2018 MERCEDES-BENZ A-CLASS SALOON wheel

R
When replacing with tyres that do not
fe ature run-flat characteristics: vehicles
with MOExtended tyres are not equipped
with a TIREFIT kit at thefa ctor y.Equip the
ve hicle with a TIREFIT kit af terre placing with
tyres that do not feature run-flat characteris‐
tics, e.g. winter tyres.
Fo r more information on wheels and tyres, con‐
ta ct a qualified specialist workshop.
Be sure toalso obse rveth efo llowing fur ther
re lated subjects:
R Notes on tyre pressure (/ page470)
R Tyre pressure table (/ page471)
R Notes on the emer gency spa rewheel
(/ page 489) Note
s on inter changing wheels &
WARNING Risk of inju rythro ugh dif fer‐
ent wheel sizes
Inter changing the front and rear wheels if the
wheels or tyres ha vediffere nt dimensions may se
verely impair the driving characteris‐
tics.
The disk brakes or wheel suspension compo‐
nents may also be damaged. #
Rotate front and rear wheels on lyifthe
wheels and tyres are of the same
dimensions. Inter
changing the front and rear wheels if the
wheels or tyres ha vediffere nt dimensions can
re nder thege neral operating pe rmit in valid.
The wear pat tern s on the front and rear wheels
dif fer:
R Front wheels wear more on the shoulder of
th e tyre
R Rear wheels wear more in the cent reofthe
tyre
On vehicles with the same front and rear wheel
size, you can inter change the wheels every
5,000 to10,000 km, depending on thewe ar.
Ensure the direction of rotation is maintained for
th e wheels. It is imperative
toobser vethe instructions and
saf ety no tes on "Changing a wheel" when doing
so Preparing theve hicle for a wheel
ch ange( / page 483). Note
s onstoring wheels When
storing wheels, obser vethefo llowing
no tes:
R Afterre moving wheels, store them in a cool,
dry and preferably dark place.
R Protect the tyres from conta ct withoil,
grease or fuel. Overview of
the ty re-change tool kit Apart from some countr
y-specific variants, vehi‐
cles are not equipped with a tyre-change tool kit.
Fo r more information on which tyre-changing
to ol kits are requ ired and appr ovedfo r per form‐
ing a wheel change on your vehicle, consult a
qu alified specialist workshop. 482
Wheels and tyres

Yo
ure qu ire thefo llowing tools, for ins tance, to
ch ange a wheel:
R jack
R chock
R wheel wrench
R centri ng pin
% The jack weighs appr oximately 3.4 kg.
The maximum load capacity of the jack can
be found on thest icke r af fixe dto the jac k.
The jack is maintenance-free. If there is a
malfunction, please conta ct aqualified spe‐
cialist workshop.
The tyre-change tool kit is located in tool bag 1
in the boot. 1
Tool bag
To ol bag 1contains:
R jack
R glov es
R wheel wrench
R cent ring pin
R folding chock
R ratchet for jack Setting up
thefo lding chock Prepa
ring theve hicle for a wheel change Re
quirements:
R The requ ired tyre-change tool kit is available.
If yo ur vehicle is not equipped with the tyre-
ch ange tool kit, consult a qualified specialist
wo rkshop tofind out about suitable tools. Wheels and tyres
483

R
The vehicle is not on a slope.
R The vehicle is on solid, non-slippery and le vel
ground. #
Apply the electric parking brake manually. #
Movethe front wheels tothest ra ight-ahead
position. #
Vehicles with manual transmission:
engage firs t or reve rsege ar. #
Vehicles with automatic transmission:
shift into position j.#
Switch off the engine. #
Make sure that the engine cann otbe star ted. #
Place choc ks orother suitable items under
th e front and rear of the wheel that is diago‐
nally opposite the wheel you wish tochange. #
Remo vethe hub caps if necessary
(/ page 484). #
Raise theve hicle (/ page 484). Re
moving and fitting hub caps Re
quirements:
R The vehicle is prepared for a wheel change
(/ page 483).
Ve hicles with steel wheels
The wheel trim co vers the wheel bolts. Before
yo u can unscr ewthe wheel bolts, you must
re mo vethe wheel trim. #
Toremo ve:using bo thhands, carefully reach
into two wheel trim openings and remo vethe
wheel trim. Plastic hub cap #
Toremo ve:turn the cent recover of the hub
cap anti-clockwise and remo vethe hub cap. #
Tofit: make sure that the cent recover of the
hub cap is turned anti-clockwise. #
Position the hub cap and turn the cent re
co ver clockwise until the hub cap engages
ph ysically and audibly. Ra
ising theve hicle when changing a wheel Re
quirements:
R There are no persons in theve hicle.
R The vehicle has been prepared for a wheel
ch ange (/ page 483).
R The hub caps ha vebeen remo ved
( / page 484).
Impor tant no tes on using the jack:
R Use only theve hicle-specific jack that has
been tested and appr ovedby Mercedes-Benz
to raise theve hicle.
R The jack is only designed forra ising and
holding theve hicle for a short time while a 484
Wheels and tyres

