2021 MERCEDES-BENZ A-CLASS HATCHBACK engine

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

Ad
aptive Highbeam Assist Plus cur-
re ntly una vailable See Owner's Manual ... 419
Ad aptive Highbeam Assist Plus inop-
erative.................................................. .419
Anti-theT alarm system Malfunction ....... 434
Apply brake todeselect Park (P) posi-
tion....................................................... .438
Apply brake toselect D or R ...................438
Apply brake toselect R .......................... 438
Au xiliary battery malfunction (red dis-
play message) ....................................... .442
Au xiliary battery malfunction (white
displ aymessage) .................................... 442
Beginning emer gency stop..................... 452
Blind Spot Assist cur rently una vailable
See Owner's Manual.............................. 453
Blind Spot Assist inoperative.................. 454
Blind Spot Assist not available when
to wing a trailer See Owner's Manual ...... 454Cann
otstart engine See Owner's
Manual................................................. .435
Charging fault Please change charging
me thod See Owner's Manual .................424
Charging me thod cur rently una vaila-
ble Please try again or change charg-
ing me thod............................................ 424
Check brake pads See Owner's Man-
ual........................................................ .447
Check tyre pressures then restart Run
Flat Indicator......................................... 470
Clutch overheated Avoid pulling away
until thewa rning goes out...................... 441
Cruise control and Limiter inoperative.... 448
Cruise control inoperative...................... 448
Cruise control o.................................... 449
Depress clutch fully tostart engine........ 441
Device de tected at diagnostics con-
nection See Owner's Manual................. .464 Drive system Malfunction
Stop Switch
engine o............................................... 437
Drive system Malfunction Visit work-
shop ...................................................... 437
Fr ont-passenger airbag disabled See
Owner's Manual .................................... .412
Fr ont-passenger airbag enabled See
Owner's Manual .................................... .413
Hazard warning lamps malfunctioning .... 420
Head-up display cur rently una vailable
See Owner's Manual.............................. 430
Head-up display inoperative ...................431
Limiter inoperative................................. 449
Limiter passive....................................... 449
N permanently active Risk of vehicle
ro lling....................................................4 39
Not possible tounlock charging cable
See Owner's Manual.............................. 423
Only elect ric drive available Power
limited................................................... 424 Index
503 503

Only select
Park (P) when vehicle is
stationary.............................................. 438
Pa rking Assist and PARKTRONIC inop-
erative See Owner's Manual................... 458
Pa rking lock inoperative Apply the
parking brake ........................................ .440
Place theke y in the mar ked space
See Owner's Manual.............................. 416
PRE-SAFE inoperative See Owner's
Manual.................................................. 414
Re duce speed........................................ 469
Re duced drive system per form ance
See Owner's Manual.............................. 425
Re versing not poss. Consult workshop ... 439
Risk of vehicle rolling away App ly
parking brake See Owner's Manual ........ 441
Risk of vehicle rolling awayPa rking
brake not applied See Owner's Manual ... 446
Risk of vehicle rolling Driver door
open and transmission not in P .............. 439Ru
n Flat Indica tor inoperative................. 470
Speed limit (winter tyres) XXX km/h .......451
Speed Limit Assist cur rently una vaila-
ble See Owner's Manual........................ 451
Speed Limit Assist inoperative................ 451
Te aching in transmission comple te......... 441
Te aching in transmission Operate
selector le ver Brake for XX seconds
Risk of vehicle rolling ............................. 440
To shiT out of P or N,depress brake
and start engine.................................... .438
To switch o. the engine, press the
St art/ Stop button for at least 3 sec-
onds or 3 times...................................... 435
Tr a1c Sign Assist cur rently una vaila-
ble See Owner's Manual........................ 453
Tr a1c Sign Assist inoperative................. 453
Tr ansmission Malfunction ....................... 440
Tr ansmission Malfunction Stop............... 439 Tr
ansmission Malfunction Visit work-
shop ...................................................... 441
Ty re press. monitor cur rently una vaila-
ble......................................................... 466
Ty re press. monitor inoperative .............. 466
Ty re press. monitor inoperative No
wheel sensors ........................................ 467
Ty re pressure Check tyres ...................... 469
Ty re(s) ove rheated .................................. 469
Ve hicle not cur rently being charged
Charging station fault............................. 424
Wi per malfunctioning .............................434
Wi thout changing gear, consult work-
shop ............................................. .426, 439
Wi thout starting engine again, consult
wo rkshop ............................................... 426
Dist
Dist ance contr ance contr ol
ol
see Active Distance Assist DISTRONIC
DIS DIS TR TRONIC
ONIC
see Active Distance Assist DISTRONIC 504
504
Index

