2019 MERCEDES-BENZ SL ROADSTER width

messa
gewillapp ear onthe multifu nctiondis-
pla yfor app roximatel yfive seconds.
Tips fordriving withActive Distance
Ass istDISTRONIC Gene
ralnotes
The follo wing contains descriptionsofcertain
road andtraffic conditions inwhi chyou must
be particu larlyattentive. Insuch situations,
brake ifnecessary .Active Distance Assist
DISTRONIC willthen bedea ctivated.
Corne ring,going into andcomi ngout of
a ben d The
ability ofActive Distance Assist
DISTRONIC todetect vehicleswhen cornering
is limi ted. Yourvehicl emay brake unexpect-
edly orlate.
Vehic lestraveling onadifferen tlin e Active
Distance AssistDISTRONIC maynot
detect vehiclesthat arenot drivi nginthe mid-
dle oftheir lane. Thedista ncetothe vehicl ein
front willbe too short. Other
vehicleschangi nglane s Active
Distance AssistDISTRONIC hasnot
detected thevehicl ecutting inyet. Thedis-
tance tothis vehicl ewil lbe too short.
Narr owvehic les Active
Distance AssistDISTRONIC hasnotyet
detected thevehicl ein front onthe edge of
the road becau seofits narrow width.The dis-
tance tothe vehicl ein front willbe too short.
Obstructio nsand stationary vehicles Active
Distance AssistDISTRONIC doesnot
brake forobstacl esorstationary vehicles.If,
for exampl e,the detected vehicleturns acor-
ner and anobstacl eor stationary vehicleis 162
Drivi
ngsystemsDrivi ngand park ing

Under
thefollowi ngcircumstances, therear
view camera willnotfunction, orwill function
in alimited manner:
R ifthe trunk lidisopen
R in heavy rain,snow orfog
R at night orinvery dark places
R ifthe camera isexposed tovery bright light
R ifthe area islit by fluorescent bulbsor LED
lighting (thedispla ymay flicker)
R ifthere isasudden changeintemperature,
e.g. when driving intoaheated garagein
winter
R ifthe camera lensisdirty orobstructed.
Observe thenotes oncleaning
(Y page 275)
R ifthe rear ofyour vehicle isdamage d.Inthis
case, havethecamera position andsetting
checked ataqual ified speciali stworkshop.
The field ofvision andother functions ofthe
rear view camera mayberestrict eddue to
additional accessories onthe rear ofthe vehi-
cle (e.g. license plateholder, bicycle rack).
On vehicles with<004B0048004C004A004B0057001000440047004D00580056005700440045004F
0048[ chassis,
leaving thestandard heightcanresult ininac-
curacies inthe guide lines,depending ontech-
nical conditions.
i The
cont rast ofthe displa ymay beaffec-
ted bythe sudden presence ofsunlight or
other lightsources, e.g.when exiting a
garage. Payparticular attentioninthis situa-
tion.
i If
usabi lityisseverely restricted,e.g. due
to pixel errors, havethedispla yrepaired or
replaced.
Activating/ deactivating therear view
camera X
To activate: makesurethattheSmartKey
is in position 0048inthe ignition lock.
X Make surethattheActivation byRgear Activation
byRgear
function isselected inthe multimedia sys-
tem; seetheDigital Operator's Manual.
X Engage reverse gear.
The multimedia systemshowsthearea
behind thevehicle withguide lines.
The image fromtherear view camera is
avail able throughout themaneuvering proc-
ess. To
deactivate: therear view camera deacti-
vates ifyou shift thetransmission toposition
005D, orafter driving forwards ashort distance.
The inner segments ofthe warning indicator
are displa yedinred ifthere isacomplete sys-
tem failure.The indicator lampinthe
PARKTRONIC buttonlightsup.
If the system failsatthe rear ofthe vehicle:
R the rear segments areshown inred when
backing up.
R the rear segments arehidden whendriving
forwards.
Displays inthe multim ediasystem The
rear view camera mayshow adistorted
view ofobstacles, showthemincorrect lyor
not atall. The rear view camera doesnotshow
objects inthe followi ngpositions:
R very close tothe rear bumper
R under therear bumper
R in close range above thehandle onthe trunk
lid
! Objects
notatground levelmayappea rto
be further awaythan theyactually are,e.g.:
R the bumper ofaparked vehicle
R the drawba rof atrailer
R the ball coupling ofatrailer towhitch
R the rear section ofan HGV
R aslanted post
Use theguide linesonlyfororientation.
Approach objectsnofurther thanthebot-
tom-most guideline. 0043
Yello wguide lineatadistance ofapprox-
imately 13ft(4.0 m)from therear area
0044 White guidelinewithout steering input–
vehicle widthincluding theexterior mirrors
(static) 180
Driving
systemsDriving andparking

