2018 MERCEDES-BENZ A-CLASS SALOON run flat

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

Be sure
toalso obse rveth efo llowing fur ther
re lated subjects:
R Notes on tyre pressure (/ page470)
R Tyre pressure table (/ page471) Re
moving the eme rgency spa rewheel The deflated eme
rgency spare wheel is secured
in the emer gency spa rewheel bag in the boot. #
Obser vethe information on mounting tyres
(/ page479). #
Open the boot. #
Detach thefast ening stra ps. #
Unhook there taining spring hooks of thefa s‐
te ning stra ps from the brac kets. #
Remo vethe emer gency spa rewheel bag with
th e emer gency spa rewheel. #
Open the emer gency spa rewheel bag and
re mo vethe emer gency spa rewheel. Inflating
the emer gency spare wheel *
NO
TEOverheating due tothe tyre infla‐
tion compressor running too long #
Do not runth e tyre inflation compres‐
sor for longer than ten minu tes without
inter ruption. Re
quirements:
R Comply with the manufacturer's saf ety no tes
on thest icke r of the emer gency spa rewheel
and on the tyre inflation compressor.
R Remo vethe tyre inflation compressor from
th estow age space under the boot floor
(/ page 450). #
Remo vesticke r1 from the tyre inflation
compressor housing and af fix it tothe instru‐
ment clus ter within the driver's field of
vision. 490
Wheels and tyres

Display messages
Possible causes/consequences and M
MSolutions &
WARNING Risk of an accident from driving wi thove rheated tyres
Overheated tyres may bur st, particularly at high speeds. #
Reduce speed so that the tyres cool down. #
Reduce speed so that the tyres cool down.
Check tyre pressures then
restart Run Flat Indicator *T
he tyre pressure loss warning sy stem generated a displ aymessa geand has not been restar ted since. #
When the tyre pressure is cor rect, restart the tyre pressure loss warning sy stem (/ page478).
Run Flat Indicator inopera-
tive *T
he tyre pressure loss warning sy stem is malfunctioning. #
Consult a qualified specialist workshop. Key
Display messages
Possible causes/consequences and M MSolutions
Á Key not detected (red dis‐
play message) *T
hekey cannot be de tected and may no longer be in theve hicle.
The key is no lon ger in theve hicle and you swit choff the engine:
R You can no lon gerst art the engine.
R You cannot centrally lock theve hicle. #
Ensure that theke y is in theve hicle. Display messages and
warning/indicator lamps 549

ïOperation only possible in
transmission position N
....................... 551
ïOperation only possible in
transmission position P ....................... 553
!Pa rking brake See Owner's
Manual ................................................ .511
Pa rking lock malfunct. Apply parking
brake .................................................. .541
Á Place theke y in the mar ked
space See Owner's Manual ................. 550
PRE-SAFE inoperative See Owner's
Manual ................................................ 520
hRe ctify tyre pressure ...................547
Re duce speed ...................................... 548
Ø Refill Ad Blue Engine start not
possible .............................................. .537
Ø Refill Ad Blue See Owne r’s Man‐
ual .......................................................5 37
! Release parking brake .................514
¸ Replace air cleaner .....................532ÀRe
placekey See Owner's Man‐
ual ...................................................... .551
Á Replace key ................................ .550
æRe servefuel le vel........................ 534
6Re stra int sys. malfunction Con‐
sult workshop ...................................... 522
Re versing not poss. Consult work‐
shop ..................................................... 541
Risk of vehicle rolling away Apply
pa rking brake See Owner's Manual .....5 42
Risk of vehicle rolling away Parking
brake not applied See Owner's Man‐
ual ........................................................ 51 5
Risk of vehicle rolling Driver door
open and transmission not in P ...........543
Ru n Flat Indicator inope rative ............. 549
# See Owner's Manual ................... 531
Speed limit (winter tyres) XXX km/h ... 530
Speed Limit Assi stinope rative ........... .531 Ð
Steering malfunction Incre ased
ph ysical ef fort See Owner's Manual .... 554
ÐSt eering malfunction See Own‐
er's Manual ......................................... 544
Ð Steering malfunction Stop
immediately See Owner's Manual .......554
# Stop vehicle Lea veengine run‐
ning ..................................................... 532
#St opvehicle See Owner's Man‐
ual .......................................................5 33
çsuspended .................................. 528
bSwitch off lights .......................... 558
bSwitch on headla mps.................. 559
Te aching in transmission comple te..... 543
Te aching in transmission Operate
selec tor le ver Brake for XX seconds
Risk of vehicle rolling .......................... .541
To shift out of P or N,depress brake
and start engine .................................. 540586
Index