2019 MERCEDES-BENZ CLA COUPE width

0043
Vehicle infront, ifdetected
0044 Specified minimum distancetothe vehicle
in front; adjustabl e
0087 Your vehicle
0085 Active Distance AssistDISTRONIC active
(text onlyappea rswhen thecruise control
lever isactuated)
X Select theAssistance Graphic Assistance
Graphicfunction
using theon-board computer (Ypage 187).
Tips fordriving withActive Distanc e
Assi stDIS TRONIC General
notes
Pay particula rattention inthe follow ingtraffic
situations:
R Cornering, enteringandexiting abend: the
abil ityofAct iveDistance AssistDISTRONIC to
detect vehicles onbends islimited. Yourvehi-
cle may brake unexpectedly orlate.
R Vehicles drivinginastaggered formation:
Act ive Distance AssistDISTRONIC maynot
detect vehicles thatarenot driving inthe mid-
dle oftheir lanes. Thedistance tothe vehicle
in front willbetoo short.
R Other vehicles changing lane:ActiveDistance
Assist DISTRONIC hasnotdetected thevehi-
cle cutting inyet. Thedistance tothis vehicle
will betoo short.
R Narrow vehicles: Active Distance Assist
DISTRONIC hasnotyetdetected thevehicle
in front onthe edge ofthe road because ofits
narrow width.Thedistance tothe vehicle in
front willbetoo short.
R Obstacles andstationary vehicles:ActiveDis-
tance Assist DISTRONIC doesnotbrake for
obstacles orstationary vehicles.If,for exam-
ple, thedetected vehicleturnsacorner and
an obstacle orstationary vehicleisreveale d, Act
ive Distance AssistDISTRONIC willnot
brake forthem.
R Act ive Distance AssistDISTRONIC maymis-
takenly detectvehicles thatarecrossing your
lane. Ifyou activate Active Distance Assist
DISTRONIC underthefollow ingconditions,
the vehicle couldpullawayunintentionally:
- At traffic lightswithcrossing traffic,for
example.
- ifthere isavehicle infront, afteracrossing,
with theHOLD function activated
In such situations, brakeifnecessary. Active
Distance AssistDISTRONIC willthen bedeacti-
vated. HOLD
function
General notes The
HOLD function canassist thedriver inthe
follow ingsituations:
R when pullingawa y,especia llyon steep slopes
R when maneuvering onsteep slopes
R when waiting intraffic
The vehicle iskept stationary withoutthedriver
having todepress thebrake pedal.
The braking effectiscanceled andtheHOLD
function deactivated whenyoudepress the
accelerator pedaltopull away.
Important safetynotes G
WARNING
If the vehicle isonly braked usingtheHOLD
function, thevehicle mayrollawa yin the fol-
lowi ngsituations whenyouleave thevehicle:
R ifthere isamalfunction inthe system orin
the voltage supply
R ifthe HOLD function isdeactivated by
depressi ngthe accelerator pedalorbrake
pedal ,e.g. byavehicle occupant
R ifthe electrical systeminthe engine com-
partment, thebattery orthe fuses aretam-
pered withorthe battery isdisconnected
There isarisk ofan accident.
Alway sdeactivate theHOLD function and
secure thevehicle againstrolling awaybefore
you leave it. 158
Drivin
gsystemsDrivin gand parking

R
ifthe camer alens isdirt yor obst ructed.
Obser vethe noteson clean ing
(Y page 269)
R ifthe rear ofyour vehic leisdamaged. Inthis
case, havethecamer aposit ionand setting
chec kedataqualified specialist workshop.
The field ofvision andotherfunc tionsof the rear
view camer amay berest ricteddue toaddition al
acc essor iesonthe rear ofthe vehic le(e.g.
licen seplate holder ,rear bicyc lerack ).
i The
contrast ofthe display maybeaffec ted
by the sudden presenceof sunligh tor oth er
light sourc es,e.g. when exitingagarage. Pay
part icular attent ion inthis situat ion.
i If
usability issever elyrest ricted, e.g. due to
pixel errors,have thedisplay repairedor
replac ed.