Displaying engine data...........................1
81
Displaying vehicle dat a........................... 181
Drive prog ram displa y............................ 179
Drive prog rams...................................... 178
Fu nction................................................ 178
Ope rating.............................................. 179
Selects the drive prog ram. ..................... 179 E
E
E10
E10.............................................................. 395
Easy entr
Easy entr y f
y feature
eature
Fu nction/no tes...................................... 113
Setting................................................... 114
Easy e
Easy e xit f
xit featu re
eature
Fu nction/no tes...................................... 113
Setting................................................... 114
EBD (Electr
EBD (Electr onic Br
onic Brak
ake f
e f or
orce Dis
ce Dis tr
tribution)
ibution)
Fu nction/no tes...................................... 224
EC
EC O Assist
O Assist
Fu nction/no tes...................................... 176
EC
EC O display
O display
Fu nction................................................ 174 EC
EC
O st
O st ar
art/st
t/st op function
op function
Switching o./on.................................... 173
Electr
Electr ic dr
ic drive
ive................................................ 162
Electr
Electr ic par
ic parking br
king br ake
ake
Applying automaticall y........................... 215
Applying/releasing manually.................. 217
Emer gency braking................................ 218
Re leasing automaticall y.......................... 217
Electr
Electr ical fuses
ical fuses
see Fuses
Electr
Electr omagne
omagne tic com
tic compatibility
patibility
Declaration of conformity........................ .29
Electr
Electr onicSt
onic Stability Pr
ability Pr ogr
ogram
am
see ESP ®
(Elect ronic Stability Prog ram)
Emerg
Emerg ency
ency
Assis tance overview................................. 20
Fire extinguisher.................................... 347
Fi rs t-aid kit (soT sided).......................... 347
Re moving thewa rning triangle............... 346
Saf etyve st............................................. 346
Setting up thewa rning triangle............... 347
Emerg
Emerg ency br
ency br aking
aking...................................... 218 Emerg
Emerg
ency br
ency br aking
aking
see BAS (Brake Assist System)
Emerg
Emerg ency call
ency call
see Me rcedes-Benz emer gency call system
Eme rg
Emerg encykey
ency key
Inserting/ removing.................................. 84
Locking/unlocking the doors................... 89
Unlocking theta ilgat e.............................. 91
Emerg
Emerg ency oper
ency oper ation mode
ation mode
St arting theve hicle............................... .166
Emerg
Emerg ency
encyshut
shuto.
o.
see Hybrid system
Emerg
Emerg ency spar
ency spar e wheel
e wheel
In0ating................................................. 385
No tes..................................................... 383
Ener Ener gy
gy0ow
0ow display
display
Displayin g.............................................. 299
Fu nction/no tes...................................... 299
Engine
Engine
Engine number....................................... 392
Starting (emer gency ope ration mode ).... 166
St arting (Remo teOnline)........................ 168 506 506
Index

