MERCEDES-BENZ CLS COUPE 2022 Owners Manual

=
F urthermore, the use of certain tyre types in
certain regions and areas of operation can be
highly beneNcial.
= Only use tyres and wheels of the same type
(summer tyres, winter tyres, MOExtended
tyres) and the same make.
= Only Nt wheels of the same size on one axle
(les and right).
It is only permissible to Nt a diMerent wheel
size in the event of a Oat tyre in order to drive
to the specialist workshop.
= Do not make any modiNcations to the brake
system, the wheels or the tyres.
The use of shims or brake dust shields is not
permitted and may invalidate the vehicle's
general operating permit.
= Vehicles with a tyre pressure monitoring sys-
tem: all Ntted wheels must be equipped with
functioning sensors for the tyre pressure mon-
itoring system.
= At temperatures below 7 °C use winter tyres
or all-season tyres marked M M+S for all
wheels. Winter tyres provide the best possible grip in
wintr
y road conditions.
= For M+S tyres, only use tyres with the same
tread.
= Observe the maximum permissible speed for
the M+S tyres Ntted.
If the tyre's maximum speed is below that of
the vehicle, this must be indicated by an
appropriate label in the driver's Neld of vision.
= Run in new tyres at moderate speeds for the
Nrst 100 km.
= Replace the tyres aser six years at the latest,
regardless of wear.
= When replacing with tyres that do not feature
run-Oat characteristics: vehicles with
MOExtended tyres are not equipped with a
TIREFIT kit at the factory. Equip the vehicle
with a TIREFIT kit aser replacing with tyres
that do not feature run-Oat characteristics,
e.g. winter tyres.
% You can permanently limit the maximum
speed f

or driving with winter tyres
(  page 193). For more information on wheels and tyres, con-
t
act a qualiNed specialist workshop.
Be sure to also observe the following further rela-
ted subjects: = Notes on tyre pressure (  page 341)
= Tyre pressure table ( page 342)
= Notes on the emergency spare wheel
( page 355) Notes on interchanging wheels
&
WARNING Risk of injur
y through diMerent
wheel sizes
Interchanging the front and rear wheels can
se
verely impair the driving characteristics.
The disk brakes or wheel suspension compo-
nents may also be damaged. 
Only interchange the front and rear
wheels if t
he wheels and tyres have the
same dimensions. 348
Wheels and tyres

Interchanging the front and rear wheels if the
wheels or tyr
es have diMerent dimensions can
render the general operating permit invalid.
Observe the instructions and safety notes on
"Changing a wheel" ( page 345)
The wear patterns on the front and rear wheels
diMer:
= front wheels wear more on the tyre shoulder
= rear wheels wear more in the centre of the
tyre
Do not drive with tyres that have too little tread
depth. This signiNcantly reduces traction on wet
roads (aquaplaning).
On vehicles with the same front and rear wheel
size, you can interchange the wheels every
5,000 to 10,000 km, depending on the wear.
Ensure the direction of rotation is maintained for
the wheels. Notes on storing wheels
When storing wheels, observe the following notes:
= Aser r

emoving wheels, store them in a cool,
dry and preferably dark place.
= Protect the tyres from contact with oil, grease
or fuel. Overview of the tyre-change tool kit
*
NOTE Mer
cedes-AMG vehicles 
Observe the notes in the Supplement.
Y
ou could otherwise fail to recognise
dangers. Apart from some
countr
y-speciNc variants, vehi-
cles are not equipped with a tyre-change tool kit.
Consult a qualiNed specialist workshop to Nnd out
which wheel change tools are necessary and
approved for changing the wheel on your vehicle.
You require the following tools, forexample, to
change a wheel:
= Jack
= Chock =
Wheel wr
ench
= Centring pin
% The jack weighs approximately 3.4 kg.
The maximum load capacity of t
he jack can
be found on the sticker aPxed to the jack.
The jack is maintenance-free. If there is a
malfunction, please contact a qualiNed spe-
cialist workshop.
The tyre-change tool kit is located under the boot
Ooor
.
% Depending on the model, the tyre change tool
kit ma

