2020 MERCEDES-BENZ S-CLASS Owner's Manual

Six
mar ks1 showw herethe bar indicat ors
(ar row )are integr ated intot he tiret read. They
ar ev isible onceat read dep thofappr oximat ely
00CD in(1.6 mm) hasbeen reac hed. No
teso ns nowc hains &
WARNIN GRisk ofacci dent duet oincor‐
re ct mou nting ofsno wchains
If yo uh ave mount edsno wchains tothef ront
wheels, thes nowc hains maydraga gains t
th ev ehicle bodyorchassis components. This
couldcaus edamag etot he vehicle or
th et ires. #
Neverm ount snowchains onthef ront
wheels. #
Onlym ount snowchains onther ear
wheel sinp airs. *
NO
TEDama getothew heel trim from
mount edsno wchains If
sno wchains arem oun tedt os teel wheels,
th ew heel trims can bedamag ed. #
Remo vethew heel trims ofsteel wheels
bef orem ount ingsnowchains. Obser
vethef ollo wing when usingthes now
ch ains :
R Snow chains areo nly perm issible forc ertain
wheel/t irec om binat ions.You can obtain
inf ormation aboutthis from anaut hor ized
Mer cedes-Benz Center.
R Fors afet yr easons, onlyusesnow chains that
ha ve been specif icallyapproved fory our ve
hicle byMer cedes-Ben z,or sno wchains
wit hthe same qualit ystandar d.
R Ifsn ow chains arei nstalled, them aximum
per missible speedis30 mph(50 km/h).
R Vehicl eswith Activ eP arking Assist: Do
no tu se Parking AssistP ARK TRON ICwh en
sno wchainshave been installed.
R Vehicl eswith AIRB ODYC ONT ROLo r
MA GIC BODY CONT ROL:Ifsn ow chains are
ins talled, onlydrivea traised vehicle leve l.
% Youc an deac tivateE SP®
to pull away
( / pag e204). This allowsthew heels to
spin, achie ving anincr eased driving forc e. Wheels
andtires 44
7

Ti
re pres sur e No
teso ntirep ressur e &
WARNIN GRisk ofacci dent duet oinsuf ‐
fi cie ntor excess ivet irep ress ure
Under inflate do roverinf late dt ires pose the
fo llo wing risk s:
R The tires ma yburst,e speciall yasthe
load andvehicle speed increase.
R The tires ma yw ear excessiv elya nd/or
une venly, whic hmaygrea tly impair tire
traction .
R The drivin gchar acteristics, aswellas
st eer ing and braking, maybeg reatl y
im pair ed. #
Com plywiththe recomme ndedtire
pr ess urea nd checkt he tirep ressur eof
all tires including thes par ew heel regu‐
lar ly:
R atleas tonce amonth
R when thel oad chang es R
beforee mbar kingo nal ongerjour ney
R ifoper ating conditions chang e,e.g .off-
ro ad drivin g #
Adjus tthe tirep ressur easneces sary. Ti
re pressur ewhichist oo high ortool ow can:
R Shor tent he ser vice lifeo fthe tires.
R Cause increased tired amag e.
R Adversely affect drivi ng charact eristic sa nd
th us drivin gsafet y, e.g. due tohydroplaning. &
WARNIN GRisk ofan acci dent duet o
insuf ficie nttirep ress ure
Ti re sw ithp ressur ethat istool ow can over‐
heat andburstas aresult.
In addition ,the ya lso sufferf rome xcessiv e
and/or irre gular wear,w hic hc an sign ifican tly
im pair theb raking proper tiesand theh an‐
dling charact eristic s. #
Avoid excessiv elylowt irep ressur esin
all thet ires, including thes par ew heel. Ti
re pressur ewhichist oo lowc ancause:
R Tire faults asaresult ofoverheating.
R Impair edhandling charact eristic s.
R Irre gular wear.
R Incr eased fuelconsum ption. &
WARNIN GRisk ofacci dent from exces‐
siv etirep ressur e
Ti re sw ithe xcessiv elyh igh pressur ecan
bur stbecause they ared amag edmor eeasil y
by highw ayfill, po th oles etc.
In addition, they also sufferf romi rregular
we ar,w hic hc an sign ifican tlyi mp air theb rak‐
ing proper tiesand theh andling charact eris‐
tic s. #
Avoid excessiv elyhigh tirep ressur esin
all thet ires, including thes par ew heel. Ti
re pressur ewhichist oo high cancause:
R Increased brakin gdista nce
R Impaired handl ing charact eristic s
R Irre gular wear 44
8
Wheels andtires

