roof MERCEDES-BENZ A-CLASS HATCHBACK 2021 Owners Manual

Symbols
Symbols
.......................................................... 5 5A
A
t a glance
t a glance ...................................................... 6 6
Co ckpit ........................................................... 6
Cockpit (Plug-in-Hybrid) ................................ .10
Indicator and warning lamps (standard) ......... 12
Indicator and warning lamps (widescreen
cockpit) ........................................................ 14
Overhead control panel ................................. 16
Door operating unit and seat adjustment .......18
Emer gencies and breakdowns ....................... 20 Digit Digit
al Owner's Manual
al Owner's Manual ................................. 22 22
Calling up the Digital Owner's Manual ............ 22 Gener
Gener
al not
al notes
es............................................... 24 24
Pr otection of the environment ....................... 24
Ta ke -back of end-of-life vehicles .................... 24
Mercedes-Benz Genuine Parts ........................ 25
Owner's Manual ............................................ 26
Mercedes me App ......................................... 26
Operating saf ety ............................................ 27 Declarations of con
form ity and no tes on
driving in di.erent countries .......................... 29
Diagnostics connection ................................. 39
Quali/ed specialist workshop ........................ 40
Ve hicle registration ....................................... 40
Cor rect use of theve hicle ............................. 40
Information on the REACH regulation ............. 41
No tesfo r persons with electronic medical
aids .............................................................. 41
Implied warranty .......................................... .42
QR code forre scue card .............................. .42
Data storage .................................................42
Copyright ...................................................... 45 Occupant safe Occupant safe
ty
ty ............................................ 46 46
Re straint system .......................................... .46
Seat belts .................................................... .48
Airbags ......................................................... 53
PRE-SAFE ®
system ........................................ 60
Au tomatic measures aTer an accident ........... 61
Safely transporting children in theve hicle ...... 61
No tes on pets in theve hicle .......................... 80 Opening and closing
Opening and closing
...................................... 82 82
Ke y .............................................................. .82
Doors ............................................................ 86
Load compartment ........................................ 90
Side windo ws................................................ 92
Sliding sunroof .............................................. 95
Anti-theT pr otection ...................................... 99 Seats and sto Seats and sto
wing
wing....................................... 102 102
No tes on the cor rect driver's seat position .. 102
Seats ......................................................... .103
St eering wheel ............................................ 112
Easy entry and exitfeature .......................... 113
Memory function ......................................... 114
St ow age areas ............................................ 116
Soc kets ....................................................... 128
Wi reless charging of the mobile phone
and connection with theex terior aerial ........ 130
Fi tting/removing the 0oor mats ................... 132 Light and sight
Light and sight
............................................ 134 134
Exterior lighting ........................................... 134
Interior lighting ............................................ 142 2
2
Contents

Pr
ot
Pr otection of t
ection of t he en
he envir
vironment
onment
+ ENVIR
ENVIR
ONMENT
ONMENT AL NO
AL NOTE
TE Environmental
damage due tooperating conditions and
personal driving st yleThe pollutant emission of
theve hicle is
directly related tothewa yyo u operate the
ve hicle.
Operate your vehicle in an environmentally
re sponsible manner tohelp pr otect the envi-
ro nment. Please obser vethefo llowing recom-
mendations on operating conditions and per-
sonal driving st yle.
Oper
Oper ating conditions:
ating conditions: #
Make sure that the tyre pressure is cor-
re ct. #
Do not car ryany unnecessary weight
(e.g. roof luggage rack s once you no lon-
ge r need them). #
Adhere tothe service inter vals.
A regula rly serviced vehicle will cont rib-
ute toenvironmental pr otection. #
Always ha vemaintenance workcar ried
out at a quali/ed specialist workshop.
