2018 MERCEDES-BENZ E-CLASS SEDAN Owner's Manual

Further related subjects:
RNo tesont irep ressur e(→page356)
RTire pressur etable (→pag e357)
RTire and Loading Info rmatio nplacard
(→pag e361)
Tire pressur emonitoring sy stem
Fu nction of thet irep ressur emonitoring sys‐
te m
&
DANG ER Risk of accidentd uetoincor‐
re ct tir epressure
Ever ytire, including thes par e(if pr ovided),
should be checkedw hen cold at leas toncea
mont hand inflated tothep ressur erecom‐
mended bythev ehicle manufacturer (see
Ti re and Loading Info rmatio nplacar dont he
B-pi llaronthed rive r’ss ide or thet irep res‐
sur elabel on thei nside of thef uel filler flap
of your vehicle). If your vehicle has tires of a
dif fere nt size than thes ize indicated on the
Ti re and Loading Info rmatio nplacar dort he
tirep ressur etable, youn eedtod etermine
th ep roper tir epressur efor those tires.
As an added saf etyf eature, your vehicle has
been equipped wit hatirep ressur emonitor‐
ing sy stem (TPMS) that illuminates alow tire
pressur eindicator lam pwhen oneorm oreo f
yo ur tires ar esignif icantl yunderinflated.
Ac cordingly ,ifthe lo wtirep ressur eindicator
lam plights up, yous hould stop and check
yo ur tires as soonasp ossible, and inflate
th em tothep roper pressure. Driving on a
significantly underinflated tir ecauses thet ire
to ove rheat and can lead totiref ailure.
Und erinflation also increases fuel consump‐
tion and reduces tir etread life, and may
af fect thev ehicle's handling and braking abil‐
ity .P lease no tethat theT PMS is no tasubsti‐
tut efor proper tir emaintenance, and it is the
driver's responsibility tomaintain cor rect tire
pressure, evenifu nderinflatio nhasnot
re ached thel evel to trig gerillumination of
th eT PMS lo wtirep ressur eindicator lamp.
Yo ur vehicle has also been equipped wit ha
TPMS malfunction indicator toindicat ewhenthes ystemisn otoperating properly .The
TPMS malfunction indicator is combined with
th el ow tirep ressur eindicator lamp. When
th es ystemd etects amalfunction, thei ndica‐
to rlamp willf lashfora pproxima tely am inute
and then remain continuously illumina ted.
This sequence will continue upon subsequent
ve hicle start-ups as longast he malfunction
ex ists.
When them alfunction indicator is illumina‐
te d, thes ystem ma ynotbe able todetect or
signal lo wtirep ressur easi ntended. TPMS
malfunctions ma yoccurf orav ariety of rea‐
sons, includingt he installation of incompati‐
ble replacementora lternatetires or wheels
on thev ehicle that pr eventtheT PMS from
functioning properly.
Alw aysc hec kthe TPMS malfunction warning
lam pafter replacing one or mor etires or
wheels on your vehicle toensur ethat the
re placemen toralternat etires and wheels
allo wthe TPMS tocontinu etofunction prop‐
er ly.
Wheels and tires 359

The system checks thet irep ressur eand thet ire
te mp eratur eofthe tires fitted tothev ehicle by
means of atirep ressure sensor.
Ne wt irep ressur esensors, e.g. in winter tires,
ar ea utomaticall ytaught-in thef irst tim etheya re
driven.
The tir epressur eand thet iret emperature
appear in them ultifunction display
(
→pag e206).
If th er eisas ubstantia lpressure loss or if the
tir et emperatur eisexcessive, awarning will be
given:
RVi ad ispla ymessages (→page426).
RViat he h warning lam pinthe instrument
clus ter(→pag e456).
It is thed rive r's responsibility tosetthe tire
pressur etotherecommended cold tir epressure
suitable fort he operating situation. Se tthe tire
pressur efor cold tires using atirep ressure
ga uge. Notethat thec orrect tir epressur efor the
cur rent operating situatio nmustfirst be taught-
in to thet irep ressur emonitoring sy stem. In mos
tcases, thet irep ressur emonitoring sys‐
te mw illautom atically updat ethe ne wreference
va lues af tery ou ha vechanged thet irep ressure.
Yo uc an,h ow ever,a lso updat ethe refere nce val‐
ues byrestartin gthe tir epressur emonitoring
sy stem manuall y(
→page361).
Sy stem limitations
The sy stem ma y
bei mpaired or ma ynotfunction
in thef ollowing situations:
RIfth et irep ressur eiss etincor rectly.
RIfth er eisas udden pressur eloss caused, for
ex ample, byaforeign object penetratin gthe
tire.
RIf th er eisam alfunction caused byano ther
ra dio signal source.
Mak esuretoo bservethef ollowing fur ther rela‐
te ds ubjec t:
RNotesont irep ressur e(→page356)
Checking thet irep ressur ewitht he tir epres‐
sur em onitoring sy stem
Requ irement:
RThe ignition is switched on. On-boar
dcomputer:
,6HUYLFH.7LUHV
One of thef ollowing displa ysappears:
RCur rent tir epressur eand tir etemperatur eof
th ei ndividual wheels:
R7LUH SUHVVXUH ZLOO EH GLVSOD\HG DIWHU GULYLQJ D
IHZ PLQXWHV
R7LUH 3UHVVXUH 0RQLWRU $FWLYH:t heteach-in
process of thes ystemisn ot yetcomple te.
The tir epressures ar ealready being moni‐
to re d.
#Compar ethe tir epressur ewitht he recom‐
mended tir epressur efor thec urrent operat‐
360
Wheel sand tires

