wheel MERCEDES-BENZ A-CLASS HATCHBACK 2018 Manual Online

If
th e preceding tyre sizes are complemented by
th e+ symbol, the tyre pressure information
fo llowing sho wsalternative tyre pressures.
These tyre pressures may impr oveyour vehicle's
ri de comfort. Fuel consum ption may then
increase slightl y.
The load conditions "partially laden" and "fully
laden" are defined in theta ble for dif fere nt num‐
be rs of passengers and amounts of luggage. The
actual number of seats may dif fer from this.
Be sure toalso obse rveth efo llowing fur ther
re lated subjects:
R Notes on tyre pressure (→ page 459)Ty
re pressure moni toring sy stem Fu
nction of the ty repressure moni toring sys‐
tem
The sy stem checks the tyre pressure and the
tyre temp erature of the tyres fitted totheve hicle
by means of a tyre pressu resensor.
New tyre pressure sensors, e.g. in winter tyres,
are automatically taught-in during thefirs t jour‐
ney they are used. The tyre pressure and
the tyre temp erature
appear in the multifunction display
(→ page 461).
If th ere is a subs tantial pressure loss or if the
tyre temp erature is excessive, you will be
wa rned in thefo llowing ways:
R via display messa ges (→ page 528)
R viatheh warning lamp in the instrument
clus ter (→ page 559)
The tyre pressu remonitoring sy stem is only an
aid. It is the driver's responsibility toset the tyre
pressure tothere commended cold tyre pressure
suitable forth e operating situation. Set the tyre
pressure for cold tyres using a tyre pressu re
ga uge. Notethat the cor rect tyre pressure for
th e cur rent operating situation mu stfirs t be
tau ght-in tothe tyre pressure monitoring sys‐
te m.
In most cases, the tyre pressure monitoring sys‐
te m will auto matically update the new refere nce
va lues af teryo u ha vechanged the tyre pressure.
Yo u can, ho wever,also update there fere nce val‐
ues byrestarting the tyre pressure monitoring
sy stem manually (→ page 462). Sy
stem limitations
The sy stem may be impaired or may not function
in thefo llowing situations:
R ifth e tyre pressure is set incor rectly
R ifth ere is a sudden pressure loss caused, for
ex ample, byafo re ign object penetrating the
tyre
R ifth ere is a malfunction caused byano ther
ra dio signal source
Make sure toobser vethefo llowing fur ther rela‐
te d subjec t:
R notes on tyre pressure (→ page 459)
Checking the ty repressure with the tyre
pressure moni toring sy stem
Requ irements:
R The ignition is switched on.
On-board computer: , Service .
Tyres
One of thefo llowing displa ysappears:
R Cur rent tyre pressure and tyre temp erature
of the individual wheels: Wheels and tyres
461

R
Tyre pressures will be displayed after a few
minutes of driving
R Tyre pressure monitor active: thete ach-in
process of the sy stem is not yet compl ete.
The tyre pressures are already being moni‐
to re d. #
Compare the tyre pressure with there com‐
mended tyre pressure forth e cur rent operat‐
ing condition (→ page 460). Obse rvethe
no tes on tyre temp erature (→ page 459).
% The values displa yed in the multifunction dis‐
play may deviate from those of the tyre pres‐
sure gauge as they referto sea le vel.At high
altitudes, the tyre pressure values indicated by
a pressure gauge are higher than those
shown bythe on-board computer. In this
case, do not reduce the tyre pressure.
Make sure toobser vethefo llowing fur ther rela‐
te d subjec t:
R Notes on tyre pressure (→ page 459)
Rest arting the ty repressure moni toring sys‐
tem
Requ irements:
R The recommended tyre pressure is cor rectly
set forth ere spective operating status on
each of thefo ur wheels (→ page 459).
Re start the tyre pressure monitoring sy stem in
th efo llowing situations:
R The tyre pressure has changed.
R The wheels or tyres ha vebeen changed or
newly fitted. On-boa
rdcompu ter:
, Service .
Tyres #
Swipe down wards on Touch Control on the
left-hand side of thesteering wheel.
The Use current pressures as new reference
values? message is shown in the multifunc‐
tion displa y. #
Tobegin restart, press Touch Control on the
left-hand side of thesteering wheel.
The Tyre press. monitor restarted message is
shown in the multifunction displa y.
Cur rent wa rning messages are dele ted and
th eye llow h warning lamp goes out.
Af teryo u ha vebeen driving for a few
minutes, the sy stem checks whe ther the cur‐
re nt tyre pressures are wi thin the specified
ra nge. The cur rent tyre pressures are then
accep ted as refere nce values and monitored.
Make sure toobser vethefo llowing fur ther rela‐
te d subjec t:
R Notes on tyre pressure (→ page 459)462
Wheels and tyres