P
P er
er sonal dr
sonal dr iving s
iving stytyle:
le: #
Do not depress the accelerator pedal
when starting the engine. #
Do not warm uptheve hicle while sta-
tionar y. #
Drive carefully and maintain a suitable
distance from theve hicle in front. #
Avoid frequent, sudden acceleration and
braking. #
Change gear in good time and use each
ge ar only up toÔ of its maximum
engine speed. #
Switch o. theve hicle in stationary traf-
fi c, e.g. byusing the ECO start/s top
function. #
Drive in a fuel-e1cient manner. Obse rve
th e ECO display for an economical driv-
ing style. Plug-in h Plug-in h
ybr
ybrid
id
+ ENVIR
ENVIR
ONMENT
ONMENT AL NO
AL NOTE
TEEnvironmental
pollution caused byirre sponsible disposal
of the high-voltage battery A high-voltage battery contains materials
which are harmful
tothe environment. #
Dispose of faulty high-voltage batteries
at a quali/ed specialist workshop. T T
ak
ak e-bac
e-bac k of end-of-lif
k of end-of-lif e v
e vehicles
ehicles
EU countr EU countr ies only:
ies onl y:
Mercedes-Benz will take back your end-of-life
ve hicle for environment-fri endly disposal in
accordance with the European Union (EU) End-of-
Life Vehicles Directi ve.
A network of vehicle take -back points and dis-
mantlers has been established foryo uto return
yo ur vehicle. You can lea veit at any of these
points free of charge . This makes an impor tant
cont ribution toclosing there cycling circle and
conserving resources. 24 24
Gene
ral no tes

Fo
r fur ther information about there cycling and
disposal of end-of-life vehicles, and theta ke -back
conditions, please visit the national
Mercedes-Benz website foryo ur countr y. Mer
Mer
cedes-Benz GenuineP
cedes-Benz GenuineP ar
arts
ts
+ ENVIR
ENVIR ONMENT
ONMENT AL NO
AL NOTE
TEEnvironmental
damage caused bynot using recycled
re conditioned components Mercedes‑Benz
AGo.ers recycled recondi-
tioned components and parts with the same
qu ality as new parts. The same entitlement
from the implied warranty is valid as for new
parts. #
Recycled reconditioned components and
parts from Mercedes‑Benz AG. *
N
NO
OTE
TE Impai rment of the operating e1-
ciency of there straint systems from
installing accessor y parts or fromrepairs
or we lding Airbags and seat belt
tensioners, as well as
control units and sensors forth ere straint sys-
te ms, may be ins talled in thefo llowing areas
of your vehicle:
R Doors
R Door pillars
R Door sills
R Seats
R Cockpit
R Instrument clus ter
R Centre console
R Lateral roof frame #
Do not ins tall accessory parts such as
audio systems in these areas. #
Do not car ryout repairs or welding. #
Have accessory parts retro/tted at a
qu ali/ed specialist workshop. Yo
u could jeopardise the operating saf ety of your
ve hicle if you use parts, tyres and wheels as well
as accessories releva nt tosaf ety which ha venot
been app rove dby Mercedes-Benz. Saf ety-re leva nt
systems, e.g. the brake system, may malfunction.
Only use Mercedes-Benz GenuineParts or parts of
equal qualit y.Only use tyres, wheels and acces-
sory parts that ha vebeen speci/cally appr oved
fo ryo ur vehicle model.
Mercedes-Benz tests original pa rts and con ver-
sion parts and accessory parts that ha vebeen
speci/cally appr ovedfo ryo ur vehicle model for
th eir reliability, saf ety and suitability. Despite
ongoing mar ketre sear ch, Mercedes-Benz is
unable toassess other parts. Mercedes-Benz
th erefore accepts no responsibility forth e use of
such parts in Mercedes-Benz vehicles, even if
th ey have been o1cially appr oved or independ-
ently appr ovedby ate sting centre.
Ce rtain parts are only o1cial lyappr ovedfor
installation or modi/cation if they comply with
legal requ irements. All Mercedes-Benz Genuine-
Pa rts meet the appr oval requ irements. The use of
non-appr oved parts may in validate theve hicle's
ge neral ope rating permit. General no
tes
25 25

Be su
retoalso obser vethefo llowing fur ther rela-
te d subjects:
R Child restraint system on the front passenger
seat (/ page 76)
R Suitable positioning of thech ild restraint sys-
te m (/ page 66) PRE-S
PRE-S
AFE
AFE®
®
syst
syst em
em F
F
unction of PRE-S
unction of PRE-S AFE
AFE®
®
(anticipat
(anticipat or
ory occupant
y occupant
pr ot
pr otection)
ection) PRE-SAFE
®
is able todetect cer tain critical driv-
ing situations and implement pre-em ptive meas-
ures toprotect theve hicle occupants.
