Page 377 of 518

Six
mar ks1 showwher eth ebar indicat ors
(ar row )ar eint egr ated intoth etir etread. They
ar evisible onceatread depthofappr oximat ely
00CD in(1.6 mm) hasbeen reac hed. No
teson sno wch ains 000A
WARNIN GRisk ofacci dent dueto inc or‐
re ct mou nting ofsno wch ains
If yo uha ve mount edsno wch ains tothefront
wheels, thesno wch ains maydr ag agains t
th eve hicle body orchassis components. This
couldcaus edamag eto theve hicle or
th etir es. 0007
Nevermount snowch ains onthefront
wheels. 0007
Onlymount snowch ains onthere ar
wheels inpair s. 000E
NO
TEDama getothewheel trim from
mount edsno wch ains If
sn ow chains aremoun tedto steel wheels,
th ewheel trims can bedamag ed. 0007
Remo vethewheel trims ofsteel wheels
bef oremount ingsnowch ains . R
Snow chains areon lype rm issible forcer tain
wheel/t ire com binat ions.Yo ucan obtain
inf ormat ionabout this from anaut hor ized
Mer cedes -Benz Cent er.
R Forsaf etyre ason s,on lyuse snow chains that
ha ve been specif icallyapproved foryo ur
ve hicle byMer cedes-Ben z,or sno wch ains
wit hth esame qualit yst andar d. R
Ifsn ow chains areins talled, themaximum
per missible speedis30 mph(50 km/h).
R Vehicl eswith Activ ePa rking Assis t:Do
no tuse Parking AssistPA RK TRONI Cwhen
sn ow chains have been installed.
R Vehicl eswith AIRBO DY CONT ROLor
MA GIC BODY CONT ROL:Ifsn ow chains are
ins talled, onlydrive at raised vehicle leve l.
0009 Youcan deac tivateES P®
to pull away
( 0013 page15 4). This allo ws thewheels to
spin, achie ving anincr eased driving forc e. Ti
re pres sur e No
teson tirepr essur e 000A
WARNIN GRisk ofacci dent dueto insuf ‐
fi cie ntor excess ive tir epr ess ure
Under inflate dor ove rinf late dtir es pose the
fo llo wing risk s:
R The tires ma ybur st,especiall yas the
load andvehicle speed increase. Wheels
andtires 37
5
Page 378 of 518

R
The tires ma ywe arexc essiv elyand/or
une venly, whic hma ygr ea tly impair tire
traction .
R The drivin gch aract eristic s,as wellas
st eer ing and braking, maybe greatl y
im pair ed. 0007
Com plywithth ere comme ndedtire
pr ess ureand checkth etir epr essur eof
all tires including thespar ewheel regu‐
lar ly:
R atleas tonce amont h
R when theload chang es
R beforeembar kingon alon gerjour ney
R ifoper ating conditions chang e,e.g .of f-
ro ad drivin g 0007
Adjus tth etir epr essur eas neces sary. Dr
iving with tirepr es su re that istoohigh ortoo
lo w can :
R Sho rten theser vice life of thetir es.
R Cause increased tiredamag e. R
Adverselyaf fect drivi ng charact eristic sand
th us drivin gsaf ety, e.g. due tohydroplaning. 000A
WARNIN GRisk ofan acci dent dueto
insuf ficie nttirepr ess ure
Ti re swit hpr essur eth at istoolow can over‐
heat andburstas are sult.
In addition, they also sufferfr om excessiv e
and/or irre gular wear,whic hcan significan tly
im pair thebr aking proper tiesand thehan‐
dling charact eristic s. 0007
Avoid excessiv elylow tirepr essur esin
all thetir es, including thespar ewheel. Ti
re pressur ewhic his toolow can cause:
R Tire def ectsas are sult ofove rheating
R Impair edhandling charact eristic s
R Irre gular wear
R Incr eased fuelconsum ption 000A
WARNIN GRisk ofacci dent from exces‐
siv etir epr essur e
Ti re swit hex cess ively highpr ess urecan
bu rstbe cau sethey aredamag edmor eeasil y
by highw ayfill, po tholes etc.
