adblue MERCEDES-BENZ A-CLASS HATCHBACK 2021 User Guide

A
A
ut
ut omatic engine st
omatic engine st op
op
see ECO start/s top function
A
A ut
ut omatic fr
omatic fr ont passeng
ont passeng er airbag
er airbagshut
shuto.
o.
PA SSENGER AIR BAG indicator la mps...... 57
A
A ut
ut omatic measur
omatic measur es
esaTer
aTer an accident
an accident ............ 61
A
A ut
ut omatic mirr
omatic mirr or f
or folding function
olding function
Ac tivating/deactivating.......................... 152
A
A ut
ut omatic tr
omatic tr ansmission
ansmission
DIRECT SELECT le ver............................. 183
Drive prog rams...................................... 178
DY NAMIC SELECT switch....................... 178
Engaging drive position.......................... 185
Engaging reve rsege ar............................ 184
Kickdown............................................... 186
Manual gear changing........................... .185
Selecting park position........................... 184
St eering wheel gearshiT paddles............ 185
Tr ansmission position displ ay................. 183
Tr ansmission position s........................... 183
A
A ut ut omatic tr
omatic tr ansmission (pr
ansmission (problem) oblem)
see Transmission (problem)
Axle load
Axle load Perm issible............................................ 392
Tr ailer operatio n..................................... 408 B
B
Bag hook
Bag hook..................................................... 126
Ball neck
Ball neck Folding out/in........................................ 271
B B AS (Br AS (Br ak
ake Assis
e Assist Syst t System)
em)........................... 222
Batt
Batt ery
ery
see High-voltage battery
Batt
Batt er
ery (high-v
y (high-v olt
oltag
age on-boar
e on-boar d electr
d electrical
ical
syst
syst em)
em)
see High-voltage battery
Batt
Batt er
ery (ke
y (ke y)
y)
Re placing................................................. 84
Batt
Batt er
ery (v
y (v ehicle)
ehicle)
Charging (Remo teOnline)..................... .167
No tes..................................................... 354
No tes (starting assis tance and charg-
ing)........................................................ 355
Batt
Batt er
ery oper
y oper ation
ation......................................... 162
Belt
Belt
see Seat belt
Bicy
Bicy cle r
cle r ack
ack
Load capacit y........................................ 407 Tr
ailer operatio n.................................... .274
Blind Spo
Blind Spo t Assist
t Assist
Ac tivating/deactivating.......................... 252
Fu nction................................................ 249
System limi tations.................................. 249
Blow
Blow er
er
see Clima tecont rol
BlueTEC
BlueTEC see AdBlue ®
Bonnet
Bonnet Function (active bonnet)......................... 331
Opening/closing.................................... 332
Re setting (active bonn et)........................ 331
Boo
Boo t lid t lid
see Tailgate
Br
Br ak
ak e Assis
e Assist Syst t System
em
see BAS (Brake Assist System)
Br
Br ak
ak e
e0uid
0uid
No tes..................................................... 401
Br
Br ak
ak e f
e f or
orce disce distr tribution
ibution
EBD (Elect ronic Brake forc e Distribu-
tion)....................................................... 224 Index
495
495