R
Impai redd riving comf ort
R Suscep tibilitytodamag e &
WARNIN GRisk ofacci dent caused by
re peat eddrop intirep ressur e
If th et irep ressur edrops repeat edly,the
whee l,va lveo rtirem aybe damag ed.
Ins ufficie nttirep ress urec an cau sethet ires
to bur st. #
Inspect thet iref or signs offore ign
obje cts. #
Chec kwhether thew heel orvalveh asa
leak . #
Ifyo ua reunab leto rectify thed amag e,
con tact aq ualif iedspec ialistworks hop. Yo
uc an find informatio nontirep ress ures for
th ev ehicle's fact or y-ins talled tires on thef ollo w‐
ing labels :
R Tire and Loadi ngInfo rm atio nplacar donthe
B‑pi llar ofyour vehicle (/page454).
R Tire pressur etable onthei nside ofthef uel
fi ller flap (/ page449). Obse
rvet he maximum tirep ressur e
(/ page461).
Use asuitable pressur egaug etoc hec kthe tire
pr essur e.The outerappear anceofat ired oes
no tp ermit anyr eliable conclusion aboutthet ire
pr essur e.
Ve hicl eswith atirep ress urem onit oring sys‐
te m: Youc an also checkt he tirep ressur eusing
th eo n-board computer.
Onl ycorrect tirep ress ures whe nthe tires are
cold. Conditions forc old tires:
R The vehicle hasbeen parkedw itht he tires
out ofdir ect sunlight fora tlea st thre eh our s.
R The vehicle hastrave led less than 1m ile
(1 .6 km ).
Ar ise inthet iret em per atur eof18° F(10 °C)
incr eases thet irep ressur ebyappr ox.1 0k Pa
(0. 1b ar/1 .5psi ).Ta ke this int oa ccount when
ch ecking thet irep ressur eofwarmt ires .
The tirep ress urer ecom mende dfor incr eased
load/speed inthet irep ressur etable canaffect
th er ide comf ort. &
WARNIN GRisk ofacci dent duet o
uns uitable accessories ontirev alve
If yo um ountunsuit able accessories onto tire
va lves, thet irev alves ma ybeo verloaded and
malfunct ion,whic hcan cause aloss oftire
pr essur e.Afterm arke ttirep ress urem onit or‐
ing systems willcause thet irev alveto
re main open, depending onthed esign. This
can also result inaloss oftirep ressur e. #
Onlyscrew standar dvalvec aps orvalve
cap sspecifica llyapprove dby
Mer cedes-Ben zfor your vehicle onto
th et irev alve. Ti
re pres sur etable The
tirep ress uret able ison thei nside ofthe
fuel filler flap.
% The datashown inthei mag esisexam ple
dat a. Whee
lsand tires 44
9

The
tirep ressur etable showsther ecom mende d
tir ep ress ures fora lltir es app rove df or this vehi‐
cle. The recomme ndedtirep ress ures apply for
cold tires und ervarious oper ating condit ions,i.e.
loading and/orspeedofthev ehicle.
If one ormor etires izes precede atirep ressur e,
th et irep ressur einfor mation follo wing isonl y
va lid fort hose tires izes.
The load condit ions"partially laden" and"fully
laden" ared efined inthet able ford iffe re nt num ‐
be rs of passeng ersa nd amounts oflugg age. The
actual number ofseats maydiffe rf romt his. Some
tirep ressur etables onlyshowt he rim
diame teri ns tead ofthec om pletetires ize, e.g .
R1 8.T herimd iame teri sp arto fthe tires ize and
can befound onthet ires ide wall(/ page462).
Be suretoa lso obse rvet he follo wing further
re lat ed subje cts:
R Noteso ntirep ressur e(/pag e448)
R Tire and Loadi ngInfo rm atio nplacar d
(/ page454) R
Max imum tirep ressur e(/pag e461) Chec
kingtirep ressu resm anu ally #
Read thet irep ressur efor thec urrent operat‐
ing cond itions from theT irea nd Loadi ng
In fo rm atio nplacar dorthe tirep ressur e
ta ble. Obser vethen otes on tirep ressur e. #
Remo vethev alvec ap ofthet iret ob e
ch ecked. #
Press thet irep ressur egaug esecurelyo nto
th ev alve. #
Read thet irep ressur e. #
Ifth et irep ressur eislowe rthan ther ecom ‐
men dedvalue, increase thet irep ressur eto
th er ecom mende dvalue. #
Ifth et irep ressur eish igher than ther ecom ‐
men dedvalue, release air.Tod oso,press
do wn them etal pin inthev alve,e.g. using
th et ipof ap en fore xamp le.Then checkt he
tir ep ress urea gain usin gthe tirep ressur e
ga ug e. #
Screwt he valvec ap ont othe valve. 450
Wheels andtires