Activa ting/d eactivating therea rview
cam era X
To acti vate:make surethattheSmar tKey is
in posit ion0048inthe ignit ionlock .
X Make surethattheActi vationbyRgear Acti
vationbyRgear
func tionisselec tedinthe multim ediasystem;
see theDigit alOperat or'sManual.
X En gage reversegear.
The area behin dthe vehic leisshown with
guide linesinthe multim ediasystemdisplay.
The image fromthe rear view camer ais avail-
able throughout themane uverin gproc ess.
To deact ivate:the rear view camer adeact i-
vate sif you shift thetransm ission to005D oraft er
drivin gfor wards ashor tdist ance.
The innersegme ntsof the warnin gindic atorare
displayed inred ifthe reisacom plete system
failure. Theindic atorlamp inthe PARK TRONIC
butt onlight sup.
If the syst emfails atthe rear ofthe vehic le:
R the rear segme ntsare shown inred when
back ingup.
R the rear segme ntsare hidden whendriving
for wards. Messa
gesinthemu ltim edia systemdis-
pla y The
rear view camer amay show adist orted view
of obst acles, showtheminc orre ctly or not atall.
The rear view camer adoes notshow objectsin
the followin gposit ions:
R very closeto the rear bumper
R under therear bumper
R in clos erang eabove thehandle onthe trunk
lid
! Obj
ectsnot atgroun dlevel mayappear to
be furt her away thantheyact ually are,e.g.:
R the bumper ofapark edvehic le
R the drawbar ofatrailer
R the ball couplin gof atrailer towhitch
R the rear sectionofan HGV
R aslant edpost
Use theguideline sonly fororien tation.
Appr oach objectsno furt her than thebott om-
most guideline . 0043
Yellow guidelineatadist anceof approx -
imate ly13 ft(4. 0m) fromthe rear ofthe
vehic le
0044 Whit eguide linewitho utste erin ginput –
vehic lewidth including theexterior mirrors
(st atic )
0087 Yellow guidelineforthe vehic lewidth
inc luding theexterior mirrors, atthe curr ent
ste erin gwheel angle(dynamic )
0085 Yellow lanemark ingthe cour sethe tires will
tak eat the curr entsteerin gwheel angle
(dynamic ) 170
Driving
systemsDriving andparking

0083
Yellow guidelineatadistan ceofapprox -
imate ly3ft (1. 0m) from therear ofthe vehi-
cle
0084 Vehic lecen teraxle (mark erassist ance)
006B Bumper
006C Red guide lineatadistan ceofapprox imately
12 in(0.30m) from therear ofthe vehic le 0043
Frontwarnin gdisplay
0044 Addit ional measurem entoperat ionalreadi-
ness indicatorforPark ingAssist
PARKT RONIC
0087 Rear warnin gdisplay
When ParkingAssistPARKT RONIC isopera-
tion al(Y page 164),addition almeasurem ent
operat ionalreadin essindic ator0044appears in
the multim ediasyste mdisplay. Ifthe Park ing
Ass istPARKT RONIC warningdisplays areactive
or light up,warnin gdisplays 0043and 0087are also
act ive orlight upcor respon dinglyinthe multi-
media systemdisplay. "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 curr ent
ste erin gwheel angle(dynamic )
0087 Yellow guidelineatadistan ceofapprox -
imate ly3ft (1. 0m) from therear area
0085 Red guide lineatadistan ceofapprox imately
12 in(0. 30 m)from therear area
X Make surethattherear view camer ais
switc hedon(Ypage 170).
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, carefully
back upunt ilyou reach theend posit ion.
Red guide line0085isthe nat the end ofthe
park ingspace. Thevehic leisalmost parallel
in the park ingspace. Driving
systems
171Driving andparking Z

Reve
rseperpe ndicularparkin gwi th ste er-
in gin put 0043
Parking spacemar king
0044 Yellow guide line for the vehi clewidth
incl uding the exteri ormirr ors, atthe curr ent
stee ring wheelang le(dyna mic)
X Drive past the parking spaceand bring the
vehi cletoastand still.
