2021 MERCEDES-BENZ S-CLASS SALOON LONG Owners Manual

Pr
Pr
epar
epar ing t
ing the v
he vehicle f
ehicle f or a wheel c
or a wheel c hange
hange R
R
eq
eq uir
uir ements:
ements:
R The vehicle is not on a slope.
R The vehicle is on solid, non-slippery and le vel
gr ound.
R The requ ired tyre-change tool kit is available.
% Ifyo ur vehicle is not equipped with the tyre-
ch ange tool kit, consult a quali/ed specialist
wo rkshop to/nd out about sui table tools. #
Apply the electric parking brake manuall y.#
Movethe front wheels tothe straight-ahead
position. #
ShiT the transmission toposition j. #
V
Vehicles wit
ehicles wit h lev
h level contr
el contr ol syst
ol system:
em:setthe nor-
mal vehicle le vel (/ page 305). #
Switch o. theve hicle. #
Make sure that theve hicle cann otbe star ted. #
Place choc ks orother suitable items under the
front and rear of the wheel that is diagonal ly
opposite the wheel you wish tochange. #
Remo vethe hub cap if necessary
(/ page 470). #
Raise theve hicle (/ page 471). R
R
emo
emo ving and
ving and /tting
/ttingt
the wheel tr
he wheel tr im/hub caps
im/hub caps R
R
eq
eq uir
uir ements:
ements:
R The vehicle is prepared for a wheel change
(/ page 470). Aluminium hub cap
Aluminium hub cap #
T
To r
o r emov
emov e:
e:position soc ket2 from the tyre-
ch ange tool kit on hub cap 1. #
Position wheel spanner 3on soc ket2. #
Using wheel spanner 3, turn hub cap1
anti-clockwise and remo veit. #
T
To
o /t:
/t: follow the inst ructions abo veinreve rse
order.
% Speci/ed
Speci/ed tight
tightening t
ening t orq
orque:ue: 25 Nm. 470
470
Wheels and tyres

R
R
aising t
aising t he v
he vehicle when c
ehicle when c hanging a wheel
hanging a wheel R
R
eq
eq uir
uir ements:
ements:
R There are no persons in theve hicle.
R The vehicle has been prepared for a wheel
ch ange (/ page 470).
R The hub caps ha vebeen remo ved
( / page 470).
Impor tant no tes on using the jack:
R Use only a vehicle-speci/c jack that has been
appr ovedby Mercedes-Benz toraise theve hi-
cle.
R The 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.
R The jack must be placed on a /rm, 0at and
non-slip sur face.
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 and/or feet under the
ve hicle.
R Never lie under theve hicle. R
Do not start the engine and do not release the
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. Wheels and tyres
471 471

Po
sition of jack support points &
W
WARNING
ARNING Risk of injury from inco rrect
positioning of the jack
If yo u do not position the jack cor rectly at the
appropriate jacking point of theve hicle, the
jack could tip wi th theve hicle raised. #
Only position the jack at the appropriate
jacking point of theve hicle. The base of
th e jack must be positioned vertically
under the jacking point of theve hicle. *
N
NOOTE
TE Vehicle damage from the jack If
yo u do not position the jack cor rectly at the
appropriate jack support point of theve hicle,
th e jack could tip over with theve hicle raised. #
The jack is designed exclusively for jac k-
ing up theve hicle at the jack support
points. #
Take thera tchet ring spanner out of the tyre-
ch ange tool kit and place it on the he xagon
nut of the jack so that the letters "AUF" are
visible. #
Position support 2of jack 4on jack sup-
port point 1. #
Turn ratchet ring spanner 3clockwise until
jack support 2sits comple tely on jack sup-
port point 1and the base of the jack lies
ev enly on thegr ound. 472
472
Wheels and tyres

