MERCEDES-BENZ A-CLASS SALOON 2022 Owners Manual


During starting assistance: s tart the engine of
the donor vehicle and run at idle speed. 
Connect the negative pole of the donor bat-
t
ery and earth point 3 of your own vehicle by
using the jump lead/charging cable. Begin
with the donor battery Nrst.
During starting assistance: s
tart the engine of
your own vehicle. 
During the charging process: s
tart the charg-
ing process. 
During starting assistance: le
t the engines run
for several minutes. 
During starting assistance: bef
ore disconnect-
ing the jump lead, switch on an electrical con-
sumer on your own vehicle, e.g. the rear win-
dow heater or lighting.
When the starting assistance/charging process is
com
plete: 
First, remove the jump lead/charging cable
fr
om earth point 3 and the negative pole of
the donor battery, then from positive clamp
2 and the positive pole of the donor battery. Begin each time with the contacts on your
o
wn vehicle Nrst. 
Aser r
emoving the jump lead/charging cable,
close cover 1 of positive clamp 2.
Plug-in hybrid: if y
our vehicle has been started
with starting assistance, it may not be possible to
use the electric drive for approximately 30
minutes.
Further information can be obtained at a qualiNed
specialist workshop. Replacing the 12 V battery

Observe the notes on the 12 V battery
( pag
e 354).
Mercedes-Benz recommends that you have the
12 V batt
ery replaced at a qualiNed specialist
workshop, e.g. at a Mercedes-Benz Service
Centre. Observe the following notes if you want to replace
t

he battery yourself:
= Always replace a faulty battery with a battery
which meets the speciNc vehicle require-
ments.
The vehicle is equipped with a Oeece battery.
Full vehicle functionality is only guaranteed
with a Oeece battery. For safety reasons,
Mercedes-Benz recommends that you only
use batteries which have been tested and
approved for your vehicle by Mercedes-Benz.
= Use detachable parts such as vent hoses,
elbow Nttings or terminal covers from the bat-
tery which is to be replaced.
= Make sure that the vent hose is always con-
nected to the original opening on the side of
the battery.
Fit any existing or supplied cell caps.
Otherwise, gases or battery acid could
escape.
= Make sure that detachable parts are recon-
nected in the same way. 358
Breakdown assistance

Tow-starting or towing away
Overview of permissible towing methods (not
plug-in h
ybrid) Mercedes-Benz recommends transporting your
v
ehicle in the case of a breakdown, rather than
towing it away.
For towing, use a tow rope or tow bar with both
axles on the ground. Do not use tow bar systems. &
WARNING Risk of accident when t
owing
with steering wheel lock
If the steering wheel lock is engaged, you will
no
t be able to steer the vehicle. 
When towing with a tow rope or tow bar,
alw

ays switch on the vehicle. *
NOTE Damag
e to the vehicle due to tow-
ing away incorrectly 
Observe the instructions and notes on
t

owing away. Permitted towing methods
Vehicle equipment/towing method
Both axles on the ground Front axle raised Rear axle raised
Vehicles with manual transmission Yes, maximum 50 km at 50 km/h Yes, maximum 50 km at 50 km/h Yes, maximum 50 km at 50 km/h
Vehicles with automatic transmis-
sion Yes, maximum 50 km at 50 km/h Yes, maximum 50 km at 50 km/h Yes, maximum 50 km at 50 km/h
4MATIC vehicles Yes, maximum 50 km at 50 km/h No No Breakdown assistance
359

Towing with a raised axle:
t owing should be per-
formed by a towing company. Overview of permitted towing methods (plug-in
h

ybrid) Mercedes-Benz recommends transporting your
v
ehicle in the case of a breakdown, rather than
towing it away. For towing, use a tow rope or tow bar with both
axles on t

he ground. Do not use tow bar systems.
* NOTE Damag
e to the vehicle due to tow-
ing away incorrectly 
Observe the instructions and notes on
t

owing away. Observe the information on towing and transport-
ing t

he vehicle in the vehicle Owner's Manual.
Permitted towing methods Vehicle equipment/towing method
Both axles on the ground Front axle raised Rear axle raised
Plug-in hybrid vehicles Yes, maximum 50 km at 50 km/h Yes, maximum 50 km at 50 km/h Yes, maximum 50 km at 50 km/h
The s
teering wheel must be Nxed in
the centre position with a steering
wheel lock. 360
Breakdown assistance

