2022 MERCEDES-BENZ A-CLASS SALOON Owners Manual

You can use TIREFIT tyre sealant to seal perfora-
tion damag e of up to 4 mm, particularly those in
the tyre contact surface. You can use TIREFIT in
outside temperatures down to -20 °C. &
WARNING Risk of accident when using
tyr
e sealant
The tyre sealant may be unable to seal the
tyr
e properly, especially in the following cases:
= there are large cuts or punctures in the
tyre (larger than damage previously men-
tioned)
= the wheel rims have been damaged
= aser journeys with very low tyre pressure
or with Oat tyres 
Do not continue driving. 
Consult a q
ualiNed specialist workshop.&
WARNING Risk of injur
y and poisoning
from tyre sealant
Tyre sealant is hazardous to health and causes
ir
ritation. Do not allow it to come into contact with your skin, eyes or clothing, and do not
sw

allow it. Do not inhale any vapours. Keep
the tyre sealant away from children.
Observe the following if you come into contact
with the tyre sealant: 
Rinse oM t
he tyre sealant from your skin
using water immediately. 
If tyre sealant gets into your eyes, thor-
oughl

y rinse them using clean water
immediately. 
If tyre sealant has been swallowed, thor-
oughl
y rinse out your mouth immediately
and drink plenty of water. Do not induce
vomiting and seek medical attention
immediately. 
Change out of clothing which has come
int

o contact with tyre sealant immedi-
ately. 
If an allergic reaction occurs, seek medi-
cal att

ention immediately. *
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. Comply with the manufacturer's safety notes on
t

he sticker on the tyre sealant bottle.
Have the tyre sealant bottle replaced in a qualiNed
specialist workshop every Nve years. 
Do not remove any foreign objects which have
ent

ered the tyre. 350
Breakdown assistance


Remove sticker 1 fr om the tyre inOation
compressor housing and aPx it to the instru-
ment cluster within the driver's Neld of vision. 
Remove sticker 2 fr
om the tyre sealant bot-
tle and aPx it near the valve on the wheel with
the defective tyre. 
Pull plug 7 wit
h the cable and Nller hose 3
out of the tyre inOation compressor housing. 
Insert tyre sealant bottle 9 in soc
ket 6 of
the tyre inOation compressor in such a way
that the red arrow on tyre sealant bottle 9
matches the red arrow on the tyre inOation
compressor. 
Turn tyre sealant bottle 9 a q
uarter turn
clockwise. 
Insert the plug of Nller hose 3 in soc
ket 5
of tyre sealant bottle 9. 
Turn Nller hose 3 a q
uarter turn clockwise. 
Remove the valve cap from valve A
on the
faulty tyre. 
Screw union nut 4 of Nller hose 3 ont
o
valve A. 
Insert plug 7 int
o a 12!


Press on and oM switc h 8 on the tyre inOa-
tion compressor.
The tyre inOation compressor is switched on.
The tyre is inOated. First, tyre sealant is pum-
ped into the tyre. The pressure may brieOy rise
to approximately 500 kPa (5 bar/73 psi).
Do not switch oM t
he tyre inOation compressor
during this phase! 
Let the tyre inOation com
pressor run for a
maximum of ten minutes.
The tyre should then have attained a tyre pres-
sure of at least 200 kPa (2.0 bar/29 psi).
If tyre sealant leaks out, make sure you clean the
aMect
ed area as quickly as possible. It is prefera-
ble to use clean water.
If you get tyre sealant on your clothing, have it
cleaned as soon as possible with perchloroethy-
lene.
If, aser ten minutes, a tyre pressure of 200 kPa
(2.0 bar/29 psi) has not been attained: 
Switch oM t
he tyre inOation compressor. 
Unscrew the Nlling hose fr
om the valve of the
defective tyre.
Please note that tyre sealant may leak out when
unscr
ewing the Nlling hose. 
Drive forwards or in reverse very slowly for
appr
oximately 10 m. 
Pump up the tyre again.
Aser a maximum of t

