failsatthe rear ofthe vehicle:
R the rear segment sareshown inred when
backing up.
R the rear segment sarehidden 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 sint he following positions:
R very close tothe rear bumper
R under therear bumper
R in close range above thehandle onthe trunk
lid
! Object
snotatground levelmayappear to
be further awaythantheyactually are,e.g.:
R the bumper ofap arked vehicle
R the drawbar ofat railer
R the ball coupling ofat railer towhitch
R the rear section ofan HGV
R as lanted post
Use theguidelines onlyfororient ation.
Approach objectsnofurther thanthebot-
tom- most guideline. 0043
Yellow guidelineatad istance 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 guidelineatad istance ofapprox-
imately 3ft(1.0 m)from therear area
0084 Vehicle centeraxle (marker assistance)
006B Bumper
006C Red guide lineatad istance 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. Driving
systems
161Drivingandparking Z

0043
Front warning displa y
0044 Addi tiona lmeasur ement operational readi-
ness indicator forthe Parking Package
wi th rea rviewc ame ra
0087 Rear wa rning displa y
Vehi cles with the Parkin gPackage with
rear viewc ame ra:whe nthe Parking Package
wi th rea rviewc ame 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 rwarning displa ysare activeorlight
up ,w arning 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(dynami c) 0087
Yellow guide line atad istance ofapprox-
ima tely 3ft(1.0 m)from the reararea
0085 Redg uide line atad ista nce ofappro x-
im ate ly12 in(0.3 0m)fro mt herea rarea
X Ma kesure tha tthe rea rviewc amera isacti -
va ted (Ypage 160 ).
The lane and theguidel ines ares hown.
X Wi th the helpof wh ite guidel ine 0043 ,che ck
wh eth erthe vehiclew illf it into theparki ng
sp ace .
X Usi ngwhite guidel ine 0043 asag uide ,care-
fu llyb acku pu ntilyou rea chthe end posi-
tio n.
Re dg uide line 0085 isthe natthe end ofthe
pa rki ng space .The veh iclei sa lmostp aralle l
in the parki ng space .
Rev erseperpe ndicular parki ngwith
ste ering input 0043
Parki ng space marking
0044 Yellow guidel inef or the vehiclew idth
incl uding the exte riorm irro rs, atthe cur-
rent steering wheelang le(dyna mic)
X Driv epastthe parki ng space and bring the
veh iclet oas tands till.
X Ma kesure tha tthe rea rviewc amera isacti -
va ted (Ypage 160) .
The lane and theguidel ines ares hown.
X Wh ilet he veh iclei sa tas tands till,tur nthe
ste ering wheelint he directi onofthe park-
ing space untilyello wg uide line 0044 reache s
pa rki ng space marking 0043.
X Ma inta inthe steering inputand revers e
car efully. 16
2 Dr
ivi ng system sDrivi ng andp arki ng

0043
Yellow guidelineforthe vehic lewidth
inc luding theexterior mirrors, atthe cur-
ren tsteerin gwheel angle (dynamic )
X Stop the vehic lewhen itis almost exactlyin
fron tofthe 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 lineatad istan ceofapprox -
imate ly12 in(0.30m )from therear area
0044 Whit eguide linewithout steerin ginput
0087 Endo fpark ing space X
Back upcaref ullyuntilyou have reach edthe
fin alposit ion.
Red guide line0043isthe natend ofpark ing
space 0087.Thevehic leisalmost parallel in
the park ingspace.
180° view 0043
Symbo lfor the 180 °view func tion
0044 Your vehic le
0087 Warn ingdisplays forthe Park ingPack age
with rearview camer a
You canalso usetherear view camer ato
selec ta180°v iew.
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 NASSISTh elps youduring long,
mon otonous journeys, suchason highways. It
is act ive inthe rang ebetwee n50m ph
(80 km/h) and 112 mph (180 km/h).
If ATTE NTIO NASSISTd etec tstypic alindic a-
tor so ffatig ueorinc reasin glapses incon cen-
tr ation onthe part ofthe driver ,its uggest s
you takeab reak. Driving
systems
163Driving andparking Z