Fu
rther relat ed subje cts:
R Noteso ntirep ressur e(/pag e448)
R Tire pressur etable (/page449)
R Tire and Loadi ngInfo rm atio nplacar d
(/ page454) Ti
re pres sur em onitoring system Fu
nction ofthet irep ressur emonitoring sys‐
te m &
DANG ER Risk ofacc iden tdue toinc or‐
re ct tirep ress ure
Eac htire, incl uding thes par etire( ifpr esent ),
should becheckeda tleas tonceam onth
when coldandthen inflated tothep ressur e
re comme ndedbythev ehicle manufacturer
(see theT irea nd Loadi ngInfo rm atio nplac‐
ar do nthe driver's side B‑pillar orthet ire
pr essur etableon thei nside ofthef uel filler
fl ap ofyour vehicle). Ifyo ur vehicle hastires
of ad iffe re nt size than thes ize indicat edon
th eT irea nd Loadi ngInfo rm atio nplacar dor th
et irep ressur etable, youm ustfind out the
cor rect tirep ress ures fort hese tires.
As anadded safetyf eatur e,your vehicle has
been equipped withat irep ressur emonit or‐
ing system (TPMS) that illumin ates alow tire
pr essur eind icat orlam pwhen oneo rm oreo f
yo ur tires ares ign ifican tlyu nderinf lated.
Ac cor ding ly,i ft he lowt irep ressur eindicat or
lam plights up,yous hould stop and check
yo ur tires assoo nasposs ible, andinflate
th em tothec orrect press ure. Driving on a
sig nifica ntly underinf late dt irec auses thet ire
to ove rheat and canlead totiref ailur e.
Und erinf lation alsoincreases fuelconsum p‐
tion ,reduces thel ifee xpe ctan cy ofthet ire
and mayadversely affect theh andling and
br aking charact eristic so fthe vehicle. Please
no te that theT PMS isno tas ubstitutef or
pr oper tirem aint enanc e,and itis thed rive r's
re sponsibili tyto maint aincorrect tirep res‐
su re,e veni fu nder inflation hasnotreac hed
th el eve ltot rigg er illum inati on oftheT PMS
lo wt irep ressur eindicat orlam p. Yo
ur vehicle hasalso been equipped witha
TPMS malfunction indicatortoindic atew hen
th es ystemi snotoper ating proper ly.T he
TPMS malfunct ionindicat oriscombin edwith
th el ow tirep ressur eindicat orlam p.When
th es ystemd etects amalfuncti on,thei ndica‐
to rlamp willflash fora pproxima tely am inut e
and then remain continuously illumina ted.
This sequence willcontinue upon subseq uent
ve hicle star t-ups aslon gasthe malfunction
ex ists.
When them alfunct ionindicat orisillumina‐
te d, thes ystemm aynotb ea ble todetect or
sig nal lowt irep ress urea sintende d.TPM S
mal functi onsmayoccu rfor av ariety of rea‐
son s,inc ludin gthe installation ofinc om pati‐
ble replacemen toralter nat etires orwheels
on thev ehicle that prev ent theT PMS from
func tioningproper ly.
Alw aysc hec kthe TPMS malfunction warning
lam pafter replacing oneormor etires or
wheels onyour vehicle toensur ethat the
re placemen toralter nat etires and wheels Wheels
andtires 45
1

allo
wthe TPMS tocontinu etof unction prop‐
er ly. The
system checks thet irep ressur eand thet ire
te mp eratur eofthe tires installed onthev ehicle
by means ofat irep ressu resensor .
Ne wt irep ressur esensor s,e.g. inwint ertires,
ar ea utomaticall ytaught -indur ing thef irst jou r‐
ne yt heya reused.
The tirep ressur eand thet iret em per atur e
appear inthem ultifunc tiondispla y
(/ page452).
If th er ei sas ubstantia lpress urel osso rift he
tir et em per atur eise xcessiv e,youw illbe warned
in thef ollo wing ways:
R Viad ispla ymessag es(/ page535)
R Viat he 0077 warning lam pint he instrument
clus ter( /pag e554)
The tirep ressu remonit oring system isonl yan
aid. Itis thed rive r's responsibili tyto setthe tire
pr essur etot he recomme ndedcoldtirep ress ure
su itab lefort he oper ating situation. Setthe tire
pr essur efor cold tires using atirep ressu re ga
ug e. No tethat thec orrect tirep ress uref or the
cur rent operati ng situa tionm ustfirst be taught -
in to thet irep ressur emonit oring system.
In mos tcases, thet irep ressur emonit oring sys‐
te mw illa utom atical lyupd atet he newr efer enc e
va lues afte ry ou have chang edthet irep ressur e.
Yo uc an,h ow ever,a lso updat ethe refere nce val‐
ues byrestar tin gt he tirep ressur emonit oring
sy stem manuall y(/ pag e453).
Sy stem limit s
The system maybeimp aired orma ynotfunc tion
in thef ollo wing situations:
R The tirep ressur ehasbeen setinc orrectl y
R The reisas udden pressur eloss caused, for
ex am ple, byaforeign object penetratin gthe
tir e
R Ther eisam alfu nctio ncausedb yanother
ra dio signal source
Be suretoa lso paya ttent ion tothef ollo wing
re lat ed topic:
R Noteso ntirep ressur e(/pag e448) Che
ckingt he tirep ressur ewitht he tirep res‐
sur em onitoring system
Re quirement s:
R The ignit ionisswitc hedon.
On- boar dcom put er:
4 Service 5
Tires
One ofthef ollo wing displa ysappear s:
R Cur rent tirep ress ureo feachw heel: R
Tire pres sure willbedisplayed afterdriv inga
few minutes
R Tire Pres sure MonitorA ctive:t heteac h-in
pr oce ssofthes ystemi snotyetc omple te. 452
Wheels andtires

