exit vehicle 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

or
R when theve hicle is towing a trailer and there
is a risk of a rear impact
The system will not initiate any braking application
in thefo llowing situations:
R whilst driving
or
R when entering or exiting a parking space while
using Active Parking Assist A A
ut
ut omatic measur
omatic measur es
esaTer
aTer an accident
an accident
Depending on the type and se verity of the acci-
dent, and depending on theve hicle's equipment,
th efo llowing measures can be implemented, for
ex ample:
R automatic braking (post-collision brake)
R activating the hazard warning lights
R triggering an automatic emer gency call
(/ page 320)
R switching o. the engine To
start theve hicle again, switch theve hicle
o. and on once more (/ page 166). Depend-
ing on the type and se verity of the accident,
yo u may no longer be able tostart theve hicle.
R switching o. the fuel supply
R v
v ehicles wit
ehicles wit h h
h hybr
ybr id dr
id dr iv
ive:
e: switching o. the
hy brid system and high-voltage on-board elec-
trical system
R unlocking theve hicle doors
R lowe ring the side windo ws
R displaying the emer gency guide in the multi-
media system display
R switching on the interior lighting
F
F unction of t
unction of t he pos
he post-collision brt-collision br ake
ake
Depending on the accident situation, the post-col-
lision brake can minimise the se verity of a fur ther
collision or evenavo id it.
If an accident is de tected, the post-collision brake
can implement automatic braking. When theve hi-
cle has come toa standstill, the electric parking
brake is automatically applied. The driver can cancel automatic braking
bytaking
th efo llowing actions:
R braking more strongly than automatic braking
R fully depressing the accelerator pedal with
fo rce Saf
Saf
el
ely tr
y tr anspor
anspor ting c
ting childr
hildren in t
en in t he v
he vehicle
ehicle Alw
ay
Alw ays observ
s observ e when c
e when c hildr
hildren ar
en ar e trav
e tr avelling in t
elling in t he
he
v
v ehicle
ehicle %
Also strictly obser vethe saf ety no tesfo rthe
speci/c situation. In this wa yyo u can recog-
nise po tential risks and avoid dangers if chil-
dren are tr avelling in theve hicle
(/ page 62).
Be dilig
Be dilig ent
ent
Bear in mind that negligence when securing a
ch ild in thech ild restraint system ma y haveseri-
ous conse quences. Alw ays be dili gent in securing
a ch ild carefully before every journe y.
Ne ver allow babies and children totrave l sitting
on the lap of ano ther vehicle occupant. Occupant saf
ety
61
61

#
Adjust height 2and distance 3tothe
stee ring wheel.
Loc
Loc king
king #
Foldrelease le ver1 up as far as it will go. #
Check and make sure that the steering col-
umn is loc kedby moving the steering wheel. Switc
Switc
hing t
hing t he st
he steer
eering wheel heat
ing wheel heat er
er on/o.
on/o. R
R
eq
eq uir
uir ements:
ements:
R The vehicle is switched on. #
Push the switch into position 1or2.
If indicator lamp 3lights up, the steering
wheel heater is switched on.
When you switch theve hicle o., the steering
wheel heater will switch o.. Easy entr
Easy entr
y and e
y and exit f
xit feature
eature Using t
Using t
he easy entr
he easy entr y and e
y and exit f
xit feature
eature &
W
WARNING
ARNING Risk of accident when pulling
awa y during the adjustment process of
th e easy entry and exitfeature
Yo u could lose control of theve hicle. #
Alwayswa it until the adjustment process
is comple tebefore driving o.. &
W
WARNING
ARNING Risk of becoming trapped dur-
ing adjustment of the easy entry and exit
fe ature
Yo u and other vehicle occupants could
become trapped. #
Ensu rethat no-one has any body parts in
th era nge of mo vement of the seat.
If th ere is a risk of becoming trapped bythe
driver's seat: #
Press the seat adjustment switch.
The adjustment process will be stopped. Seats and st
owing
113
113