Cr
Cr
osswind Assist
osswind Assist
Fu nction/no tes...................................... 223
Cr
Cr uise contr
uise contr ol
ol
Ac tivating............................................... 230
Buttons.................................................. 230
Calling up a speed................................. 230
Deactivating........................................... 230
Fu nction................................................ 229
Maximum design speed.......................... 178
Re quirements:....................................... 230
Selecting............................................... 230
Setting a speed...................................... 230
St oring a speed...................................... 230
System limitations.................................. 229 D D
Dam
Dam ping adjus
ping adjus tment
tment.................................... 254
Dashboard
Dashboard see Cockpit
Dashcam
Dashcam Notes..................................................... 306
Selecting a USB device......................... .307
St arting/stopping a video recording...... .307 Dat
Dat a acq
a acq uisition
uisition
Ve hicle..................................................... 42
Dat
Dat a pr ot
a pr otection r
ection r ights
ights
Data storag e............................................ 45
Dat
Dat a st
a st or
orage
age
Data pr otection rights............................. .45
Electronic control units............................ 42
Online services....................................... .44
Ve hicle..................................................... 42
Deactiv Deactiv ating t
ating the alar
he alar m (AT
m (ATA)
A)........................ .100
Dealer
Dealer ship
ship
see Quali/ed specialist workshop
Declar
Declar ation of conf
ation of conf or
ormity
mity
Elect romagnetic compatibilit y.................. 29
Impor ter addresses.................................. 36
Jack.........................................................36
Speci/c absor ption rate........................... 29
TIREFIT kit................................................ 37
Wi reless vehicle component s................... 29
Decor
Decor ativ ative f
e f oil (cleaning ins
oil (cleaning instr tructions)
uctions)........... 341
DeN
DeNOx ag Ox ag ent
ent
see AdBlue ® Des
Destination entry
tination entry
Entering a POI or addres s....................... 302
Det
Det ecting inatt
ecting inatt entiv
entiveness
eness
see ATTENTION ASSIST
Diagnos
Diagnostics connection tics connection.................................. 39
Diesel
Diesel Low outside tempe ratures...................... 396
No tes..................................................... 396
Digit
Digit al Owner's Manual
al Owner's Manual.................................. 22
Dingh
Dingh yto
y to wing
wing
see Tow- bar system
Dipped beam
Dipped beam Changing bulbs..................................... .145
DIRECT SELECT lev
DIRECT SELECT lev er
er
Engageing reve rsege ar.......................... 184
Engaging drive position.......................... 185
Engaging neutral................................... .184
Engaging park position automaticall y...... 184
Fu nction................................................ 183
Selecting park position........................... 184
Displa
Displa y (car
y (care)
e)............................................... 343
Displa
Displa y (MBUX multimedia syst
y (MBUX multimedia syst em)
em)
Home sc reen.........................................2 86 Index
499
499

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

PRE-S
PRE-S
AFE
AFE®
®
PL
PL US (anticipat
US (anticipat or
ory occupant
y occupant
pr ot
pr otection plus)
ection plus)
Fu nction.................................................. 60
Re versing measures................................. 60
Pr ev
Pr event ent ativ
ativ e occupant pr ot
e occupant pr otection syst
ection syst em
em
see PRE-SAFE ®
(anticipatory occu-
pant pr otection)
see PRE-SAFE ®
PLUS (anticipatory
occupant pr otection plus)
Pr
Pr o/le
o/le
Creating a new pro/le............................ 293
No tes..................................................... 292
Selecting pro/le options......................... 293
Pr
Progr ogr amme amme
see DYNAMIC SELECT
Pr ot
Pr otection of t
ection of t he en
he envir
vironment
onment
No tes...................................................... .24
Ta ke -back of end-of-life vehicles............... 24 Q
Q
QR code
QR code Rescue car d............................................ .42
Quali/ed
Quali/ed specialist w
specialist w ork
orkshop
shop .........................40 R
R
R
R adar and ultr
adar and ultr asonic senso rs
asonic senso rs
Damage................................................. 220
R
R adio
adio
Overview of the functions and symbols.. .326
R R ain closing function ain closing function
Side windo ws........................................... 93
R
R ain-closing f
ain-closing f eature
eature
Sliding sunroof......................................... 98
REAC
REAC H r
H regulation
egulation........................................... 41
R
R eading lamp
eading lamp
see Interior lighting
R
R eading light
eading light
Switching on/o. (contactless). .............. 291
R
R eal w
eal w ood (Car
ood (Car e)
e).......................................... 343
R
R ear door (c
ear door (c hild safe
hild safety loc
ty lock)
k)........................... 79
R
R ear f
ear f og light
og light
Switching on/o..................................... 135
R
R ear seat
ear seat
see Seat
R
R ear seat belt
ear seat belt
Status displ ay.......................................... 52 R
R
ear seat belt st
ear seat belt st atus display
atus display........................... 52
R
R ear window
ear window
Replacing wiper blade............................ 148
R
R ear windo
ear windo w heat
w heater
er...................................... 153
R
R ear windo
ear windo w wipers
w wipers
Ac tivating/deactivating.......................... 146
R
R ear
ear -vie
-vie w mirr
w mirr or
or
Anti-dazzle mode (automatic)................. 150
R
R ear
ear -vie
-vie w mirr
w mirr or
or
see Outside mir rors
R
R ecuper
ecuper ation
ation
Fu nction................................................ 174
Setting.................................................. .175
R
R ecy
ecy cling
cling
see Take -back of end-of-life vehicles
R
R educing ag
educing ag ent
ent
see AdBlue ®
R
R efuelling
efuelling
Refuelling theve hicle............................ .188
R
R egistr
egistr ation
ation
Ve hicle..................................................... 40 Index
517
517