Engine data
Engine data
Displaying............................................. .181
Engine electr
Engine electr onics
onics
No tes..................................................... 389
Engine number
Engine number............................................. 392
Engine oil
Engine oil
Additives................................................ 399
Capacity................................................ 400
Checking the oil le vel using the on-
board computer.....................................3 34
MB-F reigabe or MB-Appr oval................. .400
Quality................................................... 400
To pping up............................................ .334
ERA
ERA -GL -GLON
ONASS tASS t es
est modet mode
St arting/ending.................................... .323
Err
Err or message
or message
see Display message
ESC (Electr
ESC (Electr onicSt
onic Stability Contr
ability Contr ol)
ol)
see ESP ®
(Elect ronic Stability Prog ram)
ESP
ESP ®
®
Crosswind Assis t.................................... 223
Tr ailer stabilisatio n................................. 223 ESP
ESP
®
®
(Electr
(Electronic St
onic Stability Pr
ability Pr ogr
ogram)
am)
Ac tivating/deactivating.......................... 224
Fu nction/no tes...................................... 222
EU type approv
EU type appr oval number
al number ............................. 392
Ext
Ext er
erior lighting
ior lighting
Car e...................................................... 342
Ext
Ext er
erior lighting
ior lighting
see Lights F
F
F
F atigue det
atigue det ection
ection
see ATTENTION ASSIST
F
F ir
ir e e
e e xtinguisher
xtinguisher.......................................... 347
F
F irs
irst-aid kit t-aid kit (soT
(soTsided)
sided)................................. 347
Flat to
Flat towing
wing
see Tow- bar system
Flat tyre
Flat tyre MOExtended tyres................................. 348
No tes..................................................... 348
TIREFIT kit.............................................. 350
Wheel chang e........................................ 378
Floor mats
Floor mats................................................... 132 F F
oil cov
oil cov er
ering
ing
Ra dar and ultrasonic sensor s................. 220
Fr
Fr ee
ee soTw
soTw are
are................................................. 45
Fr
Fr eq
eq uencies
uencies
Mobile phone......................................... 390
Tw o-w ayradio........................................ 390
Fr
Fr ont airbag (dr
ont airbag (dr iv
iver
er , fr
, fr ont passeng
ont passeng er)
er).............. 53
Fr
Fr ont passeng
ont passeng er seat
er seat
see Load compartment
see Seat
Fr Fr ont wheel ar ch
ont wheel ar ch
Fi tting/removing the co ver..................... 144
Fr
Fr ont wheel arc
ont wheel arc h cov
h cover
er
Fi tting/removing.................................... 144
F
F uel
uel
Additives................................................ 396
Diesel.................................................... 396
E10........................................................ 395
Fu elreser ve........................................... 397
Low outside temp eratures...................... 396
Pe trol..................................................... 395
Quality (diesel )....................................... 396
Quality (petrol)....................................... 395
Re fuellin g.............................................. .188 Index
507 507