Ra
dio equipment appr oval of the ty repres‐
sure moni toring sy stem
Ra dio equipment appr oval numbers Argentina
CNC ID: H-20027 Countr
yRadio equipment appr oval
number
Ar ge ntina See ab ove
Au stra lia Brazil
MODELO:
TSSRE4A
AN ATEL: 05 181-17-06643
Es te equipamento opera em
caráter secundário, is toé, não
te m direito à pr oteção contrain‐
te rferência prejudicial, mesmo de
es tações do mesmo tipo e não
pode causar inter ferê ncia a si ste‐
mas operando em caráter pri‐
mário. Countr
yRadio equipment appr oval
number
European
Union Hiermit erklärt Huf Hülsbeck &
Für
stGmbH & Co. KG, dass der
Fu nkanlagentyp TSSRE4A &
TS SSG4G6 der Ri chtlinie
20 14 /53/EU entspricht.
Der vollständi geText der EU-Kon‐
fo rm itätserklärung ist unter der
fo lgenden In tern etadresse ver‐
fügbar: http://www.huf-
group.com/eudoc
Fr equenzband: 433,92 MHz
Abgestrahlte maximale Sende‐
leistung: <10 mW
Her steller:
Huf Elect ronics Br ette n GmbH
Ge we rbestr. 40 Wheels and tyres
463

Count
ryRadio equipment appr oval
number
75 015 Br etten
Germany
Indonesia 52 166/SDPPI/20 17
3533
Israel A.The use of this product does
not need a wireless operation
license.
B. The product does not include
an RF disturbance pr otection,
and should not disturb other
licensed products.
C. It is forbidden toreplace the
antenna or tomake any change
in this product. Count
ryRadio equipment appr oval
number
Jordan Kingdom of Jordan Type appr oval
fo rTy re Pressure Sensor and ECU
Manufacturer: Huf Elect ronics
Br ette n GmbH
Model: TSSRE4A
Ty pe Appr oval Numb er:
TRC/LPD/20 17/421
Model: TSSSG4G6
Ty pe Appr oval Numb er:
TRC/LPD/20 17/422
Mal aysia CIDF17000
184
Model: TSSRE4A & TSSSG4G6
RAQP/57A/08 17/S(17-2424) Countr
yRadio equipment appr oval
number
Morocco AGREE PAR L'ANRT MA ROC
Modele: TSSRE4A
Numero d'agrement: MR 14320
ANRT 20 17
Date d'agrement: 07/07/20 17
Modele: TSSSG4G6
Numero d'agrement: MR 14319
ANRT 20 17
Date d'agrement: 07/07/20 17
Mexico Model: TSSRE4A
IFETEL: RLVHUTS17-0806
Moldo va Oman TRA
R/4516/17
D100428 464
Wheels and tyres

Count
ryRadio equipment appr oval
number
Philip‐
pines NTC
Ty
pe Appr oved
No: ESD-17 15393C
Ru ssia Serbia
Singapor
eComplies with IDA Standards
DA 103787 Count
ryRadio equipment appr oval
number
South
Africa TA
-20 17/1393
TA -20 17/1391 Countr
yRadio equipment appr oval
number
Ta iwan CC
AO17LP0380T4
CC AO17LP0390T7
經型式認證合格之低功率射頻
電機,非經許可, 公司、商號或使
用者均
不得擅自變更頻率、加大功率
或變更原設計之特性及功能。
低功率射
頻電機之使用不得影響飛航安
全及干擾合法通信;經發現有干
擾現象
時,應立即停用, 並改善至無干擾
時方得繼續使用。前項合法通
信,指依
電信法規定作業之無線電通
信。低功率射頻電機須忍受合
法通信或工 Wheels and tyres
465

Count
ryRadio equipment appr oval
number
業、科學及醫療用電波輻射性
電機設備之干擾。
Ac cording to“Administrative Reg‐
ulations on Low Powe rRa dio
Wa vesRa diated Devices”.
Wi thout permission granted by
th e DG T,any compan y,enter‐
prise, or user is not allo wedto
ch ange frequenc y,enhance
transmitting po wer or alter origi‐
nal characteristic as well as per‐
fo rm ance toa appr oved low
po we rra dio-frequency devices.
The low po werra dio-frequency
devices shall not influence air‐
craft security and inter fere legal
communications; If found, the
user shall cease operating imme‐
diately until no inter fere nce is
achi eved.
The said legal communications
means radio communications is Countr
yRadio equipment appr oval
number
operated in compliance with the
Te lecommunications Act.
The low po werra dio-frequency
devices must be susceptible with
th e inter fere nce from le gal com‐
munications or ISM radio wave
ra diated devices.
Thailand This telecommunication equip‐
ment con form sto NTC tech nical
re qu irement.
Ukraine Model:
TSSRE4A & TSSSG4G6
UA .TR .109.0 109-17 Countr
yRadio equipment appr oval
number
United
Arab Emi‐
ra tes
(UAE) TRA
Re
gis tere d No: ER5 7806/17
Dealer No: DA369 76/14
TRA
Re gis tere d No: ER5 7807/17
Dealer No: DA369 76/14
Vi etnam Huf Hülsbe
ck& Für stGmbH &
Co. KG
Model: TSSRE4A
No: C0 112200 717AF04A2 466
Wheels and tyres