0087
Yellow guidelineforthe vehic lewidth
inc luding theexterior mirrors, atthe cur-
ren tste erin gwheel angle(dynamic )
0085 Yellow lanemark ingthe cours ethe tires
will takeat the curr entsteerin gwheel
angle (dynamic ) 0083
Yellow guidelineatadistan ceofapprox -
imate ly3ft (1. 0m) from therear area
0084 Vehic lecen teraxle (mark erassist ance)
006B Bumper
006C Red guide lineatadistan ceofapprox -
imate ly12 in(0. 30 m)from therear area
The guide linesareshown whenthetransm is-
sion isin posit ion005E.
The distan cespecif ications onlyapply to
obje ctsthat areatgroun dlevel. 0043
Frontwarnin gdisplay
0044 Addit ional measurem entoperat ionalreadi-
ness indicatorforthe Park ingPack age
with rearview camer a
0087 Rear warnin gdisplay
Vehicles withthePar king Packa gewith
rea rview camer a:when thePark ingPack age
with rearview camer ais operat ional
(Y page 173), addition almeasurem entopera-
tion alreadin essindic ator0044appears inthe
multim ediasyste m.Ifthe Park ingPack age with
rearwarnin gdisplays areactive orlight
up, warnin gdisplays 0043and 0087are also active
or light upcor respon dinglyinthe multim edia
syste m.
"Rever separking" funct ion Ba
cking upstraight intoapa rking space
withou tsteer inginpu t 0043
Whit eguide linewithout steerin ginput –
vehic lewidth including theexterior mirrors
(stat ic)
0044 Yellow guidelineforthe vehic lewidth
inc luding theexterior mirrors, atthe cur-
ren tste erin gwheel angle(dynamic )
0087 Yellow guidelineatadistan ceofapprox -
imate ly3ft (1. 0m) from therear area
0085 Red guide lineatadistan ceofapprox -
imate ly12 in(0. 30 m)from therear area
X Make surethattherear view camer ais act i-
vate d(Y page 180).
The lane andtheguide linesareshown .
X With thehelp ofwhite guide line0043,chec k
wheth erthe vehic lewill fitintothe park ing
space.
X Usin gwhite guide line0043asaguide, care-
fully back upunt ilyou reach theend posi-
tion .
Red guide line0085isthe nat the end ofthe
park ingspace. Thevehic leisalmost parallel
in the park ingspace. Driving
systems
181Driving andparking Z

Reve
rseperpe ndicularparkin gwi th
ste ering input 0043
Parking spacemar king
0044 Yellow guide line for the vehi clewidth
incl uding the exteri ormirr ors, atthe cur-
rent steering wheelang le(dyna mic)
X Drive past the parking spaceand bring the
vehi cletoastand still.
X Ma kesure that therearvie wcame raisacti -
vate d(Y page 180).
The lane and theguide lines areshown.
X Whi lethe vehi cleisat astand still,turn the
stee ring wheelin the directi onofthe park-
ing spaceunti lye llow guide line 0044 reaches
pa rking spacemar king 0043.
X Ma inta inthe stee ring inputand reverse
care fully. 0043
Yellow guide line for the vehi clewidth
incl uding the exteri ormirr ors, atthe cur-
rent steering wheelang le(dyna mic)
X Stop thevehi clewhe nit is almost exactly in
front ofthe parking space.
The whitelane sho uld be asclo setoparal lel
wi th the parking spacemar king aspos sible. 0043
Whiteguide line atthe curr entstee ring
inp ut
0044 Parking spacemar king
X Tu rn the stee ring wheelto the center posi-
tion whilethe vehi cleisstati onary. 0043
Redgu ide line atadi stance ofappro x-
ima tely 12in(0.30 m)from the rearar ea
0044 Whiteguide line withou tste ering input
0087 End ofparki ng space
X Bac kup car efully unti lyo uha ve rea che dthe
fin alpo sitio n.
Re dgu ide line 0043 isthe nat end ofparki ng
sp ace 0087.The vehicleis almos tpa rallel in
the parki ng space . 18
2 Dr
ivi ng system sDrivi ng andparki ng

