2023 MERCEDES-BENZ A CLASS wheel

th
elow tirepr essur ete lltale illuminat es,you
should stop and checkyo ur tires assoon as
possible, andin0ateth em tothepr oper pres-
sur e.Driving onasign i/can tlyu nde r-in0 ated
tir ecauses thetir eto overheat andcanlead
to tirefa ilur e.Under -in0at ion also reduces fuel
e1ciency andtiretread life, and maya.ect
th eve hicle ’shandl ingand stoppin gabili ty.
Ple ase note that theTPMS isno ta substitut e
fo rpr oper tiremaint enance, anditis thedr iv-
er ’s responsi bilityto maint aincorrect tire
pr essur e,even ifunder -in0at ion has not
re ac hed theleve lto trigg erillum inatio nof the
TPMS low tirepr ess urete lltale.
Yo ur vehicle hasalso been equipp edwith a
TP MS malf unct ionindicat ortoindicat ewhen
th esy stem isno toper ating proper ly.The
TPMS malfunction indicatoris combined with
th elow tirepr essur ete lltale. When thesy stem
de tects amalfu nction, thete lltale will 0ashfo r
appr oximat elyone minut eand then remain
contin uouslyillumin ated. This sequence will
contin ueupon subseq uentvehicle star t-ups as
lon gas themalfunction exists. When
themalfunction indicatorisilluminat ed,
th esy stem mayno tbe able todetect or sign al
lo w tirepr essur eas intende d.TPMS malfu nc-
tion sma yoccur fora va riet yof reasons,
incl udin gth einst allation ofreplacement or
alt ernat etir es orwheels ontheve hicle that
pr eve nttheTPMS from function ingproper ly. The
system checks thetir epr essur eand thetir e
te mp eratur eof thetir es inst alled ontheve hicle by
means ofatir epr essur esensor .
The tirepr essur eand thetir ete mp eratur eappear
in theon-boar dcom puter(/ page297).
If th er eis asubst antial pressur eloss orifth etir e
te mp eratur eis excessiv e,youwill bewarned with
displa ymessag es(/ page379) orthe0077
wa rning lampin theinst rument cluster
(/ page399).
The tirepr essur emonit oring system isonl yan aid.
It is thedr iver's responsi bilityto setth etir epr es-
sur eto there commen dedcold tirepr essur esuit a-
ble forth eoper ating situation.
In most cases ,th etir epr essur emonit oring sys-
te m will automaticall yupdat eth ene wrefere nce va
lues aTer youha ve chang edthetir epr essur e.
Yo ucan, howev er,also updat eth ere fere nce val-
ues byrestar ting thetir epr essur emonit oring sys-
te m manuall y(/ page298).
Sy st Sy
stem limits em
limits
The system maybe impair edorma yno tfun ction
par ticular lyin thefo llo wing situations:
R Incor rect refere nce values weretaught in
R Sudden pressur eloss caused byafo re ign
object penetrating thetir e, forex am ple
R Ther eis amalf unct ioncaused byano ther
ra dio signal source
Chec Chec
kingt king
the tir he
tirepr e
pr essur essur
ewit e
wit ht h
the tir he
tirepr e
pr essur e essur
e
monit monit
or or
ing syst ing
system em
R R
eq equir uir
ements: ements:
R The vehicle isswitc hedon.
On- boar dcom puter:
4 Service5
Tires
One ofthefo llo wing displa ysappear s:
R Current tirepr ess ureand tirete mp eratur eof
th eindividual wheels: Wheels
andtires
297 297