The
tirep ressur esarea lready being moni‐
to re d. #
Com parethe tirep ressur ewitht he recom‐
mend edtirep ress uref or thec urrent operat‐
ing cond ition (/ page 449). Observet he
no teso ntiret em per atur e(/pag e448).
% The values displa yedi nt he multifunction dis‐
pla ym aydeviat efromt hose ofthet irep res‐
sur egaug eastheyr efer tosea leve l.At high
altitudes, thet irep ressur evalues indicated
by ap ressur egaug earehigh erthan those
sho wnbytheo n-boar dcom put er.Int his
case, donotreduce thet irep ressur e.
Mak esuret oo bser vethef ollo wing further rela‐
te ds ubjec t:
R Noteso ntirep ressur e(/pag e448)
Re star ting thet irep ressur emonitoring sys‐
te m
Re quirement s:
R The recomme ndedtirep ress urei sc orrectl y
se tfor ther espectiv eoper ating condition on
eac hofthe four wheel s(/ pag e448). Re
star tt he tirep ressur emonit oring system in
th ef ollo wing situations:
R The tirep ressur ehaschang ed.
R The wheels ortires have been chang edor
ne wlyi ns talled.
On- boar dcom put er:
4 Service 5
Tires #
Swipe down wardso nTouc hControl on the
lef t-hand sideofthes teer ing wheel.
The Use Current Pressures asNew Refer-
ence Values? messageiss hown inthem ulti‐
func tion displa y. #
Press 0076 toconf irmt herestar t.
The Run FlatIndicat orRest arted mes sageis
sho wninthem ultifunc tiondispla y.
Cur rent wa rning mess ages ared eleteda nd
th e0077 yello ww arning lampgoes out.
Af tery ou have driven foraf ewmin utes, the
sy stem checks whe ther thec urrent tirep res‐
su resa rewit hin thes pecif iedrang e. The cur‐
re nt tirep ress ures aret hen accep teda sref‐
er ence values andmon itor ed. Mak
esuret oo bser vethef ollo wing further rela‐
te ds ubjec t:
R Noteso ntirep ressur e(/pag e448) Whe
elsand tires 453

Ra
dio -equipme ntappr oval of thet irep res‐
sur em onitoring 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 estc onf orme
au xC NR d'Indu strieC anada
applicables auxappar eilsradio
exe mptsde licence .L'expl oita ‐
tio ne stautorisée aux deux con‐
ditions suivantes:
(1) l'appa reilne doit pasproduir e
de brouillag e,et
(2) l'utilisat eurdel'appar eildoit
accep tert out brouil lageradioé‐
lectr ique subi, même sile
br ouill agee stsuscep tibled'en
com prome ttre lefonctio nneme nt. Co
untr yR adiotype approval number
US AF CCID:M RXGG4 T
FCC ID:M RXD G6W2 D4
FCC ID:M RXM C34MA4
This devic ec om pliesw ithP art1 5
of theF CC Rules. Opera tionis
subje ctto thef ollo wing twoc on‐
dition s:
(1) This device maynotcause
har mful interfere nce, and
(2) Thisd evice mustacc epta ny
int erfere nce recei ved, includin g
int erfere nce that ma ycaus e
unde sired oper ation. Load
ingthev ehic le No
teso nT irea nd Loading Information plac‐
ar d &
WARNIN GRisk ofacci dent from overloa‐
ded tires
Ov erloaded tires ma yoverheat and burstas a
con sequenc e.Ov erloaded tires can also
im pair thes teer ing and handling charact eris‐
tic sa nd lead tobrak ef ailur e. #
Obser vethel oad-bear ingcapacity of
th et ires. #
The load-bear ingcapacity mustbea t
leas thalf theg ross axle weight rating of
th ev ehicle. #
Nevero verload thet ires by exc eeding
th em aximum load. The
Tire and Loadi ngInfo rm atio nplacar diso n
th eB -pillar onthed rive r's side ofthev ehicle. 45
4
Wheels andtires