2018 MERCEDES-BENZ E-CLASS CABRIOLET clock

Setting upthefo lding wheel chock
Prepa ring theve hicle for a wheel change
Re quirementsRThe requ ired tire-change tool kit is available.
If yo ur vehicle is not equipped with the tire-
ch ange tool kit, consult a qualified specialist
wo rkshop tofind out about suitable tools.
RThe vehicle is not on a slope.
RThe vehicle is on solid, non-slippery and le vel
ground .
00BBApplythe electric parking brake manually.
00BBMo vethe front wheels tothest ra ight-ahead
position.
00BBVe hicles with automatic transmission:
shift into position 005D.
00BBVehicles with AIR BODY CONT ROL:set the
normal vehicle le vel (→page 173).
00BBSwitch off the engine.
00BBMake sure that the engine cannot bestar ted.
00BBPlace choc ks orother suitable items under
th e front and rear of the wheel that is diago‐
nally opposite the wheel youwish tochange.
00BBRe mo vethe hub caps if necessary
(→page 377).
00BBRa ising theve hicle (→page 378).
Re moving and in stalling hub caps
Re quirement:RThe vehicle is prepared for a wheel change
(→page 377).
Plas tic hub cap
00BBToremo ve:turn the center co ver of the hub
cap anti-clockwise and remo vethe hub cap.
00BBTo install: make sure that the center co ver of
th e hub cap is turned anti-clockwise.
00BBPo sition the hub cap and turn the center
co ver clockwise until the hub cap engages
ph ysically and audibly.
Wheels and tires 37
7

Aluminum hub cap
00BBToremo ve:position soc ket2 on hub cap
1.
00CE The soc ket can be found inthe tire-change
to ol kit.
00BBPo sition wheel spanner 3on soc ket2.
00BBUsing wheel spanner 3, turn hub cap1
counter-clo ckwise and remo veit.
00BBTo install: position hub cap 1and turn until
it is comple tely flush withth e wheel.
00BBPo sition soc ket2 on hub cap 1.
00BBAttach wheel spanner 3tosoc ket2 and
tighten the hub cap clockwise.
Specified tightening torq ue: 18lb-ft
(25 Nm).
00BBRa ise theve hicle (→page 378).
Ra ising theve hicle when changing a wheel
Re quirements:RThere are no persons in theve hicle.
RThe vehicle has been prepared for a wheel
ch ange (→page 377).
RThe hub caps ha vebeen remo ved
(→page 377).
Impor tant no tes on using the jack:
Ronly use theve hicle-specific jack that has
been tested and appr ovedby Mercedes-Benz
to raise theve hicle.
Rthe jack is only designed forra ising and hold‐
ing theve hicle for a short time while a wheel
is being changed and not for maintenance
wo rkunder theve hicle.
Rthe jack must be placed on a firm ,fl at and
non-slip sur face. If necessar y,use a lar ge,
load-bearing, non-slip underla y.
Rthefo ot ofthe jack must be positioned verti‐
cally under the jack support point.
Ru les of conduct when theve hicle is raised:
RNe ver place your hands or feet under the
ve hicle.
RDo not lie under theve hicle.
RDo not start the engine and do not release
th e electric parking brake.
RDo not open or close any doors or the trunk
lid.
37 8
Wheels and tires

00BBPosition jack 2at jack support point 1.
00BBTurn ratchet ring spanner 3clockwise until
jack 2sits comple tely on ja cksupport point
1 and the base of the jack lies evenly on
th e ground.
00BBContinue toturn ratchet ring spanner 3
until the tire is raised a maximum of 1.2 in
(3 cm) off the ground.
00BBLoosen and remo vethe wheel (→page 380).
Re moving a wheel
Requirement:RThe vehicle is raised (→page 378).
When changing a wheel, avoid applying any forc e
to the brake discs, since this could impair the
le ve l of com fort when braking.
0075 NO
TEDama getothre ading from dirt on
wheel bolts
00BBDo not place wheel bolts in sand or on
a dirty sur face.
00BBUn scr ew the uppermost wheel bolt com‐
ple tely.
00BBScr ew centering pin 1instead of the wheel
bolt into theth re ading.
00BBUn scr ew there maining wheel bolts fully.
00BBRe mo vethe wheel.
00BBIns tallth e new wheel (→page 380).
Installing a new wheel
Re quirement:RThe wheel is remo ved (→page 380).
380
Wheels and tires

0071WARNING 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.
00BBNe ver oil or grease theth re ads.
00BBIn theeve nt of damage totheth re ads,
con tact a qualified specialist workshop
immediatel y.
00BBHave the damaged wheel bolts or dam‐
aged hub thre ads replaced.
00BBDo not continue driving.
00BBObser vethe information on thech oice of
tires (→page 373).
Fo r tires with a specified direction of rotation, an
ar row onthe side wall of the tire indicates the
cor rect dire ction of rotation. Observ eth e direc‐
tion of rotation when ins talling.
00BBSlide the wheel tobe mounted onto the cen‐
te ring pin and push it on.
0071
WARNING Risk of injury from tightening
wheel bolts and nuts
If yo u tighten the wheel bolts or wheel nuts
when theve hicle is raised, the jack could tip.
00BBOnly tighten wheel bolts or wheel nuts
when theve hicle is on the ground.
00BBFo r saf etyre asons, only use wheel bolts
which ha vebeen appr ovedby Mercedes-
Benz and forth e wheel in question.
0075 NO
TEDama getopaintwork of the wheel
ri m when scr ewing on thefirs t wheel bolt
If th e wheel has too much play when scr ew‐
ing in thefirs t wheel bolt, the wheel rim paint
can be dama ged.
00BBPress the wheel firm lyagainst the
wheel hub when scr ewing on thefirs t
wheel bolt.
00BBTi ghten the wheel bolts until they are finger-
tight.
00BBUn scr ew the centering pin.
00BBTighten the last wheel bolt until it is finger-
tight.
00BBLo we rth eve hicle (→page 381).
Lo weri ngtheve hicle af ter a wheel change
Re quirements:RThe new wheel has been ins talled
(→page 380).
00BBPlace thera tchet ring spanner onto the he xa‐
gon nut of the jack so that the lettering "AB"
is visible.
00BBTo lowe r the vehicle: turnthera tchet ring
spanner of the jack anti-clockwise.
Wheels and tires 381