2021 MERCEDES-BENZ A-CLASS HATCHBACK light

A
A
ctiv
ctiv e P
e P ar
ar king Assist
king Assist
Exiting a parking space.......................... 268
Fu nction................................................ 265
Pa rking.................................................. 266
System limitations..................................2 65
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................................................... 236
Fu nction................................................ 236
A
A ctiv
ctiv eSt
e St eer
eer ing Assist
ing Assist
Ac tivating/deactivating.......................... 240
Ac tive Emer gency Stop Assist................ 240
Fu nction................................................ 238
System limits......................................... 238
A
A dap
dap tiv
tive br
e br ak
ake lights
e lights .................................... 226
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.......................... 140
Fu nction................................................ 139
A
A dap
dap tiv
tive Highbeam Assis
e Highbeam Assist Plus t Plus
Fu nction................................................ 140
Switching on/o..................................... 141 A
A dBlue
dBlue ®
®
Ad ditives................................................ 398
Capacity................................................ 399
No tes..................................................... 192
Purit y.................................................... .398
To pping up............................................ .192
A
A dditional door lock
dditional door lock ....................................... 86
A A dditiv
dditiv es
es
Ad Blue ®
................................................ .398
Engine oil............................................... 399
Fu el....................................................... 396
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 ...................... 135
ATer
ATer -sales
-sales ser
service
vice
see ASS YST PLUS
Air conditioning menu
Air conditioning menu Calling up.............................................. 154 Air dis
Air distr
tribution
ibution
Setting................................................... 153
Setting (MBUX multimedia system)......... 155
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)..................................... 160
Ad justing (rear)...................................... 161
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).......................................... 155
Air
Air -w
-wat
ater duct
er duct
Ke eping free.......................................... 337
Airbag
Airbag Activation................................................ 47
Fr ont airbag (driver, front passenger)........ 53
Installation locations................................ 53
Knee airbag............................................. 53 Index
493
493

Overview.................................................
.53
PA SSENGER AIR BAG indicator la mps...... 57
Pr otection................................................ 54
Re duced pr otection.................................. 55
Side airbag.............................................. 53
Wi ndow airbag......................................... 53
Air0 ow
Air0ow
Setting................................................... 153
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)........ .142
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.............................................. 99
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................ 331
Displaying the service due dat e.............. 330
Fu nction/no tes...................................... 330
Re gular maintenance work..................... 330
Special service requ irements................. 330
AT
ATA A(anti-t
(anti-theT heTalar
alarm syst
m syst em)
em)
Deactivating the alarm........................... 100
Fu nction.................................................. 99
Interior pr otection function.....................1 01Priming/deactivating interior pr
otec-
tion........................................................ 101
Priming/deactivating tow- awa y pro-
te ction................................................... 101
To w- awa y protection function................. 100
A
A TTENTION ASSIST TTENTION ASSIST
Function................................................ 227
Setting.................................................. .229
System limitations.................................. 227
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............................................... 339
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 ................................ 135
A
A ut
ut omatic engine st
omatic engine st art
art
see ECO start/stop function 494
494
Index