Ty
re pressure loss warning sy stem Fu
nction of the ty repressure loss warning
sy stem
The tyre pressure loss warning sy stem warnsthe
driver bymeans of display messa ges when there
is a se vere tyre pressu reloss.
Af ter a change in tyre pressure, a wheel rotation
or a tyre change, or if you ha verefitted wheels
or tyres, the tyre pressure loss warning sy stem
has tobe restar ted (→ page 467).
The tyre pressure loss warning sy stem does not
re place the need toregular lych eck the tyre
pressures.
Sy stem limitations
The sy stem may be impaired or may not function
in thefo llowing situations:
R ifth e tyre pressure is set incor rectly
R ifth ere is a sudden pressure loss caused, for
ex ample, byafo re ign object penetrating the
tyre
R ifth e pressure loss in se veral tyres decrea‐
ses at the same rate The sy
stem has a limited or dela yed function:
R when thero ad sur face is poo r,e.g. snow or
gra vel
R when driving with sn ow chains
R when driving in a very sporty driving style
with high cornering speeds or sudden accel‐
eration
R when driving with a high load
Be sure toalso obse rveth efo llowing fur ther
re lated subjects:
R Notes on tyre pressure (→ page 459)
R Display messages about the tyres
(→ page 528)
Re starting the ty repressure loss warning
sy stem
Requ irements:
R The recommended tyre pressure is cor rectly
set forth ere spective operating status on
each of thefo ur wheels (→ page 459). Re
start the tyre pressure loss warning sy stem in
th efo llowing situations:
R The tyre pressure has changed.
R The wheels or tyres ha vebeen changed or
newly fitted.
On-boa rdcompu ter:
, Service .
Tyres #
Swipe down wards on Touch Control on the
left-hand side of thesteering wheel.
The Run Flat Indicator activeRestart message
is shown in the multifunction displa y.
Re start the tyre pressure loss warning sy stem in
th efo llowing situations:
R The tyre pressure has changed.
R The wheels or tyres ha vebeen changed or
newly fitted. #
Tobegin restart, press Touch Control on the
left-hand side of thesteering wheel.
The Tyre pressure now OK? message is
shown in the multifunction displa y. #
Select Yes. Wheels and tyres
467

#
Toconfirm restart, press Touch Control on
th e left-hand side of thesteering wheel.
The Run Flat Indicator restarted message is
shown in the multifunction displa y.
Af teryo u ha vedriven for a few minutes, the
tyre pressu reloss warning sy stem monitors
th e set tyre pressures of all the tyres.
Be sure toalso obse rveth efo llowing fur ther
re lated subjects:
R Notes on tyre pressure (→ page 459)Wheel
change Note
s on selecting, fitting and replacing
tyres Yo
u can ask for information rega rding permit ted
wheel/tyre combinations at a Mercedes-Benz
Service Cent re. &
WARNING Risk of accident due toincor‐
re ct dimensions of wheels and tyres
If wheels and tyres of the wrong size are
used, the wheel brakes or wheel suspension
components may become damaged. #
Alw aysre place wheels and tyres with
th ose that fulfil the specifications of the
original part.
When replacing wheels, make sure tofit the
cor rect:
R Designation
R Type
When replacing tyres, make sure tofit the
cor rect:
R Designation
R Manufactu rer
R Type &
WARNING Risk of inju rythro ugh exceed‐
ing the specified tyre load-bearing capa‐
city or the permissible speed rating
Exceeding the specified tyre load-bearing
capacity or the permissible speed rating may
lead totyre dama geand tothe tyres bur st‐
ing. #
Therefore, only use tyre types and sizes
appr ovedfo ryo ur vehicle model. #
Obser vethe tyre load-bearing capacity
ra ting and speed rating requ iredfor
yo ur vehicle. *
NO
TEVehicle and tyre damage thro ugh
tyre types and sizes that ha venot been
appr oved Fo
r saf etyre asons, on lyuse tyres, wheels
and accessories which ha vebeen specially
appr ovedby Mercedes-Benz foryo ur vehicle. 468
Wheels and tyres