In addition, they also sufferfr om irre gular
we ar,whic hcan significan tly im pair thebr ak‐
ing proper tiesand thehandling charact eris‐
tic s. 0007
Avoid excessiv elyhigh tirepr essur esin
all thetir es, including thespar ewheel. Ex
cessiv elyhigh tirepr essur ecan result in:
R Incr eased braking distance
R Impaired handl ing charact eristic s
R Irre gular wear
R Impair eddrivin gcom fort
R Sus ceptibility to damag e 37
6
Wheels andtires
Page 379 of 518

000A
WARNIN GRisk ofacci dent caused by
re peat eddrop intirepr essur e
If th etir epr essur edr ops repeat edly,the
wheel, valve or tirema ybe damag ed.
Insuf ficie nttirepr ess urecan causethetir es
to bur st. 0007
Inspect thetir efo rsigns offore ign
obje cts. 0007
Chec kwhe ther thewheel orvalve has a
leak . 0007
Ifyo uar eunab leto rectify thedamag e,
con tact aqu alif ied spec ialistwo rkshop. Yo
ucan find informa tionon tirepr ess urefo rth e
ve hicle's fact or y-ins talled tires on thefo llo wing
labels:
R Tire and Loadi ngInfo rm atio nplacar don the
B‑pil larof your vehicle (0013 page382).
R Tire pressur eta ble ontheinside ofthefuel
fi ller flap (0013 page37 7).
Ob serveth emaximum tirepr essur e
(0013 page389). Use
asuit able tirepr essur ega ug eto checkth e
tir epr es su re.The outerapp earance ofatir e
does notper mit anyre liable conclusion about
th etir epr essur e.
Ve hicl eswith atir epr ess uremonit oring sys‐
te m: Youcan also checkth etir epr essur eusing
th eon- boar dcom puter.
Onl ycor rect tirepr ess urewhe nth etir es are
cold. Condition sfo rcold tires:
R The vehicle hasbeen parkedwit hth etir es
out ofdir ect sunlight forat lea stthre ehour s.
R The vehicle hastrave led less than 1mile
(1 .6 km ).
A rise inthetir ete mp eratur eof 18 °F(10 °C)
incr eases thetir epr essur eby appr ox.10 kPa
(0. 1ba r/1 .5psi ).Ta ke this int oacc ount when
ch ecking thetir epr essur eof wa rm tires .
The tirepres su re recomme ndedforincr ease d
loa d/spee din thetir epr essur eta ble can affect
th eride comf ort. 000A
WARNIN GRisk ofacci dent from unsu ita‐
bl e acce ssories on thetir eva lves
If yo umoun tuns uitable accessories onto tire
va lves, thetir eva lves ma ybe ove rloaded and
malfunct ion,whic hcan cause tirepr essur e
loss. Tire pressur emonit oring systems for
re trof itti ng willcau sethetir eva lve to remain
open. Thiscanalsore sult intirepr essur e
loss. 0007
Onlyscr ew standar dva lve caps orvalve
cap sspe cifica llyapprove dby
Mer cedes-Ben zfo ryo ur vehicle onto
th etir eva lve. Ti
re pres sur etab le The
tirepr ess ureta ble ison theinside ofthe
fuel filler flap.
0009 The datasho wnintheimag esisexam ple
dat a. Whee
lsand tires 37
7
Page 380 of 518

The
tirepr essur eta ble showsthere comme nded
tir epr ess urefo rall tires app rove dfo rth is vehi‐
cle. The recomme ndedtirepr ess ures apply for
cold tires und ervarious oper ating condit ions,i.e.
loading and/orspeedoftheve hicle.
If one ormor etir esizes precede atir epr essur e,
th etir epr essur einf ormation follo wing isonl y
va lid forth ose tiresizes.
