2021 MERCEDES-BENZ CLA tires

Plas
tichub cap #
Toremo ve:tur nth ecent ercoverof thehub
cap count er-cloc kwise andremo vethehub
cap. #
Toins tall: makesur eth at thecent ercover
of thehub capistur ned count er-cloc kwise. #
Position thehub capand turnth ecent er
co vercloc kwise untilthehub capengages
ph ysicall yand audibly .
Alum inum hubcap #
Toremo ve:po sitio nsoc ket2 from thetir e-
ch ang eto ol kit onhub cap1. #
Position wheel wrenc h3 onsoc ket2. #
Usingwheelwr enc h3, turnhu bcap 1
cou nter-clo ckwise andremo veit. #
Toins tall: follo wtheins truction sabo vein
re ve rseor der .
% Specif iedtight ening torq ue: 18lb-f t
(25 Nm). Ra
ising theve hicl ewhe nch angi ngawhe el Re
quirement s:
R Ther ear eno per sons intheve hicle.
R The vehicle hasbeen prepar edfora whee l
ch ang e(/ page31 3).
Im po rtant noteson using thejac k:
R Use onlya ve hicle-specif icjac kth at has
been approvedby Mer cedes-Ben zto raise
th eve hicle.
R The jackis onl ydesigned forra ising and
holdin gth eve hicle fora shor ttime whilea
whee lis being chang edand notfo rmaint e‐
nance workund ertheve hicle. R
The jackmus tbe placed onafirm ,fl at and
no n-slip surface. Ifneces sary,use alar ge,
fl at, load- bearing,no n-slip unde rlay .
R The foot ofthejac kmus tbe position edverti‐
call yunder thejac ksuppor tpoint . Ru
les ofcon duct when theve hicle israised:
R Neverpla ceyour han dsorfeet und erthe
ve hicle.
R Neverlie under theve hicle.
R Donotst ar tth eengine anddonotre lease
th eelectr icpar king brak e.
R Donotopen orclose anydoor sor thetrunk
lid. 31
4
Wheels andtires

#
Using thelug wrenc h,loosen thewheel bolts
on thewheel youwish tochang eby about
on efull turn.Do notuns crew thebolts com‐
ple tely. Po
sition ofjac ksuppor tpoints
* NO
TEMer cedes-AMG vehicles #
Obser vetheno tesin theSupplement .
Yo uco uld other wise failto recogni ze
da ngers. &
WARNIN GRisk ofinju ryfrom incor rect
pos itioning ofthejac k
If yo udo notposi tionth ejac kcor rectl yat
th eappr opriatejac king point oftheve hicle,
th ejac kcould tipwithth eve hicle raised. #
Onlyposit ionthejac kat theappr opri‐
at ejac king point oftheve hicle. The
base ofthejac kmus tbe position ed
ve rticall yunder thejac king point ofthe
ve hicle. *
NO
TEVehicle damag efrom thejac k If
yo udo notposi tionth ejac kcor rectl yat
th eappr opriatejac ksuppor tpoint ofthe
ve hicle, thejac kcould tipove rwit hth eve hi‐
cle raised. #
The jackis design edexclu sively for
jac king uptheve hicle atthejac ksup‐
por tpoints . #
Take thera tche tou tof thetir e-c hang eto ol
kit and place iton thehe xagon nutofthe
jac kso that theletter s"A UF" arevisible. Wheels
andtires 31
5

#
Position suppor t2 ofjac k4 onjacksup‐
por tpoint 1.
% Ifth er eis atot alloss ofpressur ein atir e, it
ma ybe poss iblethat thejac kcann otbe
position edatjac ksuppor tpoint 1.Inthis
case, unload theve hicle. #
Turn ratche t3 clockwise untilsuppor t2
sit scom pletely on jacksuppor tpoint 1and th
ebase ofthejac klies evenlyon the
gr ou nd . #
Turn ratche t3 unti lth etir eis raised amaxi‐
mum of1.2 in (3 cm) from thegr ound. #
Loosen andremo vethewheel (/page31 6). Re
mo ving awh eel Re
quirement s:
R The vehicle israised (/page31 4).
* NO
TEMer cedes-AMG vehicles #
Obser vetheno tesin theSupplement .
Yo uco uld other wise failto recogni ze
da ngers. Whe
nch ang ingawheel, avoidapplyin gan yfo rc e
to thebr ak ediscs, asthis could impair theleve l
of comf ortwhen braking. *
NO
TEDama getothre adin gfrom dirton
wheel bolts #
Donotplace wheel boltsin san dor on
a dir tysur face. #
Unscr ew theupper mostwheel boltcom‐
ple tely. #
Screw align mentbolt 1intoth eth re ad
ins tead ofthewheel bolt. #
Unscr ew there maini ngwhee lbolts com‐
ple tely. #
Remo vethewheel. 31
6
Wheels andtires