Yo
u can stop the adjustment process bypressing
one of the memory function position switches. &
W
WARNING
ARNING Risk of becoming trapped if
ch ildren activate the easy entry and exit
fe ature‑
Child ren could become trapped if they acti-
va te the easy entry‑ and exitfeature, particu-
lar lywhen unat tended. #
Never lea vechildren unattended in the
ve hicle. #
When leaving theve hicle, alw aysta ke the
ke y with you and lock theve hicle. When
the easy entry and exitfeature is active, the
driver's seat will mo vebackwards and the bac k-
re st will be mo vedto a steeper position when:
R You switch the ignition o. when the driver's
door is open
R You open the driver's door when the ignition is
switched o. %
The driver's seat will then mo vebackwards
only if it is not already at there ar of the seat
adjustment range.
The seat backrest will then mo ve forwards
only if it is not already at the front of the bac k-
re st adjustment range.
The driver's seat will mo veback tothe last drive
position when:
R You switch the ignition on with the driver's
door closed.
R You close the driver's door when the ignition is
switched on
The last drive position will be sa ved when:
R You switch the ignition o..
R You call up the seat settings via the memory
function.
R You sa vethe seat settings via the memory
function. Se
Se
tting t
tting t he easy entr
he easy entr y and e
y and exit f
xit feature
eature Multimedia system:
4 © 5
Settings 5
Vehicle
5 Automatic seat adjustment
5 Easy Entry/Exit #
Activate or deactivate the function. Memor
Memor
y function
y function F
F
unction of t
unction of t he memor
he memory function
y function &
W
WARNING
ARNING Risk of an accident if the mem-
ory function is used while driving
If yo u use the memory function on the driver's
side while driving, you could lose control of
th eve hicle as a result of the adjustments
being made. #
Only use the memory function on the
driver's side when theve hicle is station-
ar y. 114
114
Seats and st
owing

%
Ifth e system de tects an intelligent stop inhibi-
to r,fo rex ample, a stop sign, the engine will
not stop.
If yo u activate the HOLD function or engage
th e park position j,the engine can be
switched o. in spite of an intelligent stop
inhibitor.
% In transmission position k,the engine is not
switched o. automatically even when the
HOLD function is switched on.
The engine restarts au tomatically in thefo llowing
cases:
R V Vehicles wit
ehicles wit h manual tr
h manual tr ansmission:
ansmission: Yo u
depress the clutch pedal.
R V
Vehicles wit
ehicles wit h aut
h automatic tr
omatic tr ansmission:
ansmission: Yo u
shiT into transmission position hork.
R You depress the accelerator pedal.
R An automatic vehicle engine start is requ ired.
St atus displ ayinthe inst rument displa y:
R The symbol è(gre en) appears when the
ve hicle is at a standstill: The engine was
switched o. bythe ECO start/s top function. R
The symbol ç(yellow) appears when the
ve hicle is at a standstill: Not all vehicle condi-
tions for an engine stop ha vebeen met.
R Neither the symbol ènorç appears
when theve hicle is at a standstill: An intelli-
ge nt stop inhibitor was de tected, e.g. a stop
sign.
R The symbol sappears: The ECO start/
stop function is deactivated or there is a mal-
function.
If th e engine was switched o. bythe ECO start/
stop function and you lea vetheve hicle, a warning
to ne sounds and the engine is not restar ted. In
addition, the display message Vehicle is opera-
tional Switch off ignition before exiting appears
in the inst rument displa y.Ifyo u do not switch o.
th eve hicle, it is automatically switched o. aTer
th re e minutes. Deactiv
Deactiv ating or activ
ating or activ ating t
ating the EC
he ECO st
O star
art/st
t/st op
op
function
function #
Press button 1.
A display appears in the inst rument clus ter
when switching the ECO start/s top function
o./on.
% A continuous sdisplay appears in the
inst rument clus ter while the ECO start/s top
function is deactivated. Driving and pa
rking
173
173

