2018 MERCEDES-BENZ E-CLASS COUPE Owner's Manual

Aluminum hub cap
#Toremo ve:position soc ket2 on hub cap
1.
% The soc ket can be found inthe tire-change
to ol kit.
#Po sition wheel wrench 3on soc ket2.
#Using wheel wrench 3, turn hub cap1
counter-clo ckwise and remo veit.
#To mount: position hub cap 1and turn
until it is compl etely flush withth e wheel.
#Po sition soc ket2 on hub cap 1.
#Attach wheel wrench 3tosoc ket2 and
tighten the hub cap clockwise.
Specified tightening torq ue: 18lb-ft
(25 Nm).
#Ra ise theve hicle (→page 367).
Ra ising theve hicle when changing a wheel
Re quirementsRThere are no persons in theve hicle.
RThe vehicle is prepared for a wheel change
(→page 366).
RThe hub caps ha vebeen remo ved
(→page 366).
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
holding theve hicle for a short time while a
wheel is being changed and not for mainte‐
nance workunder 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.
RThe base ofthe jack must be positioned ver‐
tically 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.
Wheels and tires 367

#Usingthe wheel wrench, loosen the wheel
bolts on the wheel youwish tochange by
about one full turn. Do not unscr ewthe
scr ews comple tely.Po sition of jack support points
&
WARNING Risk of injury from incorrect
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.
* NO
TEVehicle damage from the jack
Ifyo udo 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.
#Ta ke thera tchet box wrench out of the tire-
ch ange tool kit and place it on the he xagon
nut of the jack so that the letters AUF are
visible.
368 Wheels and tires

#Position jack 2at jack support point 1.
#Turn ratchet box wrench 3clockwise until
jack 2sits comple tely on ja cksupport point
1 and the base of the jack lies evenly on
th e ground.
#Continue toturn ratchet box wrench 3until
th e tire is raised a maximum of 1.2 in (3 cm)
off the ground.
#Loosen and remo vethe wheel (→page 369).
Re moving a wheel
Requirement:RThe vehicle is raised (→page 367).
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.
* NO
TEDama getothre ading from dirt on
wheel bolts
#Do not place wheel bolts in sand or on
a dirty sur face.
#Un scr ew the uppermost wheel bolt com‐
ple tely.
#Scr ew centering pin 1instead of the wheel
bolt into theth re ading.
#Un scr ew there maining wheel bolts fully.
#Re mo vethe wheel.
#Mount the new wheel (→page 369).
Mounting a new wheel
Re quirement:RThe wheel is remo ved (→page 369).
Wheels and tires 369

&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.
#Ne ver oil or grease theth re ads.
#In theeve nt of damage totheth 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
tires (→page 362).
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.
#Slide the wheel tobe mounted onto the cen‐
te ring pin and push it on.
&
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.
#Only tighten wheel bolts or wheel nuts
when theve hicle is on the ground.
#Fo r saf etyre asons, Mercedes-Benz recom‐
mends that you only use wheel bolts which
ha ve been appr oved for Mercedes-Benz vehi‐
cles, as well as forth e wheel in question.
* 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.
#Press the wheel firm lyagainst the
wheel hub when scr ewing on thefirs t
wheel bolt.
#Ti ghten the wheel bolts until they are finger-
tight.
#Un scr ew the centering pin.
#Tighten the last wheel bolt until it is finger-
tight.
#Lo we rth eve hicle (→page 370).
Lo weri ngtheve hicle af ter a wheel change
Re quirement:RThe new wheel has been ins talled
(→page 369).
#Place thera tchet wrench onto the he xagon
nut of the jack so that the letters "AB" are
visible.
#To lowe r the vehicle: turnthera tchet
wrench of the jack counter-clockwise.
37 0
Wheels and tires

#Tighten the wheel bolts evenly in a crosswise
pattern in the sequence indicated (1 to5).
Specified tightening torq ue: 111 lb-ft
(150 Nm).
& WARNING Risk of accident due toincor‐
re ct tigh tening torque
Th ewheels could come loose if the wheel
bolts or wheel nuts are not tightened tothe
prescribed tightening torque.
#Ha ve the tightening torque checked
immediately at a qualified specialist
wo rkshop af terch anging a wheel.
#Check the tire pressure of the newly moun‐
te d wheel and adjust according ly.
#Ve hicles with a tire pressure monitoring
sy stem: Restart the tire pressure monitoring
sy stem (
→page 349).
Make sure toobser vethefo llowing fur ther rela‐
te d subjec t:
RNotes on tire pressure (→page 343)
Wheels and tires 37
1