The load condit ions"partially laden" and"fully
laden" aredef ined intheta ble fordif fere nt num ‐
be rs of passeng ersand amounts oflugg age. The
actual number ofseats maydif ferfr om this. Som
etir epr essur eta bles onlysho wtherim
diame terins tead ofthecom pletetiresize, e.g.
R1 8.The rim dia me teris par tof thetir esize and
can befound onthetir eside wall
(0013 page389).
Be sureto also obse rveth efo llo wing further
re lat ed subje cts:
R Noteson tirepr essur e(0013 page37 5) R
Tire and Loadi ngInfo rm atio nplacar d
(0013 page38 2)
R Max imum tirepr essur e(0013 page38 9) Chec
kingtirepr essu resmanu ally 0007
Read thetir epr essur efo rth ecur rent operat‐
ing cond itions from theTire and Loadi ng
In fo rm atio nplacar dor thetir epr essur e
ta ble. Obser vetheno teson tirepr essur e. 0007
Remo vetheva lve cap ofthetir eto be
ch ecked. 0007
Press thetir epr essur ega ug esec urelyon to
th eva lve. 0007
Read thetir epr essur e. 0007
Ifth etir epr essur eis lowe rth an there com‐
mend edvalue, increase thetir epr essur eto
th ere comme ndedvalue. 0007
Ifth etir epr essur eis higher than there com‐
mend edvalue, release air.To do so, press
do wn theme talpin intheva lve, e.g. using
th etip ofapen forex am ple. Then checkth e
tir epr es su re again usin gth etir epr essur e
ga ug e. 37
8
Wheels andtires
Page 381 of 518

0007
Screw theva lve cap ontoth eva lve.
Fu rther relat ed subje cts:
R Noteson tirepr essur e(0013 page37 5)
R Tire pressur eta ble (0013 page37 7)
R Tire and Loadi ngInfo rm atio nplacar d
(0013 page38 2) Ti
re pres sur emoni toring system Fu
nction ofthetir epr essur emoni toring sys‐
te m 000A
DANG ER Risk ofacc iden tdue toinc or‐
re ct tirepr ess ure
Ev erytir e, incl uding thespar e(if prov ided),
should becheckedwhen coldatleas tonc ea
mont hand inflated tothepr essur ere com‐
mend edbytheve hicle manuf acturer(see
Ti re and Loadi ngInfo rm atio nplacar don the
B-pil laron thedr iver ’s side orthetir epr es‐
sur elabel ontheinside ofthefuel filler flap
of your vehicle). Ifyo ur vehicle hastires ofa
dif fere nt size than thesize indicat edon the Ti
re and Loadi ngInfo rm atio nplacar dor the
tir epr es su re table, youne ed todeterm ine
th epr oper tirepr essur efo rth ose tires.
As anadded safetyfe atur e,your vehicle has
been equipped withatir epr essur emonit or‐
ing system (TPMS) that illumin ates alow tire
pr essur eind icat orlam pwhen oneor mor eof
yo ur tires aresign ifican tly und erinf lated.
Ac cor ding ly,if th elow tirepr essur eindicat or
lam plights up,yousho uld stop and check
yo ur tires assoo nas poss ible, andinflate
th em tothepr oper pressur e.Driving ona
signif icantlyund erinf lated tirecaus esthetir e
to overheat andcanlead totirefa ilur e.
Un der inflation alsoincreases fuelconsum p‐
tion andreduces tiretread life, and may
af fect theve hicle's handling andbraking abil‐
ity .Please note that theTPMS isno ta subs ti‐
tut efo rpr oper tiremaint enance, anditis the
dr iver's responsibili tyto maint aincorrect tire
pr ess ure, eve nif und erinf latio nha sno t
re ac hed theleve lto trig ge rill umina tionof
th eTPMS low tirepr essur eindicat orlam p. Yo
ur vehicle hasalso been equipped witha
TPMS malfunction indicatortoindic atewhen
th esy stem isno toper ating proper ly.The
TPM Smal functi onindicatoris combined with
th elow tirepr essur eindicat orlam p.When
th esy stem detects amal functi on,theindica‐
to rlam pwil lfl ash forapp roxima tely amin ute
and then remain continuously illumina ted.
