tow MERCEDES-BENZ B-CLASS HATCHBACK 2021 Repair Manual

St
oring a speed...................................... 233
System limitations.................................. 232 D
D
Dam
Dam ping adjus
ping adjus tment
tment.................................... 257
Dashboard
Dashboard see Cockpit
Dashcam
Dashcam Notes..................................................... 309
Selecting a USB device......................... .310
St arting/stopping a video recording...... .310
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
or age
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)........................ .103
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 foil (cleaning ins
oil (cleaning instr tructions)
uctions)........... 347
DeN
DeNOx ag Ox ag ent
ent
see AdBlue ®
Des
Destination entry tination entry
Entering a POI or addres s....................... 305
Det
Det ecting inatt
ecting inatt entiv
entiveness
eness
see ATTENTION ASSIST
Diagnos
Diagnostics connection tics connection.................................. 38
Diesel
Diesel Low outside tempe ratures...................... 399
No tes..................................................... 399
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..................................... .149 DIRECT SELECT lev
DIRECT SELECT lev
er
er
Engageing reve rsege ar.......................... 188
Engaging drive position.......................... 189
Engaging neutral................................... .188
Engaging park position automaticall y...... 188
Fu nction................................................ 187
Selecting park position........................... 188
Displa
Displa y (car
y (care)
e)............................................... 349
Displa
Displa y (MBUX multimedia syst
y (MBUX multimedia syst em)
em)
Home sc reen.........................................2 89
Operating.............................................. 290
Displa
Displa y (on-boar
y (on-boar d com
d comput
puter)
er)
Displa yson the inst rument displa y......... 285
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).............. 412
No tes..................................................... 412
Displa Displa y messag
y messag es
es
ç - - - km/h .................................... .453
00CB - - - km/h..................................... 452
h - - - km/h..................................... 452
006F 2nd seat row, leT Not loc ked......... 437 502
502
Index

00BD
Top up coolant See Owner ’s
Manual.................................................. 439
00B2 Top up washer 0uid...................... .437
u Towing not permitted See Own-
er's Manual ............................................ 426
0080 Trans. oil overheated Drive on
with care................................................ 444
0024 Turn on the ignition torelease
th e parking brake ................................... 449
Ú .................................................... 474
0072 Vehicle is operational Switch o.
ignition before exiting............................. 432
0077 Warning tyre defect....................... 471
0077 Wheel sensor(s) missing ................ 470
Ú XX,X l Top up AdBlue Swit chon
ignition, wait 60 sec. or eng. start not
poss...................................................... 475
"Electric" drive prog ram cur rently
una vailable............................................. 428 Ac
tive Blind Spot Assist cur rently
una vailable See Owner's Manual ............ 458
Ac tive Blind Spot Assist inoperative........ 458
Ac tive Blind Spot Assist not available
when towing a trailer See Owner's
Manual.................................................. 458
Ac tive bonnet malfunction See Own-
er's Manual............................................ 435
Ac tive Brake Assist Functions cur-
re ntly limi ted See Owner's Manual .........465
Ac tive Brake Assist Functions limi ted
See Owner's Manual.............................. 466
Ac tive Distance Assist available again ..... 454
Ac tive Distance Assist cur rently
una vailable See Owner's Manual ............ 453
Ac tive Distance Assist inoperative.......... 454
Ac tive Lane Keeping Assist cur rently
una vailable See Owner's Manual ............ 458
Ac tive Lane Keeping Assist inoperative... 459 Ac
tive Steering Assist cur rently
una vailable due tomultiple emer-
ge ncy stops........................................... 456
Ac tive Steering Assist cur rently
una vailable See Owner's Manual ............ 455
Ac tive Steering Assist inoperative...........4 55
Ad aptive Highbeam Assist cur rently
una vailable See Owner's Manual ............ 421
Ad aptive Highbeam Assist inoperative ....4 22
Ad aptive Highbeam Assist Plus cur-
re ntly una vailable See Owner's Manual ... 422
Ad aptive Highbeam Assist Plus inop-
erative.................................................. .422
Anti-theT alarm system Malfunction ....... 437
Apply brake todeselect Park (P) posi-
tion....................................................... .441
Apply brake toselect D or R ...................442
Apply brake toselect R .......................... 442
Au xiliary battery malfunction (red dis-
play message) ....................................... .446 Index
505 505