wheel is being
changed and not for mainte‐
nance workunder theve hicle.
R The jack must be placed on a firm ,fl at and
non-slip sur face. If necessar y,use a lar ge,
fl at, load-bearing, non-slip unde rlay.
R The foot ofthe jack must be positioned verti‐
cally under the jack support point. Ru
les of conduct when theve hicle is raised:
R Never place your hands or feet under the
ve hicle.
R Never lie under theve hicle.
R Do not start the engine and do not release
th e electric parking brake. R
Do not open or close any doors or the boot
lid. #
Using the wheel wrench, loosen the wheel
bolts on the wheel you wish tochange by
about one full turn. Do not unscr ewthe bolts
comple tely. Po
sition of jack support points &
WARNING Risk of inju ryfrom incor rect
positioning of the jack
If yo u do not position the jack cor rectly at
th e appropriate jacking point of theve hicle,
th e jack could tip with theve hicle raised. #
Only position the jack at the appropri‐
ate jacking point of theve hicle. The
base of the jack must be positioned ver‐
tically under the jacking point of the
ve hicle. Wheels and tyres
485

*
NO
TEVehicle damage from the jack If
yo u do not position the jack cor rectly at
th e appropriate jack support point of the
ve hicle, the jack could tip over with theve hi‐
cle raised. #
The jack is designed exclusively for
jacking up theve hicle at the jack sup‐
port points. #
Take thera tchet out of the tyre-change tool
kit and place it on the he xagon nut of the
jack so that the letters "AUF" are visible. #
Position jack 2at jack support point 1.
% Ifth ere is a total loss of pressure in a tyre, it
may be possible that the jack cann otbe
positioned at jack support point 1. Inthis
case, unload theve hicle. #
Turn ratchet 3clockwise until jack 2sits
comple tely on jack support point 1and the
base of the jack lies evenly on the ground. #
Turn ratchet 3until the tyre is raised a max‐
imum of 3 cm from the ground. #
Loosen and remo vethe wheel
(/ page 486). Re
moving a wheel Re
quirements:
R The vehicle is raised (/ page 484).
When changing a wheel, avoid applying any force
to the brake discs, since this could impair the
le ve l of com fort when braking.
* NO
TEDama getothre ading from dirt on
wheel bolts #
Do not place wheel bolts in sand or on
a dirty sur face. #
Unscr ew the uppermost wheel bolt com‐
ple tely. 486
Wheels and tyres

#
Screw centring pin 1into theth re ad
ins tead of the wheel bolt. #
Unscr ew there maining wheel bolts fully. #
Remo vethe wheel and, if necessar y,store it
in the boot. #
Note s onremoving an eme rgency spa re
wheel: (/page 489). #
Fitthe new wheel (/ page 487).Fi
tting a new wheel Re
quirements:
R The wheel is remo ved (/ page 486). &
WARNING Risk of accident from losing a
wheel
Oiled, greased or damaged wheel bolt/wheel
nut thre ads or wheel hub/wheel mounting
bolt thre ads can cause the wheel bolts/
wheel nuts tocome loose.
As a result, you could lose a wheel while driv‐
ing. #
Never oil or grease theth re ads. #
Intheeve nt of dama getotheth re ads,
con tact a qualified specialist workshop
immediatel y. #
Have the damaged wheel bolts or dam‐
aged hub thre ads replaced. #
Do not continue driving. #
Obser vethe information on thech oice of
tyres (/ page479).
Fo r tyres with a specified direction of rotation,
an ar rowonthe side wall of the tyre indicates
th e cor rect di rection of rotat ion. Obser vethe
direction of rotation when fitting. #
Slide the wheel tobe mounted onto the cen‐
tring pin and push it on. #
Note s onfitting an eme rgency spa re
wheel: (/page 489). &
WARNING Risk of inju ryfrom tightening
wheel bolts and nuts
If yo u tighten the wheel bolts or wheel nuts
when theve hicle is raised, the jack could tip. #
Only tighten wheel bolts or wheel nuts
when theve hicle is on the ground. #
Be sure toobser vethe instructions and
saf ety no tes on "Changing a wheel"
(/ page479). #
For saf etyre asons, on lyuse wheel bolts
which ha vebeen appr ovedby Mercedes-
Benz and forth e wheel in question. #
Tighten the wheel bolts evenly in a diagonal
pattern in the order indicated until they are
fi nger-tight. #
Unscr ew the cent ring pin. Wheels and tyres
487