y be located at other positions under
the boot Ooor. Wheels and tyres
349

1
Jack
2 Wheel wrench
3 Centring pin
4 Folding chock
5 Ratchet for jack Preparing the vehicle for a wheel change
Requirements
=
The v
ehicle is not on a slope.
= The vehicle is on solid, non-slippery and level
ground.
= The required tyre-change tool kit is available. %
If your vehicle is not equipped with the tyre-
c

hange tool kit, consult a qualiNed specialist
workshop to Nnd out about suitable tools. 
Apply the electric parking brake manually. 
Move the front wheels to the straight-ahead
position. 
Shis t
he transmission to position j. 
Vehicles with level control system: se
t the nor-
mal vehicle level ( page 219). 
Switch oM t
he vehicle. 
Make sure that the vehicle cannot be started. 
Place chocks or other suitable items under the
fr
ont and rear of the wheel that is diagonally
opposite the wheel you wish to change. 
If necessary, remove the wheel trim/hub caps
( pag

e 350). 
Raise the vehicle ( pag
e 351). Removing and Ntting
t
he wheel trim/hub caps Requirements
=
The v

ehicle is prepared for a wheel change
( page 350). Plastic hub cap
T

o remove: 
Turn the centre cover of the hub cap anti-
cloc

kwise and remove the hub cap.
To Nt: 
Make sure that the centre cover of the hub
cap is tur

ned anti-clockwise. 
Position the hub cap and turn the centre cover
cloc

kwise until the hub cap engages physically
and audibly.
Aluminium hub cap To remove:350
Wheels and tyres


Position socket 2 fr om the tyre-change tool
kit on hub cap 1. 
Position wheel spanner 3 on soc
ket 2. 
Using wheel spanner 3, tur
n hub cap 1
anti-clockwise and remove it.
To Nt: 
Follow the instructions above in reverse order.
% SpeciNed tight
ening torque: 25 Nm. Raising the vehicle when changing a wheel
Requirements:
= Ther

e are no persons in the vehicle.
= The vehicle has been prepared for a wheel
change (  page 350).
= The wheel trims and hub caps have been
removed (  page 350).
Important notes on using the jack: = Use only a vehicle-speciNc jack that has been
approved by Mercedes-Benz to raise the vehi-
cle. =
The jac
k is only designed for raising and hold-
ing the vehicle for a short time while a wheel
is being changed and not for maintenance
work under the vehicle.
= The jack must be placed on a Nrm, Oat and
non-slip surface. If necessary, use a large, Oat,
load-bearing, non-slip underlay.
= The foot of the jack must be positioned verti-
cally under the jack support point. Rules of conduct when the vehicle is raised:
= N

ever place your hands or feet under the vehi-
cle.
= Never lie under the vehicle.
= Do not start the vehicle and do not release the
electric parking brake.
= Do not open or close any doors or the boot
lid. Wheels and tyres
351


Using the wheel wrench, loosen the wheel
bolts on t
he wheel you wish to change by
about one full turn. Do not unscrew the
screws completely. Position of the jack support points
* NOTE Mer
cedes-AMG vehicles 
Observe the notes in the Supplement.
Y
ou could otherwise fail to recognise
dangers. &
WARNING Risk of injur
y from incorrect
positioning of the jack
If you do not position the jack correctly at the
appr
opriate jacking point of the vehicle, the
jack could tip with the vehicle raised. 
Only position the jack at the appropriate
jac

king point of the vehicle. The base of the jack must be positioned vertically
under t

he jacking point of the vehicle. *
NOTE Damag
e to the vehicle due to the
jack If you do not position the jack at the jack sup-
por
t points provided for this purpose, you
could damage your vehicle. 
Only position the jack at the jack sup-
por

t points provided for this purpose. 
Take the ratchet out of the tyre-change tool kit
and place it on t

he hexagon nut of the jack so
that the letters "AUF" are visible. 352
Wheels and tyres


