2021 MERCEDES-BENZ A-CLASS SALOON door lock

#
When leaving theve hicle, alw aysta ke the
ke y with you and lock theve hicle. #
Keep theve hicle key out of there ach of
ch ildren. V
V
ehicles wit
ehicles wit h manual tr
h manual tr ansmission:
ansmission:
The electr
The electr ic par
ic parking br
king br ak
ake is applied if t
e is applied if t he v
he vehicle
ehicle
is br
is br ought t
ought t o a st
o a stands
andstill and one of ttill and one of t he f
he follo
ollowing
wing
conditions is
conditions is ful/lled:
ful/lled:
R The vehicle has pr eviously been driven at
speeds greater than 3 km/h.
R The vehicle is switched o..
R The driver's door is opened.
% Toprev ent application: pull the handle of the
electric parking brake (/ page 211).
In t
In t he f
he f ollo
ollowing situations, t
wing situations, t he electr
he electric par
ic parking
king
br
br ak
ak e is also applied:
e is also applied:
R The HOLD function is keeping theve hicle sta-
tionar y.
R In addition, one of t
In addition, one of t he f
he follo
ollowing conditions
wing conditions
mus
mus t be
t be ful/lled:
ful/lled:
- The vehicle is switched o.. -
The seat belt tongue is not inse rted in the
seat belt buckle of the driver's seat and
th e driver's door is opened.
- There is a system malfunction.
- The po wer supply is insu1cient.
- The vehicle is stationary for a lengt hy
period.
When the electric parking brake is applied, the
re d! indicator lamp lights up in the inst ru-
ment cluster.
If th e electric parking brake is not applied when
th e driver's door is opened, theRisk of vehicle
rolling away Apply parking brake See Owner's
Manual message appears.
% The electric parking brake is not automatically
applied if theve hicle is switched o. bythe
ECO start/s top function.
V
V ehicles wit ehicles wit h aut
h automatic tr
omatic tr ansmission:
ansmission:
The electr
The electr ic par
ic parking br
king br ak
ake is applied if t
e is applied if t he tr
he trans-
ans-
mission is in position
mission is in position j
jand one of t
and one of t he f
he follo
ollowing
wing
conditions is
conditions is ful/lled:
ful/lled:
R The vehicle is switched o.. R
The seat belt tongue is not inse rted in the seat
belt buckle of the driver's seat and the driver's
door is opened.
% Toprev ent application: pull the handle of the
electric parking brake (/ page 211).
In t
In t he f
he f ollo
ollowing situations, t
wing situations, t he electr
he electric par
ic parking
king
br
br ak
ak e is also applied:
e is also applied:
R The HOLD function is keeping theve hicle sta-
tionar y.
R Active Parking Assist is keeping theve hicle
stationar y.
R Active Distance Assist DISTRONIC is bringing
th eve hicle toa standstill.
R In addition, one of t
In addition, one of t he f
he follo
ollowing conditions
wing conditions
mus
mus t be
t be ful/lled:
ful/lled:
- The vehicle is switched o..
- The seat belt tongue is not inse rted in the
seat belt buckle of the driver's seat and
th e driver's door is opened.
- There is a system malfunction.
- The po wer supply is insu1cient. 210
210
Driving and parking

R
V
Vehicles wit
ehicles wit h aut
h automatic tr
omatic tr ansmission:
ansmission: the
transmission is shiTed toposition j.
R The vehicle is secured with the electric par k-
ing brake.
In thefo llowing situations, theve hicle is held by
transmission position jand/or bythe electric
parking brake:
R The seat belt is unfastened and the driver's
door is opened.
R The vehicle is switched o..
R There is a system malfunction.
R The po wer supply is insu1cient.
V
V ehicles wit ehicles wit h manual tr
h manual tr ansmission
ansmission
The Brake immediately message may also appear
in the Instrument Displa y:#
Immediately depress the brake pedal /rmly
until thewa rning message disappears.
The HOLD function is deactivated.
A horn sounds at regular inter vals if, despite the
Brake immediately message,you switch o. the
ve hicle, remo veyour seat belt and open the driv-
er's door. If you attem pttolock theve hicle, the horn
tone becomes louder. The vehicle cann otbe
loc ked until you ha vedeactivated the HOLD func-
tion.