Lo
we ring theve hicl eaf te ra wh eelch ang e Re
quirement s:
R The newwheel hasbeen installed
(/ page31 7). #
Tolowe rthe vehicl e:pla cethera tche tont o
th ehe xagon nutofthejac kso that thelet‐
te rs "AB "ar evis ible and turnco unt er-cloc k‐
wise. #
Tight enthewheel boltsevenlyin adi ag ona l
pa tter nin theor der indicat ed1 to5 with
an init ialmax imum forc eof 59 lb-ft(80 Nm). #
Tight enthewheel boltsevenlyin adi ag ona l
pa tter nin theor der indicat ed1 to5 to th
especif iedtight ening torq ue of96 lb-ft
(1 30 Nm) . &
WARNIN GRisk ofacci dent dueto inc or‐
re ct tigh tening torq ue
Th ewh eelscou ldcome looseifth ewheel
bolts orwheel nutsareno ttight ened tothe
pr escr ibed torq ue. #
Ensu rethat thewheel boltsorwheel
nuts aretight ened tothepr escr ibed
tight ening torq ue. #
Ifyo uar eno tsur e,do notmo vethe
ve hicle. Contactaqu alif ied spec ialist
wo rkshop andhave thetight ening tor‐
qu ech eckedimmediat ely. #
Chec kth etir epr essur eof thene wlyins talled
wheel andadjus tit ifnec essar y. #
Vehicl eswith tirepr ess urelos swa rning
sy stem: Restar tth etir epr essur eloss warn‐
ing system (/ page296).
Ex cep tion: thene wwheel isan emer gency
spa rewheel. #
Vehicl eswith atir epr ess uremonit oring
sy stem: Restar tth etir epr essur emonit oring
sy stem (/ page295).
Ex cep tion: thene wwheel isan emer gency
spa rewheel. Emer
gency spar ewheel No
teson theemer gency spar ewheel &
WARNIN GRisk ofacci dent caused by
inc orrect whe eland tiredimensi ons
The wheelor tiresize andthetir etype ofthe
emer gency sparewheel orspar ewheel and
th ewheel tobe replaced maydif fer. The
emer gency sparewheel orspar ewheel can
sign ifican tly im pair drivin gch aract eristic sof
th eve hicle.
To preve nthazardous situa tions: #
Adaptyo ur drivin gst yle accor dinglyand
dr ive car efull y. 31
8
Wheels andtires

#
Neverins tallmor eth an oneemer gency
spa rewheel orspar ewheel that dif fers
in size . #
Onlyuse anemer gency sparewheel or
spar ewheel ofadif fere nt size briefly. #
Donotsw itchof fESP ®
. #
Have theemer gency sparewheel or
spar ewheel ofadif fere nt size replaced
at thenear estqu alif ied spec ialistwo rk‐
shop. Thenewwheel mustha ve the
cor rect dimensi ons. %
The eme rgency sparewheel issec ured inthe
emer gency sparewheel baginthetrunk .
Obser vethefo llo wing noteson installing an
emer gency sparewheel:
R Chec kth etir epr essur eof theemer gency
spa rewheel installed. Correct thepr essur e
as neces sary.
R The maximum permissible speedwithan
emer gency sparewheel installed is50 mph
(80 km/ h). R
Donoteq uip theemer gency sparewheel
wit hsn ow chains .
R Replace theemer gency sparewheel afte rsix
ye arsat thelat est,re ga rdless ofwe ar.
% Ve
hicl eswith atir epr ess urelos swa rn‐
ing system: Ifan emer gency sparewheel is
ins talled thetir epr essur eloss warning sys‐
te m canno tfunction reliabl y.Onl yre star tth e
sy stem again when theemer gency spare
wheel hasbeen replaced withane wwheel.
Ve hicl eswith atir epr ess uremonit oring
sy stem: Ifan emer gency sparewheel is
ins talled thetir epr essur emonit oring system
cann otfunction reliabl y.Fo ra fe w min utes
af te ran emer gency sparewheel isins talled,
th esy stem mayst ill displa yth etir epr essur e
of there mo vedwheel. Onlyre star tth esy s‐
te m again when theemer gency sparewheel
has been replaced withane wwheel.
Be sureto also obse rveth efo llo wing further
re lat ed subje cts:
R Noteson tirepr essur e(/ page290)
R Tire and Loadi ngInfo rm atio nplacar d
(/ page29 7) R
Tire pressur eta ble (/ page292 )
R Noteson installing tires (/ page309 ) Inf
lating theemer gency spar ewheel *
NO
TEOverhea ting dueto thetir einf la‐
tion compressor running toolong #
Donotru nth etir einf lation compressor
fo rlong erthan tenminu teswit hout
int erru ption. Re
quirement s:
Com plywit hth emanuf acturer'ssafetyno teson
th est icke rof theemer gency sparewheel andon
th etir einf lation compressor . #
Remo vethest icke rwit hth elabel 50mph
(80 km/ h)from thetir einf lation compressor
housing andaffix it to theins trument cluster
wit hin thedr iver's field ofvision. #
Remo vethetir einf lation compressor from
th estor ag ewe llunder thetrunk floor
(/ page27 2). Whee
lsand tires 31
9