Position support 2 of jac k 4 on jack sup-
port point 1. 
Turn ratchet 3 cloc
kwise until support 2
sits completely on jack support point 1 and
the base of the jack lies evenly on the ground. 
Turn ratchet 3 until t
he tyre is raised a maxi-
mum of 3 cm from the ground. 
Loosen and remove the wheel (  pag
e 353). Removing a wheel
Requirements:
= The v

ehicle is raised ( page 351).
* NOTE Mer
cedes-AMG vehicles 
Observe the notes in the Supplement.
Y
ou could otherwise fail to recognise
dangers. When changing a wheel, avoid applying any force
t

o the brake discs, as this could impair the level of
comfort when braking.
* NOTE Damag
e to the wheels' plastic ele-
ments when changing a wheel Plastic elements on wheels may be damaged
when r
emoving and repositioning the wheel. 
Do not raise the wheels by the plastic
elements when r

emoving and reposition-
ing. *
NOTE Damag
e to threading from dirt on
wheel bolts 
Do not place wheel bolts in sand or on a
dir

ty surface. 
Unscrew the uppermost wheel bolt com-
ple

tely. 
Screw centring pin 1 int
o the thread instead
of the wheel bolt. 
Unscrew the remaining wheel bolts com-
ple

tely. 
Remove the wheel. Wheels and tyres
353

Fitting a new wheel
Requirements
=
The wheel t
o be changed is removed and the
centring pin is screwed in ( page 353).
* NOTE Mer
cedes-AMG vehicles 
Observe the notes in the Supplement.
Y
ou could otherwise fail to recognise
dangers. &
WARNING Risk of accident fr
om losing a
wheel
Oiled or greased wheel bolts can cause the
wheel bolts t
o come loose, as too can dam-
aged wheel bolts or wheel hub threads. 
Never oil or grease the threads. 
In the event of damage to the threads,
cont

act a qualiNed specialist workshop
immediately. 
Have the damaged wheel bolts or dam-
ag

ed hub threads replaced. 
Do not continue driving. 
Observe the information on the choice of tyres
( pag

e 345).
For tyres with a speciNed dir
ection of rotation, an
arrow on the side wall of the tyre indicates the
correct direction of rotation. Observe the direc-
tion of rotation when Ntting.
* NOTE Damag
e to the wheels' plastic ele-
ments when changing a wheel Plastic elements on wheels may be damaged
when r
emoving and repositioning the wheel. 
Do not raise the wheels by the plastic
elements when r

emoving and reposition-
ing. 
Slide the wheel to be mounted onto the cen-
tr
ing pin and push it on. &
WARNING Risk of injur
y from tightening
wheel bolts and nuts
If you tighten the wheel bolts or wheel nuts
when t
he vehicle is raised, the jack could tip. 
Only tighten wheel bolts or wheel nuts
when t

he vehicle is on the ground. 
Be sure to observe the instructions and safety
no

tes on "Changing a wheel" (  page 345). 
For safety reasons, only use wheel bolts which
ha

ve been approved by Mercedes-Benz and
for the wheel in question. 
Tighten the wheel bolts evenly in a diagonal
patt
ern in the order indicated until they are
Nnger-tight. 
Unscrew and remove the centring pin. 
Tighten the last wheel bolt until it is Nng
er-
tight. 
Lower the vehicle ( pag
e 354). Lowering the vehicle
aser a wheel c
hange Requirements
=
The ne

w wheel has been Ntted ( page 354). 
To lower the vehicle: place t
he ratchet onto
the hexagon nut of the jack so that the letters
"AB" are visible and turn anti-clockwise. 354
Wheels and tyres


Tighten the wheel bolts evenly in a diagonal
patt ern in the order indicated 1 to 5 with
an initial maximum force of 80 Nm. 
Tighten the wheel bolts evenly in a diagonal
patt
ern in the order indicated 1 to 5 with
the speciNed tightening torque of 150 Nm. &
WARNING Risk of accident due t
o incor-
rect tightening torque
The wheels could come loose if the wheel
bolts or wheel nuts ar
e not tightened to the
prescribed torque. 
Ensure that the wheel bolts or wheel
nuts ar
e tightened to the prescribed
tightening torque. 
If you are not sure, do not move the vehi-
cle. Cont