en minutes the tyre pres-
sure must be at least 200 kPa (2.0 bar/
29 psi). &
WARNING Risk of accident due t
o the
speciNed tyre pressure not being attained
If the speciNed tyr
e pressure is not attained
aser the speciNed time, the tyre is too badly
damaged. The tyre sealant cannot repair the
tyre in this instance.
The braking and driving characteristics may be
greatly impaired. 
Do not continue driving. 
Consult a q
ualiNed specialist workshop. *
NOTE S
taining from leaking tyre sealant Aser
use, e
xcess tyre sealant may leak out
from the Nlling hose. 
Therefore, place the Nlling hose in t
he
plastic bag that contained the TIREFIT
kit. If, aser
t
en minutes, a tyre pressure of 200 kPa
(2.0 bar/29 psi) has been attained: 
Switch oM t
he tyre inOation compressor. 
Unscrew the Nlling hose fr
om the valve of the
defective tyre.
Please note that tyre sealant may leak out when
unscr
ewing the Nlling hose. &
WARNING Risk of accident fr
om driving
with sealed tyres
A tyre temporarily sealed with tyre sealant
im
pairs the handling characteristics and is not
suitable for higher speeds. 352
Breakdown assistance


Adapt your driving style accordingly and
dr
ive carefully. 
Do not exceed the maximum speed limit
wit
h a tyre that has been repaired using
tyre sealant. 
Observe the maximum permissible speed of
80 km/h

for a tyre sealed with tyre sealant. 
The sticker with details of the maximum per-
missible speed mus
t be aPxed to the instru-
ment cluster where it can be easily seen by
the driver.
* NOTE S
taining from leaking tyre sealant Aser
use, e
xcess tyre sealant may leak out
from the Nlling hose. 
Therefore, place the Nlling hose in t
he
plastic bag that contained the TIREFIT
kit. +
ENVIRONMENTAL NOTE
En
vironmental
pollution caused by environmentally irre-
sponsible disposal Tyre sealant contains pollutants.

Have the tyre sealant bottle disposed of
pr
ofessionally, e.g. at a Mercedes-Benz
Service Centre. 
Stow the tyre sealant bottle, the tyre inOation
com
pressor and the warning triangle. 
Pull away immediately. 
Stop driving aser appr
oximately ten minutes
and check the tyre pressure using the tyre
inOation compressor.
The tyre pressure must now be at least
130 kPa (1.3 bar/19 psi). &
WARNING Risk of accident due t
o the
speciNed tyre pressure not being attained
If the speciNed tyr
e pressure is not reached,
the tyre is too badly damaged. The tyre seal-
ant cannot repair the tyre in this instance. The braking and driving characteristics may be
g

reatly impaired. 
Do not continue driving. 
Consult a q
ualiNed specialist workshop. Countries that have Mercedes-Benz Service24h:
y

ou will Nnd a sticker with the telephone number,
e.g. on the B!


Press pressure release button C ne xt to
manometer B.
When the tyre pressure is correct 
Unscrew the Nlling hose fr
om the valve of the
sealed tyre. 
Screw the valve cap onto the valve of the
sealed tyr
e. 
Stow the tyre sealant bottle and the tyre inOa-
tion com

pressor. 
Drive to the nearest q
ualiNed specialist work-
shop and have the tyre, tyre sealant bottle and
Nlling hose replaced there. Battery (vehicle)
Notes on the 12 V battery
&
WARNING Risk of e
xplosion due to elec-
trostatic charge
Electrostatic charge can ignite the highly
e
xplosive gas mixture in the battery. 
To discharge any electrostatic charge
t
hat may have built up, touch the metal
vehicle body before handling the battery. The highly
Oammable g
as mixture is created while
the battery is charging and during starting assis-
tance.
For safety reasons, Mercedes-Benz recommends
that you only use batteries which have been tes-
ted and approved for your vehicle by Mercedes-
Benz. &
WARNING Dang
er of chemical burns from
the battery acid
Battery acid is caustic. 
Avoid contact with the skin, eyes or
clo

thing. 
Do not lean over the battery. 
Do not inhale battery gases. 
Keep children away from the battery. 
Immediately rinse battery acid oM t
hor-
oughly with plenty of clean water and
seek medical attention immediately. +
ENVIRONMENTAL NOTE
En
vironmental
damage due to improper disposal of bat-
teries Batteries contain pollutants. It is
illeg

al to dispose of them with the household
rubbish. 
Dispose of batteries in an
en

vironmentally responsible manner. 354
Breakdown assistance

Take discharged batteries to a
q ualiNed
specialist workshop or to a collection
point for used batteries. If you have to disconnect the 12 V battery, con-
t
act a qualiNed specialist workshop.
Comply with safety notes and take protective
measures when handling batteries. Risk of explosion.
Fire, naked
Oames and smoking ar
e
prohibited when handling the battery.
Avoid creating sparks. Electrolyte or battery acid is corrosive.
A