#
Pull filler hose 1and plug 3out ofthetir e
inf lation compressor housing. #
Inser tplug 7offiller hose 1inthesoc ket
on thetir einf lation compressor andthen
tur nit until plug7eng ages. #
Unscr ew thecap from theva lve on theemer‐
ge ncy sparewheel. #
Screw union nut2offiller hose 1onto
va lve. #
Mak esur eon and offswitc h4 ofthetir e
inf lation compressor issetto 0. #
Inser tplu g3 inasoc ketin your vehicle.
R 12Vsoc ket(/ page 106) R
Observeth eno teson soc kets (/ page 106). #
Pres sth est ar t/ stop butt ononce toswitc h
on thepo we rsupp ly(/ page12 7). #
Press onand offswi tch4 onthetir einf la‐
tion compressor toI.
The tireinf lation compressor isswitc hedon.
The tireis inf lated. The tirepr essur eis
sho wnonmanome ter5. #
Pum pth etir eto thespecif iedtirepr essur e.
% The specif iedtirepr essur eis stat ed on the
label oftheemer gency sparewheel. #
When thespecif iedtirepr essur ehas been
re ac hed, press onand offswit ch4 onthe
tir einf latio ncom pres sor to0.
The tireinf lation compressor isswitc hedoff. #
Press thest ar t/ stop butt ontoswitc hof fth e
po we rsupp ly. #
Ifth etir epr essur eis higher than thespeci‐
fi ed pressur e,press pressur ere lease valve
bu tton 6 unti lth ecor rect tirepr ess ureha s
bee nre ac hed. #
Unscr ew unio nnut 2offiller hose 1from
th eva lve. #
Screw theva lve cap oftheemer gency spare
wheel ontoth eva lve ag ain. #
Storefiller hose 1and plug 3inthelowe r
section ofthetir einf lation compressor hous‐
ing. #
Storeth etir einf lation compressor inthe
ve hicle. 320
Wheels andtires

Disp
laymes sages
Possible causes/conseq uencesand0050 0050
Solutions
0077 Check Tires *T
hetirepr essur ein one ormor etir es has dropped significantl y.The wheel position willbedispla yed. &
WARNIN GRisk ofan acci dent dueto insuf ficie nttirepr ess ure
R The tires can burst.
R The tires can wearexc essiv elyand/or unevenly.
R The driving charact eristic sas wellas thesteer ing and braking maybe greatl yim pair ed.
Yo uco uld then lose control of theve hicle. #
Obser vethere comme ndedtirepr ess ures. #
Adjus tth etir epr essur eif neces sary. #
Stop theve hicle inaccor dance withth etra ffic con dition s. #
Chec kth etir epr essur e(/ page290) andthetir es.
0077 Please Correct TirePres-
sure *T
hetirepr essur eis toolow in at leas tone ofthetir es, orthedif fere nce intirepr ess urebe twee nth eindividual
wheels istoogr eat. #
Chec kth etir epr essur eand add air,if neces sary. #
When thetir epr essur eis cor rect, restar tth etir epr essur emonit or(/ page295). Displa
ymessag esand warning/ indic ator lam ps 37
5

Disp
laymes sages
Possible causes/conseq uencesand0050 0050
Solutions
0077 Warning TireMalfunct ion *T
hetirepr essur ein one ormor etir es has dropped suddenly .The wheel position willbedispla yed. &
WARNIN GRisk ofan acci dent from drivi ng with aflat tire
R The tires can overheat and bedamag ed.
R The driving charact eristic sas wellas thesteer ing and braking charact eristic sma ybe great lyim pair ed.
Yo uco uld then lose control of theve hicle. #
Donotdr ive wit haflat tire. #
Donotexc eed themaximum permissible driving distance ineme rgency modeand themaximum permissi‐
ble speed withaflat MOE xtend edtire. #
Obse rveth eno teson flat tires. No
tesin theeve ntofaflat tire(/ page27 0). #
Stop theve hicle inaccor dance withth etra ffic con dition s. #
Chec kth etir es.
Tires Overheat ed *A
tle as tone tireisov erheating. Theaffect ed tires aredispl ayed inred. At temp eratur esclose tothelimit value, the
tir es aredisp laye din yello w. &
WARNIN GRisk ofan acci dent from drivi ng with ove rheat edtires
Ov erheat edtires can burst. 37
6
Display messa gesand warning/ indic ator lam ps