act a qualiNed specialist work-
shop and have the tightening torque
checked immediately. 
Check the tyre pressure of the newly Ntt
ed
wheel and adjust it if necessary.
% The following does not apply if the new wheel
is an emer
gency spare wheel. 
Vehicles with a tyre pressure loss warning sys-
t
em: restart the tyre pressure loss warning
system (  page 345). 
Vehicles with a tyre pressure monitoring sys-
t
em: restart the tyre pressure monitoring sys-
tem ( page 344). Emergency spare wheel
Notes on the emergency spare wheel
&
WARNING Risk of accident caused b
y
incorrect wheel and tyre dimensions
The wheel or tyre size and the tyre type of the
emer
gency spare wheel or spare wheel and
the wheel to be replaced may diMer. The emer-
gency spare wheel or spare wheel can signiN-
cantly impair driving characteristics of the
vehicle.
To prevent hazardous situations: 
Drive carefully. 
Never Nt mor
e than one emergency
spare wheel or spare wheel that diMers
in size. 
Only use an emergency spare wheel or
spar
e wheel brieOy. 
Do not deactivate ESP n
. 
Have the emergency spare wheel or
spar

e wheel of a diMerent size replaced
at the nearest qualiNed specialist work- Wheels and tyres
355

shop. The new wheel must have the cor-
r
ect dimensions. %
The emergency spare wheel is secured in the
emer
gency spare wheel bag in the boot.
Observe the following notes on Ntting an emer
-
gency spare wheel:
= The maximum permissible speed with an
emergency spare wheel Ntted is 80 km/h.
= Do not Nt the emergency spare wheel with
snow chains.
= Replace the emergency spare wheel aser six
years at the latest, regardless of wear.
= Use the wheel bolts that are included with the
emergency spare wheel.
= Check the tyre pressure of the emergency
spare wheel Ntted. Correct the pressure as
necessary.
% The speciNed tyr
e pressure is stated on the
label of the emergency spare wheel.
% Vehicles with a tyre pressure loss warning
sy
stem: if an emergency spare wheel is Ntted,
the tyre pressure loss warning system cannot function reliably. Only restart the system
ag

ain when the emergency spare wheel has
been replaced with a new wheel.
Vehicles with a tyre pressure monitoring sys-
tem: if an emergency spare wheel is Ntted, the
tyre pressure monitoring system cannot func-
tion reliably. For a few minutes aser an emer-
gency spare wheel is Ntted, the system may
still display the tyre pressure of the removed
wheel. Only restart the system again when the
emergency spare wheel has been replaced
with a new wheel.
Be sure to also observe the following further rela-
t
ed subjects:
= Notes on tyre pressure (  page 341)
= Tyre pressure table ( page 342)
= Notes on Ntting tyres ( page 345)
= Fitting an emergency spare wheel
( page 350) 356
Wheels and tyres

Notes on technical data
* NOTE Mercedes-AMG vehicles 
Observe the notes in the Supplement.
Y
ou could otherwise fail to recognise
dangers. The technical data was determined in accordance
wit

h EU Directives. The data stated only applies to
vehicles with standard equipment. You can obtain
further information from a Mercedes-Benz Service
Centre.
Only for certain countries: you can Nnd vehicle-
speciNc vehicle data in the COC documents (CER-
TIFICATE OF CONFORMITY). These documents
are supplied when the vehicle is delivered. On-board electronics
Notes on tampering with the engine electronics
*
NOTE Pr
emature wear through improper
maintenance Improper maintenance may cause vehicle
com

ponents to wear more quickly and the
vehicle's operating permit may be invalidated. 
Always have work on the engine elec-
tr

onics and related components carried
out at a qualiNed specialist workshop. Two-way radios

qN
otes on Ntting
two-way radios &
WARNING Risk of accident due t
o
improper work on two-way radios
If two-way radios are manipulated or r
etroNt-
ted incorrectly, the electromagnetic radiation
from the two-way radios can interfere with the
vehicle electronics and jeopardise the operat-
ing safety of the vehicle. 
You should have all work on electrical
and electr

onic components carried out
at a qualiNed specialist workshop. &
WARNING Risk of accident due t
o
improper operation of two-way radios
If you use two-way radios in the vehicle
im
properly, their electromagnetic radiation
can disrupt the vehicle's electronics. This is
the case in the following situations, in particu-
lar:
= The two-way radio is not connected to an
exterior aerial.
= The exterior aerial is Ntted incorrectly or is
not a low-reOection aerial.
This could jeopardise the operating safety of
the vehicle. 
Have the lo
w-reOection exterior aerial Nt-
ted at a qualiNed specialist workshop. 
When operating two-way radios in the
v

ehicle, always connect them to the low-
reOection exterior aerial. Technical data
357