MERCEDES-BENZ A-CLASS SALOON 2022 Owners Manual

The tool bag contains:
=
Jac
k
= Gloves
= Wheel wrench
= Centring pin
= Folding chock
= Ratchet for jack Preparing the vehicle for a wheel change
Requirements:
= The v

ehicle is not on a slope. =
The v
ehicle 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. 
Vehicles with manual transmission: eng
age
Nrst or reverse gear. 
Vehicles with automatic transmission: shis t
o
position j. 
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 378). 
Raise the vehicle ( pag
e 379). Removing and Ntting
t
he wheel trim/hub caps Requirements:
= The v

ehicle is prepared for a wheel change
(  page 378).
Wheel trim
The wheel trim covers the wheel bolts on vehicles
with steel wheels. Before unscrewing the wheel
bolts, remove the wheel trim. 
To remove: using bo
th hands, carefully reach
into two wheel trim openings and remove the
wheel trim. 378
Wheels and tyres

Plastic hub cap

To remove: tur n the centre cover of the hub
cap anti-clockwise and remove the hub cap. 
To Nt: mak
e sure that the centre cover of the
hub cap is turned 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: position soc
ket 2 from 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: f
ollow 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 378).
= The wheel trims and hub caps have been
removed (  page 378).
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 jack 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 jac
k 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. Wheels and tyres
379

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. 
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. 380
Wheels and tyres


Position support 2 of jac k 4 on jack sup-
port point 1.
% If there is a total loss of pressure in a tyre, it
ma

y be possible that the jack cannot be posi-
tioned at jack support point 1. In this case,
unload the vehicle. 
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 381). Removing a wheel
Requirements:
= The v

ehicle is raised ( page 379).
* 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 disks, as this could impair the level of
comfort when braking. *
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 and, if necessary, store it in
t
he boot. Wheels and tyres
381


Notes on removing an emergency spare wheel
( pag
e 383). Fitting a new wheel
Requirements:
= The wheel t

o be changed is removed and the
centring pin is screwed in (  page 381).
* 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 373).
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. 
Slide the wheel to be mounted onto the cen-
tr
ing pin and push it on. 
Observe the notes on Ntting an emer
gency
spare wheel ( page 383). &
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. 
Observe the instructions and safety notes on
"Changing a wheel"

( page 373). 
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 382). Lowering the vehicle
aser a wheel c
hange Requirements:
= The ne

w wheel has been Ntted ( page 382). 
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. 382
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 130 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 373). 
Vehicles with a tyre pressure monitoring sys-
t
em: restart the tyre pressure monitoring sys-
tem ( page 372). 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
383

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 removing an emer-
g
ency spare wheel:
= Before stowing the emergency spare wheel,
make sure there is no air les in the tyre.
If necessary, allow the air to escape.
= To release air from the tyre: remove the valve
cap of the tyre.
= Press down the metal insert in the valve using
a pointed object, e.g. a pen.
= Screw the valve cap onto the valve.
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. =
R
eplace 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
again 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 369)
= Tyre pressure table ( page 370)
= Notes on Ntting tyres ( page 373)
= Fitting an emergency spare wheel
( page 378) *nOating
t
he emergency spare wheel *
NOTE Ov
erheating due to the tyre inOation
compressor running too long 
Do not run the tyre inOation com
pressor
for longer than ten minutes without inter-
ruption. Requirements:
= The emer

gency spare wheel has been Ntted
correctly. ( page 378)
% Comply with the manufacturer's safety notes
on t
he sticker of the emergency spare wheel
and on the tyre inOation compressor. 384
Wheels and tyres


Remove the sticker with the label 80 km/h
fr
om the tyre inOation compressor housing
and aPx it to the instrument cluster within the
driver's Neld of vision. 
Remove the tyre inOation com
pressor from the
stowage well under the boot Ooor
( page 349, 348). 
Pull Nller hose 1 and plug 3 out of t
he tyre
inOation compressor housing. 
Insert plug 7 of Nller hose 1 in t
he socket
on the tyre inOation compressor and then turn
it until plug 7 engages. 
Unscrew the cap from the valve on the emer-
g
ency spare wheel. 
Screw union nut 2 of Nller hose 1 ont
o the
valve. 
Make sure on and oM switc
h 4 of the tyre
inOation compressor is set to 0. 
Insert plug 3 in a soc
ket in your vehicle.
= Cig
arette lighter socket
= 12 V socket (  page 126)
= Observe the notes on the cigarette lighter in
the Digital Owner's Manual
= Observe the notes on sockets ( page 126). 
Press the start/stop button once to switch on
t
he power supply (  page 160). 
Press On/OM switc
h 4 on the tyre inOation
compressor to I.
The tyre inOation compressor is switched on.
The tyre is inOated. The tyre pressure is shown
on manometer 5. 
Pump the tyre to the speciNed tyr
e pressure.%
The speciNed tyr
e pressure is stated on the
label of the emergency spare wheel. 
When the speciNed tyr
e pressure has been
reached, press on and oM switch 4 on the
tyre inOation compressor to 0.
The tyre inOation compressor is switched oM. 
Press the start/stop button to switch oM t
he
power supply. 
If the tyre pressure is higher than the speciNed
pr
essure, press pressure release valve button
6 until the correct tyre pressure has been
reached. 
Unscrew union nut 2 of Nller hose 1 fr
om
the valve. 
Screw the valve cap of the emergency spare
wheel ont

o the valve again. 
Stow Nller hose 1 and plug 3 in t
he lower
section of the tyre inOation compressor hous-
ing. 
Stow the tyre inOation com
pressor in the vehi-
cle. Wheels and tyres
385

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
Notes on Ntting
tw
o-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. 386
Technical data

*
NOTE Invalidation of the operating permit
due to failure to comply with the instruc-
tions for installation and use The operating permit may be invalidated if the
ins
tructions for installation and use of two-way
radios are not observed. 
Only use approved frequency bands. 
Observe the maximum permissible out-
put po
wer in these frequency bands. 
Only use approved aerial positions. 1
Front roof area
2 Rear roof area
3 Rear wings
4 boot lid
On vehicles with a panoramic sliding sunroof, Nt-
ting an aer

ial to the front or rear roof area is not
permitted. On the rear wings, it is recommended that you
Nt
t
he aerial on the side of the vehicle closest to the
centre of the road.
Use Technical SpeciNcation ISO/TS 21609 (Road
Vehicles !