MERCEDES-BENZ A-CLASS HATCHBACK 2018 Owners Manual

Note
s on noise or unusual handling charac‐
te rist ics
While driving, pay attention tovibrations, noises
and unusual handling characteristics, e.g. pulling
to one side. This may indicate that the wheels or
tyres are damaged. If you suspect that a tyre is
defective, reduce your speed immediatel y.Stop
th eve hicle as soon as possible tocheck the
wheels and tyres for dama ge. Hidden tyre dam‐
age could also be causing the unusual handling
ch aracteristics. If youfind no signs of damage,
ha ve the tyres and wheels checked at a qualified
specialist workshop. Note
s onregular lyinspecting wheels and
tyres &
WARNING Risk of accident from dam‐
aged tyres
Dama ged tyres can cause tyre pressure loss.
As a result, you could lose cont rol of your
ve hicle. #
Check the tyres regularly for signs of
dama geand replace any damaged tyres
immediatel y. Car
ryout thefo llowing checks on all wheels reg‐
ularly, at least once a month or as requ ired, e.g.
prior toa long journey or driving off- road:
R Check the tyre pressure (→ page 459).
R Visually inspect tyres and wheels for dam‐
age.
R Check theva lve caps.
The valves must be pr otected against mois‐
ture and dirt bytheva lve caps appr oved
especially foryo ur vehicle byMercedes-Benz.
R Visual check of the tyre tread dep thand the
tyre contact su rface across the entire width.
The minimum tread dep thfor summer tyres
is 3 mm and for winter tyres 4 mm. Note
s on snow chains &
WARNING Risk of accident due toincor‐
re ct snow chain fitting
If yo ufit snow chains tothere ar wheels, the
snow chains may grind against theve hicle
body or chassis components.
This could cause damage totheve hicle or
th e tyres. #
Neverfit snow chains tothere ar
wheels. #
Alw aysfit snow chains tothe front
wheels in pairs. *
NO
TEDama getothe wheel trim from fit‐
te d snow chains If sn
ow ch ains are fitted tosteel wheels, the
wheel trims can be damaged. #
Remo vethe wheel trims of steel wheels
before fitting snow chains. 458
Wheels and tyres

Obser
vethefo llowing no tes when using snow
ch ains:
R Snow ch ains are on ly permissible for cer tain
wheel/tyre combinations. You can obtain
information about this from a Mercedes-Benz
Service Cent re.
R For saf etyre asons, on lyuse sn ow chainsthat
ha ve been specifically appr ovedfo ryo ur
ve hicle byMercedes-Benz, or snow chains
with the same quality standard.
R If sn ow ch ains are fitted, the maximum per‐
missible speed is 50 km/h.
R Vehicles with Active Park ing Assis t:do
not use Active Parking Assist when snow
ch ains are fitted.
% You can permanently limit the maximum
ve hicle speed for driving with winter tyres
(→ page 200).
% You can deactivate ESP ®
to pull away
( → page 189). This allo ws the wheels to
spin, achieving an increased driving forc e. Ty
re pressure Note
s on tyre pressure &
WARNING Risk of accident due toinsuf‐
fi cient or excessive tyre pressure
Underinfla ted or overinfla ted tyres pose the
fo llowing risks:
R The tyres may bur st, especially as the
load and vehicle speed increase.
R The tyres may wearexc essively and/or
une venly, which may greatlyimpair tyre
traction.
R The driving characteristics, as well as
st eering and braking, may be greatly
impaired. #
Comply with there commended tyre
pressure and check the tyre pressure of
all tyres including the spare wheel regu‐
larly:
R at least once a month
R when the load changes R
before embarking on a lon ger journey
R if operating conditions change, e.g. off-
ro ad driving #
Adjust the tyre pressure as necessar y. Driving wi
thtyre pressu rethat is too high or too
low can:
R Sho rten the service life of the tyres.
R Cause increased tyre damage.
R Adversely af fect driving characteristics and
th us driving saf ety, e.g. due toaquaplaning. &
WARNING Risk of accident from repea‐
te d tyre pressure drop
If th e tyre pressure drops repeatedl y,the
wheel, valve or tyre may be damaged.
Insuf ficient tyre pressure can cause the tyres
to bur st. #
Inspect the tyre for signs of fore ign
objects. Wheels and tyres
459

#
Check whe ther the wheel or valve has a
leak. #
Ifyo u are unable torectify the damage,
conta ct aqualified specialist workshop. Information on
there commended tyre pressure
fo rth eve hicle's factor y-fitted tyres can be found
on the tyre pressure table on the inside of the
fuel filler flap (→ page 460).
Use a suitable pressure gauge tocheck the tyre
pressure. The outer appearance of a tyre does
not permit any reliable conclusion about the tyre
pressure.
Ve hicles with a tyre pressure monitoring sys‐
te m: you can also check the tyre pressure using
th e on-board computer.
Only cor rect tyre pressures when the tyres are
cold. Conditions for cold tyres:
R The vehicle has been par ked with the tyres
out of direct sunlight for at least thre e hours.
R The vehicle has tr avelled less than 1.6 km.
A rise in the tyre temp erature of 10°C increases
th e tyre pressure byappr ox.10 kPa (0.1 bar/ 1.
5 psi). Take this into account when checking
th e tyre pressure of warm tyres.
Tr ailer operation no tes
Alw ays inflate there ar axle tyres tothere com‐
mended tyre pressures on the tyre pressure
ta ble for increased load. Ty
re pressure table The tyre pressure
table is on the inside of the
fuel filler flap. The tyre pressure
table sho ws there commended
tyre pressure for all tyres appro vedfo rth is vehi‐
cle. The recommended tyre pressures apply for
cold tyres under various operating conditions,
i.e. loading and/or speed of theve hicle.
If one or more tyre sizes precede a tyre pres‐
sure, the tyre pressure information following is
only valid forth ose tyre sizes. 460
Wheels and tyres

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&#39;ANRT MA ROC
Modele: TSSRE4A
Numero d&#39;agrement: MR 14320
ANRT 20 17
Date d&#39;agrement: 07/07/20 17
Modele: TSSSG4G6
Numero d&#39;agrement: MR 14319
ANRT 20 17
Date d&#39;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