R
Tire pressure willbedisplay edafter driving a
few minutes
R Tire Pressure MonitorActive: thete ac h-in
pr ocess ofthesy stem isno tyet com plete.The
tir epr ess ures arealr eady being monitored. #
Com pareth etir epr essur ewit hth ere com-
mende dtir epr essur efo rth ecur rent ope rating
condi tion(/page295) .Ad ditionall y,obser ve
th eno teson cold tires (/ page293).
% The values displa yedin theon-boar dcom-
put erma yde viat efrom those ofthetir epr es-
sur ega ug eas they referto sea leve l.At high
ele vations, thetir epr essur eva lues indicat ed
by apr essur ega ug ear ehigher than those sho
wnbytheon-boar dcom puter.In this case,
do notre duce thetir epr essur e.
R R
est est
ar ar
ting t ting
the tir he
tirepr e
pr essur essur
emonit e
monit or or
ing syst ing
system em
R R
eq eq
uir uir
ements: ements:
R The recommen dedtirepr essur eis cor rectl y
se tfo rth ere specti veoper ating status onallof
th ewheels (/page293).
Re star tth etir epr essur emonit oring system inthe
fo llo wing situations:
R The tirepr essur ehas chang ed.
R The wheels ortires have been chang edor
ne wly installed.
On-boar dcom puter:
4 Service 5
Tires #
Swipe down wardson Touc hContr olon the
leT-h andside ofthesteer ing wheel.
The Use Curre ntPressure sas New Refer-
ence Valuesmessag eis sho wnintheInstr u-
ment Displa y. #
Torestar t,pr es sTo uc hContr olon theleT-
han dside ofthesteer ing wheel.
The Tire Press. Monitor Restarted messageis
sho wnintheInstr ument Display.
Cur rent wa rning messa gesar edele tedand
th eye llo w0077 warning lampgoes out.
ATer youha ve been driving fora few minut es,
th esy stem checks whe ther thecur rent tire
pr ess ures arewit hin thespeci/ed rang e. The
cur rent tirepr ess ures areth en accep tedas
re fere nce values andmonit ored.
Be sureto also payatt ent ion tothefo llo wing rela-
te dto pic:
R Noteson tirepr essur e(/ page293) TT
ir ir
e pr e
pr essur essur
eloss w e
loss war ar
nin gsy st nin
gsy stem em
FF
unct ionoft unct
ionofthe tir he
tirepr e
pr essur essur
eloss w e
loss war ar
nin gsy st nin
gsy stem em
The tirepr essur eloss warning system warnsth e
dr iver by means ofdispla ymessag eswhen ther e
is ase vere tirepr ess ureloss . 298298
Whee
lsand tires

Sy
st Sy
stem limits em
limits
The system maybe impa ired orma yno tfunc tion
pa rticular lyin thefo llo wing situations:
R Incor rect refere nce values weretaught in
R Sudden pressur eloss caused byafo re ign
object penetrating thetir e, forex am ple
R Aneven pressur eloss onmor eth an one tire
occur s
The system has are str icte dor dela yedfun ction
par ticular lyin thefo llo wing situations:
R Poor ground condition s,e.g. snowor grav el
R Driving withsno wch ains
R When adoptingave ry spor tydrivi ng style wit h
high corner ing speeds orsudden acceleration
R Driving withahigh load
The tirepr essur eloss warning system isonl yan
aid. Itis thedr iver's responsi bilityto setth etir e
pr essur eto there commen dedcold tirepr essur e
suit able forth eoper ating situation andtocheck
it. Be
sureto also obser vethefo llo wing further rela-
te dsubjects:
R Noteson tirepr essur e(/ page293)
R Displ aymessag esabout thetir es
(/ page379)
R R
est est
ar ar
ting t ting
the tir he
tirepr e
pr essur essur
eloss w e
loss war ar
ning syst ning
system em
R R
eq eq
uir uir
ements: ements:
R The recommen dedtirepr essur eis cor rectl y
se tfo rth ere specti veoper ating status onall
wheels.
Re star tth etir epr essur eloss warning system in
th efo llo wing situations:
R The tirepr essur ehas chang ed.
R The wheels ortires have been chang edor
ne wly installed.
On-boar dcom puter:
4 Service 5
Tires #
Swipe down wardson theTo uc hContr olon the
leT-h andside ofthesteer ing wheel.
The Tire Pressure ControlSystem Active
Restart messageis sho wninthedispla y. #
Tobegin restar t,pr es sth eTo uc hContr olon
th eleT-h andside ofthesteer ing wheel.
The Tire Pressure NowOK?messag eis sho wn
in thedispla y. #
Sele ctYes . #
Tocon/r mrestar t,pr es sth eTo uc hContr olon
th eleT-h andside ofthesteer ing wheel.
The Run FlatIndicator Restarted messageis
sho wninthedispla y.
ATe ryo uha ve driven fora few minut es,the
tir epr ess ureloss warning system monit ors
th ese ttir epr essur esofall thetir es.
Be sureto also payatt ent ion tothefo llo wing rela-
te dto pic:
R Noteson tirepr essur e(/ page293) Wheel
sand tires
299 299