PRE-SAFE ®
can implement thefo llowing meas-
ures independently of each other:
R Tightening the seat belts on the driver's seat
and front passenger seat.
R Closing the side windo ws.
R V
V ehicles wit
ehicles wit h sliding sunr
h sliding sunr oof:
oof:closing the slid-
ing sunroof. R
V
V ehicles wit
ehicles wit h memor
h memory function:
y function: movingthe
front passenger seat toa more favo urable seat
position.
R PRE-SAFE ®
Sound: pr ovided that the multime-
dia system is switched on, generating a brief
noise signal tostimula tethe innate pr otective
mechanism of a person's hearing.
* NO
NO TE
TEDamage caused byobjects in the
fo ot we ll or behind the seat The automatic adjustment of
the seat position
may result in damage tothe seat and/or the
object. #
Stow objects in a suitable place. R
R
e
ev
ver
er sing t
sing t he PRE-S
he PRE-S AFE
AFE®
®
syst
syst em measur
em measur es
es If an accident did not occur,
the pre-em ptive
measures that we re ta ken are reve rsed.
Yo u will need toper form certain settings yourself. #
Ifth e seat belt pre-tensioning is not reduced,
mo vethe seat backrest back slightl y.
The locking mechanism releases. F
F
unction of PRE-S
unction of PRE-S AFE
AFE®
®
PL
PL US (anticipat
US (anticipat or
ory occu-
y occu-
pant pr ot
pant pr otection plus)
ection plus) PRE-SAFE
®
PLUS can de tect cer tain impacts, par-
ticular lyan imminent rear impact, and take pre-
em ptive measures toprotect theve hicle occu-
pants. These measures cann otnecessarily pre-
ve nt an imminent impact.
PRE-SAFE ®
PLUS can implement thefo llowing
measures independently of each other:
R Tightening the seat belts on the driver's seat
and front passenger seat.
R Activating there ar hazard warning lights at a
higher 0ashing frequency.
R Increasing brake pressure when theve hicle is
stationar y.This brake application is cancelled
automatically when theve hicle pulls away.
If an accident did not occur, the pre-em ptive
measures that we re ta ken are reve rsed.
Syst
Syst em limits
em limits
The system will not initiate any action in thefo l-
lowing situations:
R when reve rsing 60
60
Occupant saf
ety

V
V
ehicles wit
ehicles wit h a panor
h a panorama sliding sunr
ama sliding sunr oof:
oof:the side
windo wswill be closed comple tely ifth e sliding
sunroof is open.
If th e side windo wsare obstructed during auto-
matic closing, the side window concerned will
open again slightl y.ATer an other automatic clos-
ing process, the automatic function forth e sun-
ro of and side windo wsmay be deactivated. The
automatic function will be active again the next
time theve hicle is star ted. Conv Conv
enience opening (v
enience opening (v entilating t
entilating the v
he vehicle
ehicle
bef
bef or
ore st
e st ar
arting a jour
ting a jour ne
ney)
y) &
W
WARNING
ARNING Risk of entrapment when open-
ing a side window
When opening a side windo w,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
to uching the side windo w. #
Release the button immediately if some-
body becomes trapped. R
R
eq
eq uir
uir ements:
ements:
R The key is in the immediate vicinity of theve hi-
cle. #
Press and hold theÜ button on thekey.
The following functions are per form ed:
R The vehicle is unloc ked.
R The side windo wsare opened.
R The pano ramic sliding roof is opened.
R The seat ventilation of the driver's seat is
switched on.