Sulphur content....................................
.395
Ta nk content.......................................... 397
F
F uel consump
uel consump tion indicat
tion indicator
or
Calling up.............................................. 181
F
F unction seat
unction seat
see Door cont rol panel
F
F uses
uses
Before replacing a fuse.......................... 364
Fu se assignment diag ram. ...................... 364
Fu se box in the engine compartment......3 65
Fu se box in the front passenger foot-
we ll........................................................ 366
Fu se box in the load compartment......... 367
No tes..................................................... 364 G
G
Gar Gar ag
age door opener
e door opener
Clea ring the memory.............................. 215
Gar Gar ag
age door openers
e door openers
Opening/closing the door......................2 15
Prog ramming buttons............................. 213
Re solving problems................................ 214
Syn chronising thero lling code................ 214
Gear
Gear shiT shiT r
recommendation
ecommendation................... 183, 186 Genuine par
Genuine par
ts
ts................................................ 25
Glide mode
Glide mode.................................................. 187
Gr Gr oss mass
oss mass.................................................. 392 H
H
Handbr
Handbr ake
ake
see Electric parking brake
Handling c
Handling c har
haract
act er
eris
istics (unusual)tics (unusual) ................ 368
Hazar
Hazar d w
d war
arning lights
ning lights................................... 137
Head r
Head r es
estrtraint
aint
Fr ont (adjusting mechanically)................ 108
Re ar (adjusting)..................................... .109
Re ar (removing//tting)........................... 110
Head-up displ ay
Head-up display
Adjusting brightness (on-board com-
puter).................................................... 283
Ad justing display elements (on-board
co mp uter).............................................. 283
Care...................................................... 343
Fu nction................................................ 282
Menu (on-boa rdcomputer)..................... 283
Operating the memory function.............. 115 Setting
the position (on-board com-
puter).................................................... 283
Switching on/o.....................................2 84
Headlam
Headlam p p0ashing
0ashing ........................................ 136
Headlam
Headlam ps
ps
see Automatic driving lights
Heating
Heating see Climate control
Help call
Help call see Mercedes-Benz emer gency call system
High beam
High beam Activating/deactivating.......................... 136
High beam
High beam see Adaptive Highbeam Assist
see Adaptive Highbeam Assist Plus
High-pr
High-pr essur
essure cleaner (car
e cleaner (car e)
e)........................ 339
High-v
High-v olt
oltag
age batt
e batt ery
ery
Char geleve l displa y............................... 211
Charg ing cable control panel.................. 200
Charging duration.................................. 404
Connection types...................................4 04
Ending thech arging process (alternat-
ing cur rent, mode 2/3).......................... 206 508 508
Ind
ex

Ending
thech arging process (direct
cur rent, mode 4).................................... 210
Energy 0ow displa y................................. 299
General no tes on chargin g.................... .194
Indicator lamps on vehicle soc ket........... 201
No tes on charging (charging station,
mode 3)................................................ .197
No tes on charging (fast charging sta-
tion, mode 4)......................................... 199
No tes on charging (mains soc ket,
mode 2)................................................. 196
No tes on charging (wallbox, mode 3)...... 197
Ra nge.................................................... 404
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
Ty pe....................................................... 404
Vo ltage types......................................... 404
High-v
High-v olt oltag
age on-boar
e on-boar d electr
d electrical syst
ical syst em
em
Indicator lamps on vehicle soc ket........... 201
Hill St
Hill Star art Assist
t Assist............................................ 226 HOLD function
HOLD function
Function/no tes...................................... 225
Switching on/o..................................... 225
Home scr
Home scr een (media displa een (media displa y)
y)
Overview................................................ 286
Hybr
Hybr id syst
id syst em
em
Con/guring settings via the multime-
dia system............................................. 298
Manual swit ch-o................................... .163
Hybr
Hybr id syst
id syst em
em
see Battery operation
see Electric drive I I
i-Size c
i-Size c hild seat secur
hild seat secur ing syst
ing system
em
Fi tting...................................................... 70
Seats suitable for attaching...................... 70
Identi/cation
Identi/cation plate
plate
Engine................................................... 392
Ve hicle.................................................. 392
Ignition key
Ignition key
see Key
Immediat Immediat e pr
e pre-entr
e-entr y climat
y climat e contr
e control
ol............ .158 Immobiliser
Immobiliser
.................................................... 99
Im
Im plied w
plied w arr
arranty
anty
Ve hicle..................................................... 42
Im
Im port
port er addr
er addr esses
esses
Wi reless components...............................36
In-Car
In-Car O1ce
O1ce
Fe atures................................................ 317
Indicat
Indicat or lamp
or lamp
see Warning/indicator lamp
Individual dr
Individual dr iv
ive pr
e pr ogr
ogram
am
Con/guring............................................ 180
Selecting............................................... 179
Inspection Inspection see ASS YST PLUS
Ins
Instr trument clust
ument clust er
er
Fu nction/no tes.............................. 277, 278
Ins
Ins tr
trument display
ument display
Fu nction/no tes...................................... 278
Instrument clus ter.................................... 12
Overview of displa ys............................... 282
Wa rning/indicator lamps........................ 476 Index
509
509