This sequence willcontinue upon subseq uent
ve hicle star t-ups aslon gas themalfunct ion
ex ists.
When themalfunct ionindicat orisillumina‐
te d, thesy stem mayno tbe able todetect or
sig nal low tirepr ess ureas intende d.TPM S
mal functi onsmayoccu rfo ra va riet yof rea‐
son s,inc ludin gth eins tallation ofinc om pati‐
ble replacemen tor alternat etir es orwheels
on theve hicle that preve nttheTPMS from
func tioningproper ly.
Alw aysch eckth eTPMS malfunct ionwarning
lam paf te rre placing oneormor etir es or
wheels onyour vehicle toensur eth at the
re placemen tor alternat etir es and wheels Wheels
andtires 37
9
Page 382 of 518

allo
wtheTPMS tocontinu eto function prop‐
er ly. The
system checks thetir epr essur eand thetir e
te mp eratur eof thetir es installed ontheve hicle
by means ofatir epr essu resensor .
Ne wtirepr essur esensor s,e.g. inwint ertires,
ar eaut omaticall yta ught -indur ing thefirs tjou r‐
ne yth ey areused.
If th er eis asubs tantia lpr ess ureloss orifth e
tir ete mp eratur eis exc essiv e,youwill bewarned
in thefo llo wing ways:
R viadisp lay messa ges(0013 page450)
R viathe0077 warning lam pin theins trument
clus ter(0013 page47 3)
Th etir epr es su re monit oring system isonl yan
aid. Itis thedr iver's responsibili tyto setth etir e
pr essur eto there comme ndedcoldtirepr ess ure
su itab leforth eoper ating situation .Se tth etir e
pr essur efo rcold tires using atir epr essu re
ga ug e. No tethat thecor rect tirepr ess urefo rth e
cur rent operati ng situa tionmu stfirs tbe taught -
in to thetir epr essur emonit oring system. In
mos tcases, thetir epr essur emonit oring sys‐
te m wil lau tomatical lyupd ateth ene wrefere nce
va lues afte ryo uha ve chang edthetir epr essur e.
Yo ucan ,ho we ver,also updat eth ere fere nce val‐
ues byrestar tin gth etir epr essur emonit oring
sy stem manuall y(0013 page38 1).
Sy stem limita tions
The system maybe impair edorma yno tfunc tion
in thefo llo wing situat ions:
R Ifth etir epr essur eis setincor rectly
R Ifth er eis asudden pressur eloss caused, for
ex am ple, byafo re ign obje ctpene tratin gth e
tir e
R Ifth er eis amalfunct ioncaused byano ther
ra dio signal source
Mak esur eto obser vethefo llo wing further rela‐
te dsubjec t:
R Noteson tirepr essur e(0013 page37 5)
Ch ecking thetir epr essur ewit hth etir epr es‐
sur emoni toring system
Re quirement s:
R The ignit ionisswitc hedon. On-
boar dcom puter:
0018 Service 0019
Tires
One ofthefo llo wing displa ysappear s:
R Cur rent tirepr ess ureof each wheel:
R Tire pres sure willbedisplayed afterdriv inga
few minutes
R Tire Pres sure MonitorAc tive: thete ac h-in
pr oce ssofthesy stem isno tye tcomple te.
The tirepr essur ear ealr eady being moni‐
to re d. 0007
Com pareth etir epr essur ewit hth ere com‐
mend edtirepr ess urefo rth ecur rent operat‐
ing cond ition (0013 page 377).Obs erve the
no teson tirete mp eratur e(0013 page37 5).