#
Continue toturn ratchet ring spanner 3until
th e tyre is raised a maximum of 3 cm o. the
gr ound. #
Loosen and remo vethe wheel (/ page 473). R
R
emo
emo ving a wheel
ving a wheel R
R
eq
eq uir
uir ements:
ements:
R The vehicle is raised.
When changing a wheel, avoid applying any force
to the brake discs, as this could impair the le vel of
comfort when braking.
* NO
NOTE
TEDamage tothre ading from dirt on
wheel bolts #
Do not place wheel bolts in sand or on a
dirty sur face. #
Unscr ewthe uppermost wheel bolt com-
ple tely. #
Screw cent ring pin 1into theth re ad ins tead
of the wheel bolt. #
Unscr ewthere maining wheel bolts com-
ple tely. #
Remo vethe wheel. F F
itting a ne
itting a ne w wheel
w wheel R
R
eq
eq uir
uir ements:
ements:
R The wheel tobe changed is remo ved and the
cent ring pin is scre wed in (/ page 473). &
W
WARNING
ARNING Risk of accident from losing a
wheel
Oiled or greased wheel bolts can cause the
wheel bolts tocome loose, as too can dam-
aged wheel bolts or wheel hub thre ads. #
Never oil or grease theth re ads. #
Intheev ent of damage totheth re ads,
contact a quali/ed 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
(/ page 465).
Fo r tyres with a speci/ed direction of rotation, an
ar ro w on the side wall of the tyre indicates the
cor rect direction of rotation. Obser vethe direc-
tion of rotation when /tting. #
Slide the wheel tobe mounted onto the cen-
tring pin and push it on. Wheels and tyres
473
473

&
W
WARNI NG
ARNI NGRisk 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 thegr ound. #
Be sure toobser vethe inst ructions and saf ety
no tes on "Changing a wheel" (/ page 465).#
For saf etyre asons, only use wheel bolts which
ha ve been appr oved byMercedes-Benz and
fo rth e wheel in question. #
Tighten the wheel bolts evenly in a diagonal
pattern in the order indicated until they are
/nger-tight. #
Unscr ewand remo vethe centring pin. #
Tighten the last wheel bolt until it is /nge r-
tight. #
Lowe rth eve hicle (/ page 474). Low Low
er
ering t
ing t he v
he vehicle
ehicle aTer
aTera wheel c
a wheel c hange
hange R
R
eq
eq uir
uir ements:
ements:
R The new wheel has been /tted (/ page 473).
* NO
NOTE
TERisk of vehicle jack becoming trap-
ped bythe AIRMATIC system If
th e AIRMATIC system has released air when
ra ising theve hicle, the jack can become trap-
ped when theve hicle is lo wered. #
Start the engine. This adapts theve hicle
le ve l. #
Remo vethe jack from under theve hicle. #
T
To low
o low er t
er the v
he v ehicle:
ehicle: placethera tchet onto
th e he xagon nut of the jack so that the letters
"AB" are visible and turn anti-clockwise. #
Tighten the wheel bolts evenly in a diagonal
pattern in the order indicated 1to5 with
an initial maximum forc e of 80 Nm. #
Tighten the wheel bolts evenly in a diagonal
pattern in the order indicated 1to5 with
th e speci/ed tightening torque of 150 Nm. &
W
WARNING
ARNING Risk of accident due toincor-
re ct tightening torque
The wheels could come loose if the wheel
bolts or wheel nuts are not tightened tothe
prescribed torque. 474
474
Wheels
and tyres

#
Ensure that the wheel bolts or wheel
nuts are tightened tothe prescribed
tightening torque. #
Ifyo u are not sure, do not mo vetheve hi-
cle. Con tact a quali/ed specialist work-
shop and ha vethe tightening torque
ch ecked immediatel y. #
Check the tyre pressure of the ne wly/tted
wheel and adjust it if necessar y.
% The following does not apply if the new wheel
is an emer gency spa rewheel. #
V
Vehicles wit
ehicles wit h a tyr
h a tyre pr
e pressur
essur e monit
e monit or
oring sy
ing sy s-
s-
t
t em:
em: restart the tyre pressure monitoring sys-
te m (/ page 465). Emerg
Emerg
ency spar
ency spar e wheel
e wheel N
No
ot
tes on t
es on t he emerg
he emerg ency spar
ency spar e wheel
e wheel &
W
WARNING
ARNING Risk of accident caused by
incor rect wheel and tyre dimensions
The wheel or tyre size and the tyre type of the
emer gency spa rewheel or spare wheel and
th e wheel tobe replaced may di.er. The emer-
ge ncy spa rewheel or spare wheel can signi/-
cantly impair driving characteristics of the
ve hicle.
To prev ent hazardous situations: #
Drive carefull y. #
Never /t more than one emer gency
spa rewheel or spare wheel that di.ers
in size. #
Only use an emer gency spa rewheel or
spare wheel brie0y. #
Do not deacti vate ESP ®
. #
Have the emer gency spa rewheel or
spare wheel of a di.erent size replaced
at the nearest quali/ed specialist work- shop. The new wheel must ha
vethe cor-
re ct dimensions. %
The emer gency spa rewheel is secured in the
emer gency spa rewheel bag in the boot.
Obser vethefo llowing no tes on /tting an emer-
ge ncy spa rewheel:
R The maximum permissible speed with an
emer gency spa rewheel /tted is 80 km/h.
R Do not /t the emer gency spa rewheel with
snow chains.
R Replace the emer gency spa rewheel aTer six
ye ars at the latest, rega rdless of wear.
R Use the wheel bolts that are included with the
emer gency spa rewheel.
Speci/ed Speci/ed tight
tightening t
ening t orq
orque:
ue: 130 Nm
R Check the tyre pressure of the emer gency
spa rewheel /tted. Cor rect the pressure as
necessar y.
% The speci/ed tyre pressure is stated on the
label of the emer gency spa rewheel. Wheels and tyres
475
475

