MERCEDES-BENZ A-CLASS SALOON 2022 Owners Manual

Centrally locking and unlocking the vehicle from
t he inside 
To unlock: pr
ess 1 button. 
To lock: pr
ess button 2.
The red indicator lamp on button 2 lights up
once the vehicle is locked.
This does not lock or unlock the fuel Nller Oap.Plug-in hybrid: t

he socket Oap is also locked and
unlocked. The socket Oap can be opened even if a
key is detected in the car.
The vehicle is not unlocked:
= if you have locked the vehicle using the key
= if you have locked the vehicle using KEYLESS-
GO Locking/unlocking the vehicle with KEYLESS-GO
Requirements:
= The k

ey is outside the vehicle.
= The distance between the key and the vehicle
does not exceed 1 m.
= The driver's door and the door on which the
door handle is used are closed.
* NOTE Damag
e to the vehicle caused by
unintentionally opening the boot lid =
when using an aut
omatic car wash
= when using a high pressure cleaner 
Deactivate the function of the key in
t

hese situations.
or 
Make sure that the key is at a minimum
dis

tance of 3 m away from the vehicle. Observe the notes:
= on w

ashing the vehicle in a car wash
(  page 337)
= on using a high pressure cleaner
( page 339) 88
Opening and closing


To unlock the vehicle: t ouch the inner surface
of the door handle. 
To lock the vehicle: t
ouch sensor surface 1
or 2. 
Convenience closing: t
ouch recessed sensor
surface 2 until the closing process has been
completed. %
Further information on convenience closing
(  pag

e 97).
If you open the boot lid from outside, the boot lid
is aut
omatically unlocked. Problems with KEYLESS-GO, troubleshooting
You can no longer lock or unlock the vehicle using
KEYLESS-GO
P

ossible causes:
= The function of the key has been deactivated.
= The key battery is weak or discharged. 
Activate the function of the key ( pag
e 84). 
Check the battery using the indicator lamp
( pag

e 83). 
Replace the key battery, if necessary
( pag
e 85). 
Use the replacement key. 
Use the emergency key to lock or unlock
( pag

e 90). 
Have the vehicle and key checked at a quali-
Ned specialis

t workshop. There is interference from a powerful radio signal
sour

ce
Possible causes if the function of KEYLESS-GO is
impaired:
= high voltage power lines
= mobile phones
= electronic devices (notebooks, tablets)
= shielding due to metal objects or induction
loops for electrical gate systems or automatic
barriers 
Make sure that there is suPcient dis
tance
between the key and the potential source of
interference. Activating/deactivating the automatic locking fea-
tur
e The vehicle is locked automatically when the vehi-
cle is switc

hed on and the wheels are turning
faster than walking pace. Opening and closing
89


To activate: pr ess and hold button 2 for
approximately Nve seconds until an acoustic
signal sounds. 
To deactivate: pr
ess and hold button 1 for
approximately Nve seconds until an acoustic
signal sounds.
The red indicator lamp on button 2 lights up
once t
he vehicle is locked. In the following situations, there is a danger of
being loc

ked out when the function is activated:
= while the vehicle is being tow-started or
pushed
= if the vehicle is being tested on a roller dyna-
mometer Locking/unlocking the vehicle with the emer-
g

ency key Locking/unlocking the driver's door with the
emer

gency key
% If you wish to lock the vehicle entirely using
t
he emergency key, Nrst press the button for
locking from the inside while the driver's door
is open. Then proceed to lock the driver's
door using the emergency key. 
Remove the emergency key (  pag
e 85). 
Insert the emergency key as far as it will go
int
o opening 1 in the cover. 
Pull and hold the door handle. 
Pull the cover on the emergency key as
s

traight as possible away from the vehicle until
it releases. 
Release the door handle. 90
Opening and closing


