engine MERCEDES-BENZ A-CLASS HATCHBACK 2021 Owners Manual

Changing bulbs (only
forve hicles with hal-
ogen headlamps) ......................................... 143
Wi ndsc reen wipers and windscreen
wa sher system ............................................ 145
Mir rors ........................................................ 149 Climat
Climat
e contr
e control ol........................................... 153 153
Overview of climate control systems ............ 153
Operating the climate control system .......... 154 Dr
Dr
iving and par
iving and par king
king..................................... 162 162
Driving ........................................................1 62
DY NAMIC SELECT switch ........................... .178
Manual transmission ................................... 181
Au tomatic transmission .............................. .183
Fu nction of the 4MATIC ...............................1 87
Re fuelling .................................................... 188
Charging the high-voltage battery (plug-in
hy brid) ........................................................ 194
Pa rking .......................................................2 11
Driving and driving saf ety sy stems ............... 219
Tr ailer hitch ................................................ .270
Bicycle rack function ................................... 274
Ve hicle towing instructions .......................... 276 Ins
Ins
tr
trument displa
ument displa y and on-boar
y and on-boar d com-
d com-
put
put er
er........................................................... 277 277
No tes on the inst rument display and on-
board computer .......................................... 277
Overview of instrument display .................... 278
Overview of buttons on the steering wheel ... 279
Operating the on-board computer ................2 79
Fu nction of the po wer me ter (plug-in
hy brid) ........................................................ 281
Fu nction of the electric mo tor po wer
av ailability displ ay(plug-in hybrid) ................ 281
Displaying the po wer me ter (plug-in
hy brid) ........................................................ 282
Overview of displa ysinthe inst rument
display ........................................................ 282
Head-up display .......................................... 282 MBUX multimedia syst MBUX multimedia syst
em
em........................... .285
285
Overview and operation ............................... 285
System settings .......................................... 294
Plug-in hybrid settings ................................ .298
Na vigation .................................................. .299
Te lephone ................................................... 308
Mercedes me app ....................................... 311 Mercedes-Benz emer
gency call system ....... 320
Ra dio & media ............................................ .324
Sound settings ............................................ 329 Maint Maint
enance and car
enance and car e
e................................. 330 330
ASS YST PLUS service inter val display .......... 330
Engine compartment ................................... 331
Cleaning and care ....................................... 337 Br Br
eakdo
eakdo wn assist
wn assist ance
ance................................. 346 346
Emer gency .................................................. 346
Flat tyre ...................................................... 348
Battery (vehicle) .......................................... 354
To w- starting or towing away ........................ 358
Electrical fuses ............................................ 364 Wheels and tyr Wheels and tyr
es
es......................................... 368 368
No tes on noise or unusual handling char-
acteristics ................................................... 368
No tes on regula rly inspecting wheels and
tyres .......................................................... .368
No tes on snow chains ................................. 368
Ty re pressure .............................................. 369 Contents
3 3

Wheel
change ............................................. 373
Emer gency spa rewheel .............................. .383
Collapsible spare wheel ............................... 386 T
T
ec
ec hnical dat
hnical dat a
a............................................. 389 389
No tes on tech nical data .............................. 389
On-board electronics ................................... 389
Re gula tory radio identi/cation and no tes ..... 391
Ve hicle identi/cation plate, VIN and
engine number overview .............................. 392
Operating 0uids ...........................................3 93
Ve hicle data ................................................ 403
Tr ailer hitch ................................................ .405 Displa Displa
y messag
y messag es and w
es and war
arning/indicat
ning/indicat or
or
lam
lam ps
ps.......................................................... 409 409
Display message s ....................................... .409
Wa rning and indicator lamps ....................... 476 Inde
Inde
x
x.......................................................... 492 4924
4
Contents

1
! ABS →
488
2 #! Turn signal lights →
136
3 h Tyre pressure monitoring system →
490
4 # Electrical fault →
481
5 L Distance warning →
487
6 J Brakes (yellow) →
485
7 J Brakes (red) →
485
8 ! Electric parking brake (yellow) →
485
9 ! Electric parking brake (red) →
485
A % Diesel engine: preglow
B ; Engine diagnostics →
481
C R Rear fog light →
135 D
K High beam →
136
L Low beam →
134
T Standing lights →
134
E å ESP®
OFF →
488
÷ ESP®
→
488
F 6 Restraint system →
477
G Fuel le vel →
278
H æ Reser vefuel wi thfuel /ller 0ap location
indicator →
481
I Ù Powe r steering →
480
J ü Seat belt →
477
K ï Trailer hitch →
480 At
a glance – Indicator and warning lamps (standard)
13
13