Notes ontech nical data
The data stated only appliestovehicles with
st andard equipment. You can obtain fur ther
information from an authorized Mercedes-Benz
Center.
Ve hicle electronics
Tw o-w ayradios
Note s on installing two-w ayradios
&
WARNING Risk of accident from incor‐
re ctly car ried out workon the RF trans‐
mitter
The electromagnetic radiation from RF trans‐
mitters can inter fere with theve hicle elec‐
tronics if RF transmitters are manipulate d or
re trofitted inco rrectly.
This could jeopardize the operating saf etyof
th eve hicle.
#Yo u should ha veall workon electrical
and electronic components car ried out
at a qualified specialist workshop.
&
WARNING Risk of accident from incor‐
re ct ope ration of the RF transmit ter
If yo u operate RF transmit ters incor rectly in
th eve hicle, the electromagnetic radiation
could inter fere with the on-board electronics,
e.g.:
Rif th e RF transmit ter is not connected to
an exterior antenna
Rif th eex terior antenna is not cor rectly
mounted or is not a lo w-reflection type.
This could jeopardize the operating saf etyof
th eve hicle.
#Ha ve the lo w-reflection exterior
antenna ins talled at a qualified special‐
ist workshop.
#When operating RF transmitters in the
ve hicle, alw ays connect them tothe
lo w- reflection exterior antenna.
* NO
TEInva lidation of the operating per‐
mit due tofailure tocomply wi th the
instructions for ins tallation and use
The operating permit may be in validated if
th e instructions for ins tallation and use of RF
transmitters are not obser ved.
#Only use appr oved frequency bands.
#Obser vethe maximum permissible out‐
put po wer in these frequency bands.
#Only use appr oved antenna positions.
37 2
Tech nical da ta

1Front roof area
2Re ar roof area
3Re ar fender
4Trunk lid
On vehicles with a panoramic sliding sunroof,
ins talling an antenna on the front or rear roof
area is not permitted. On
there ar fende rs, it is recommended that you
position the antenna on the side of theve hicle
closest tothe center of thero ad.
Use Tech nical Specification ISO/TS 21609 (Road
Ve hicles – EMC guidelines for ins tallation of
af te rm arke tra dio frequency transmitting equip‐
ment) when retrofitting RF (radio frequency)
transmitters. Co mply wi th th e legal requirements
fo r de tach able parts.
If yo ur vehicle has ins tallations for two-w ayradio
equipment, use the po wer supp lyor antenna
connections intended for use with the basic wir‐
ing. Be sure toobser vethe manufacturer's sup‐
plements when ins talling.
Tw o-w ayradio transmission output
The maximum transmission output (PEAK) at the
base of the antenna must not exceed theva lues
in thefo llowing table: Fr
equency band and maximum transmission
output
Fr equency band Maximum transmis‐
sion output
Sho rtwa ve
3 - 54 MHz 10
0 W
4 m band
74 - 88 MHz 30 W
2 m band
14 4 - 174 MHz 50 W
Tr unked radio sys‐
te m/T etra
380 - 460 MHz 10
W
70 cm band
420 - 450 MHz 35 W
Mobile communica‐
tions (2G/3G/4G) 10
W
Tech nical da ta37
3

Thefollowing can be used in theve hicle without
re strictions:
RRF transmitter wi tha maximum transmission
output of up to100 mW
RRF transmitters with transmitter frequencies
inthe 380 - 410 MHz frequency band and a
maximum transmission output of up to2 W
(trunked radio sy stem/T etra )
RMobile phones (2G/3G/4G)
There are no restrictions when positioning the
antenna on the outside of theve hicle forth efo l‐
lowing frequency bands:
RTr unked radio sy stem/T etra
R70 cm band
R2G/3G/4G
Ve hicle identification plate, VIN and engine
number
Ve hicle identification plate
Vehicle identification plate (USA only)
1
Pe rm issible grossmass
2Pe rm issible front axle load
3Perm issible rear axle load
4Pa int code
5VIN (vehicle identification number)
37 4
Tech nical da ta