To unlock: tur n the emergency key anti-clock-
wise to position 1. 
To lock: tur
n the emergency key clockwise to
position 1. 
Carefully press the cover onto the lock cylin-
der until it eng

ages and is seated Nrmly.Locking the front passenger door and rear doors

Insert a suitable object, e.g. the emergency
k
ey, into opening 1 on the door lock. 
To lock the les-hand side of t
he vehicle: turn
the emergency key anti-clockwise as far as it
will go. 
To lock the right-hand side of the vehicle: tur
n
the emergency key clockwise as far as it will
go.
If the locked door is then closed, it can no longer
be opened fr
om the outside. Boot
Opening the boot lid
&
DANGER Risk of e
xhaust gas poisoning
Combustion engines emit poisonous exhaust
g
ases such as carbon monoxide. Exhaust
gases can enter the vehicle interior if the boot
lid is open when the engine is running, espe-
cially if the vehicle is in motion. 
Always switch oM t
he engine before
opening the boot lid. 
Never drive with the boot lid open. Opening and closing
91

*
NOTE Damag e to the boot lid by obstacles
above the vehicle The boot lid swings upwards when it is
opened.

Therefore, make sure that there is suP-
cient clear

ance above the boot lid. 
Pull the boot lid handle. 
Vehicles with HANDS-FREE ACCESS: mak
e a
kicking movement with your foot below the
bumper ( page 93). 
Pull remote operating switch 1 until t
he boot
lid opens.
or 
Press and hold the

Note that the boot lid will not be locked if the fol-
lo wing situation occurs:
= You have locked the vehicle and close the
boot lid while a key belonging to the vehicle is
inside the vehicle.
and
= A second key belonging to the vehicle is not
detected outside the vehicle.
Automatic key recognition is only an aid and is not
a substitute for your attentiveness. 
Before locking, ensure that at least one key
belonging t

o the vehicle is outside the vehicle. 
To close the boot lid: pull t
he boot lid down-
wards using the handle recess and push it
closed. HANDS-FREE ACCESS function
With HANDS-FREE ACCESS you can open the
boo

t lid by performing a kicking movement under
the bumper.
Observe the notes when opening the boot lid
(  page 91). &
WARNING Risk of bur
ns caused by a hot
exhaust system
The vehicle exhaust system can become very
ho
t. If you use HANDS-FREE ACCESS, you
could burn yourself by touching the exhaust
system. 
Always ensure that you only make a kick-
ing mo

vement within the detection range
of the sensors. *
NOTE Damag
e to the vehicle caused by
unintentionally opening the boot lid =
when using an aut
omatic car wash
= when using a high pressure cleaner 
Deactivate the function of the key in
t

hese situations.
or 
Make sure that the key is at a minimum
dis

tance of 3 m away from the vehicle. Opening and closing
93

When making the kicking movement, make sure
t
hat you are standing Nrmly on the ground. You
could otherwise lose your balance, e.g. on ice.
Observe the following notes: = The key is behind the vehicle.
= Stand at least 30 cm away from the vehicle
while performing the kicking movement.
= Do not come into contact with the bumper
while making the kicking movement.
= Do not carry out the kicking movement too
slowly.
= The kicking movement must be towards the
vehicle and back again. 1
Detection range of the sensors
If several consecutive kicking movements are not
successful, w
ait ten seconds.
System limits
The system may be impaired or may not function
in the following cases:
= The sensors are dirty, e.g. due to road salt or
snow.
= The kicking movement is made using a pros-
thetic leg. The boot lid could be opened unintentionally, in
t

he following situations:
= A person's arms or legs are moving in the sen-
sor detection range, e.g. when polishing the
vehicle or picking up objects.
= Objects are moved or placed behind the vehi-
cle, e.g. the fuel pump hose, charging cable or
luggage.
= Clamping straps, tarpaulins or other coverings
are pulled over the bumper.
= A protective mat with a length reaching over
the boot sill down into the detection range of
the sensors is used.
= The protective mat is not secured correctly.
= Work is being done on the trailer hitch, trailers
or rear bicycle racks.
Deactivate the function of the key ( page 84) or do not carry the key about your person in such
situations. 94
Opening and closing