1
#! Turn signal lights →
136
2 ï Trailer hitch →
480
3 6 Restraint system →
477
4 å ESP®
OFF →
488
÷ ESP®
→
488
5 R Rear fog light →
135
6 K High beam →
136
L Low beam →
134
T Standing lights →
134
7 ÿ Coolant temp erature →
481
8 Coolant temp erature display →
278
9 ! Electric parking brake (yellow) →
485
A J Brakes (yellow) →
485
B # Electrical fault →
481 C
L Distance warning →
487
D ! ABS →
488
E Ù Powe r steering →
480
F h Tyre pressure monitoring system →
490
G % Diesel engine: preglow
H æ Reser vefuel wi thfuel /ller 0ap location
indicator →
481
I Fuel le vel →
278
J ! Electric parking brake (red) →
485
K ü Seat belt →
477
L J Brakes (red) →
485
M ; Engine diagnostics →
481
N ä Indicator lamp inoperative At
a glance – Indicator and warning lamps (widescreen cockpit)
15
15

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

*
N
NO
OTE
TE Damage totheve hicle due todriv-
ing toofast and due toimpacts tothe
ve hicle underbody or suspension compo-
nents In
thefo llowing situations, in particular, there
is a risk of damage totheve hicle:
R theve hicle becomes grounded, e.g. on a
high kerb or an unpa vedro ad
R theve hicle is driven toofast ove r an obsta-
cle, e.g. a kerb, speed bump or po thole
R a heavy object st rike sth e underbody or
suspension components
In situations such as these, damage tothe
body, underbody, suspension components,
wheels or tyres may not be visible. Compo-
nents damaged in this wa y can un expectedly
fa il or, in the case of an accident, may no lon-
ge r absorb there sulting forc e as intended.
If th e underbody panelling is damaged, 0am-
mable materials such as lea ves, grass or twigs
can collect between the underbody and the
underbody panelling. These materials may ignite if
they come into contact with hot parts
of theex haust system. #
Have theve hicle checked and repaired
immediately at a quali/ed specialist
wo rkshop.
or #
If driving saf ety is impaired while con-
tinuing your journe y,pull over and stop
th eve hicle immediatel y,while paying
attention toroad and tra1c conditions,
and contact a quali/ed specialist work-
shop. Plug-in h Plug-in h
ybr
ybr id
id
Hybrid vehicles ha vea combustion engine and an
elect ric mo tor.The energy supply for operating
th eve hicle elect rically is pr ovided bythe high-
vo ltage on-board electrical system. &
D
DAN
AN GER
GER Risk of death and /re due to
modi/ed and/or damaged components of
th e high-voltage on-board electrical sys-
tem
The vehicle's high- voltage on-board electrical
system is under high voltage. If you modify
component parts in theve hicle's high- voltage
on-board electrical system or touch damaged
component parts, you may be electrocuted. In
addition, modi/ed and/or damaged compo-
nents may cause a /re.
In theeve nt of an accident or impact tothe
ve hicle underbod y,components of the high-
vo ltage electrical system may be damaged
although the damage is not visible. #
Never make any modi/cations tothe
high- voltage on-board electrical system. #
Do not switch on or use theve hicle if its
high- voltage on-board electrical system
components ha vebeen modi/ed or dam-
aged. 28 28
General no
tes