Br
Br
ak
ak es
es
ABS (Anti-lo ckBraking System).............. 221
Ac tive Brake Assist................................. 241
Ad aptive brake lights.............................. 226
BAS (Brake Assist System).................... .222
Driving tips............................................ 169
EBD (Electronic Brake forc e Distribu-
tion).......................................................2 24
HOLD function....................................... 225
Limited braking e.ect (salt-treated
ro ads)................................................... .169
Ne w/replaced brake linings/brake
discs...................................................... 168
Po st-collision brak e.................................. 61
Ru nning-in no tes.................................... 168
Br
Br ak ak es
es
see Recuperation
Br Br aking assist aking assist ance
ance
see BAS (Brake Assist System)
Br
Br eakdo
eakdo wn
wn
Assistance overview. ................................ 20
To w- starting........................................... 364
To wing away.......................................... 360
Tr anspo rting theve hicle........................ .362
Wheel chang e........................................ 378 Br
Br ea kdo
eakdo wn
wn
see Flat tyre
Butt
Butt ons
ons
St eering wheel....................................... 279 C
C
Calls
Calls Mercedes me......................................... 311
Camera
Camera
Information............................................ 220
Camera
Camera
see 360° Camera
see Dashcam
see Reversing camera
Car key
Car key
see Key
Car w Car w ash
ash
see Care
Car w
Car w ash (car
ash (car e)
e)............................................ 337
Car
Car -t
-to-X
o-X -Communication
-Communication
Displaying hazard warnings.................... 305
Care
Care 360° camera......................................... 342 Air-water duct........................................ 337
Au
tomatic car wash.............................. .337
Carpet................................................... 343
Decorative foil........................................ 341
Display................................................... 343
Exterior lighting...................................... 342
Head-up display..................................... 343
High-pressure cleaner............................3 39
Pa int...................................................... 340
Plastic trim............................................3 43
Re alwo od/trim elements..................... .343
Re versing camera..................................3 42
Ro of lining............................................. 343
Seat belt................................................ 343
Seat co ver............................................. 343
Sensors................................................. 342
St eering wheel....................................... 343
Ta ilpipes................................................ 342
Tr ailer hitc h............................................ 342
Ve hicle soc ketfo rth e high-voltage
battery................................................... 342
Wa shing byhand.................................... 340
Wheels/rims.......................................... 342
Wi ndo ws................................................ 342
Wi per blades.......................................... 342 496 496
Index

Car
Car
pe
pet (Car
t (Car e)
e)............................................... 343
Changing bulbs
Changing bulbs Dipped beam.........................................1 45
Fi tting/removing co ver (front wheel
ar ch )...................................................... 144
Main beam............................................. 145
No tes..................................................... 143
Overview................................................ 144
Re versing lights......................................1 45
Tu rn signal lights (rear)........................... 145
Changing g
Changing g ears ears
Manually................................................ 185
Changing hub caps
Changing hub caps ....................................... 378
Char
Char ging
ging
Char geleve l displa y............................... 211
Charg ing cable control panel.................. 200
Ending thech arging process (alternat-
ing cur rent, mode 2/3).......................... 206
Ending thech arging process (direct
cur rent, mode 4).................................... 210
Indica tor lamps on vehicle soc ket........... 201
No tes - charging station (mode 3)......... .197
No tes - fast charging station (mode 4)... .199
No tes - mains soc ket (Mode 2)............... 196 No
tes - wallbox (mode 3)........................ 197
No tes on charging the high-voltage
battery................................................... 194
On-board electrical system battery
(12 V).................................................... 357
Setting the maximum possible charg-
ing cur rent (mains soc ket)...................... 199
St arting thech arging process (alter-
nating cur rent, mode 2/3)..................... 203
St arting thech arging process (direct
cur rent, mode 4).................................... 207
St ow ing thech arging cable.................... 194
USB port............................................... .130
Char
Char ging cable ging cable
Control panel......................................... 200
St ow ing................................................. 194
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.................................67
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................................................... 70
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..................................... 377
Chock Chock see Chock
City lighting
City lighting.................................................. 138 Index
497
497