0009 Theva lues displa yedin themultifunc tiondis‐
pla yma yde viat efrom those ofthetir epr es‐
sur ega ug eas they referto sea leve l.At high
altitudes, thetir epr essur eva lue indic ated by
a pr essur ega ug ear ehigh erthan those
sho wnbytheon- boar dcom puter.In this
case, donotre duce thetir epr essur e. 380
Wheels andtires
Page 383 of 518

Mak
esur eto obser vethefo llo wing further rela‐
te dsubjec t:
R Noteson tirepr essur e(0013 page37 5)
Re star ting thetir epr essur emoni toring sys‐
te m
Re quirement s:
R The recomme ndedtirepr ess ureis cor rectl y
se tfo rth ere spectiv eoper ating condition on
eac hof thefo ur wheel s(0013 page37 5).
Re star tth etir epr essur emonit oring system in
th efo llo wing situat ions:
R The tirepr essur ehas chang ed.
R The wheels ortires have been chang edor
ne wlyins talled.
On- boar dcom puter:
0018 Service 0019
Tires 0007
Swipe down wardson Touc hCon trol on the
lef t-hand sideofthesteer ing wheel.
The Use Current Pressures asNew Refer-
ence Values? messageis sho wninthemulti‐
func tion displa y. 0007
Press 0076 toconf irm there star t.
The Run FlatIndicat orRest arted mes sageis
sho wninthemultifunc tiondispla y.
Cur rent wa rning mess ages aredele tedand
th e0077 yello wwa rning lam pgoes out.
Af teryo uha ve driven fora fe w min utes, the
sy stem checks whe ther thecur rent tirepr es‐
su resar ewit hin thespecif iedrang e. The cur‐
re nt tirepr ess ures areth en accep tedas ref‐
er ence values andmon itor ed.
Mak esur eto obser vethefo llo wing further rela‐
te dsubjec t:
R Noteson tirepr essur e(0013 page37 5) Ra
dio equipme ntappr oval of thetir epr es‐
sur emoni toring system
Ra dio equipme ntappr oval number s Co
untr yR adiotype approval number
Ca nada IC:2546A -GG4T
IC: 2546A -DG6W2D4
IC: 2546A -MC34MA4
Le présent appareil estconf orme
au xCNR d'Indu strie Canada
applicables auxappar eilsradio
exe mptsde licence .L'e xploita ‐
tio nes tau torisée aux deux con‐
ditions suivantes:
(1) l'appa reilne doit pasproduir e
de brouillag e,et
(2) l'utilisat eurdel'appar eildoit
accep terto ut brouillag era dioé‐
lectr ique subi, même sile
br ouillag ees tsuscep tibled'en
com prome ttre lefonctio nneme nt. Whe
elsand tires 38
1
Page 384 of 518

Count
ryRadio type approval number
US AF CCID:MRXGG4 T
FCC ID:MRXD G6W2D4
FCC ID:MRXM C34MA4
This devic eco mp lies withPa rt15
of theFCC Rules. Opera tionis
subje ctto thefo llo wing twocon ‐
dition s:
(1) This device mayno tcause
har mful interfere nce, and
(2) Thisde vice mustacc eptan y
int erfere nce recei ved, includin g
int erfere nce that ma ycaus e
unde sired oper ation. Load
ingtheve hicl e No
teson Tire and Loading Information plac‐
ar d 000A
WARNIN GRisk ofacci dent from overloa‐
ded tires
Ov erloaded tires ma yove rheat and burstas a
con sequenc e.Ov erloaded tires can also
im pair thesteer ing and handling charact eris‐
tic sand lead tobrak efa ilur e. 0007
Obser vetheload-bear ingcapacity of
th etir es. 0007
The load-bear ingcapacity mustbe at
leas thalf thegr oss axle weight rating of
th eve hicle. 0007
Neverove rload thetir es by exc eeding
th emaximum load. The
Tire and Loadi ngInfo rm atio nplacar dis on
th eB-pillar onthedr iver's side oftheve hicle. 1
Tire and Loadi ngInfo rm atio nplacar d 382
Wheelsand tires