X Ma kesure that therearvie wcame rais
swi tched on(Ypage 170 ).
The lane and theguide lines areshown.
X Whi lethe vehi cleisat astand still,turn the
stee ring wheelin the directi onofthe parking
spa ceunti lye llow guideline 0044 reaches park-
ing spacemar king 0043.
X Ma inta inthe stee ring inputand reve rsecare -
ful ly. 0043
Yellow guide line for the vehi clewidth
incl uding the exteri ormirr ors, atthe curr ent
stee ring 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
Whitegu ideline atthe curr entstee ringinput
0044 Parking spacemar king
X Tu rn the stee ring wheelto the center position
whi lethe vehi cleisstati onary. 0043
Redgu ideline atadi stance ofap pro xima tely
12 in(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
pa rki ng space . 17
2 Dr
ivi ng system sDrivi ng andparki ng

Chec
kwheel sand tires for damag eat least once
a mon th.Chec kwheel sand tires afterdriv ing
off -road oron roug hroad s.Dam aged wheel s
can caus ealoss oftirepre ssur e.Pay particular
att entio nto damag esuc has:
R Cuts inthetir es
R Pun ctures inthetir es
R Tear sin thetir es
R Bulg eson tires
R De for mat ionorsev ere corrosio non wheel s
Regular lych eck thetir etread dept hand the
co ndi tionof thetread across thewhole widthof
th etir e(Y page 291). 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 the
valv eagain stdirt and mois ture.Do notmoun t
anyt hingon to thevalv eot her than thest and ard
valv ecap orother valvecaps appro vedby
Mer cedes-Ben zfor your vehicle.Do notuse any
ot her valvecaps orsyst ems ,e.g .tir epre ssur e
mon itorin gsyst ems .
Regular lych eck thepre ssur eof all thetir es par-
tic ularly priorto lon gtrips. Adjus tth etir epre s-
sure asneces sary (Ypage 293).
Obse rveth eno teson theeme rgencyspar e
wheel (Ypage 315).
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
In suff icienttiretread willreduce tiretract ion.
The tireis no longer able todiss ipatewate r.
This mean sth at on wet road surfaces ,th eris k
of hydr oplan ingincreas es,inpart icular where
spee dis no tadapt edtosuit thedriv ingcon-
dit ion s.Ther eis aris kof acc iden t.
If th etir epre ssur eis toohigh ortoolow, tires
may exhibit differe ntleve lsof wear atdiff er-
en tloc atio nson thetir etread. Thus,you
sho uld regularly check thetread dept hand
th eco ndi tionof thetread across theen tire
widt hof all tires. Min
imum tiretread dept hfor :
R Sum mer tires: 00CEin(3 mm)
R M+S tires: 00CFin(4 mm)
For safe tyreas ons,rep lace thetir es bef ore
th elegally prescribe dlimit forthemin imum
tir etread dept his reac hed. Mark
ing0043sho wswher ebar indicat or0044 for
tr ead wear isint egr atedint oth etir etread.
Tre adwear indicat ors (TWI )are required bylaw.
Six indicat ors are posi tionedon thetir etread.
They arevisible once atread dept hof appro x-
imat ely00CD in(1. 6mm) hasbeen reached. Ifth is
is thecas e,thetir eis so worn that itmust be
rep lace d. Select
ing,mou nting and replacin g
tir es G
WAR
NING
Ex cee dingth est ate dtir eload- bearingcapa-
cit yand theappr ovedmax imum speedco uld
lead totiredamag eor thetir eburs ting.Ther e
is aris kof acc iden t.
Ther efore, onlyuse tiretype sand sizes
appr ovedfor your vehicle mod el.Obse rveth e
tir eload rating and spee drat ing required for
your vehicle.
R On lymoun ttir es and wheel sof thesame type
and make.
Ex cep tion:itis per mis sible toins tall adiff er-
en ttype ormak ein theeve ntofaflat tire.