Chec
kwheel sand tires for damag eatleast
on ce am onth.C hec kwheel sand tires after
driv ingoff-road oron roug hroad s.Dam aged
wheel scan caus ealossoftirep ressur e.Pay
part icular attentio nt od amag esucha s:
R cut sint he tires
R punc tures inthet ires
R tears inthet ires
R bulges ontires
R def orm ationorsevere corrosio nonw heel s
Regular lych eck thet iret read dept hand the
co ndi tiono fthe tread across thew hole width
of all tires (Y page 269). Ifne ces sary, turnthe
fr on tw heel stof ull loc kino rder to ins pec tthe
inn erside ofthet ires urface.
All wheel smust have avalvec ap topro tect
th ev alvea gain stdirt and mois ture.Do not
moun tanyt hingo ntot he valv eother than the
st and ard valvecap orother valvecaps
appro vedbyMer cedes-Ben zfor your vehicle.
Do notu se any other valvecaps orsyst ems ,
e.g .tirep ressur emonito rin gs yst ems .
Regular lych eck thep ressur eofallth et ires
part icular lyprio rtol on gt rips. Adjus tthe tire
pre ssur easnecessary (Ypage 271).
Obse rvet he noteso nthe eme rgencys par e
wheel (Ypage 294).
The servicelife oftires depen ds,amon gother
th ing s,on thef ollowin gfactors:
R Dr ivin gstyle
R Tire pressur e
R Dis tan cecover ed Not
eson tiret read G
WAR
NING
If th ere isins ufficie nttiret read, thet iret rac-
tio nd ecreas es.The tiret read isno longer
able todiss ipatewater.This increas esthe
ris ko fhydr oplan ingwhen ther oad surface
is wet ,part icular lywhen thev ehicle 'sspee d
is no ta dapt edtother oad condi tions.T her e
is ar isko fana cciden t.
When thet irep ressur eist oo high ortoo
low, tires may wear differe ntly at diff ere nt
poin tson thet iret read. Ther efore, regularly
ch eck thet iret read dept hand thec onditio n of
thet read acr oss thew hole widthofall
tir es.
Min imum tiret read dept hon:
R Sum mer tires: 00CEin(3 mm)
R M+S tires: 00CFin(4 mm)
For safe tyreas ons,have thet ires rep lace d
bef ore they reac hthe legally prescribe dmin-
imum tiret read dept h. Mark
ing0043sho wswher ethe bar indicat orfor
tr ead wear (arrow) isint egr atedintot he tire
tr ead.
Tre adwear indicat ors (TWI )are req uired by
law. Sixindicat ors are posi tionedo nthe tire
tr ead. They arevisible once atread dept hof
appr oximat ely00CD in(1.6 mm)has been
re ach ed. Ifth is isthec ase, thet irei ss ow orn
th at itmust berepl aced . Select
ing,mou nting and replacing
tir es
Tire sand wheels
R On lymoun ttires and wheels ofthes ame
type andmake.
Ex cep tion:itis perm issibleto moun tadif-
fer ent type ormak eint he even tofaf lat
tir e. Obse rvet he "MOE xtend edtires (tires
with run-flat charac terist ics)"sec tion
(Y page 254).
R On lymoun ttires ofthec orrec tsizeo ntot he
wheels .
R Break innew tires atmode rates pee dsfor
th ef irst 60 miles (100km). The new tires
on lyreac htheirfull perf ormanceafter this
dist ance. Oper
ation
269Wheels andtires Z

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 280).
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-
formanc efactors: 0043tread weargrade, 0044
tract iongrade and0087temperature grade.
These regulations donot apply toCanada.
Nevertheless, alltires soldinNorth America
are provided withthecorrespondin gquality
grading markings onthe sidewal lofthe 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 mtothe
statutory safetyrequirements inaddition to
these grades. 282
All
about wheelsand tiresWheels andtires