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 294). 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 296).
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 278).
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. 294
Oper
ationWh eels andtires

Gross
AxleWeig htRating (GAWR) :the maxi-
mum permiss iblewei ght that canbecarried by
one axle (front orrear axle) .
To ensure thatyourvehicle doesnotexceed
the maximu mpermiss iblevalu es(gross vehi-
cle weight and maximu mgross axleweight rat-
ing), have yourloa ded vehicle (includingdriver,
occupa ntsand theload)wei ghed onasuita ble
vehicle weighbrid ge. All
about wheelsand tires Unifo
rmTire Quality Grading Stand-
ards
Overvie wof Tire Quality Grading
Standards Uniform
TireQual ityGrad ingStandards are
U.S. government specifications. Theirpurpose
is to provid edrivers withuniform reliableinfor-
mation ontire performa ncedata. Tiremanu-
facturers havetograde tiresusing threeper-
formance factors:0043tread weargrade ,0044
traction gradeand0087temperatu regrade .
These regulations donot applyto Cana da.
Neverthele ss,alltires soldinNorth America
are provid edwith thecorrespondi ngqua lity
gradi ngmarkings onthe sidew allofthe tire.
Qual itygrade scan befound, whereapplicable,
on the tire sidew allbetwee ntread shoulder
and maximu msection width.
Example:
R Treadwear grade:200
R Traction grade:AA
R Temperatur egrade: A
All passe ngercartires must conform tothe
statutory safetyrequirements inadd ition to
these grades. i
The
actual valuesfor tires arevehicle -spe-
cific andmay devia tefrom thevalu esinthe
ill ustration.
Treadwear The
treadw eargrade isacompara tiverating
base don the wea rrate ofthe tire when tested
under controlled conditions onaspecifi edU.S.
government course.Forexampl e,atire grade d
150 wouldwea rone andone-half timesaswel l
on the government testtrack asatire grade d
100.
The relative performa nceoftires depends
upon theactual conditions oftheir use,how-
ever, andmay depa rtsignifi cantly fromthe
norm duetovaria tions indriving habits,ser-
vice practices anddifferences inroad charac-
teristics andclimate.
Traction G
WARNING
The traction gradeassigned tothis tireis
base don straight-ahe adbraking traction
tests, anddoes notinclud eaccelera tion,
cornering, hydroplaning, orpeak traction
characteris tics.
! Avoid
wheelspin.This canleadto dama ge
to the drive train.
The traction grades– from highe stto lowe st–
are AA, A,Band C.Those gradesreprese ntthe
tire's ability tostop onwet paveme ntas meas-
ured under controlled conditions onspecifi ed
government testsurface sof aspha ltand con-
crete. Atire marked Cmay have poortraction
performa nce.
The safe speed onawet, snow covered oricy
road isalw ayslowe rthan ondry road surfa-
ces.
You shoul dpay specia lattention toroad con-
ditions whentemperatu resare arou ndfreezing
point.
Mercedes -Benzrecommends aminimum tread
depth of00CF in(4 mm) onallfour winter tires.
Observe thelega llyrequi redminimum tire
tread depth (Ypage 294). Winter tirescan
reduce thebraking distance onsnow-covered
surface sin compari sonwith summer tires.The
braking distance isstill much further thanon 306
Al
labout wheelsand tiresWheel sand tires

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 impri nted 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 inmi llim ete 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. Op
tional ly,tire swi th ama xim um spee dof ove r
149 mph (240km/h )ma yha ve "ZR" inthe
si ze descri ption, dependi ng on the manuf ac-
tur er(e.g. 245/4 0ZR 18) .
Rim diamete r:rim diam ete r0085 isthe diam e-
ter ofthe bead seat, not thediam ete rof the
rim flange .Th erim diam ete ris sp eci fiedin
inch es(in).
Lo ad-b earingin dex :lo ad -be aring index0083 is
a num erical cod etha tsp eci fiesthe maxim um
lo ad -be aring capacityof atire .
Do not overload the tiresby exce eding the
sp eci fiedload limi t.Th ema xim um permi ssible
lo ad can befou ndonthe vehicle'sTire and
Loa ding Info rma tionplaca rdon the B-pi llar on
the driver 'sside (Ypage 303) .
Exam ple:
Loa d-bearin gind ex91 indicates ama xim um
lo ad of1,3 56 lb(615 kg)tha tthe tirescan
be ar.For furthe rinf orm ation onthe maxim um
tire load inkilog rams and lbs, see
(Y page 310 ).
For furthe rinf orm ation onthe load bearing
ind ex, see"L oa dind ex" (Ypage 309) .
Spe edratin g:spee dra ting 0084speci fiesthe
ap pro ved maxim um spee dof the tire.
i Ti
re data isveh icle-s pecificand mayde vi-
ate fromthe data inthe exampl e.
Re gardl essof the spee dra ting ,al wa ysobserve
the spee dlimi ts. Drivecar efully and adapt
yo ur drivin gsty leto the trafficcond itions . Summe
r
tire s In
dex Spe
edratin g Q up
to100 mph (160km/h ) R up
to106 mph (170km/h ) S up
to112 mph (180km/h ) T up
to118 mph (190km/h ) H up
to130 mph (210km/h ) V up
to149 mph (240km/h ) W up
to168 mph (270km/h ) Y up
to186 mph (300km/h ) ZR
...Y up
to186 mph (300km/h ) 30
8 Al
labo utwhee lsan dtire sWhe elsand tires