% Once you ha veswitched o. theve hicle, you
cannot restart it until you ha vedeactivated
th e HOLD function. F
F
unction of Hill St
unction of Hill Star
art Assist
t Assist Hill
Start Assist holds theve hicle for a short time
when pulling away on a hill under thefo llowing
conditions:
R V
Vehicles wit
ehicles wit h aut
h automatic tr
omatic tr ansmission:
ansmission: the
transmission is in position hork.
R The electric parking brake is released.
This gives you enough time tomo veyour foot
from the brake pedal tothe accelerator pedal and
depress it before theve hicle begins torollaw ay. &
W
WARNI NG
ARNI NGRisk of accident and injury due
to theve hicle rolling away
ATer a sho rttime, Hill Start Assist no lon ger
holds theve hicle. #
SwiTly mo veyour foot from the brake
pedal tothe accelerator pedal. Do not
lea vetheve hicle when it is being held by
Hill Start Assist. F
F
unction of A
unction of A dap
daptiv
tive Br
e Br ak
ake Lights
e Lights Ad
aptive Brake Lights warnfollowing tra1c in an
emer gency braking situation with thefo llowing
actions:
R By 0ashing the brake lamps
R By activating the hazard warning lights
If th eve hicle is braked sharply from speeds abo ve
50 km/h, the brake lamps 0ash rapidl y.This pro-
vides tra1c tr avelling behind you with an even
more noticeable warning.
If th eve hicle is tr avelling at speeds of more than
70 km/h at the beginning of the brake applica-
tion, the hazard warning lights switch on once the
ve hicle is stationar y.When you pull away again,
th e hazard warning lights will switch o. automati-
cally at appr oximately 10 km/h. You can also 220
220
Driving and parking

#
Information on the permissible gross mass of
th eve hicle can be found on theve hicle identi-
/cation plate (/ page 384). #
V
Vehicles wit
ehicles wit h aut
h automatic tr
omatic tr ansmission:
ansmission: do not
open the driver's door or front passenger
door; the transmission otherwise automati-
cally shiTs toposition j. #
Fitth eto wing eye (/ page 359). #
Fasten theto wing device.
* N
NOOTE
TE Damage due toincor rect connec-
tion of theto w bar #
Only connect theto w rope or tow bar to
th eto wing eyes. #
Deactivate the automatic locking mechanism
(/ page 88). #
Do not activate the HOLD function. #
Deactivate tow- awa y protection
(/ page 102). #
Deactivate Active Brake Assist (/ page 239).#
V
Vehicles wit
ehicles wit h aut
h automatic tr
omatic tr ansmission:
ansmission: shiTto
position i. #
V
Vehicles wit
ehicles wit h manual tr
h manual tr ansmission:
ansmission: shiTto
neutral i. #
Release the electric parking brake. #
Switch on theve hicle; the steering wheel loc k-
ing may otherwise engage. &
W
WARNING
ARNING Risk of accident due tolimited
saf ety-re lated functions during theto wing
process
Saf ety-re lated functions are limited or no lon-
ge rav ailable in thefo llowing situations:
R theve hicle is switched o..
R the brake system or po wer steering system
is malfunctioning.
R the energy supply or the on-board electri-
cal system is malfunctioning.
When your vehicle is towe daw ay, signi/cantly
more e.ort may be requ ired tosteer and
brake than is normally requ ired. #
Use a tow bar. #
Make sure that the steering wheel can
mo vefreely be fore towing theve hicle
awa y. *
N
NO
OTE
TE Damage due toexcessive tractive
po wer If
yo u pull away sharpl y,the tractive po wer
may be too high and theve hicles could be
damaged. #
Pull away slo wlyand smoo thly. Loading t
Loading t
he v
he vehicle f
ehicle f or tr
or transport
anspo rt Hybr
Hybr
id v
id vehicles:
ehicles: transpor tation of vehicles should
only be car ried out byprofessional reco very com-
panies. #
Obser vethe no tes on towing away
( / page 356). #
Connect theto wing device totheto wing eye
in order toload theve hicle.