Loading
t Loading
the v he
vehic le ehic
le NNo o
t t
es on T es
on Tir ir
e and Loading Inf e
and Loading Infor or
mation placard mation
placard &
W W
ARNING ARNING
Riskofacc ident from overloa-
ded tires
Ov erloaded tires ma yove rheat and burstas a
conseq uence. Overloaded tires can also
im pair thesteer ing and handling charact eris-
tics and lead tobrak efa ilur e. #
Obser vetheload rating ofthetir es. #
The load rating must beatleast halfth e
per missible axleload oftheve hicle. #
Neverov erload thetir es by exceedin g
th emaximum load. The
Tire and Loadi ngInformatio nplacar dis on the
B-pi llaron thedr iver's side oftheve hicle. 1
Tire and Loadi ngInformatio nplacar d %
The datasho wnintheillust ration isex am ple
dat a.
The Tire and Loadi ngInformatio nplacar dsho ws
th efo llo wing information:
R Maximum numberofseats 2accor dingto
th emaximum numberofpeople permitt edto
tr ave lin theve hicle. 300300
Wheel
sand tires

R
Max imumper mis sibleloa d3 com prise sth e
gr oss weight ofall vehicle occupan ts,load and
lug gage .
R Recommen dedtirepr essur e1 forcold tires.
The recommen dedtirepr essur esareva lid for
th emaximum permissible loadanduptothe
maximum permissible vehicle speed.
Ple ase also note:
R Informati onon per missi bleweights andloads
on theve hicle identi/cation plate
(/ page327) .
R Informatio non tirepr essur ein thetir epr es-
sur eta ble (/ page295).
Fu rther relat ed subjects:
R Determ ining themaximum permissible load
(/ page301)
R Noteson tirepr essur e(/ page293). SS
t t
eps f eps
for De t or
De ter er
min ingCor r min
ingCor rect Load Limit ect
Load Limit The
follo wing steps have been developed as
re qu ired ofallma nuf actur ersunder Title 49, Code
of U.S. Feder alRe gula tions ,Pa rt575, pursuant toth
e"N ational Tra1c andMotorVe hicle SafetyAc t
of 1966". #
(1): (1):
Locat eth estat ement “The combin ed
we ight ofoccupa ntsand cargoshould never
ex ceed XXXkgorXXX lbs.”on your vehicle' s
placar d. #
(2): (2):
Determ ine thecombined weight ofthe
dr iver and passeng ersth at will beriding in
yo ur vehicle. #
(3): (3):
Subtr act thecombined weight ofthe
dr iver and passeng ersfrom XXX kgorXXX lbs. #
(4): (4):
The result ing /gur eeq uals theav ailabl e
amoun tof car goand luggage load capac ity.
Fo rex am ple, ifth e"XXX" amount equals
1,400 lbs.and ther ewill be/ve150 lbpas-
seng ersin your vehicle, theamount ofavaila-
ble cargoand luggage load capac ityis
650 lbs.(1,400 -750 (5x150) =650 lbs.) #
(5): (5):
Determ ine thecombined weight oflug-
ga ge and cargobein gloaded ontheve hicle.
That weight mayno tsaf elyex ceed theav aila-
ble cargoand luggage load capac itycalcula -
te din Step 4. #
(6): (6):
Ifyo ur vehicle willbetowing atrailer ,load
fr om your trailer willbetransf erredto your
ve hicle. Consult this manual todeterm ine how
th is reduces theav ailabl ecar goand luggage
load capac ityofyour vehicle.
% Notall vehicles areper mitt edtotow atrailer .
To wing atrailer isonl yper mitt edifatrailer -
hitc his ins talled. Please consult anaut hor ized
Mer cedes-Benz dealerifyo uha ve anyqu es-
tions about towing atrailer withyo ur vehicle.
Ev en ifyo uha ve calculat edtheto ta lload carefull y,
yo ushould stillmak esur eth at themaximum per-
missible gross weight andthemaximum gross
axle weight rating ofyour vehicle areno tex cee-
ded. Details can befound ontheve hicle identi/-
cation plate. #
Have your loaded vehicle –incl udin gdr iver ,
occupan tsand load –we ighed onave hicle
we ighbr idge.
The measur edvalues mayno tex ceed the
maximum permissible values stat ed on the
ve hicle identi/cation plate. Wheel
sand tires
301 301