Cleaning
Cleaning
see Care
Cleaning
Cleaning 0uid
0uid
see windscreen washer 0uid
Climat
Climat e contr
e contr ol
ol
Ac tivating/deactivating.......................... 154
Ac tivating/deactivating the A/C func-
tion (MBUX multimedia system).............. 154
Ac tivating/deactivating the synchro-
nisation function (control panel).............1 55
Ac tivating/deactivating the synchro-
nisation function (MBUX multimedia
system).................................................. 155
Air-recirculation mode (with /ne parti-
cle pre/lter)...........................................1 55
Au tomatic control................................. .154
Calling up the air conditioning menu....... 154
Demisting the windscreen...................... 153
Demisting windo ws................................ 155
Fr ont air vents........................................ 160
Immediate pre-entry clima tecont rol....... 158
No te...................................................... 153
Pre-entry climate control at depa rture
time.......................................................1 56
Pre-entry climate control using theke y... 156 Re
ar air vents......................................... 161
Re sidual heat......................................... 155
Setting (MBUX multimedia system)......... 154
Setting the air distribution...................... 153
Setting the air0ow.................................. 153
Setting theve hicle interior temp era-
ture....................................................... 153
St ationary heater/ ventilation................. 158
Switching the A/C function on/o.
(control panel)....................................... 154
Switching there ar wind owheater
on/o.................................................... 153
THERM ATIC cont rol panel...................... 153
THERMOTRONIC control panel............... 153
Ve ntilating theve hicle (con venience
opening).................................................. 94
Clot
Clot hes hook hes hook ................................................ 126
Co-dr Co-dr iv iver airbag
er airbag shut
shut o.
o.
see Automatic co-driver airbag shuto.
Coc
Coc kpit
kpit
Overview.............................................. 6, 10
Co.ee
Co.ee cup symbol
cup symbol
see ATTENTION ASSIST Collapsible spar
Collapsible spar
e wheel
e wheel
In0a ting................................................ .387
No tes..................................................... 386
Collision det
Collision det ection (park
ection (parked v
ed vehicle)
ehicle)
In fo rm ation........................................... .218
Combination switch
Combination switch ..................................... 136
Com
Com ponent-speci/c
ponent-speci/c inf
infor
ormation
mation................... 391
Com
Com put
puter
er
see On-board computer
Conv
Conv enience closing
enience closing...................................... 94
Conv
Conv enience opening
enience opening..................................... 94
Coolant (engine)
Coolant (engine) Levelch eck............................................ 336
No tes..................................................... 401
Cooling
Cooling see Climate control
Cop
Cop yr
yright
ight....................................................... 45
Cor
Cor ner
nering light
ing light............................................. 138
Cr
Cr oss
oss tr
tra1c
a1c (w
(war
arning)
ning)
see Manoeuvring assis tance
Cr
Cr oss
oss Tr
Tra1c
a1c Alert
Alert........................................ 270 498
498
Ind
ex

Operating.............................................
.287
Displa
Displa y (on-boar
y (on-boar d com
d comput
puter)
er)
Displa yson the inst rument displa y......... 282
Displa
Displa y in t
y in the windscr
he windscr een
een
see Head-up display
Displa
Displa y message
y message
Calling up (on-board computer).............. 409
No tes..................................................... 409
Displa
Displa y messag
y messag es
es
ç - - - km/h.................................... .449
È - - - km/h..................................... 449
h - - - km/h..................................... 448
# 12 V battery See Owner's Man-
ual......................................................... 464
ò Acoustic presence indicator
inoperative............................................ .423
: Active Light System inoperative..... 417
¯ AdBlue system fault Emer. op.:
max. XXX km/h Start not poss. in
XXX km.................................................. 473 ¯
AdBlue system fault Emer gency
op. in XXX miles See Owner's Manual.... 472
¯ AdBlue system fault Engine
start not possible................................... 473
¯ AdBlue system fault See Own-
er's Manual............................................ 472
5 Add 1 litre engine oil when next
re fuelling ............................................... 474
é ATTENTION ASSIST inoperati ve..... 448
é ATTENTION ASSIS T:Take a
break!.................................................... 448
: Automatic driving lights inoper-
ative...................................................... 417
Û Battery overheated Stop, every-
body out! Outdoors if possible ................ 425
û Before starting the engine, turn
th e steering wheel..................................4 32
J Brake immediately ........................ 446
Á Change key batteries .................... 414
è Charger cable connected .............. 423 J
Check brake 0uid le vel.................. 447
ï Check trailer hitch lock (white
display message) .................................... 429
h Check tyre(s) ................................ 467
! Clean the fuel /lter....................... 437
ÿ Coolant Stop vehicle Switch
engine o............................................... 436
! currently una vailable See Own-
er's Manual............................................4 59
÷ currently una vailable See Own-
er's Manual............................................4 60
5 Engine oil le vel cannot be meas-
ured....................................................... 475
5 Engine oil le velRe duce oil le vel..... 474
5 Engine oil le velSt op vehicle
Switch engine o.................................... 474
5 Engine oil pressure Stop Switch
o. engine.............................................. 475
ä Fault Drive at max. 80 km/h ......... 458500 500
Index