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

#Step1:loca tethes tatement" The combined
we ight of occupant sand cargo should ne ver
exc eed XXX kgor XXX lbs." ("The combined
we ight of occupant sand cargo should ne ver
exc eed XXX kgor XXX lbs.") on your vehicle's
Ti re and Loading Info rmatio nplacard.
#Ste p2:de term ine thec ombined weight of
th ed rive ra nd passenger sthat will be tra vel‐
ing in your vehicle.
#Ste p3:subtract thec ombined weight of the
driver and passenger sfromX XXkgor
XXX lbs.
#Ste p4:th er esulting figur eequals thep er‐
missible cargo and luggag eload capacity .For
ex ample: If "XXX"e quals 1400 lbs and there
ar ef iveo ccupantsiny ourvehicle wit ha
we ight of 150lbs each, them aximum cargo
and luggag eload capacity is 650 lbs (1400 -
75 0(5x1 50)= 650 lbs).
#Step5:de term ine thec ombined weight of
luggag eand cargo that thev ehicle will be
car rying. Fors afet yr easons, this we ight may
no ts afel yexceed thea vailable cargo and lug‐
ga ge load capacity calculated in step 4. Even if
youh avec alculated thet otal load care‐
full y,yo us hould still mak esuret hat them axi‐
mum permissible gross mass and them aximum
permissible axle load of your vehicle ar enot
exc eeded. De tails can be found on thev ehicle
identification plate.
#Ha ve your loaded vehicle –including driver,
occupants and load –weighed on avehicle
we ighbridge.
The measured values ma ynotexc eed the
maximu mpermissible values stated on the
ve hicle identification plate.
Fu rther related subjects:
RCalculation example ford eterminingt he max‐
imum load (→pag e363)
RTire and Loading Info rmatio nplacard
(→pag e361)
RTire pressur etable (→pag e357)
RVehicle identification plate
Calculation example ford eter mi ning the
ma ximum load
The following table sho wsexamples of ho wto
calculat etotal and load capacities wit hvarying
seatin gconfigurations and dif fere nt numbe rs
and sizes of occupants. The following examples
use amaximum load of 1500 lbs (680 kg).This
is fori llustratio npurposes on ly.Mak esure
yo ua reusingt he actual load limit fory our vehi‐
cle stated on your vehicle's Tire and Loading
Info rmatio nplacar d(
→page361).
The higher thew eight of all theo ccupants, the
smaller them aximum load forl ug gage .
Wheels and tires 363

Step1
Example 1E xamp le 2
Combine dmaximum weight of occupant sand
load (dat afromt heTire and Loading Info rmation
placard) 15
00 lbs (680 kg)1 500 lbs (680kg)
Ste p2
Example 1E xamp le 2
Numb er of people in thev ehicle (driver and
occupants) 51
Distribution of theo ccupantsF ront:2
Re ar:3 Fr
ont :1
We ight of occupant sO ccupant 1:150lbs (68 kg)
Occupant 2: 180lbs (82 kg)
Occupant 3: 160lbs (7 3kg)
Occupant 4: 140lbs (63 kg)
Occupant 5: 120lbs (5 4kg) Occupant 1: 200 lbs (9
1kg)
To talw eight of all occupant s7 50 lbs (340kg)2 00 lbs (91kg)
364
Wheels and tires

Step3
Example 1E xamp le 2
Pe rm issible load (maximum grossvehicle weight
ra ting from theT irea nd Loading Info rmation
placar dminus theg ross we ight of all occupants) 15
00 lbs (680 kg)Ò 75 0lbs (340 kg)=7 50 lbs
(340 kg) 15
00 lbs (680 kg)Ò 200 lbs (9 1kg)= 1 300 lbs
(589 kg)
Wheels and tires 365

Tire labeling
Overvie woftirel abeling
1Uni form Ti reQuality Grading Standard
(→pag e366)
2DO T,Tire Identification Number
(→pag e367)
3Maximumt irel oad(→pag e368)
4Maximumt irep ressure (→page369)
5Manufacturer
6Characteristics of thet ire(→pag e369)
7Tire size designation, load-beari ng capacity,
speed rating and load ind ex(→pag e369)
8Tire name
% The da tashown in thei mag eise xamp le
data.
Ti re Quality Grading
In accordance wit hthe US Department of Trans‐
por tation's "Unifo rm TireQuality Grading Stand‐
ards", tir emanufacturer sare re quired tograde
th eir tires on theb asis of thef ollowing thre ep er‐
fo rm anc efactors:1Tread weargrade
2Traction grade
3Te mp eratur egrade
% The dat ashown in thei mag eise xamp le
data.
% The classification is no tlegall ystipulated for
Canada, but it is general lystated.
Tr ead weargrade
The tread wear grade is acomparativ erating
based on thew ear rate ofthet irew hen tested
under controlled conditions on aspecified test
trac koft he US Department of Transpor tation.
Fo re xamp le,atireg raded 150w ould wear one
366
Wheels and tires