In the following situations, only transporting the
v ehicle is permitted:
= the multifunction display is not working
or
= the


Information on the permissible gross mass of
t
he vehicle can be found on the vehicle identi-
Ncation plate ( page 389). 
Vehicles with automatic transmission: do no
t
open the driver's door or front passenger
door; the transmission otherwise automati-
cally shiss to position j. 
Fit the towing eye ( pag
e 364).
Fasten the towing device.
* NOTE Damag
e due to incorrect connec-
tion of the tow bar 
Only connect the tow rope or tow bar to
t
he towing eyes. 
Deactivate the automatic locking mechanism
( pag

e 89). 
Do not activate the HOLD function. 
Deactivate tow-away protection
( pag

e 103). 
Deactivate Active Brake Assist ( pag
e 242).
Vehicles with automatic transmission: shis t
o
position i. 
Vehicles with manual transmission: shis t
o
neutral. 
Release the electric parking brake. 
Switch on the vehicle; the steering wheel lock-
ing ma
y otherwise engage. &
WARNING Risk of accident due t
o limited
safety-related functions during the towing
process
Safety-related functions are limited or no lon-
g
er available in the following situations:
= the vehicle is switched oM.
= the brake system or power steering system
is malfunctioning.
= the energy supply or the on-board electri-
cal system is malfunctioning.
When your vehicle is towed away, signiNcantly
more eMort may be required to steer and
brake than is normally required. 
Use a tow bar. 
Make sure that the steering wheel can
mo

ve freely before towing the vehicle
away. *
NOTE Damag
e due to excessive tractive
power If you pull away sharply, the tractive power
ma

y be too high and the vehicles could be
damaged. 
Pull away slowly and smoothly. Loading the vehicle for transport
Hybrid vehicles:
tr
ansportation of vehicles should
only be carried out by professional recovery com-
panies. 
Observe the notes on towing away
( pag
e 361). 
Connect the towing device to the towing eye
in or

der to load the vehicle.
% You can also attach the tow bar to the trailer
hitc
h. 362
Breakdown assistance


Vehicles with automatic transmission: shis t he
automatic transmission to position i.
% Vehicles with automatic transmission: t
he
automatic transmission may be locked in posi-
tion j in the event of damage to the electri-
cal system. To shis to i, provide the on-
board electrical system with power
(  page 357). 
Vehicles with manual transmission: shis t
o
neutral. 
Load the vehicle onto the transporter. 
Vehicles with automatic transmission: shis t
he
automatic transmission to position j.
Vehicles with manual transmission: eng
age
Nrst or reverse gear. 
Use the electric parking brake to secure the
v

ehicle against rolling away. 
Only secure the vehicle by the wheels. Vehicles with adaptive damping adjustment &
WARNING Risk of an accident when tr
ans-
porting vehicles with adaptive damping
adjustment
When transporting vehicles with adaptive
dam
ping adjustment, the vehicle/trailer com-
bination may begin to rock and start to skid. 
Load the vehicle correctly onto the
tr
ansporter. 
Secure the vehicle on all four wheels
wit

h suitable tensioning straps. *
NOTE Damag
e to the vehicle from secur-
ing it incorrectly 
Aser loading, t
he vehicle must be
secured on all four wheels. Otherwise,
the vehicle could be damaged. 
A minimum distance of 20 cm upwards
and 10 cm
downwards must be kept to
the transport platform. 
Secure the vehicle on all four wheels aser
loading.
4MATIC vehicles/vehicles with automatic trans-
mission 
Make sure that the front and rear axles come
t
o rest on the same transportation vehicle.
* NOTE Damag
e to the drive train due to
incorrect positioning of the vehicle 
Do not position the vehicle above the
connection point of t

he transport vehi-
cle. Breakdown assistance
363

Towing eye storage location
The towing hook is in the load compartment
under t
he load compartment Ooor.Fitting and removing the towing eye