% Ifth ero ller sunblind of the panoramic sliding
sunroof is closed, thero ller sunblind is
opened /rst. #
T
T o int
o int err
errup
upt conv
t conv enience opening:
enience opening: release the
Ü button. #
T
T o continue conv
o continue conv enience opening:
enience opening: press and
hold theÜ button again. Conv
Conv
enience closing (closing t
enience closing (closing t he v
he vehicle fr
ehicle fr om out-
om out-
side)
side) &
W
WARNING
ARNING Risk of entrapment due tonot
paying attention during con venience clos-
ing
When the con venience closing feature is oper-
ating, parts of the body could become trapped
in the closing area of the side window and the
sliding sunroof. #
When the con venience closing feature is
operating, moni torth e entire closing
process and make sure that no body
parts are in the closing area. R
R
eq
eq uir
uir ements:
ements:
R The key is in the immediate vicinity of theve hi-
cle. #
Press and hold theß button on thekey.
The following functions are per form ed:
R The vehicle is loc ked.
R The side windo wsare closed.
R The pano ramic sliding roof is closed. 94
94
Opening and closing

#
T
To int
o int err
errup
upt conv
t conv enience closing:
enience closing: release the
ß button. #
T
To continue conv
o continue conv enience closing:
enience closing: press and
hold theß button again.
% Con venience closing also functions with KEY-
LESS-GO (/ page 87). R
R
esol
esol ving pr
ving pr oblems wit
oblems wit h t
h the side wind ows
he side wind ows &
W
W ARNI NG
ARNI NGRisk of becoming trapped or
fata lly injured if reve rsing pr otection is not
activated
If yo u close a side window again immediately
aTer it has been bloc ked, the side window will
close with increased or maximum forc e. The
re ve rsing function is then not active and body
parts may become trapped. #
Make sure that no parts of the body are
in the closing area. #
Tostop the closing process, release the
button or press the button again to
re open the side windo w. A side windo
A side windo
w canno
w cannot be closed and y
t be closed and y ou cannot
ou cannot
see t
see t he cause.
he cause. #
Che cktosee whe ther any objects are in the
wind owguide. #
Adjust the side windo ws.
A
A djus
djus ting t
ting t he side window
he side window s
s
If a side window is obstructed during closing and
re opens again immediatel y: #
Immediately aTer this, pull and hold the cor re-
sponding button again until the side window
has closed and hold the button for at least one
more second (re-adjustment).
The side window will be closed without the
automatic reve rsing function.
If th e side window is obstructed again and
re opens again immediatel y: #
Immediately aTer this, pull and hold the cor re-
sponding button again until the side window
has closed and hold the button for at least one
more second (follo w-up adjustment).
The side window will be closed without the
automatic reve rsing function. The side window
The side window s canno s cannot be opened or closed
t be opened or closed
using t
using t he conv
he conv enience opening f
enience opening f eatur
eature.
e.
Po ssible causes:
R The key battery is weak or dischar ged. #
Check the battery using the indicator lamp
(/ page 82). #
Replace theke y batter y,if necessary
(/ page 84). Sliding sunr
Sliding sunr
oof
oof Opening and closing t
Opening and closing t
he sliding sunr
he sliding sunroof
oof %
The term "sliding sunroof" also refers to the
panorama sliding sunroof. &
W
WARNING
ARNING Risk of becoming trapped when
th e sliding sunroof is being opened and
closed
Body parts may become trapped in thera nge
of mo vement. Opening and closing
95
95

#
During opening and closing, make sure
th at no body parts are in thera nge of
mo vement. #
Release the button immediately if some-
body becomes trapped.
or #
Brie0y press the button in any direction
during automatic operation.
The opening or closing process will be
stopped. &
W WARNING
ARNING Risk of entrapment if the slid-
ing sunroof is operated bychildren
Children operating the sliding sunroof could
get caught in the moving parts, particular lyif
unattended. #
Never lea vechildren unattended in the
ve hicle. #
When leaving theve hicle, alw aysta ke the
ke y with you and lock theve hicle. &
W
WARNING
ARNING Risk of becoming trapped when
th ero ller sunblind is being opened and
closed
Body parts may become trapped between the
ro ller sunblind and frame or sliding roof. #
When opening or closing, make sure that
no body parts are in thero ller sunblind's
ra nge of mo vement. #
Release the button immediately if some-
body becomes trapped.
or #
Brie0y press the button in any direction
during automatic operation.