#
Neverto uch damaged components of
th e high-voltage on-board electrical sys-
te m. #
ATer an accident, do not touch any com-
ponents of the high-voltage on-board
electrical system. #
ATer an accident, ha vetheve hicle trans-
por tedawa y. #
Have the components of the high-voltage
on-board electrical system checked at a
qu ali/ed specialist workshop and
re placed if necessar y. The components of
the high-voltage on-board
electrical system are mar ked with yellow warning
stic kers. The cables of the high-voltage on-board
electrical system are orange.
Ve hicles with hybrid systems generate signi/-
cant lyless noise when stationary and when being
driven than vehicles with combustion engines.
When driving in elect ric mode, theve hicle may
not be heard by otherroad users due tothe signif-
icantly reduced noise generated. It is
forth is reason that theve hicle is equipped
with a sound generator, which ser ves as an acous-
tic vehicle alerting system (A VAS). Declar
Declar
ations of conf
ations of conf or
ormity and not
mity and not es on dr
es on driving
iving
in
in di.er
di.er ent
entcountr
countr ies
ies Electr
Electr
omagne
omagne tic com
tic compatibility
patibility The elect
romagnetic compatibility of theve hicle
components has been checked and certi/ed
according tothe cur rently valid version of Regula-
tion UN-R 10. v
v
ehicle inst
ehicle inst alled r
alled radio com
adio com ponents
ponents Onl
Onl
y f
y for EU and EFT
or EU and EFT A countr
A countries and countr
ies and countr ies t
ies that
hat
r
r ecognise t
ecognise t he EU manuf
he EU manuf actur
acturer's declar
er's declar ation of
ation of
conf
conf or
ormity:
mity: The
following information applies toall wireless
components of theve hicle and of the information systems and communication devices integ
rated in
th eve hicle:
The manu facturers of the wireless components
ensure that all wireless components ins talled in
th eve hicle comply with Directi ve2014/53/EU.
The full texts of the EU declarations of conformity
are available at thefo llowing web address:
https://moba.i.daimler.com/mar kets/ece-r ow/
baix/cars/certi/cates-of-con form ity/en_GB/
index.html General no
tes
29
29

Manufacturer:
BRANO a.s.
747 41 Hradec nad Mor
avicí, Opavská 1000,
The Czech Republic
ID No.: 64-387-5933
VA T No.: CZ64-387-5933
her ewith declares under our sole responsibility
th at the product:
2. a)
Na me:
Jack
Ty pe, Number:
A) A 164 580 02 18, A 166 580 01 18
B) A 240 580 00 18
C) A 639 580 02 18
D) A 639 580 03 18
E) A 910 580 00 00
F) A 247 580 00 00, A 293 580 00 00
Ye ar of manu facture: 2020
Complies with all releva nt pr ovisions Directive No. 2006/42/EC
b)
Description and purpose of use:
Car jack is intended solely
for liTing of the con-
cr ete car, in accordance with the inst ruction label
on the car jac k.
3.
Re fere nces of ha rmonized and other standards or
speci/cations
ISO 4063, EN ISO 14341- A,AS 2693, DBL
8230.10, DBL 7382.20, DBL 7392.10, DBL
8451.15, MBN 10435,
Te ch nical documentation of the product is stored
at the premise of the manufacturer. The person
re sponsible for assembling thete ch nical docu-
mentation of the product: Head of theTe ch nical
Department Brano a.s.
4.
Hradec nad Mor avicí
Place
5.
05.10.2020 Date
Engineer
PetrPe tr
[Signature]
Director of division ZZ TIREFIT kit TIREFIT kit
Met
Met
hod 1
hod 1 Copy and translation of
the original declaration of
conformity:
EC declar EC declar ation of conf
ation of conf or
ormity
mity , CE
, CE
We,
Aircom Automotive Sp. z o.o. Sp. k.
ul. Fabryc zna 20B
55-080 Pietrzyk owice
Po land (1)
hereby declare that the product
Electric air pump (2)
Models: (3) General no
tes
37 37

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

#
T To unloc o unloc k:
k:turn the emer gency key anti-cloc k-
wise toposition 1. #
T
To loc
o loc k:
k:turn the emer gency key clockwise to
position 1. #
Carefully press the co ver onto the lock cylin-
der until it engages and is seated /rml y.Loc
Loc
king t
king t he fr
he front passeng
ont passeng er door and r
er door and r ear doors
ear doors #
Insert a suitable object, e.g. the emer gency
ke y,into opening 1onthe door loc k. #
T
T o loc
o loc k t
k the
he leT-hand
leT-hand side of t
side of the v
he vehicle:
ehicle: turn
th e emer gency key anti-clockwise as far as it
will go. #
T
To loc
o loc k t
k the r
he r ight-hand side of t
ight-hand side of t he v
he vehicle:
ehicle: turn
th e emer gency key clockwise as far as it will
go.
If th e loc ked door is then closed, it can no longer
be opened from the outside. Load com
Load com
par
partment
tment Opening t
Opening t
he t
he tailg
ailgate
ate &
D
DAN
AN GER
GER Risk of poisoning from exhaust
ga ses
Combustion engines emit poisonous exhaust
ga ses, such as carbon monoxide. Exhaust
ga ses can enter theve hicle interior if theta il-
ga te is open when theve hicle is running,
especially if theve hicle is in motion. #
Always switch o. theve hicle before
opening theta ilgate. #
Never drive with theta ilgate open. 90
90
Opening and closing