These tyres are specially adap
tedto the con‐
trol sy stems, such as ABS, ESP ®
and
4MATIC, and mar ked as follo ws:
R MO = Mercedes-Benz Original
R MOE = Mercedes-Benz Original Extended
(run-flat tyres only for cer tain wheels)
R MO1 = Mercedes-Benz Original (only cer‐
ta in AMG tyres)
Cer tain characteristics, such as handling,
ve hicle noise emissions, fuel consum ption,
et c. may otherwise be adversely af fected.
Fu rthermore, other tyre sizes could result in
th e tyres rubbing against the body and axle
components when loaded. This could result
in damage tothe tyre or theve hicle.
Only use tyres, wheels and accessories that
ha ve been checked and recommended by
Mercedes-Benz. *
NO
TERisk todriving saf ety from retrea‐
ded tyres Re
treaded tyres are nei ther tested nor rec‐
ommended byMercedes-Benz, since pr evi‐
ous damage cannot alw ays be de tected on
re treaded tyres.
Fo rth is reason driving saf ety cannot be guar‐
anteed. #
Do not use used tyres if you ha veno
information about their pr evious usage. *
NO
TEPossible damage towheels or
tyres when driving over obs tacles Lar
gewheels ha vea lo wer tyre section width.
The lo werth e tyre section width, the greater
is therisk of damage towheels or tyres when
driving over obs tacles. #
Avoid obs tacles or drive pa rticular ly
carefully. *
NO
TEDama getoelectronic component
parts from the use of tyre-fitting tools Ve
hicles with a tyre pressure monitoring
sy stem: electronic component parts are
located in the wheel. Tyre-fitting tools should
not be applied in the area of theva lve.
The tools could damage the electronic com‐
ponent parts. #
Have the tyres changed at a qualified
specialist workshop onl y. *
NO
TEDama getosummer tyres at low
ambient temp eratures At
low ambient temp eratures, tears could
fo rm when driving with summer tyres, caus‐
ing permanent damage tothe tyre. #
Attemp eratures below 7 °C, use M+S
tyres. Ac
cessory pa rts th at are not appr ovedfo ryo ur
ve hicle byMercedes-Benz or are not being used
cor rectly can impair the operating saf ety. Wheels and tyres
469

Before pu
rchasing and using non-appr oved
accesso ries, visit a qualified specialist workshop
and enquire about:
R Suitability
R Legal stipulations
R Factory recommendations &
WARNING Risk of accident wi thhigh
per form ance tyres
The special tyre tread in combination with
th e optimised tyre compound, means that
th erisk of skidding or hydroplaning on wet
ro ads is inc reased.
In addition, the tyre grip is greatly reduced at
a low outside temp erature and tyre running
te mp erature. #
Switch on the ESP ®
and adapt your
driving style accordingly. #
Use M+S tyres at outside temp eratures
of less than 50 °F. Obse
rveth efo llowing when selecting, fitting and
re placing tyres:
R Countr y-specific requirements for tyre
appro valth at define a specific tyre type for
yo ur vehicle.
Fu rthermore, the use of cer tain tyre types in
cer tain regions and areas of operation can
be highly beneficial.
R Only use tyres and wheels of the same type
(summer tyres, winter tyres, MOEx tended
tyres) and the same make.
R Only fit wheels of the same size on one axle
(left and right).
It is only permissible tofit a di fferent wheel
size in theeve nt of a flat tyre in order to
drive tothe specialist workshop.
R Only fit tyres of the cor rect size onto the
wheels.
R Do not make any modifications tothe brake
sy stem, the wheels or the tyres.
The use of shims or brake dust shields is not
permitted and may in validate theve hicle's
ge neral operating pe rmit. R
Vehicles with a tyre pressure monitoring
sy stem: allfitted wheels mu stbe equipped
with functioning sensors forth e tyre pres‐
sure monitoring sy stem.
R Attemp eratures below 7 °C, use winter tyres
or all-season tyres mar ked M+S for all
wheels.
Wi nter tyres bearing thei snowflake
symbol in addition tothe M+S marking pro‐
vide the best possible grip in wintry road
conditions.
R For M+S tyres, only use tyres with the same
tread.
R Obser vethe maximum permissible speed for
th e M+S tyres fitted.
If th is is below theve hicle's maximum speed,
th is must be indicated byan appropriate
label in the driver's field of vision.
R Run in new tyres at moderate speeds forthe
fi rs t10 0 km.
R Replace the tyres af ter six years at the latest,
re ga rdless of wear. 47 0
Wheels and tyres