2018 MERCEDES-BENZ E-CLASS SEDAN tire pressure

ingstatus (→pag e357). Observ ethe no tes
on tir etemperatur e(→page356).
% The values displa yedint he multifunction dis‐
pla ym aydeviat efromt hose of thet irep res‐
sur egaug east heyr efer tosea le vel.At high
altitudes, thet irep ressur evalues indicated
by pressur egauges ar ehigher than those
shown bytheo n-boar dcomputer .Inthis
case, do no treduce thet irep ressure.
Mak esuretoo bservethef ollowing fur ther rela‐
te ds ubjec t:
RNotesont irep ressur e(→page356)
Rest arting thet irep ressur emonitoring sys‐
te m
Requ irement:
RTherecommended tir epressur eisc orrectly
se tfor ther espectiv eoperating condition on
eac hoft hefour wheels(
→pag e356).
Re star tt he tir epressur emonitoring sy stem in
th ef ollowing situations:
RThe tir epressur ehaschanged.
RThe wheels or tires ha vebeen changed or
newl yins talled.
On-boar dcomputer:
,6HUYLFH.7LUHV
#Swipe down wardsont heTouc hC ontrol on
th el eft-hand side of thes teering wheel.
The 8VH &XUUHQW 3UHVVXUHV DV 1HZ 5HIHU
HQFH 9DOXHV messageisshown in them ulti‐
function displa y.
#Pressatoconfir mtherestart.
The 7LUH 3UHVV 0RQLWR U5HVWDUWHG messageis
shown in them ultifunction displa y.
Cur rent wa rning messages ar edeleteda nd
th eh yello ww arning lam pgoes out.
Af tery ou ha vedriven foraf ewminutes, the
sy stem checks whe ther thec urrent tir epres‐
sure sarewithin thes pecified range. The cur‐
re nt tir epressures ar ethen accep tedasr ef‐
erence values and monitored.
Mak esuretoo bservethef ollowing fur ther rela‐
te ds ubjec t:
RNotesont irep ressur e(→page356) Ra
dio-equipment appr oval of thet irep res‐
sur em onitoring sy stem
Ra dio equipment appr oval numbers
Countr yRadio equipment appr oval
number
Canada
USA FCC ID: MRX
AG5SP4
FCC ID: MRXMFR
IC: 2546A -AG5SP4
Fu rther information on thed eclaration of con‐
fo rm ity forw irelessv ehicle components
(
→pag e23).
Loading thev ehicle
Tire and Loading Information placard
&
WARNING Risk of accident from overloa‐
ded tires
Overloaded tires ma yoverheat and bur stas a
consequence. Overloaded tires can also
impair thes teering and handling characteris‐
tic sa nd lead tobrak efailure.
Wheels and tires 361

#Observethel oad rating of thet ires.
#The load rating must be at leasthalf the
permissible axle load of thev ehicle.
#Nevero verload thet ires by exc eeding
th em aximum load.
The Tire and Loading Info rmatio nplacar diso n
th eB -pillar on thed rive r's side of thev ehicle.
1Tire and Loading Info rmatio nplacard
%
The dat ashown in thei mag eise xamp le
data.
The Tire and Loading Info rmatio nplacar dshows :
RMaximum number of seats 2according to
th em aximum number of people permitted to
tr ave lint hevehicle.
RMaximum permissible load 3comprises the
gros sweight of all vehicle occupants, load
and luggage.
RRe commended tir epressures 1forc old
tires. The recommended tir epressures are
va lid fort he maximum permissible load and
up tothem aximum permissible vehicle
speed.
Please also no te:
RInformation on permissible weightsa nd loads
on thev ehicle identification plate
(
→pag e386).
RInformation on tir epressur eont he tirepres‐
sur etable (→pag e357).
Fu rther related subjects:
RDe term inin gthe maximum permissible load
(→pag e362)
RNotesont irep ressur e(→page356)
Determ ining them aximum permissible load
The following steps ha vebeen de veloped as
re qu ired of all manufacturer sunder Title 49,
Code of U.S. Federal Regulations, Part57 5, pur‐
suant tothe" Na tional Traf fica nd Mo torV ehicle
Saf etyA ct of 1966".
362
Wheels and tires