To
ngue weight........................................ 407
To wing capacity (trailer operation ).......... 406
T
T elephone
elephone
Connecting a mobile phone (Passke y).... 311
Connecting a mobile phone (Secure
Si mp lePa iring)....................................... 311
Fu nctions in thete lephone menu............ 311
No tes..................................................... 308
No tes on wireless charging (mobile
phone)................................................... 130
Operating modes................................... 310
Te lephone menu overview......................3 10
Wi reless charging (mobile phone)........... 131
T
T elephon elephon y oper
y operating modes
ating modes
Blu etoo th®
telephony............................. 310
T
T em
em per
per ature
ature
Setting theve hicle interior temp era-
ture....................................................... 153
Themes
Themes
Fastening.............................................. .293
Thr
Thr ough-loading f
ough-loading f eature
eature
see Load compartment
see Seat
T
T ie-do
ie-do wney
wn eyes
es.............................................. 126 TIREFIT kit
TIREFIT kit
Declaration of conformity......................... 37
St orage location............................ .349, 350
Using..................................................... 350
T
T o switc
o switc h on t
h on the ignition
he ignition
see Vehicle
T T ongue w ongue w eight
eight.............................................. 407
T
T ool
ool
see Vehicle tool kit
T
T op Tet
op Tether
her...................................................... 72
T
T opping up
opping up
Topping up AdBlue ®
.............................. .192
T
T ouc
ouc h Contr
h Contr ol
ol
On-board computer................................ 279
Operating.............................................. 287
T
T ouc
ouc hpad
hpad
Operating.............................................. 287
T
T ouc
ouc hscr
hscr een
een
Operating.............................................. 287
Tow
Tow -awa
-a wa y pr ot
y pr otection
ection
Fu nction................................................ 100
Priming/deactivating............................. 101
Tow
Tow -bar syst
-bar syst em
em............................................ 276 T
T
o
o w
w -st
-st ar
arting
ting................................................. 364
To
To wing away
wing away................................................. 360
To
To wing eye
wing eye
Fi tting.................................................... 363
St orage location..................................... 363
To
To wing met
wing met hods
hods................................... 358, 359
Tr
Tr a1c
a1c inf
infor
ormation
mation
Switching on the displa y......................... 305
Tr
Tr a1c
a1c Sign Assist
Sign Assist
Fu nction/no tes...................................... 247
Setting................................................... 249
System limits......................................... 247
Tr
Tr ailer hitch
ailer hitch
Axle load................................................ 408
Bic ycle rack ........................................... 274
Care...................................................... 342
Coupling up/uncoupling a trailer............ 272
Fa stening points.................................... 406
Fo lding the ball neck out/in................... 271
General no tes....................................... .405
Mounting dimensions............................. 406
No tes..................................................... 270
Overhang dimension.............................. 406
Soc ket................................................... 272 522 522
Index