2018 MERCEDES-BENZ C-CLASS CABRIOLET warning

0007
Select Yes. 0007
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 (0013 page 432)Wheel
change Note
s on selecting, fitting and replacing
tyres Mercedes
-AMG vehicles: observeth e no tes in
th e Supplement. Otherwise, you may failto rec‐
ognise dangers.
Yo u can ask for information rega rding permit ted
wheel/tyre combinations at a Mercedes-Benz
Service Cent re. 000A
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. 0007
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 000A
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. 0007
Therefore, only use tyre types and sizes
appr ovedfo ryo ur vehicle model. 0007
Obser vethe tyre load-bearing capacity
ra ting and speed rating requ iredfor
yo ur vehicle. 000E
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. Wheels and tyres
441

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 000A
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. 0007
Switch on the ESP ®
and adapt your
driving style accordingly. 0007
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 the004D 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. Wheels and tyres
443

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 (0013 page 432)
R Tyre pressure table (0013 page 433)
R Notes on the emer gency spa rewheel
(0013 page 451) Note
s on inter changing wheels 000A
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. 0007
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( 0013 page445). 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 Mercedes-AMG
vehicles: observeth e no tes in
th e Supplement. Otherwise, you may failto rec‐
ognise dangers.
Apa rtfrom 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. 444
Wheels and tyres

Po
sition of jack support points
Mercedes-AMG vehicles: observeth e no tes in
th e Supplement. Otherwise, you may failto rec‐
ognise dangers. 000A
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. 0007
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. 000E
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. 0007
The jack is designed exclusively for
jacking up theve hicle at the jack sup‐
port points. 0007
Position jack 2at jack support point 1. 0007
Turn crank 3clockwise until jack 2sits
compl etely on jack support point 1and the
base of the jack lies evenly on the ground. 0007
Turn crank 3until the tyre is raised a maxi‐
mum of 3 cm from the ground. 0007
Loosen and remo vethe wheel
(0013 page449). 448
Wheels and tyres

Re
moving a wheel Re
quirements:
R The vehicle is raised (0013 page447).
Mercedes-AMG vehicles: observeth e no tes in
th e Supplement. Otherwise, you may failto rec‐
ognise dangers.
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.
000E NO
TEDama getothre ading from dirt on
wheel bolts 0007
Do not place wheel bolts in sand or on
a dirty sur face. 0007
Unscr ew the uppermost wheel bolt com‐
ple tely. 0007
Screw centring pin 1instead of the wheel
bolt into theth re ading. 0007
Unscr ew there maining wheel bolts fully. 0007
Remo vethe wheel. 0007
Fitthe new wheel (0013 page449). Fi
tting a new wheel Re
quirements:
R The wheel is remo ved (0013 page449).
Me rcedes-AMG vehicles: observeth e no tes in
th e Supplement. Otherwise, you may failto rec‐
ognise dangers. 000A
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. 0007
Never oil or grease theth re ads. 0007
Intheeve nt of dama getotheth re ads,
con tact a qualified specialist workshop
immediatel y. 0007
Have the damaged wheel bolts or dam‐
aged hub thre ads replaced. 0007
Do not continue driving. 0007
Obser vethe information on thech oice of
tyres (0013 page441).
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. Wheels and tyres
449