Nevere xceed maximum tir epressure 1speci‐
fi ed fort he tire.
Information on tir echaracteristics
%
The dat ashown in thei mag eise xamp le
data.
This information descri besthet ype of tir ecord
and then umber of la yers in side wall1 and
under tir etread 2.
Tire size designation, load-bearing capacity,
speed ratin ga nd load index
&
WARNING Risk of injury thro ugh exceed‐
ing thes pecified tir eload rating or the
permissible speed rating
Exceeding thes pecified tir eload rating or
th ep ermissible speed rating ma ylea dtot ire
damage andtothet ires bur sting.
#Therefore, onl yuse tir etypes and sizes
appr ovedfor your vehicle model.
#Obser vethet irel oad rating and speed
ra ting requ ired fory our vehicle.
1Preceding letter
2Nominal tir ewidthinm illimeters
3Aspect ratio in %
4Tire code
5Rimd iame ter
6Load-bearing index
7Speed rating
8Loadi ndex
% The dat ashown in thei mag eise xamp le
data.
Info rmatio nabout readingt ired atac an be
obtaine dfroma nyqualified specialis tworks hop.
Wheels and tires 369

IndexS peedrating
ZR...Y
1up to186m ph (300 km/h)
ZR...(..Y)
1ove r186 mph(300 km/h )
ZR
1ove r149 mph(240k m/h)
RSpecifying thes peed rating as the" ZR" index
in tir ecode 4is optional fort ires up to
18 6m ph (300 km/h).
RIfyo ur tir ecode4 includes "ZR"andthere
is no speed rating 7,f ind out what them ax‐
imum speed is from thet irem anufacturer.
RIf load-bearing index 6and speed rating 7
ar einb rack ets, them aximum speed rating of
yo ur tir eisa bove 186m ph (300 km/h). To
fi nd outt he maximum speed, ask thet ire
manufacturer. All-weather tires and winter tires
Inde
xS peedrating
QM +S
2upto100m ph (160 km/h)
TM +S
2upto118m ph (190 km/h)
HM +S
2upto130m ph (2 10km/h)
VM +S
2upto149m ph (240 km/h)
Winter tires bear thei snowflak esymbol
and fulfill ther equirements of theR ubber Manu‐
fa cturer sAssociation (RMA) and theR ubber
Associatio nofCanada (RAC) rega rding thet ire
traction on sno w.
Load index 8
:RNo specification given: standar dload (SL)
tire
R"XL" or "Extra Load": extral oa dt ireorr ein‐
fo rc ed tire
R"Light Load": light load tire
R"C", "D", "E": aload rang et hat depe ndso n
th em aximum load that thet irec an car ryat a
cer tain pressure
Definition of termsfor ti resa nd loading
Ti re stru ctureand characteristics: describes
th en umber of la yers or then umber of rubber-
coated belts in thet irec ontact surf ace and the
tir ew all. These ar emade of steel, nylon, poly‐
es tera nd other materials.
Bar: metric unit fort irep ressure .
14 .5038 pounds per squar einc h( psi) and
10 0k ilopasca l(kPa) is thee quivalent of one bar.
DO T(Department of Transport ation):DOT-
mar kedt ires fulfill ther equirements of the
US Department of Transpor tatio n.
Av erag eweight of thev ehicle occupants: the
numbe rofvehicle occupants forw hich th evehi‐
cle is designed, multiplied by150lb( 68kg).
1"ZR" stated in thet irec ode.2Or "M+S i"for winter tires
Wheels and tires 37
1