% You can also attach theto w bar tothe trailer
hitch. Breakdown assistance
357
357

Displa
Displa
y messag
y messag es P
es Possible causes/conseq
ossible causes/consequences and uences andM
MSolutions
Solutions #
Check the conditions for automatic release of the electric parking brake. #
Release the electric parking brake manuall y.
!
Turn on the ignition to
release the parking brake *T
hered! indicator lamp is lit.
Yo u ha veattem pted torelease the electric parking brake with theve hicle switched o.. #
Switch on theve hicle.
Risk of vehicle rolling away
Parking brake not applied
See Owner's Manual *V
Vehicles wit ehicles wit h manual tr
h manual tr ansmission:
ansmission: the electric parking brake has not been applied and you open the driver's door. #
Apply the electric parking brake.
J
Brake immediately *V
Vehicles wit
ehicles wit h manual tr
h manual tr ansmission:
ansmission: a malfunction has occur red while the HOLD function was activated.
A horn may also sound at regular inter vals. If you attem pttolock theve hicle, the horn will become louder.
Yo u cannot start theve hicle system. #
Immediately depress the brake pedal /rmly until the display message disappears.
Yo u cannot start theve hicle system again. 438
438
Displ
aymessages and warning/indicator lamps

A
A
ctiv
ctiv e P
e P ar
ar king Assist
king Assist
Exiting a parking space.......................... 262
Fu nction................................................ 259
Pa rking.................................................. 260
System limitations..................................2 59
A
A ctiv
ctiv e Ser
e Ser vice Sy
vice Sy st
stem PL
em PL US
US
see ASS YST PLUS
A A ctiv ctiv e Speed Limit Assist
e Speed Limit Assist
Display................................................... 230
Fu nction................................................ 230
A
A ctiv
ctiv eSt
e St eer
eer ing Assist
ing Assist
Ac tivating/deactivating.......................... 234
Ac tive Emer gency Stop Assist................ 234
Fu nction................................................ 232
System limits......................................... 232
A
A dap
dap tiv
tive br
e br ak
ake lights
e lights .................................... 220
A
A dap
dap tiv
tive cr
e cr uise contr
uise contr ol
ol
see Active Distance Assist DISTRONIC
A
A dap
dap tiv
tive Highbeam Assist
e Highbeam Assist
Ac tivating/deactivating.......................... 136
Fu nction................................................ 135
A
A dap
dap tiv
tive Highbeam Assis
e Highbeam Assist Plus t Plus
Fu nction................................................ 136
Switching on/o..................................... 137 A
A dBlue
dBlue ®
®
Ad ditives................................................ 390
Capacity................................................ 391
No tes..................................................... 186
Purit y.................................................... .390
To pping up............................................ .186
A
A dditional door lock
dditional door lock ....................................... 86
A A dditiv
dditiv es
es
Ad Blue ®
................................................ .390
Engine oil............................................... 391
Fu el....................................................... 388
A A dditiv dditiv es (A
es (AdBlue
dBlue ®
®
)
)
see AdBlue ®
A
A dditiv
dditiv es (engine oil)
es (engine oil)
see Additives
A
A dditiv
dditiv es (fuel)
es (fuel)
see Fuel
A
A djus
djus ting t
ting t he headlam
he headlam p r
p range
ange ...................... 131
ATer
ATer -sales
-sales ser
service
vice
see ASS YST PLUS
Air conditioning menu
Air conditioning menu Calling up.............................................. 148 Air dis
Air distr
tribution
ibution
Setting................................................... 147
Setting (MBUX multimedia system)......... 149
Air inlet Air inlet see Air-water duct
Air pr
Air pr essure
essure
see Tyre pressure
Air v
Air v ents
ents
Ad justing (front)..................................... 154
Ad justing (rear)...................................... 155
Air v
Air v ents
ents
see Air vents
Air
Air -conditioning syst
-conditioning syst em
em
see Climate cont rol
Air
Air -r
-recir
ecir culation mode (wit
culation mode (wit h
h/ne
/ne
par
par ticle
ticle pr
pre/lt
e/lt er)
er).......................................... 149
Air
Air -w
-wat
ater duct
er duct
Ke eping free.......................................... 331
Airbag
Airbag Activation................................................ 47
Fr ont airbag (driver, front passenger)........ 52
Installation locations................................ 52
Knee airbag............................................. 52 Index
485
485

Overview.................................................