Obs erveher eth e"MOE xten ded tires (tires Op
era tion
291Wheels andtires Z

Permissible
GrossVehicle WeightRating
(GVWR): thegross weight ofthe vehicle, allpas-
sengers, loadandtrailer load/noseweight (if
applicab le)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(grossvehicle
weight andmaximum grossaxleweight rating),
have yourloaded vehicle (including driver,occu-
pants, cargo, andfulltrailer loadifapplicab le)
weighed onasuitable vehicleweighbridge. All
about wheelsand tires Uniform
TireQuality GradingStand -
ard s
Overview ofTire Quality GradingStand -
ard s Uniform
TireQuality Grading Standards areU.S.
governmen tspecifications. Theirpurpose isto
provide driverswithuniform reliableinformation
on tire performance data.Tiremanufacturers
have tograde tiresusing threeperformance fac-
tors: 0043tread weargrade, 0044tract iongrade and
0087 temperature grade.Theseregulations donot
apply toCanada. Nevertheless, alltires soldin
North America areprovided withthecorre-
sponding qualitygrading markings onthe side-
wall ofthe 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 stat-
utory safety requirements inaddition tothese
grades.
i The
actual values fortires arevehicle-spe-
cific andmay deviate fromthevalues inthe
illustration.
Tread wear The
treadwear gradeisacomparative rating
based onthe wear rateofthe tire when tested
under controlled condition son aspecified U.S.
governmen tcourse. Forexample, atire graded
150 would wearoneandone-half timesaswell
on the governmen tcourse asatire graded 100.
The relative performance oftires depends upon
the actual condition sof their use,however, and
may depart significantly fromthenorm dueto
variations indriving habits, service practices
and differences inroad characterist icsand cli-
mate.
Tra ction G
WARNING
The tract iongrade assigned tothis tireis
based onstraight- aheadbraking traction
tests, anddoes notinclude acceleration, cor-
nering, hydropla ning,orpeak tractionchar-
acteristic s.
! Avoid
wheelspin. Thiscanlead todamage to
the drive train.
The tract iongrades –from highest tolowest –
are AA, A,Band C.Those grades represent the
tire's abilityto stop onwet pavement asmeas-
ured under controlled condition son specified
governmen ttest surfaces ofasphalt andcon-
crete. Atire marked Cmay have poortraction
performance.
The safe speed onawet, snow covered oricy
road isalwa yslower thanondry road surfaces.
You should payspecial attentiontoroad condi-
tions when temperatures arearound freezing
point.
Mercedes-Ben zrecommen dsaminimum tread
depth of00CF in(4 mm) onallfour winter tires. 304
All
about wheelsand tiresWheels andtires

tire
load rating andspee dra ting required for
yo ur 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 wallma y
not conta inany letters orma yconta inone letter
tha tpre 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 trucktire sacc ording toU.S. manuf actu ring
sta nda 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 r-
ge ncy .
Tire width: tirewidth 0043sho wsthe nomi naltire
wi dth inmi llim ete rs.
As pec tratio :as pe ct ratio 0044 isthe size ratio
be twe enthe tire height and tirewidth and is
sho wninpe rcen t.The aspe ctratio iscal cul ate d
by divid ing the tire width bythe tire height.
Tire code: tire code0087 speci fiesthe tire type.
"R "rep resents radial tire s;"D" represents diag -
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 (240 km/h )ma yha ve "ZR" inthe size de
scri ption, dependi ng on the manuf actu rer
(e .g. 245/4 0ZR 18) .
Rim diamete r:rim diam ete r0085 isthe diam ete r
of the bead seat, not thediam ete rof the rim
fla nge .Th erim diam ete ris sp eci fiedin
inch es(in).
Lo ad-b earingin dex :lo ad -be aring index0083 isa
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 301) .
Exam ple:
Loa d-bearin gind ex91 indicates ama xim um
lo ad of1,3 56lb(61 5kg )tha tthe tirescan bear.