Use
the DIRECT SELECT le verto switch the trans-
mission position. The cur rent transmission posi-
tion is displa yed in the inst rument displa y. j
Park position
k Reversege ar
i Neutral
h Drive position Eng
Eng
aging rev
aging rever
erse g
se g ear R
ear R #
Depress the brake pedal and push the DIRECT
SELECT le ver upwards past the /r stpoint of
re sis tance.
Eng
Eng aging neutr
aging neutr al N
al N #
Dep ress the brake pedal and push the DIRECT
SELECT le ver up or down tothe /rst point of
re sis tance.
% ToshiT into neutral iwith theve hicle
switched on, push the selector le ver up or
down for se veral seconds tothe /rst point of
re sis tance.
Subsequently releasing the brake pedal will allow
yo uto mo vetheve hicle freel y,e.g. topush it or
to w it away.
Pr
Pr oceed as f
oceed as f ollow
ollow s if y
s if you w
ou w ant t
ant the aut
he aut omatic
omatic
tr
tr ansmission t
ansmission t o r
o remain in neutr
emain in neutr al
ali
i ev
even if t
en if t he
he
v
v ehicle is switc
ehicle is switc hed
hedo.
o.or t
or t he dr
he dr iv
iver's door is
er's door is
opened:
opened: #
Depress the brake pedal and engage neutral
i when the car is stationar y. #
Release the brake pedal. #
Switch o. theve hicle. %
Ifyo uth en exitth eve hicle leaving theke y in
th eve hicle, the automatic transmission
re mains in neut rali.
Eng
Eng aging par
aging par k position P
k position P #
Obser vethe no tes on parking theve hicle
(/ page 211). #
Depress the brake pedal until theve hicle
comes toa standstill. #
When theve hicle is at a standstill, press but-
to nj.
When the transmission position display sho ws
j ,th e park position is engaged. If no trans-
mission position display jappears, secure
th eve hicle toprev ent it from rolling away.
% Depending on the situation, it may take a
short time until jis engaged. Therefore,
alw ays pay attention tothe transmission posi-
tion displa y.
Pa rk position jis engaged automatically if one
of thefo llowing conditions is met:
R You switch the stationary vehicle o. in trans-
mission position hork. 184
184
Driving and parking

R
EBD (E Electronic B Brakeforce D Distribution)
( / page 224)
R STEER CONTROL (/ page 224)
R HOLD function (/ page 225)
R Hill Start Assist (/ page 226)
R Adaptive Brake Lights (/ page 226)
R Start-o. assist (/ page 227)
R ATTENTION ASSIST (/ page 227)
R Cruise cont rol (/ page 229)
R Limiter (/ page 229)
R Tra1c Sign Assist (/ page 247)
R Speed Limit Assist (countr y-dependent)
(/ page 246)
R Suspension with adaptive damping adjustment
(/ page 254)
Dr
Dr iving Assist
iving Assist ance pack
ance package
age
The following functions are part of the Driving
Assistance Package. Cer tain functions are only
av ailable in some countries. Some functions are
also available without the Driving Assistance
Pa ckage, albeit with restric ted functionality. R
Active Distance Assist DISTRONIC
(/ page 232)
R Active Speed Limit Assist (countr y-dependent)
(/ page 236)
R Route-based speed adap tation (countr y-
dependent) (/ page 237)
R Active Brake Assist (/ page 241)
R Active Steering Assist (countr y-dependent)
(/ page 238)
R Active Emer gency Stop Assist (countr y-
dependent) (/ page 240)
R Blind Spot Assist and Active Blind Spot Assist
with exitwa rning (/ page 249)
R Active Lane Keeping Assist (/ page 252)
P
P ar
ar king P
king P ack
ackage
age
R Reversing camera (/ page 255)
R 360° Camera (/ page 257)
R Parking Assist PARKTRONIC (/ page 261)
R Active Parking Assist (/ page 265) F
F
unctions of ABS
unctions of ABS The Anti-lock Brake System (ABS)
regulates the
brake pressure in critical driving situations:
R During braking, for instance, at maximum full-
stop braking or if there is insu1cient tyre trac-
tion, the wheels are pr evented from locking.
R Vehicle steerability while braking is ensu red.
If ABS inter venes when braking, you will feel a
pulsing in the brake pedal. The pulsating brake
pedal can be an indication of hazardous road con-
ditions and can ser veas a reminder totake extra
care while driving.
Syst
Syst em limits
em limits
R ABS is acti vefrom speeds of approx. 5 km/h.
R ABS may be impaired or may not function if a
malfunction has occu rred and theye llow !
ABS warning lamp lights up continuously aTer
th eve hicle is star ted. Driving and parking
221
221