6
Front leT malfunction Consult
wo rkshop (e xample)...............................4 11
& inoperative Battery low................. 420
& inoperative Char geHV battery ...... 421
& inoperati veHigh-voltage battery
ch arging inco mplete ............................... 421
& inoperative Refuel vehicle............. .421
& inoperative See Owner's Man........ 420
! inoperative See Owner's Manual.. .460
÷ inoperative See Owner's Manual.. .461
T inoperative See Owner's Manual.. .462
G Inoperative................................... 463
: Intelligent Light System inopera-
tive........................................................ 418
Á Key being initialised Please wait.... 415
Á Key not de tected (red display
message).............................................. .415
Á Key not de tected (white display
message).............................................. .415
: LeT dipped beam (e xample).......... 416 6
LeT windowbag malfunction
Consult workshop (e xample).................. 412
: Malfunction See Owner's Man-
ual.........................................................4 17
Û Malfunction Visit workshop ........... 426
d Malfunction.................................. 427
Û Malfunction.................................. 426
ð Maximum speed exceeded ............ 451
ç O................................................. 450
ë O................................................. 447
! Parking brake See Owner's
Manual..................................................4 43
d Performance se verely limited........ 427
6 Please wait Depressurising tank .... 428
& Pre-entry clima tecont rol (via
ke y) available again aTer engine start..... 422
& Pre-ent ryclimate cont rol (via
ke y) inoperati veHV-battery low .............. 422
h Rectify tyre pressure ..................... 468 Ú
Re/ll AdBlue See Owner ’sMan-
ual ......................................................... 471
! Release parking brake ...................445
¸ Replace air cleaner ....................... 437
Á Replace key.................................. 414
æ Reser vefuel le vel.......................... 437
6 Restraint sys. malfunction Con-
sult workshop ....................................... .410
# See Owner's Manual..................... 464
Ù Steering malfunction Increased
ph ysical e.ort See Owner's Manual.......4 31
Ù Steering malfunction See Own-
er's Manual ............................................ 432
Ù Steering malfunction Stop
immediately See Owner's Manual ........... 431
d Stop Switch engine o.................. .427
# Stop vehicle Lea veengine run-
ning ....................................................... 466
# Stop vehicle See Owner's Man-
ual......................................................... 465 Index
501 501

ç
suspended .................................... 449
: Switch o. lights............................ 418
: Switch on headlamps .................... 418
6 Tank is dep ressurised Ready for
re fuelling ............................................... 428
6 Tank ventilation Malfunction
Consult workshop ................................. .428
á temp orarily una vailable Camera
view restric ted....................................... 457
¸ temp orarily una vailable Sensors
dirty....................................................... 456
Ú Top up AdBlue Emer gency op. in
XXX miles See Owner's Manual.............. 471
+ Top up coolant See Owner ’s
Manual.................................................. 435
¥ Top up washer 0uid...................... .434
u Towing not permitted See Own-
er's Manual ............................................ 423
d Trans. oil overheated Drive on
with care................................................ 440 !
Turn on the ignition torelease
th e parking brake ................................... 446
Ú .................................................... 471
d Vehicle is operational Switch o.
ignition before exiting............................. 429
h Warning tyre defect....................... 468
h Wheel sensor(s) missing ................ 467
Ú XX,X l Top up AdBlue Swit chon
ignition, wait 60 sec. or eng. start not
poss...................................................... 472
"Electric" drive prog ram cur rently
una vailable............................................. 425
Ac tive Blind Spot Assist cur rently
una vailable See Owner's Manual ............ 454
Ac tive Blind Spot Assist inoperative........ 454
Ac tive Blind Spot Assist not available
when towing a trailer See Owner's
Manual.................................................. 455
Ac tive bonnet malfunction See Own-
er's Manual............................................ 432 Ac
tive Brake Assist Functions cur-
re ntly limi ted See Owner's Manual .........462
Ac tive Brake Assist Functions limited
See Owner's Manual.............................. 463
Ac tive Distance Assist available again ..... 451
Ac tive Distance Assist cur rently
una vailable See Owner's Manual ............ 450
Ac tive Distance Assist inoperative.......... 450
Ac tive Lane Keeping Assist cur rently
una vailable See Owner's Manual ............ 455
Ac tive Lane Keeping Assist inoperative... 455
Ac tive Steering Assist cur rently
una vailable due tomultiple emer-
ge ncy stops........................................... 452
Ac tive Steering Assist cur rently
una vailable See Owner's Manual ............ 452
Ac tive Steering Assist inoperative...........4 52
Ad aptive Highbeam Assist cur rently
una vailable See Owner's Manual ............ 418
Ad aptive Highbeam Assist inoperative ....4 19 502 502
Index