.52
PA SSENGER AIR BAG indicator la mps...... 57
Pr otection................................................ 53
Re duced pr otection.................................. 55
Side airbag.............................................. 52
Wi ndow airbag......................................... 52
Air0 ow
Air0ow
Setting................................................... 147
Alar Alar m syst m syst em
em
see ATA (anti-theT alarm system)
All-wheel dr
All-wheel dr ive
ive
see 4M ATIC
Ambient lighting
Ambient lighting Setting (MBUX multimedia system)........ .138
Andr
Andr oid A
oid A uto
uto
see Smartphone integ ration
Animals
Animals Pets in theve hicle.................................... 80
Anti-loc
Anti-loc k br
k braking syst
aking syst em
em
see ABS (Anti-lock Braking System)
Anti-skid c
Anti-skid c hains
hains
see Sn owchains Anti-t
Anti-theT
heTprot
pr otection
ection
Ad ditional door loc k................................. 86
Immobiliser............................................ 101
Anti-t
Anti-theT heTprot
pr otection
ection
see ATA (anti-theT alarm system)
Anticipat
Anticipat or
ory occupant pr ot
y occupant pr otection
ection
see PRE-SAFE ®
(anticipatory occu-
pant pr otection)
see PRE-SAFE ®
PLUS (anticipatory
occupant pr otection plus)
Apple CarPlay
Apple CarPlay ®
®
see Smartphone integ ration
Assist Assist ance syst ance syst ems
ems
see Driving saf ety sy stem
ASS YS
ASS YST PL
T PL US
US
Battery disconnection period s................ 325
Displaying the service due dat e.............. 324
Fu nction/no tes...................................... 324
Re gular maintenance work..................... 324
Special service requ irements................. 324
AT
ATA A(anti-t
(anti-theT heTalar
alarm syst
m syst em)
em)
Deactivating the alarm........................... 102
Fu nction................................................ 101
Interior pr otection function.....................1 03Priming/deactivating interior pr
otec-
tion........................................................ 103
Priming/deactivating tow- awa y pro-
te ction................................................... 102
To w- awa y protection function................. 102
A
A TTENTION ASSIST TTENTION ASSIST
Function................................................ 221
Setting.................................................. .223
System limitations.................................. 221
A A tt tt ention assist
ention assist ant
ant
see ATTENTION ASSIST
A
A ut
ut hor
hor ised w
ised w ork
orkshop
shop
see Quali/ed specialist workshop
A
A ut
ut omatic car w
omatic car w ash mode
ash mode
Ac tivating............................................... 333
A
A ut
ut omatic co-dr
omatic co-dr iv
iver airbag
er airbag shut
shuto.
o.