Tire
labelin g
Ov erv iew 0043
UniformT ireQ ualityG radin gS tand ard
(Y page 287 )
0044 DOT, Tire Ide ntifi cationNumbe r
(Y page 286)
0087 Maxim um tire load (Ypage 286 )
0085 Maxim um tire pressu re(Y page 274 )
0083 Manuf actu rer
0084 Tire ma teri al(Y page 287 )
006B Tire size designa tion,load -be aring capacity
and spee dr ating (Ypage 284 )
006C Loadind ex (Y page 286 )
006D Tire nam e
The markin gsdescri beda bove areo nthe tire
in ad ditio nt ot he tire nam e(sales designa tion)
and themanuf actu rer'snam e.
i Ti
re data isveh icle-s pecificand maydevi-
ate fromt hedata inthe exampl e.
Tire size des ignati on,loa d-b eari ng
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 re isar isko faccident.
The refore ,onlyu setire typesand sizes
ap pro ved foryour veh iclem odel.O bserve the
tire load rating andspee dr ating
req uired foryour veh icle. 0043
Tire width
0044 Nom inalasp ec tratio in%
0087 Tire cod e
0085 Rimd iame ter
0083 Loadbearing 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 ynotconta inany letters orma yconta in
one letter thatpreced esthe size descri ption.
If the reisno letter preced ingthe size descri p-
tio n(as sho wnabove ):the searep asse nge r
veh iclet iresa ccord ing toEur opeanm anufac-
tur ing standa rds.
If "P "p reced esthe size descri ption: theseare
pa sse nge rvehiclet iresa ccord ing toU.S. man-
uf actu rings tanda rds.
If "L T" pre ced esthe size descri ption: theseare
li ght truck tire saccord ing toU.S. manuf actu r-
ing standa rds.
If "T "p reced esthe size descri ption: comp act
eme rgency wheelswith high tire pressu retha t
ar eo nlyd esigne df or temp oraryusei na n
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 dbydivid ing the tire width bythe tire
he ight.
Tire code: tire code0087 speci fiest he tire type.
"R "r ep res ents radial tire s;"D" represents
di ag ona ltire s;"B" represents diag ona lrad ial
tire s. 28
4 Al
la bo ut whee lsan dt iresWhe elsa nd tire s

Rim
Thi sist he partof the whe elon whi chthe tire
is mou nted.
GAW R(Gro ssAxleWei ght Ratin g)
The GAW Risthe maxi mum grossaxlew eigh t
rati ng. The actu alloa do nana xlem ustn eve r
excee dthe gros saxlew eigh trati ng. The gros s
axl ew eigh trati ng can 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 cleW eight)
The gros svehi cle weigh tincl udes the weigh t
of the vehi cleincluding fuel,tool s,the spare
whe el,a cce ssoriesinsta lled, occu pants, lug-
ga ge and thedrawbarnose weigh t,ifap plica -
bl e. The gros svehi cle weigh tm ustn ot excee d
the gros svehi cle weigh trati ng GVW Rasspeci-
fie do nthe vehi cleidentif ication plate onthe
B-pi llar on the driver' sside.
GVWR (GrossVehi cleW eight Ratin g)
The GVW Risthe maxi mum permis siblegros s
we igh tofa fullyloa ded vehicle(the weigh tof
the vehi cleincluding alla cce ssories,occu -
pa nts, fuel,lu gga geand thedrawbarnose -
we igh t,ifap plica ble). The gros svehi cle weigh t
rati ngisspe cified on the vehi cleidentif ication
pl ate onthe B-pi llar on the driver' sside.
Maxi mum loaded vehicle we ight
The maxi mum weigh tist he sumo f:
R the curb weigh tofthe vehi cle
R the weigh tofthe acce ssories
R the loadlim it
R the weigh tofthe facto ryinsta lled opti onal
equ ipment
Ki lopasc al(kP a)
Metri cunitf or tire pressu re.6.9 kPa corre -
spo nds to1p si.A nother unitfor tire pressu re
is ba r.100 kilopa scals(kPa )are the equivalent
of 1b ar. Lo
ad index
In addition tothe load-be aring index, the load
ind exmay also be imp rinte donthe sidewallo f
the tire.Thiss pecifi esthe load-be aring cap a-
city more precise ly.
Curb weight
The weigh tofa vehi 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,but doe snot
incl udep asse ngers orlugga ge.
Maxi mum load rating
The maxi mum loadrating isthe maxi mum per-
mis siblewe igh tink ilogra msorlbsf or whi cha
tire isap pro ved .
Maxi mum permis sibl et ire press ure
Ma ximu mpermis sibletire pressu refor one
tire .
Maxi mum load on onet ire
Ma ximu mloado nonetire .Thisi sc alcul ate d
by divid ing the maxi mum axleloa do fone axle
by two.
PSI (pounds persquare inch)
As tand ardunitofm easure for tire pressu re.
As pec tratio
Re lations hipbetw eentireheight and tirewidth
in per cent.
Tire press ure
Thi sisp ressu 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) ,ink ilopa scal
(kPa )orinb ar.T he tire pressu resho uldo nly
be corre ctedwhenthe tire sarecold .
Co ldtire press ure
The tiresarecold :
R ifthe vehi clehasb eenp arked with the tires
ou to fdirect sunli ght foratleas tthree hours
and
R ifthe vehi clehasn otbee ndriven further
than 1mile( 1.6 km) 288
Al
la bo ut wh eelsand tiresWhee lsand tires