%
V
Vehicles wit
ehicles wit h a tyr
h a tyre pr
e pressur
essur e monit
e monit or
oring sy
ing sy s-
s-
t
t em:
em: if an emer gency spa rewheel is /tted, the
tyre pressure monitoring system cannot func-
tion reliabl y.Fo r a few minutes aTer an emer-
ge ncy spa rewheel is /tted, the system may
still display the tyre pressure of there mo ved
wheel. Only restart the system again when the
emer gency spa rewheel has been replaced
with a new wheel.
Be sure toalso obser vethefo llowing fur ther rela-
te d subjects:
R Notes on tyre pressure (/ page 462)
R Tyre pressure table (/ page 463)
R Notes on /tting tyres (/ page 465)
R Fitting an emer gency spa rewheel
(/ page 470) 476 476
Wheels and tyres

N
N
o
ot
tes on t
es on t ec
echnical data
hnical data
The tech nical data was de term ined in accordance
with EU Directives. The data stated only applies to
ve hicles with standard equipment. You can obtain
fur ther information from a Mercedes-Benz Service
Centre.
Onl Onl y f
y for cert
or cert ain countr
ain countr ies:
ies:you can /n dvehicle-
speci/c vehicle data in theCO C documents (CER-
TIFIC ATE OF CONFORMITY). These documents
are deli vered with your vehicle. On-boar
On-boar
d electr
d electronics
onics N
No
ot
tes on t
es on t am
amper
per ing wit
ing wit h t
h the engine electr
he engine electr onics
onics *
N
NOOTE
TE Prematu rewe arthro ugh improper
maintenance Improper maintenance may cause
vehicle
components towe ar more quickly and the
ve hicle's operating permit may be in validated. #
Always ha veworkon the engine elec-
tronics and related components car ried
out at a quali/ed specialist workshop. *
N
NOOTE
TE Increased wear and tear or damage
caused bymeasures under take nto
increase per form ance Engine management measures under
take nto
increase per form ance can lead toincreased
we ar and tear or damage tothe drive system. #
Do not under take engine management
measures toincrease per form ance. T
T
w
w o-wa
o-wa y r
y radios
adios N
No
ot
tes on
es on /tting
/tting tw
two-wa
o-wa y r
y radios
adios &
W
WARNING
ARNING Risk of accident due to
improper workon two-w ayradios
If two-w ayradios are manipulated or retro/t-
ted incor rectl y,the electromagnetic radiation
from the two-w ayradios can inter fere with the
ve hicle elect ronics and jeopardise the operat-
ing saf ety of theve hicle. #
You should ha veall workon electrical
and electronic components car ried out
at a quali/ed specialist workshop. &
W
WARNING
ARNING Risk of accident from inco rrect
operation of two-w ayradios
If yo u use two-w ayradios in theve hicle
improper ly,th eir electromagnetic radiation
can disrupt theve hicle's elect ronics. This is
true in thefo llowing situations, in particular:
R The two-w ayradio is not connected toan
ex terior aerial.
R The exterior aerial is /tted incor rectly or is
not a lo w-re0ection aerial.
This could jeopardise the operating saf ety of
th eve hicle. #
Have the lo w-re0ection exterior aerial /t-
ted at a quali/ed specialist workshop. #
When operating two-w ayradios in the
ve hicle, alw ays connect them tothe lo w-
re 0ection exterior aerial. Te
ch nical data
477
477