For furthe rinf orm ation onthe maxim um tire
lo ad inkilog rams and lbs, see(Y page 307 ).
For furthe rinf orm ation onthe load bearing
ind ex, see"L oa dind ex" (Ypage 307 ).
Spe edratin g:spee dra ting 0084speci fiesthe
ap pro ved maxim um spee dof the tire.
i Ti
re dataisveh icle-s pecificand mayde via te
fro mthe data inthe exampl e.
Re gardl essof the spee dra ting ,al wa ysobserve
the spee dlimi ts. Drivecar efully and adaptyo ur
dri vin gsty leto the trafficcond itions .
Summe rtire 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 ) ZR
...(. .Y) ove
r186 mph (300 km/h ) ZR ove
r149 mph (240 km/h ) R
Op tional ly,tire swi th ama xim um spee dof
ove r149 mph (240km/h )ma yha ve "ZR" in 30
6 Al
labo utwhee lsan dtire sWhe elsand tires

PSI
(pounds persquar einch)
A standard unitofmeasure fortire pressure.
Aspect ratio
Relationship betweentireheight andtirewidth
in percent .
Tire pressur e
This ispressure insidethetire apply inganout-
ward force toeach square inchofthe tire's sur-
face. Thetirepressure isspecified inpounds per
square inch(psi), inkilopascal (kPa)orinbar.
The tirepressure shouldonlybecorrect edwhen
the tires arecold.
Cold tirepressur e
The tires arecold:
R ifthe vehicle hasbeen parked withthetires
out ofdirect sunlight foratleast three hours
and
R ifthe vehicle hasnotbeen driven further than
1 mile (1.6km)
Tread
The part ofthe tire that comes intocont actwith
the road.
Bead The tirebead ensures thatthetire sits securely
on the wheel. Thereareseveral steelwires inthe
bead toprevent thetire from coming loosefrom
the wheel rim.
Sidewall The part ofthe tire between thetread andthe
bead.
Weight ofoptional extras
The combined weightofthose optional extras
that weigh morethanthereplaced standard
parts andmore than2.3kg(5lbs). These
optional extras,such ashigh-performanc e
brakes, levelcontrol,aroof rack orahigh-per-
formanc ebattery, arenot included inthe curb
weight andtheweight ofthe accessories.
TIN (Tire Identification Number)
This isaunique identifier whichcanbeused by
a tire manufacturer toidentify tires,forexample
for aproduct recall,andthus identify thepur-
chasers. TheTINismade upofthe manufactur-
er's identity code,tiresize, tiretype code and
the manufacturing date. Load
bearing index
The load bearing index(alsoloadindex) isacode
that contains themaximum loadbearing capa-
city ofatire.
Tra ction
Traction isthe result offrict ionbetween thetires
and theroad surface.
Tread wearindicators
Narrow bars(tread wearbars) thataredistrib-
uted overthetire tread. Ifthe tire tread islevel
with thebars, thewear limitof00CD in(1.6 mm)
has been reached.
Occupant distribution
The distribution ofoccupants inavehicle attheir
designated seatingpositions.
Total loadlimit
Nominal loadandluggage loadplus68kg
(15 0lbs )multiplied bythe number ofseats in
the vehicle. Changing
awheel Flat
tire
The "Breakdown assistance"section
(Y page 274)contains information andnotes on
how todeal with aflat tire. Inform ationondriv-
ing with MOExt ended tiresinthe event ofaflat
tire can befound under "MOExt endedtires(tires
with run-flat characterist ics"(Ypage 275). Rotat
ingthe wheels G
WARNING
Int erchanging thefront andrear wheels may
severely impairthedriving characterist icsif
the wheels ortires have different dimensions.
The wheel brakes orsuspension components
may alsobedamaged. Thereisarisk ofacci-
dent.
Rotate frontandrear wheels onlyifthe wheels
and tires areofthe same dimensions.
! On
vehicles equippedwith atire pressure
monitor ,electron iccomponen tsare located
in the wheel. 310
Changing
awheelWheels andtires