0007
Slide the wheel tobe mounted onto the cen‐
tring pin and push it on. 000A
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. 0007
Only tighten wheel bolts or wheel nuts
when theve hicle is on the ground. 0007
Be sure toobser vethe instructions and
saf ety no tes on "Changing a wheel"
(0013 page441). 0007
For saf etyre asons, on lyuse wheel bolts
which ha vebeen appr ovedby Mercedes-
Benz and forth e wheel in question. 0007
Tighten the wheel bolts evenly in a diagonal
pattern in the order indicated until they are
fi nger-tight. 0007
Unscr ew the cent ring pin. 0007
Tighten the last wheel bolt until it is finger-
tight. 0007
Ifth e collapsible emer gency spa rewheel has
been fitted, infla tethe collapsible emer gency
spa rewheel (0013 page 452). 0007
Lowe rth eve hicle (0013 page 450). Lo
weri ngtheve hicle af ter a wheel change Re
quirements:
R The new wheel has been fitted
(0013 page 449).
000E 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. 0007
Inflate the emer gency collapsible spa re
wheel using the tyre inflation compres‐
sor before lo wering theve hicle. 0007
Tolowe r the vehicle: turnthe crank of the
jack anti-clo ckwise until theve hicle is once
again standing firm lyon the ground. 0007
Tighten the wheel bolts evenly in a diagonal
pattern in the order indicated (1 to5 ).
Specified tightening torq ue: 130 Nm. 000A
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. 0007
Makesure the wheel bolts or wheel
nuts are tightened tothe prescribed
tightening torque. 0007
Ifyo u are not sure, do not mo vethe
ve hicle. Consult a qualified specialist 450
Wheels and tyres

wo
rkshop and ha vethe tightening tor‐
qu ech ecked immediately. 0007
Check the tyre pressure of the newly moun‐
te d wheel and adjust according ly.0007
Vehicles with tyre pressure loss warning
sy stem: restart the tyre pressure loss warn‐
ing sy stem (0013 page440).
Except ion:the new wheel is an emer gency
spa rewheel. 0007
Vehicles with a tyre pressure monitoring
sy stem: restart the tyre pressure monitoring
sy stem (0013 page 435).
Exception: 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 (0013 page 432) Emer
gency spare wheel Note
s onthe emer gency spare wheel 000A
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: 0007
Adapt your driving style according lyand
drive carefull y. 0007
Neverfit more than one emer gency
spa rewheel or spare wheel that dif fers
in size. 0007
Only use an emer gency spa rewheel or
spare wheel of a dif fere nt size brie fly. 0007
Do not switch off ESP ®
. 0007
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. Check
the tyre pressure of the emer gency spa re
wheel fitted. Co rrect the pressure as necessar y.
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.
0009 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. Wheels and tyres
451

Note
s ontech nical data
Mercedes-AMG vehicles: be sure toobser ve
th e no tes in the Supplement. Otherwise, you
may failto recognise dangers.
The tech nical da tawa s de term ined in accord‐
ance with EU Directives. The data stated on ly
applies tovehicles with standard equipment. Yo u
can obtain fur ther information from a Mercedes-
Benz Service Centre.
Only for ce rtain countries: you can find vehi‐
cle-specific vehicle data in the EC-Certificate of
Conformity (CERTIFIC ATE OF CONFORMITY).
These documents are deli vered with your vehi‐
cle. On-board electronics
Note
s on tampering with the engine elec‐
tronics 000E
NO
TEPremature wearthro ugh improper
main tenance Improper maintenance may cause
vehicle
components towe ar more quickly and the
ve hicle's operating permit may be in valida‐
te d. 0007
Alw ays ha vewo rkon the engine elec‐
tronics and related components car ried
out at a qualified specialist workshop. Tw
o-w ayradios Note
s onfitting two-w ayradios 000A
WARNING Risk of accident due to
improper workon two-w ayradios
The elect romagnetic radiation from two-w ay
ra dios can inter fere with the on-board elec‐ tronics if RF transmit
ters are manipulated or
re trofitted inco rrectly.
This could jeopardise the operating saf ety of
th eve hicle. 0007
You should ha veall workon electrical
and electronic components car ried out
at a qualified specialist workshop. 000A
WARNING Risk of accident from incor‐
re ct ope ration of two-w ayradios
If yo u operate two- wayra dios inco rrectly in
th eve hicle, the electromagnetic radiation
could inter fere with the on-board electronics,
e.g.:
R ifth e two-w ayradio is not connec tedto
an exterior aerial
R ifth eex terior aerial is not cor rectly
mounted or is not of low reflection
This could jeopardise the operating saf ety of
th eve hicle. 0007
Have the lo w-reflection exterior aerial
fi tted at a qualified specialist workshop. 454
Tech nical da ta