Maximum
loadedvehi cleweight
The maximu mwei ght isthe sum of:
R the curb weight ofthe vehicl e
R the weight ofthe accesso ries
R the loadlimi t
R the weight ofthe factory installedoptiona l
equ ipme nt
Kil opasc al(kPa)
Metric unitfortire pressu re.6.9 kPa corre-
sponds to1psi. Another unitfortire pressu re
is bar. 100 kilop ascals(kPa) arethe equivalent
of 1bar.
Load index
In add ition tothe load-bea ringindex, theload
index mayalsobe impri nted onthe side wallof
the tire. This speci fiestheload-bea ringcapa -
city more precis ely.
Curb weight
The weight ofavehicl ewith standard equip-
ment includ ingthe maximu mcapa cityoffuel ,
oil and coola nt.Itals oinclud esthe air-condi -
tioning system andoptiona lequ ipme ntifthese
are install edinthe vehicl e,but does not
includ epass engers orlug gage .
Maximum loadrating
The maximu mloa drating isthe maximu mper-
missi bleweight inkilog rams orlbs forwhi cha
tire isapp roved.
Maximum permissibletire pressure
Maximu mpermi ssibletire pressu refor one
tire.
Maximum loadonone tire
Maximu mloa don one tire. This iscalcu lated
by divi ding themaximu maxle loadof one axle
by two.
PSI (poun dsper square inch)
A standar dunit ofmeasu refor tire pressu re.
Aspe ctratio
Rel ationshi pbetwe entire heig htand tirewidth
in percent.
Tire pressure
This ispressu reinsid ethe tire applying anout-
ward force toeach square inch ofthe tire's
surfa ce.The tirepressu reisspeci fiedin pou
nds persquare inch (psi),in kilop ascal
(kPa) orinbar. Thetirepressu reshou ldonly
be corrected whenthetires arecold.
Col dtire pressure
The tires arecold:
R ifthe vehicl ehas been parked withthetires
out ofdire ctsunli ghtforatlea stthree hours
and
R ifthe vehicl ehas notbeen drivenfurther
than 1mile (1.6km)
Tread The part ofthe tire that comes intocontact
with theroad .
Bead
The tirebeadensure sthat thetire sits
secure lyon the whee l.There aresevera lsteel
wire sin the beadto prevent thetire from com-
ing loos efrom thewhee lrim.
Sidew all
The part ofthe tire betwe enthe tread andthe
bea d.
Weig htofoption alextras
The combined weight ofthose optiona lextras
that weighmore thanthereplaced standard
parts andmore than2.3kg(5lbs) .These
optiona lextras, suchashigh -performa nce
brakes ,level control, aroof rack orahigh -per-
formance battery,are not includ edinthe curb
wei ght and theweight ofthe accesso ries.
TIN (Tire Identification Number)
This isauniq ueidentifier whichcan beused
by atire manufa cturertoide ntify tires, for
exampl efor aprodu ctrecal l,and thus identify
the purcha sers.TheTINismade upofthe
manufa cturer's identity code, tiresize, tire
type code andthemanufa cturing date.
Load bearin gindex
The loadbea ring index (also loa dindex) isa
code thatcontains themaximu mloa dbea ring
capa cityofatire.
Traction Traction isthe resul tof friction betweenthe
tires andtheroad surface. 312
Al
labout wheelsand tiresWhee lsand tires