R
The transmission is in position h.
R The driver's door is closed.
R Che ckofthera dar sensor system has been
successfully comple ted.
R Parking Assist PARKTRONIC is not being used
to park theve hicle or toexit from a parking
space. #
T
To oper
o oper at
ate A
e A ctiv
ctiv e Dist
e Dist ance Assis
ance Assist t
DIS
DIS TR
TRONIC:
ONIC: pressthero ck er switches on the
stee ring wheel cont rol unit up or down tothe
desired position.
Switc
Switc hing be
hing be tw
tween A
een A ctiv
ctive Dist
e Dist ance Assis
ance Assist t
DIS
DIS TR
TRONIC and t
ONIC and t he limit
he limiter
er #
Press theI button.
A A ctiv ctiv ating t
ating t he v
he v ar
ariable limit
iable limit er or A
er or Activ
ctive Dist
e Dist ance
ance
Assis
Assist DIS t DISTR
TRONIC
ONIC #
T
To activ
o activ at
ate wit
e wit hout a st
hout a st or
ored speed:
ed speed: press
ro ck er switch 1upM or down N, or
select Jwiththe leT rock er switch.
or #
T
To activ
o activ at
ate wit
e wit h a st
h a st or
ored speed:
ed speed: selectJ
with the leT rock er switch. #
A
Activ
ctiv e Dist
e Dist ance Assis
ance Assist DIS t DISTR
TRONIC:
ONIC: remo ve
yo ur foot from the accelerator pedal.
The cur rent vehicle speed is stored and main-
ta ined (Active Distance Assist DISTRONIC) or
limited (variable limiter) bytheve hicle.
A
A dop
dop ting a det
ting a det ect
ected speed limit
ed speed limit #
Activate Active Distance Assist DISTRONIC. #
If a tra1c sign has been de tected and is dis-
pla yed in the inst rument clus ter: select J
with the leT rock er switch.
The maximum permissible speed on the tra1c
sign is adop ted as the stored speed. The vehi-
cle adapts its speed tothat of theve hicle in
front, but only up tothe stored speed.
Pulling awa
Pulling away wit
y wit h A
h Activ
ctiv e Dist
e Dist ance Assis
ance Assis t
t
DIS
DIS TR
TRONIC
ONIC #
Activate Active Distance Assist DISTRONIC
and remo ve yo urfoot from the brake pedal. #
Select Jwiththe leT rock er switch.
or #
Depress the accelerator pedal brie0y and
/rml y.
The functions of Active Distance Assist
DISTRONIC continue tobe car ried out.
Deactiv
Deactiv ating A
ating Activ
ctive Dist
e Dist ance Assis
ance Assist DIS t DISTR
TRONIC
ONIC Driving and parking
235
235