Press the mark on cover 1 in
wards and
remove. 
Screw in the towing eye clockwise as far as it
will go and tight

en.
Vehicles with a trailer hitch: v
ehicles with a trailer
hitch do not have a rear bracket for the towing
eye. Fasten the tow bar to the trailer hitch. 
Make sure that cover 1 eng
ages in the
bumper when you remove the towing eye.
* NOTE Damag
e to the vehicle due to incor-
rect use of the towing eye or trailer hitch When a towing eye or trailer hitch is used to
r
ecover a vehicle, the vehicle may be damaged
in the process. 
Only use the towing eye or trailer hitch to
t

ow away or tow start the vehicle. 
Do not use the towing eye or trailer hitch
t

o tow the vehicle during recovery. Tow-starting the vehicle
Vehicles with automatic transmission
* NOTE Damag
e to the automatic transmis-
sion due to tow-starting The automatic transmission may be damaged
in t
he process of tow-starting vehicles with
automatic transmission. 
Vehicles with automatic transmission
mus

t not be tow-started. 
Vehicles with an automatic transmission must
no

t be tow-started.
Vehicles with manual transmission 
Observe the notes on towing away
( pag
e 361). 
If necessary, allow the engine and exhaust
sy

stem to cool down. 
Switch on the ignition. 
Engage second gear. 
Release the electric parking brake. 364
Breakdown assistance


Tow-start the vehicle while the clutch pedal is
full y depressed. 
Slowly release the clutch pedal. 
Immediately shis t
o neutral if the engine
starts. 
Stop the vehicle in accordance with the tr
aPc
conditions. 
Remove the tow bar. 
Remove the towing eye. 
Have the vehicle checked at a q
ualiNed spe-
cialist workshop. Electrical fuses
Notes on electrical fuses
&
WARNING Risk of accident and injur
y due
to overloaded lines
If you manipulate or bridge a faulty fuse or if
y
ou replace it with a fuse with a higher amper-
age, the electric line could be overloaded.
This could result in a Nre. 
Always replace faulty fuses with speci-
Ned ne

w fuses containing the correct
amperage. *
NOTE Damag
e due to incorrect fuses Using incorrect fuses can result in damage to
electr
ical components or systems or their
functions being considerably restricted. 
Use only fuses approved for Mercedes-
Benz wit

h the respective speciNed fuse
rating. Blown fuses must be replaced with fuses of the
same r

ating, which you can recognise by the col-
our and the label. The fuse ratings and further
information to be observed can be found in the
fuse assignment diagram.
Fuse assignment diagram: on the fuse box in the
engine compartment ( page 366). *
NOTE Damag
e or malfunctions caused by
moisture Moisture may cause damage to the electrical
sy
stem or cause it to malfunction. 
When the fuse box is open, make sure
t

hat no moisture can enter the fuse box. 
When closing the fuse box, make sure
t

hat the seal of the lid is positioned cor-
rectly on the fuse box. If the newly inserted fuse also blows, have the
cause tr
aced and rectiNed at a qualiNed specialist
workshop.
Ensure the following before replacing a fuse:
= The vehicle is secured against rolling away.
= All electrical consumers are switched oM.
= The vehicle is switched oM.
The electrical fuses are located in various fuse
boxes: = Fuse box in the engine compartment on the
les-hand side of the vehicle, when viewed in
the direction of travel (  page 366) Breakdown assistance
365

=
F use box in the front passenger footwell
( page 366)
= Fuse box in the centre of the boot
( page 367) Opening and closing the fuse box in the engine
com
partment Requirements:
= A dr

y cloth and a screwdriver are available.
Observe the notes on electrical fuses
( page 365).
Open &
WARNING Risk of injur
y from using the
windscreen wipers when the bonnet is
open
If the windscreen wipers start moving when
t
he bonnet is open, you could be trapped by
the wiper linkage. 
Always switch oM t
he windscreen wipers
and vehicle before opening the engine
bonnet. 
Open the bonnet. 
Remove any existing moisture from the fuse
bo

x using a dry cloth. 
Loosen screws 1. 
Press clamps 2 and lis t
he fuse box lid up
and out. The fuse assignment diagram is in a recess on the
side of t

he fuse box.
Closing 
Check whether the seal is positioned correctly
in t
he lid. 
Place the lid on the fuse box. 
Make sure that clamps 2 eng
age. 
Tighten screws 1. 
Close the bonnet. Opening and closing the fuse box in the front
passeng

er footwell Observe the notes on electrical fuses
(
 pag

e 365). 366
Breakdown assistance

Opening

Lis carpet 1 in the direction of the arrow. 
Loosen screws 2 and r
emove the fuse box
lid from the top.
Closing 
Place the lid on the fuse box. 
Tighten screws 2. 
Fold back the carpet. Opening and closing the fuse box in the boot
Observe the notes on electrical fuses
(
 pag

e 365). 
Open the boot Ooor . Fuse box
1 is locat
ed in the centre underneath
the boot Ooor. Breakdown assistance
367