Unifor mT ireQ uality Grading Standards: a
unifor mstandar dtog rade theq ualityoft ires
wit hregar dtot read quality, tiret raction and
te mp eratur echaracteristics. The qualityg rading
assessment is made bythem anufacturer follow‐
ing specifications from theU .S. go vernment. The
qu alityg rade of atireisi mprinted on thes ide
wa ll of thet ire.
Re commende dtirep ressure :th er ecommen‐
ded tir epressur eist he tir epressur especified
fo rt he tires mounted tothev ehicle at thef ac‐
to ry.
The tir eand information table conta insther ec‐
ommended tir epressures forc old tires, them ax‐
imum permissible load and them aximum per‐
missible vehicle speed.
The tir epressur etable con tains ther ecommen‐
ded tir epressures forc old tires under various
operating conditions, i.e. loading and/or speed
of thev ehicle.
Increased vehicl eweight due tooptional
equipment: thec ombined weight of all standard
and optional equipment available fort he vehicle, re
ga rdless of whe ther it is actually ins talled on
th ev ehicle or not.
Rim: thep artoft he wheel on whic hthe tir eis
ins talled.
GA WR (Gross Axl eWeight Rating): theG AWR
is them aximum permissible axle load. The
actual load on an axle mus tnever exc eed the
gros saxle weight rating .The gross axl eweight
ra ting can be found on thev ehicle identification
plat eont he B‑pillar on th
ed rive r's side.
Speed rati

ng: thes peed rating is pa rtof thet ire
identification .Itspecifies thes peed rang ef or
whic hatireisa pprove d.
GV W( Gross Vehicl eW eight): theg ross vehicle
we ight comprises thew eight of thev ehicle
including fuel, tools, thes par ew heel, accesso‐
ri es ins talled, occupants, luggag eand thet railer
dr aw bar nose weight,ifa pplicable. The gross
ve hicle weight mus tnotexc eed theg ross vehicle
we ight rating GVWR as specified on thev ehicle
identification plat eonthe B‑pillar on thed rive r's
side.
GV WR (Gross Vehicl eW eight Rating): the
GV WR is them aximum permitted gross weight of
thef ully laden vehicle (weight of thev ehicle
including all accessories, occupants, fuel, lug‐
ga ge and thet railer dr awbar nose weight if appli‐
cable). The grossvehicle weight rating is speci‐
fi ed on thev ehicle identification plat eonthe
B‑pi llaronthed rive r's side.
Maximum weight of thel aden vehicle: the
maximu mweight is thes um of thec urb weight
of thev ehicle, thew eight of thea ccessories, the
maximu mloada ndthew eight of optional equip‐
ment ins talled at thef actor y.
Kilopasca l(kP a): metr icunit fort irep ressure .
6.9 kP acorresponds to1p si.A nother unit for
tir ep ressur eisb ar.1 00 kilopasca l(kPa) equals
1b ar.
Load index: in additiontothel oad-bearing
index, thel oad inde xmayalso be imprinted on
th es ide wall of
thet ire. This specifies thel oad-
bearing capacit
y of thet irem orep recisel y.
Cur bw eight: thew eight of avehicle wit hstand‐
ar de quipment includingt he maximum capacity
of fuel, oil and coolant. It also includes thea ir
conditionin gsystema nd optional equipment if
372
Wheels and tires

these ar einstalled on thev ehicle, but does not
include passenger sorluggage.
Maximum tir eload: them aximum tir eload is
th em aximum permissible weight in kilog rams or
lbs forw hich atireisa pprove d.
Maximum permissible tir epressure: maxi‐
mum permissible tir epressur efor one tire.
Maximum load on one tire: maximumloado n
one tire. This is calculated bydividing them axi‐
mum axle load of one axle bytwo.
PSI (pounds per squar einch) :st andar dunit of
measurementf or tirepressure .
Aspect ratio: ratio betwee ntire height and tire
widt hinp ercent.
Tir ep ress ure: pressur einside thet irea pplying
an outwar dforce toeve rysquar einc hoft he tire.
The tir epressur eiss pecified in pounds per
squar einc h( psi), in kilopascals (kPa) or in bar.
The tir epressur eshould onl ybecorrected when
th et ires ar ecold.
Cold tir epressure: thet ires ar ecold when the
ve hicle has been par kedf or at leas t3hours without direct sunlight on
thet ires or thev ehicle
has been driven forl ess than 1m ile (1.6 km).
Ti re contact sur face: thep artoft he tir ethat
comes int ocontact wi th theroad.
Ti re bead: thep urpose of thet ireb ead is to
ensur ethat thet ires its securel yonthe wheel
ri m. Ther eareseveralw irec ores in thet ireb ead
to preve ntthet iref romc hanging lengt honthe
whee lrim.
Side