The opening or closing process will be
stopped. *
N NOOTE
TE Malfunction due tosnow and ice Sn
ow and ice may cause the sliding sunroof to
malfunction. #
Open the sliding sunroof only if it is free
of snow and ice. *
N
NOOTE
TE Damage caused byprotru ding
objects Objects
that pr otru de from the sliding sunroof
may damage the seals. #
Do not allow anything toprotru de from
th e sliding sunroof. *
N
NOOTE
TE Damage tothe panorama sliding
sunroof due tonon-appro vedro of luggage
ra cks The panorama sliding sunroof may be dam-
aged
bythero of luggage rack ifyo u attem ptto
open it when using a roof luggage rack not
te sted and appro vedfo r Mercedes-Benz. #
When a roof luggage rack is /t ted, open
th e panorama sliding sunroof only if this
has been tested and appro vedfor
Mercedes-Benz.
The pano rama sliding sunroof may be raised
to allow ventilation of theve hicle interior. 96 96
Opening and closing

1
Raise
2 Open
3 Close/lo wer
Use the3 button tooperate the panorama
sliding sunroof and thero ller sunblind.
The panorama sliding sunroof can be operated
only when thero ller sunblind is open. #
Check whe ther the sliding sunroof can be
ra ised or opened when a roof luggage rack is
/t ted. #
T To st
o st ar
art aut
t aut omatic oper
omatic oper ation:
ation:pressthe3
button be yond the point of resis tance or pull
and release it. #
T
To int
o int err
errup
upt aut
t aut omatic oper
omatic oper ation:
ation: brie0y press
th e3 button in any direction.
The opening/closing process will be stopped.
A
A ut
ut omatic rev
omatic rever
ersing function of t
sing function of t he sliding sun-
he sliding sun-
r
r oof
oof
If an obstacle obstructs the sliding sunroof during
th e closing process, the sliding sunroof will open
again automaticall y.The automatic reve rsing func-
tion is only an aid and is not a substitute foryo ur
attentiveness. #
During the closing process, make sure that no
body parts are in the closing area. &
W
WARNING
ARNING Risk of becoming trapped
despite there ve rsing function being active
In particular, there ve rsing function does not
re act:
R tosoT, light and thin objects, e.g. /n gers.
R towa rdsth e end of the closing procedure.
R during resetting. #
During the closing process, make sure
th at no body parts are in the closing
area. #
Release the button immediately if some-
body becomes trapped.
or #
Brie0y press the button in any direction
during automatic operation.
The closing process will be stopped. A A
ut
ut omatic rev
omatic rever
ersing function of t
sing function of t he r
he roller sunblind
oller sunblind
If an obstacle obstructs thero ller sunblind during
th e closing process, thero ller sunblind will open
again automaticall y.The automatic reve rsing func-
tion is only an aid and is not a substitute foryo ur
attentiveness. Opening and closing
97
97

#
When closing thero ller sunblind, make sure
th at no body parts are in thera nge of mo ve-
ment. &
W
WARNING
ARNING Risk of becoming trapped
despite reve rsing function
In particular, there ve rsing function does not
re act tosoT, light and thin objects, e.g. /n-
ge rs. #
When closing thero ller sunblind, make
sure that no body parts are in thera nge
of mo vement. #
Release the button immediately if some-
body becomes trapped.
or #
Brie0y press the button in any direction
during the automatic closing process.
The closing process will be stopped. A
A
ut
ut omatic functions of t
omatic functions of t he sliding sunr
he sliding sunroof
oof%
The term "sliding sunroof" also refers to the
panorama sliding sunroof. The sliding sunroof will be closed automatically
when theve hicle has been switched o. in thefo l-
lowing situations:
R if it starts torain
Ra in is de tected byara in sensor on the wind-
screen.
R inextreme temp eratures
R aTer a cer tain time (depending on the on-
board electrical system voltage)
R ifth ere is a malfunction in the po wer supply
The sliding sunroof will rise at there ar in order to
continue ventilating theve hicle interior.