#
Tighten the last wheel bolt until it is finger-
tight. #
Lowe rth eve hicle (/ page 488). Lo
weri ngtheve hicle af ter a wheel change Re
quirements:
R The new wheel has been fitted
(/ page 487).
* NO
TEDama getothe emer gency spa re
wheel when lo wering theve hicle Lo
we ring theve hicle without pr eviously
inflating the emer gency collapsible spa re
wheel can damage its rim. #
Inflate the emer gency collapsible spa re
wheel using the tyre inflation compres‐
sor before lo wering theve hicle. #
Place thera tchet onto the he xagon nut of the
jack so that the letters "AB" are visible. #
Tolowe r the vehicle: turnthera tchet of the
jack anti-clo ckwise. #
Tighten the wheel bolts evenly in a diagonal
pattern in the order indicated (1 to5 ).
Specified tightening torq ue: 130 Nm. &
WARNING Risk of inju rythro ugh incor‐
re ct tigh tening torque
The wheels could come loose if the wheel
bolts or wheel nuts are not tightened tothe
prescribed tightening torque. #
Makesure the wheel bolts or wheel
nuts are tightened tothe prescribed
tightening torque. #
Ifyo u are not sure, do not mo vethe
ve hicle. Consult a qualified specialist wo
rkshop and ha vethe tightening tor‐
qu ech ecked immediately. #
Check the tyre pressure of the newly moun‐
te d wheel and adjust according ly. #
Vehicles with tyre pressure loss warning
sy stem: restart the tyre pressure loss warn‐
ing sy stem (/ page478).
Excep tion:the new wheel is an emer gency
spa rewheel. #
Vehicles with a tyre pressure monitoring
sy stem: restart the tyre pressure monitoring
sy stem (/ page473).
Except ion:the new wheel is an emer gency
spa rewheel.
Make sure toobser vethefo llowing fur ther rela‐
te d subjec t:
R Notes on tyre pressure (/ page470) 488
Wheels and tyres

Emer
gency spare wheel Note
s onthe emer gency spare wheel &
WARNING Risk of accident caused by
incor rect wheel and tyre dimensions
The wheel or tyre size and the tyre type of
th e emer gency spa rewheel or spare wheel
and the wheel tobe replaced may dif fer.
Mounting an emer gency spa rewheel/spare
wheel may se verely impair the driving char‐
acteristics.
To preve nt hazardous situations: #
Adapt your driving style according lyand
drive carefull y. #
Neverfit more than one emer gency
spa rewheel or spare wheel that dif fers
in size. #
Only use an emer gency spa rewheel or
spare wheel of a dif fere nt size brie fly. #
Do not switch off ESP ®
. #
Have the emer gency spa rewheel or
spare wheel of a dif fere nt size replaced
at the nearest qualified specialist work‐ shop. The new wheel must ha
vethe
cor rect dimensions. Obser
vethefo llowing no tes on removing an
emergency spare wheel:
R Before stowingthe emer gency spa rewheel,
make sure there is no air left in the tyre.
If necessar y,allow the air toescape.
R Torelease air from the ty re:re mo vethe
va lve cap of the tyre.
R Press down the me tal inse rtin theva lve
using a pointed object, e.g. a pen.
R Screw theva lve cap onto theva lve.
R Stow the deflated emer gency spa rewheel in
th e emer gency spa rewheel bag in the boot
(/ page 490).
Obser vethefo llowing no tes on fitting an emer‐
ge ncy spa rewheel:
R Fitthe emer gency spa rewheel when it is
deflated (/ page 487).
R Inflate the emer gency spa rewheel af terfit‐
ting it (/ page 490). The maximum permissible speed with an emer‐
ge ncy spa rewheel fitted is 80 km/h.
Do not fit th e emer gency spa rewheel with sn ow
ch ains.
Re place the emer gency spa rewheel af ter six
ye ars at the latest, rega rdless of wear.
% Ve
hicles with a tyre pressure loss warn‐
ing sy stem: if an emer gency spa rewheel is
fi tted the tyre pressure loss warning sy stem
cann otfunction reliabl y.Only restart the sys‐
te m again when the emer gency spa rewheel
has been replaced with a new wheel.
Ve hicles with a tyre pressure monitoring
sy stem: if an emer gency spa rewheel is fit‐
te dth e tyre pressure monitoring sy stem can‐
not function reliabl y.Only restart the sy stem
again when the emer gency spa rewheel has
been replaced with a new wheel.
Ve hicles with a tyre pressure monitoring
sy stem: for a few minutes af ter an emer‐
ge ncy spa rewheel is fitted, the sy stem may
st ill display the tyre pressure of there mo ved
wheel. Wheels and tyres
489