w all: thep artoft he tir ebetwe en thet read
and thet ireb ead.
We ight of optiona lequ ipment: thec ombined
we ight of theo ptional equipment weighingm ore
th an ther eplaced standar dparts and mor ethan
5l bs (2. 3kg).T his optional equipment, suc has
high-per form anc ebrake s, le velc ontrol sy stem, a
ro of luggag erackorh igh-per form anc ebatte ries,
is no tincluded in thec urb weight and thew eight
of thea ccessories.
TIN (Tir eIdentification Number): auniqu e
identification number whic hcan be used bya
tir em anufactu rertoi dentify tires, fore xamp le,
in ap roductr ecall, and thus identif ythe pur‐
ch asers. The TIN is made up of them anufactur‐ er's identit
ycode, tir esize, tir etype code and
th em anufacturing date.
Load-bearing index: thel oad-bearing inde xisa
code that con tains them aximum load-bearing
capacity of atire.
Tr action: traction is theg ripr esulting from fric‐
tion between thet ires and ther oad sur face.
We ar indicator: narrow bars(tread wear bars)
th at ar edistributed overthe tir econtact surf ace.
If th et iret read is le velw itht he bars, thew ear
limit of 1/1 6in(1.6m m) has been reached.
Distribution of vehicl eoccupants: distribution
of vehicle occupants over designated seat posi‐
tion sinav ehicle.
Maximum permissible pa yload weight: nomi‐
nal load and luggag eload plus 150lb( 68kg
)
mu

ltipliedbyt he number of seats in thev ehicle.
Wheels and tires 37
3

Tire s
Displa ymessages
Possible causes/consequences and MSolutions
h
3OHDVH &RUUHFW 7LUH 3UHV
VXUH*T
he tir epressur eist oo lo winatl eastone of thet ires, or thet irep ressur ediffe re nce betwee nthe wheels is too
great.
#Chec kthe tir epressur eand add air ,ifnecessar y.
#Whenthet irep ressur eisc orrect, restar tt he tir epressur emonitoring sy stem.
h
&KHFN 7LUHV *T
he tir epressur eino ne or mor etires has dropped significantl y.The wheel position is displa yed.
&
WARNING Risk of an accident duetoi nsufficient tir epressure
Ti re pressures that ar etoo lo wpose thef ollowing hazards:
RThe tires ma yburst,e speciall yasthe load and vehicle speed increase.
RThe tires ma ywear excessively and/or une venly, whic hmaygreatl yimp air tir etraction.
RThe drivin gcharacteristics, as well as steering and braking, ma ybegreatl yimp aired.
Yo uc ouldthen lose control of thev ehicle.
#Obser vether ecommende dtirep ressure.
#Ad jus tthe tir epressur eifn ecessar y.
#Stop thev ehicle, paying attention toroad and traf ficc onditions.
#Chec kthe tir epressur eand thet ires.
426
Displa ymessages and warning/indicator lamps

Tire s
Wa rning/indicator lamp
Possible causes/consequences and MSolutions
h
Tire pressur emonitoring
sy stem warning lam plights
up The
yello wt irep ressur emonitoring sy stem warning lam p(pressur eloss/malfunction) is lit.
The tir epressur emonitoring sy stem has de tected tir epressur elossinatl east one of thet ires.&
WARNING Risk of an accident duetoi nsufficient tir epressure
Ti re pressures that ar etoo lo wpose thef ollowing hazards:
RThe tires ma yburst,e speciall yasthe load and vehicle speed increase.
RThe tires ma ywear excessively and/or une venly, whic hmaygreatl yimp air tir etraction.
RThe drivin gcharacteristics, as well as steering and braking, ma ybegreatl yimp aired.
Yo uc ouldthen lose control of thev ehicle.
#Obser vether ecommende dtirep ressure.
#Ad jus tthe tir epressur eifn ecessar y.
#Stop thev ehicle, paying attention toroad and traf ficc onditions.
#Chec kthe tir epressur eand thet ires.
456
Displa ymessages and warning/indicator lamps