Side windows
Opening and closing the side windows
&
WARNING Risk of becoming tr apped when
opening a side window
When you open a side window, parts of the
body could be dr
awn in or become trapped
between the side window and window frame. 
When opening, make sure that nobody is
t
ouching the side window. 
If someone is trapped, release the but-
t
on immediately or pull it in order to
close the side window again. &
WARNING Risk of becoming tr
apped when
closing a side window
When closing a side window, body parts could
be tr
apped in the closing area in the process. 
When closing, make sure that no body
par

ts are in the closing area. 
If someone is trapped, release the but-
t
on immediately or press the button in
order to reopen the side window. &
WARNING Risk of becoming tr
apped when
children operate the side windows
Children could become trapped if they operate
t
he side windows, particularly when unatten-
ded. 
Activate the child safety lock for the rear
side windo
ws. 
When leaving the vehicle, always take the
k
ey with you and lock the vehicle. 
Never leave children unattended in the
v
ehicle. Requirements:
= The po

wer supply or the vehicle has been
switched on. 1
Closing
2 Open
The buttons on the driver's door take precedence. 
To start automatic operation: pr
ess the b
button beyond the point of resistance or pull
and release it. 
To interrupt automatic operation: pr
ess or pull
the b button again. Opening and closing
95

When the vehicle is switched
oM, y ou can con-
tinue to operate the side windows.
This function is available for around four minutes
or until a front door is opened.
Automatic reversing function of the side windows
If an obstacle impedes a side window during the
closing process, the side window will open again
automatically. The automatic reversing function is
only an aid and is not a substitute for your atten-
tiveness. 
During the closing process, make sure that no
body par
ts are in the closing area. &
WARNING Risk of becoming tr
apped
despite there being reversing protection
on the side window
The reversing function does not react: = t

o sos, light and thin objects, e.g. Nngers.
= during resetting.
The reversing function cannot prevent some-
one from becoming trapped in these situa-
tions. 
During the closing process, make sure
t
hat no body parts are in the closing
area. 
If someone becomes trapped, press the
b butt

on to open the side window
again. Automatic function of the side windows
In the following cases, the side windows will be
closed aut

omatically when the vehicle is switched
oM:
= if it starts to rain
Rain is detected by a rain sensor on the wind-
screen.
= in extreme temperatures
= aser a certain time (depending on the on-
board electrical system voltage)
= if there is a malfunction in the power supply
The side windows will be closed as far as the ven-
tilation position. Vehicles with a panorama sliding sunroof:
t
he side
windows will be closed completely if the sliding
sunroof is open.
If the side windows are obstructed during auto-
matic closing, the side window concerned will
open again slightly. Aser another automatic clos-
ing process, the automatic function may be deac-
tivated. Aser about ten seconds, the automatic
function is active again. Convenience opening (ventilating the vehicle
bef

ore starting a journey) &
WARNING Risk of entr
apment when open-
ing a side window
When opening a side window, parts of the
body could be dr
awn in or become trapped
between the side window and window frame. 
When opening, make sure that nobody is
t
ouching the side window. 
Release the button immediately if some-
body becomes tr

apped.96
Opening and closing

Requirements:
= The k
ey is in the immediate vicinity of the vehi-
cle. 
Press and hold the Ü butt
on on the key.
The following functions are performed:
= The vehicle is unlocked.
= The side windows are opened.
= The panoramic sliding roof is opened.
= The seat ventilation of the driver's seat is
switched on.
% If the roller sunblind of the panoramic sliding
sunr

oof is closed, the roller sunblind is
opened Nrst. 
To interrupt convenience opening: r
elease
Ü the button. 
To continue convenience opening: pr
ess and
hold the Ü button again. Convenience closing (closing the vehicle from out-
side)
&
WARNING Risk of entr
apment due to not
paying attention during convenience clos-
ing
When the convenience closing feature is oper-
ating, par
ts of the body could become trapped
in the closing area of the side window and the
sliding sunroof. 
When the convenience closing feature is
oper
ating, monitor the entire closing
process and make sure that no body
parts are in the closing area. Requirements:
= The k

ey is in the immediate vicinity of the vehi-
cle. 
Press and hold the ß butt
on on the key.
The following functions are performed:
= The vehicle is locked.
= The side windows are closed.
= The panoramic sliding roof is closed. 
To interrupt convenience closing: r
elease the
ß button. 
To continue convenience closing: pr
ess and
hold the ß button again.
% Convenience closing also functions with KEY-
LESS-GO
( page 88). Resolving problems with the side windows
&
WARNING Risk of becoming tr
apped or
fatally injured if reversing protection is not
activated
If you close a side window again immediately
aser it has been bloc

ked, the side window will
close with increased or maximum force. The
reversing function is then not active and body
parts may become trapped. 
Make sure that no parts of the body are
in t

he closing area. 
To stop the closing process, release the
butt

on or press the button again to
reopen the side window. Opening and closing
97