Fu
rther relat ed subjects:
R Calculation exam ple forde term ining themaxi-
mum load(/page302)
R Tire and Loadi ngInformatio nplacar d
(/ page300)
R Tire pressur eta ble (/ page295)
R Vehicle identi/cation plate(/ page327) Calcul
ationex Calculation
exam am
ple f ple
for det or
deter er
min ingt min
ingthe maximum he
maximum
load load
The
follo wing table showsexam ples ofhowto cal-
culat eto taland load capac itieswithva rying seat-
ing con/ gurations anddi.er entnumber sand
sizes ofoccupa nts.Thefollo wing exam ples usea
maximum loadof1500 lbs(680 kg).This isf This
isfor or
illu
s illu
str tr
ati on pur ati
on pur pos esonl y. poses
only.Mak esur eyo uar e
using theactual loadlimit foryo ur vehicle stat ed
on your vehicle' sTire and Loadi ngInformatio n
placar d(/ page300) .
The highe rth ewe ight ofall theoccupants, the
smaller themaximum loadforlugg age.
S S
t t
ep 1 ep
1 ExEx
am am
ple 1 ple
1 Ex Ex
am am
ple 2 ple
2
Combined maximumweight ofoccupa ntsand
load (datafrom theTire and Loadi ngInformatio n
placar d) 1500
lbs(680 kg)1 500lbs(680 kg) 302302
Wheels
andtires

SS
t t
ep 2 ep
2 ExEx
am am
ple 1 ple
1 Ex Ex
am am
ple 2 ple
2
Number ofpeople intheve hicle (driver and occu-
pant s) 51
Dist ribution oftheoccupants Front: 2
Re ar:3 Fr
ont: 1
We ight ofoccupa nts Occupant1:150 lbs(68 kg)
Occupa nt2:180 lbs(82 kg)
Occupa nt3:160 lbs(73 kg)
Occupa nt4:140 lbs(63 kg)
Occupa nt5:120 lbs(54 kg) Occupa
nt1:200 lbs(91 kg)
To talwe ight ofall occupa nts 750lbs(340 kg) 200lbs(91 kg) SS
t t
ep 3 ep
3 ExEx
am am
ple 1 ple
1 Ex Ex
am am
ple 2 ple
2
Pe rm issible load(maximum gross vehicle weight
ra ting from theTire and Loadi ngInformatio nplac-
ar dmin usthegr oss weight ofall occupa nts) 1500
lbs(680 kg)00F8750 lbs(340 kg)=750 lbs
(340 kg) 1500
lbs(680 kg)00F8200 lbs(91 kg)=1300 lbs
(589 kg) Wheels
andtires
303 303

TT
ir ir
e labeling e
labeling OvOv
er er
vie vie
wof tir w
of tirelabeling e
labeling 1
Uniform Tire Quality Grading Standar ds
2 DOT(Depar tmentof Transpo rtatio n),(TIN)
Ti re Identi/cation Number
3 Maxi mum tireload (/page306 )
4 Maxi mum tirepr essur e(/ page306 ) 5
Man ufactu rer
6 Tire charact eristics (/page307)
7 Tire size desig nation,load- bearingcapacit y,
speed rating andload index(/ page307)
8 Tire nam e
% The datash ow nin theillust ration isex am ple
dat a. TT
ir ir
e Quali tyGr e
Quali tyGradin g adin
g In
accor dance withth eUS Depar tment ofTrans-
por tation's "Uniform Tire Quality Grading Stand-
ar ds", tiremanu factur ersar ere qu ired tograde
th eir tires on thebasis ofthefo llo wing thre eper -
fo rm ance fact or s: 1
Tread weargrade
2 Tractio ngr ade
3 Temp eratur egr ade
% The datasho wnintheillust ration isex am ple
dat a.
% The classi/cation isno tleg allyst ipul ated for
Canada, butitis ge ner allyst at ed.
T T
r r
ead w ead
wear gr ear
grade ade
The treadw eargrade isacom parativ era ting
bas edon thewe arrate of thetir ewhen tested
und ercontroll edcond itio ns on asp ec i/ed govern-
ment test course .Fo rex am ple, atir egr aded 150
wo uld wearone andone-half (1\1/2\)time sas 304304
Wheel
sand tires