Fu nction of co-driver airbag shuto........... 56
A
A ut
ut omatic dist
omatic dist ance contr
ance control
ol
see Active Distance Assist DISTRONIC
A
A ut
ut omatic dr
omatic dr iving lights
iving lights ................................ 131
A
A ut
ut omatic engine st
omatic engine st art
art
see ECO start/stop function 486
486
Index

Car
Car
pe
pet (Car
t (Car e)
e)............................................... 337
Changing bulbs
Changing bulbs Dipped beam.........................................1 41
Fi tting/removing co ver (front wheel
ar ch )...................................................... 140
Main beam............................................. 141
No tes..................................................... 139
Overview................................................ 140
Re versing lights......................................1 41
Tu rn signal lights (rear)........................... 141
Changing g
Changing g ears ears
Manually................................................ 179
Changing hub caps
Changing hub caps ....................................... 373
Char
Char ging
ging
Char geleve l displa y............................... 205
Charg ing cable control panel.................. 194
Ending thech arging process (alternat-
ing cur rent, mode 2/3).......................... 200
Ending thech arging process (direct
cur rent, mode 4).................................... 204
Indica tor lamps on vehicle soc ket........... 195
No tes - charging station (mode 3)......... .191
No tes - fast charging station (mode 4)... .193
No tes - mains soc ket (Mode 2)............... 190 No
tes - wallbox (mode 3)........................ 191
No tes on charging the high-voltage
battery................................................... 188
On-board electrical system battery
(12 V).................................................... 352
Setting the maximum possible charg-
ing cur rent (mains soc ket)...................... 193
St arting thech arging process (alter-
nating cur rent, mode 2/3)..................... 197
St arting thech arging process (direct
cur rent, mode 4).................................... 201
St ow ing thech arging cable.................... 188
USB port............................................... .126
Char
Char ging cable ging cable
Control panel......................................... 194
St ow ing................................................. 188
Child safe
Child safe ty lock ty lock
Re ar door................................................ .79
Re ar side wind ows................................... 80
Child seat
Child seat Appr oval catego ries.................................66
At tach ing (no tes)..................................... .66
Basic instructions.................................... 61
Fr ont passenger seat (no tes).................... 76 Fr
ont passenger seat (without auto-
matic airbag shuto.)............................... .76
ISOFIX/i-Size (/tting).............................. .70
No tes on risks and danger s...................... 62
Re commendations forch ild restraint
systems................................................... 65
Seats suitable for belt-secured child
re straint systems..................................... 73
Seats suitable for i‑Size child restraint
systems................................................... 69
Seats suitable for ISOFIX child
re straint systems..................................... 68
Securing on the co-driver seat..................77
Securing on there ar seat......................... 75
To pTe ther................................................ 72
Childr
Childr en
en
Av oiding dangers in theve hicle............... .62
Basic instructions.................................... 61
Chock Chock Storage location..................................... 372
Chock Chock see Chock
City lighting
City lighting.................................................. 134 Index
489
489

Displa
Displa
y messag
y messag es
es
ç - - - km/h..................................... 441
È - - - km/h..................................... 441
h - - - km/h..................................... 440
# 12 V battery See Owner's Man-
ual......................................................... 456
ò Acoustic presence indicator
inoperative............................................ .415
: Active Light System inoperative..... 409
¯ AdBlue system fault Emer. op.:
max. XXX km/h Start not poss. in
XXX km.................................................. 465
¯ AdBlue system fault Emer gency
op. in XXX miles See Owner's Manual.... 464
¯ AdBlue system fault Engine
start not possible................................... 465
¯ AdBlue system fault See Own-
er's Manual............................................ 464
5 Add 1 litre engine oil when next
re fuelling ............................................... 466 é
ATTENTION ASSIST inoperati ve..... 440
é ATTENTION ASSIS T:Take a
break!.................................................... 440
: Automatic driving lights inoper-
ative...................................................... 409
Û Battery overheated Stop, every-
body out! Outdoors if possible ................ 417
û Before starting the engine, turn
th e steering wheel.................................. 424
J Brake immediately ........................ 438
Á Change key batteries .................... 406
è Charger cable connected .............. 415
J Check brake 0uid le vel.................. 439
ï Check trailer hitch lock (white
display message) .................................... 421
h Check tyre(s) ................................ 459
! Clean the fuel /lter....................... 429
ÿ Coolant Stop vehicle Switch
engine o............................................... 428 !
currently una vailable See Own-
er's Manual............................................4 51
÷ currently una vailable See Own-
er's Manual............................................4 52
5 Engine oil le vel cannot be meas-
ured....................................................... 467
5 Engine oil le velRe duce oil le vel..... 466
5 Engine oil le velSt op vehicle
Switch engine o.................................... 466
5 Engine oil pressure Stop Switch
o. engine.............................................. 467
ä Fault Drive at max. 80 km/h ......... 450
6 Front leT malfunction Consult
wo rkshop (e xample)...............................4 03
& inoperative Battery low................. 412
& inoperative Char geHV battery...... 413
& inoperati veHigh-voltage battery
ch arging inco mplete ............................... 413
& inoperative Refuel vehicle............. .413
& inoperative See Owner's Man........ 412 492 492
Index