void contact with the skin, eyes or
clothing. Wear suitable protective
clothing, in particular gloves, an apron
and a face mask. Immediately rinse
electrolyte or acid splashes oM with
clean water. Consult a doctor if neces-
sary. Wear safety glasses.
Keep children away.
Observe this Owner's Manual.
If you do not intend to use the vehicle over an
e
xtended period of time:
= activate standby mode, or
= connect the battery to a battery charger
approved by Mercedes-Benz, or
= consult a qualiNed specialist workshop to dis-
connect the battery Notes on starting assistance and charging the 12
V batt

ery When charging the battery and during starting
assis

tance, always use the jump-start connection
point in the engine compartment.
* NOTE Damag
e to the battery due to over-
voltage When charging using a battery charger without
a maximum c
harging voltage, the battery or
the on-board electronics may be damaged. 
Only use battery chargers with a maxi-
mum c

harging voltage of 14.8 V. &
WARNING Risk of e
xplosion due to the
ignition of hydrogen gas
If there is a short circuit or sparks are created,
t
here is a danger of hydrogen gas igniting
when you charge the battery. 
Make sure that the POSITIVE terminal of
a connect

ed battery does not come into
contact with vehicle parts. Breakdown assistance
355


Never place metal objects or tools on a
batt ery. 
When connecting and disconnecting the
batt
ery, always observe the sequence of
battery terminals described. 
During starting assistance, always take
car

e to connect only battery terminals of
identical polarity. 
During starting assistance, observe the
seq
uence described for connecting and
disconnecting the jump leads. 
Do not connect or disconnect the bat-
t

ery terminals with the engine running. &
WARNING Risk of e
xplosion due to explo-
sive mixture of gases
An explosive mixture of gases can escape
fr
om the battery during charging and starting
assistance. 
Fire, naked Oames, smoking and cr
eating
sparks must be avoided. 
Make sure there is adequate ventilation. 
Do not stand over the battery. &
WARNING Risk of e
xplosion from a frozen
battery
A discharged battery may freeze at tempera-
tur
es slightly above or below freezing point.
During starting assistance or battery charging,
battery gas can be released. 
Always allow a battery to thaw before
c
harging it or performing starting assis-
tance. If the indicator/warning lamps in the instrument
clus
ter do not light up at low temperatures, it is
very likely that the discharged battery has frozen.
In this case you may neither jump-start the vehi-
cle nor charge the battery.
The service life of a battery that has been thawed
may be dramatically shortened. The starting char-
acteristics may be impaired, especially at low
temperatures.
It is recommended that you have a thawed battery
checked at a qualiNed specialist workshop. *
NOTE Damag
e caused by numerous or
extended attempts to start the engine Numerous or extended attempts to start the
engine ma

y damage the catalytic converter
due to non-combusted fuel. 
Avoid numerous and extended attempts
t

o start the engine. Observe the following points during starting assis-
t
ance and when charging the battery:
= Only use undamaged jump lead/charging
cables with a suPcient cross-section and
insulated terminal clamps.
= Non-insulated parts of the terminal clamps
must not come into contact with other metal
parts while the jump lead/charging cable is
connected to the battery/jump-start connec-
tion point.
= The jump lead/charging cable must not come
into contact with any parts which may move
when the engine is running.
= Always make sure that neither you nor the bat-
tery is electrostatically charged. 356
Breakdown assistance

=
K eep away from Nre and naked Oames.
= Do not lean over the battery.
Observe the additional following points when
charging the battery:
= Only use battery chargers tested and
approved for Mercedes-Benz.
= Read the battery charger's operating instruc-
tions before charging the battery.
Observe the additional following points during
starting assistance:
= For starting assistance, only use batteries with
a nominal voltage of 12 V.
= The vehicles must not touch.
= Petrol engine: only accept starting assistance
if the engine and exhaust system are cold. Starting assistance and charging the 12 V battery
Requirements:
Plug-in h

ybrid: in order to start, the vehicle
requires a suPcient charge level of the high-volt- age battery as well as a
suPcient po
wer output of
the 12 V on-board electrical system.
= The vehicle is secured with the electric park-
ing brake.
= Automatic transmission: the transmission is in
position j.
= Manual transmission: the transmission is in
neutral.
= The vehicle and all electrical consumers are
switched oM.
= The bonnet is open. 
Slide cover 1 of positiv
e clamp 2 on the
jump-starting connection point in the direction
of the arrow. 
Connect positive clamp 2 on y
our vehicle to
the positive pole of the donor battery using
the jump lead/charging cable. Always begin
with positive clamp 2 on your own vehicle
Nrst. Breakdown assistance
357