de
tected bythe system. The maximum permissi-
ble speed applying toave hicle with a trailer is not
de tected bythe system.
Ad just the speed in these situations. &
W
WARNING
ARNING Risk of accident due toActive
Speed Limit Assist ada pting theve hicle's
speed
The speed adop tedby Active Speed Limit
Assist may be too high or incor rect in some
individual cases, such as:
R at speed limits below 20 km/h
R inwe t conditions or in fog
R when towing a trailer #
Ensure that the driven speed complies
with tra1c regulations. #
Adjust the driving speed tosuit cur rent
tra1c and weather conditions. F F
unction of r
unction of r out
oute-based speed adapt
e-based speed adapt ation
ation
When Active Distance Assist DISTRONIC is acti va-
te d, theve hicle speed will be adap ted accordingly
to thero ute events ahead. Depending on the drive prog
ram selected, theve hicle neg otiates a route
ev ent ahead in an economical, comfor table or
dynamic manner. When thero ute event has been
passed, theve hicle accelerates again tothe
stored speed. The set distance totheve hicle in
front, vehicles de tected ahead and speed restric-
tions ahead are take n into account.
Yo u can activate and deactivate route-based
speed adap tation in the multimedia system
(/ page 238).
The following route events are take n into account:
R Bends
R T-junctions, roundabouts and toll stations
R Turns and exits
R Tra1c jams ahead (only with Live Tra1c Infor-
mation )
% When theto ll station is reached, Active Dis-
ta nce Assist DISTRONIC ado ptsth e speed as
th e stored speed.
Also, the speed is reduced if the turn signal indi-
cator tochange lanes is switched on and one of
th efo llowing situations is de tected:
R Turning o. at junctions R
Driving on slowing-down lanes
R Driving on lanes adjacent toslowing-down
lanes
The driver is responsible forch oosing theright
speed and observing other road users. This
applies in particular tojunctions, roundabouts and
tra1c lights, as route-based speed adap tation
does not brake theve hicle toa standstill.
When route guidance is active, the /rst speed
adjustment is car ried out automaticall y.Ifth e turn
signal indicator is switched on, the selected route
is con/rmed and fur ther speed adjustment is acti-
va ted.
Speed adap tation is cancelled in thefo llowing
cases:
R Ifth e turn signal indicator is switched o.
before thero ute event.
R Ifth e driver depresses the accelerator or
brake pedal during the process.
Syst
Syst em limits em limits
Ro ute-based speed adap tation does not take right
of wa yre gulations into account. The driver is Driving and parking
237
237

S
S
t
tatus displa
atus displa y of A
y of Activ
ctiveSt
e St eer
eer ing Assis
ing Assist in t t in the
he
Ins
Instr trument Display
ument Display
R Ø (gre y): acti vated and passive
R Ø (gre en): activated and active
R Ø (red): system limits de tected
R Ø (white, red hands): "hands on the steer-
ing wheel" prom pt
% During the transition from active topassive
status, theØ symbol is shown as enlar ged
and 0ashing. Once the system is passive, the
Ø symbol is shown as grey inthe Instru-
ment Displa y.
% Depending on the selected vehicle settings,
Ac tive Steering Assist may be una vailable.
St
St eer
eer ing and t
ing and t ouc
ouch det
h det ection
ection
The driver is requ ired tokeep their hands on the
stee ring wheel at all times and be able tointer-
ve ne at any time tocor rect the course of theve hi-
cle and keep it in lane. The driver must expect a
ch ange from active topassive mode or vice versa
at any time. If
th e system de tects that the driver has not
steered theve hicle for a considerable period of
time or has remo vedth eir hands from the steering
wheel, display 1appears. If the driver still does
not steer theve hicle, a warning tone sounds in
addition tothe visual warning message.
If th e driver does not react tothewa rning for a
considerable period, the system can initiate an
emer gency stop (/ page 240).
The warning is not issued or is stopped when the
driver gives con/ rmation tothe system:
R The driver steers theve hicle. R
Depending on t
Depending on t he country
he country:
:th e driver presses
a steering wheel button or operates Touch
Control
If Ac tive Steering Assist de tects that a system
limit has been reached, a visual warning is issued
and a warning tone sounds.
Obser vethe no tes on driving systems and your
re sponsibility; you may otherwise failto recognise
dangers (/ page 219).
Syst
Syst em limits
em limits
Ac tive Steering Assist has a limited steering tor-
qu efo r lateral guidance. In some cases, the steer-
ing inter vention is not su1cient tokeep theve hi-
cle in the lane or todrive thro ugh exits.
The system may be impaired or may not function
in thefo llowing instances:
R There is poor visibility, e.g. due tosno w,rain,
fo g, heavy spr ay,gr eatly varying light condi-
tions or strong shadow s onthe car riag ewa y.
R There is glare, e.g. from oncoming tra1c,
di re ct sunlight or re0ections.
R Insu1cient road illumination. Driving and parking
239 239