If th e sliding sunroof is obstructed during an auto-
matic closing procedure, thero of will be opened
again slightl y.The automatic function forth e slid-
ing sunroof and the side windo wswill then be
deactivated.
R
R ain-closing f ain-closing f eatur
eature when dr
e when dr iving
iving
V
V ehicles wit
ehicles wit h a panor
h a panorama sliding sunr
ama sliding sunr oof:
oof:if it
starts torain, thera ised sliding sunroof will auto-
matically be lo wered while theve hicle is in
motion. A
A
ut
ut omatic low
omatic low er
ering function
ing function
V
V ehicles wit
ehicles wit h a panor
h a panorama sliding sunr
ama sliding sunr oof:
oof:ifthe
sliding sunroof is raised at there ar, it will auto-
matically be lo wered slightly at higher speeds. At
low speeds, it will be raised again automaticall y. &
W
W ARNI NG
ARNI NGRisk of becoming trapped by
automatic lo wering of the sliding sunroof
At higher speeds, thera ised sliding sunroof
will automatically be lo wered slightly at the
re ar. #
Make sure that nobody reaches into the
sliding sunroof's range of mo vement
while theve hicle is in motion. #
If somebody becomes trapped, brie0y
push the sliding sunroof button forw ards
or backwards. %
By pushing or pulling the3 button, you
can inter rupt the automatic functions "Rain
closing function when driving" and "Automatic
lo we ring". 98 98
Opening and closing

R
R
ectifying pr
ectifying pr oblems wit
oblems with t
h the sliding sunr
he sliding sunr oof
oof &
W
WARNING
ARNING Risk of becoming trapped or
fata l injuries when the sliding sunroof is
closed again
If th e sliding sunroof is closed again immedi-
ately aTer it has been bloc ked or reset, it will
close with increased forc e. #
Make sure that no parts of the body are
in the closing area. #
Release the button immediately if some-
body becomes trapped.
or #
Brie0y press the button in any direction
during the automatic closing process.
The closing process will be stopped. The sliding sunr
The sliding sunr
oof canno
oof cannot be closed and y
t be closed and y ou can-
ou can-
no
no t see t
t see t he cause.
he cause.
% The term "sliding sunroof" also refers to the
panorama sliding sunroof.
If th e sliding sunroof is obstructed during closing
and reopens again slightl y: #
Immediately aTer automatic reve rsing, pull
and hold the3 button down again tothe
point of resis tance until the sliding sunroof is
closed.
The sliding sunroof will be closed with
increased forc e.
If th e sliding sunroof is obstructed again and
opens again slightl y: #
Repeat the pr evious step.
The sliding sunroof will be closed again with
increased forc e.
V V ehicles wit
ehicles wit h a panor
h a panorama sliding sunr
ama sliding sunr oof: t
oof: the slid-
he slid-
ing sunr
ing sunr oof or t
oof or the r
he roller sunblind is no
oller sunblind is no t oper
t operating
ating
smoot
smoot hly
hly.
. #
Reset the sliding sunroof and thero ller sun-
blind.
R
R ese
ese tting t
tting t he sliding sunr
he sliding sunr oof and t
oof and the r
he roller sun-
oller sun-
blind
blind #
Pull and hold the3 button little bylittle
until the sliding sunroof is fully closed. #
Pull and hold the3 button little bylittle
until thero ller sunblind is fully closed. #
Use automatic operation tofully open and
th en close the sliding sunroof. Anti-t
Anti-theT
heTprot
pr otection
ection F
F
unction of t
unction of t he immobiliser
he immobiliser The immobiliser pr
events your vehicle from being
star ted without the cor rect key.
The immobiliser is automatically activated when
th eve hicle is switched o., and deactivated when
th eve hicle is switched on. A A
T
TA
A (Anti-
(Anti- TheT
TheT Alar
Alarm syst
m syst em)
em) F
F
unction of t
unction of t heAT
he ATA systA syst em
em
If th eATA system is primed, a visual and audible
alarm is triggered in thefo llowing situations:
R when a door is opened
R when theta ilgate is opened
R when the bonnet is opened
R when interior pr otection is triggered
(/ page 101) Opening and closing
99
99