Re
duced drive system per form ance
See Owner's Manual.............................. 428
Re versing not poss. Consult workshop ... 443
Risk of vehicle rolling away App ly
parking brake See Owner's Manual ........ 444
Risk of vehicle rolling awayPa rking
brake not applied See Owner's Manual ... 450
Risk of vehicle rolling Driver door
open and transmission not in P .............. 442
Ru n Flat Indica tor inoperative................. 473
Speed limit (winter tyres) XXX km/h .......455
Speed Limit Assist cur rently una vaila-
ble See Owner's Manual........................ 454
Speed Limit Assist inoperative................ 454
Te aching in transmission comple te......... 444
Te aching in transmission Operate
selector le ver Brake for XX seconds
Risk of vehicle rolling ............................. 444
To shiT out of P or N,depress brake
and start engine.................................... .441 To
switch o. the engine, press the
St art/ Stop button for at least 3 sec-
onds or 3 times...................................... 438
Tr a1c Sign Assist cur rently una vaila-
ble See Owner's Manual........................ 456
Tr a1c Sign Assist inoperative................. 456
Tr ansmission Malfunction ....................... 443
Tr ansmission Malfunction Stop............... 443
Tr ansmission Malfunction Visit work-
shop ...................................................... 445
Ty re press. monitor cur rently una vaila-
ble......................................................... 469
Ty re press. monitor inoperative .............. 469
Ty re press. monitor inoperative No
wheel sensors ........................................ 470
Ty re pressure Check tyres ...................... 472
Ty re(s) ove rheated .................................. 472
Ve hicle not cur rently being charged
Charging station fault............................. 427
Wi per malfunctioning .............................437 Wi
thout changing gear, consult work-
shop ............................................. .429, 442
Wi thout starting engine again, consult
wo rkshop ............................................... 429
Dist
Dist ance contr ance contr ol
ol
see Active Distance Assist DISTRONIC
DIS DIS TR
TR ONIC ONIC
see Active Distance Assist DISTRONIC
Door
Door Additional door loc k................................. 84
Child saf ety lock (rear door )..................... 78
Locking/unlocking (emer gency key)........ .88
Opening (from inside).............................. .85
Unlo cking (from inside)............................ 85
Door contr
Door contr ol panel
ol panel......................................... 18
Dra
Dra wbar
wbar
see Tow- bar system
Dr
Dr iv
ive Awa
e Away Assi st
y Assi st........................................ .272
Dr
Dr iv
ive position
e position
Engaging................................................ 189
Dr
Dr iv
ive pr
e pr ogr
ogram display
am display .................................. 183 Index
507
507

ESC (Electr
ESC (Electr
onicSt
onic Stability Contr
ability Contr ol)
ol)
see ESP ®
(Elect ronic Stability Prog ram)
ESP
ESP ®
®
Crosswind Assis t.................................... 226
Tr ailer stabilisatio n................................. 227
ESP
ESP ®
®
(Electr
(Electronic St
onic Stability Pr
ability Pr ogr
ogram)
am)
Ac tivating/deactivating.......................... 227
Fu nction/no tes...................................... 225
EU type appr ov
EU type appr oval number
al number ............................. 394
Ext
Ext er
erior lighting
ior lighting
Care..................................................... .348
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.......................................... 353
F
F irs
irst-aid kit t-aid kit (soT
(soTsided)
sided)................................. 353
Flat to
Flat towing
wing
see Tow- bar system Flat tyre
Flat tyre
MOExtended tyres................................. 354
No tes..................................................... 354
TIREFIT kit.............................................. 356
Wheel chang e........................................ 383
Floor mats
Floor mats................................................... 136
F
F oil cov
oil cov er
er ing
ing
Ra dar and ultrasonic sensor s................. 223
Fr
Fr ee
ee soTw
soTw are
are................................................. 45
Fr
Fr eq
eq uencies
uencies
Mobile phone......................................... 393
Tw o-w ayradio........................................ 393
Fr Fr ont airbag (dr
ont airbag (dr iv
iver
er , fr
, fr ont passeng
ont passeng er)
er).............. 52
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..................... 148
Fr
Fr ont wheel arc
ont wheel arc h cov
h cover
er
Fi tting/removing.................................... 148
F
F uel
uel
Additives................................................ 398
Diesel.................................................... 399 E10........................................................ 397
Fu
elreser ve........................................... 400
Low outside temp eratures...................... 399
Pe trol..................................................... 397
Quality (diesel )....................................... 399
Quality (petrol)....................................... 397
Re fuellin g.............................................. .191
Sulphur content..................................... 397
Ta nk content.......................................... 400
F F uel consump
uel consump tion indicat
tion indicator
or
Calling up.............................................. 185
F
F unction seat
unction seat
see Door cont rol panel
F
F uses
uses
Before replacing a fuse.......................... 371
Fu se assignment diag ram...................... .371
Fu se box in the engine compartment......3 72
Fu se box in the front passenger foot-
we ll........................................................3 72
Fu se box in the load compartment......... 373
No tes..................................................... 371 510
510
Index

Oper
Oper
ating safe
ating safe ty
ty
Declaration of conformity (electro-
magnetic compatibility)........................... .29
Declaration of conformity (jack)............... 36
Declaration of conformity (TIREFIT kit)...... 37
Declaration of conformity (wireless
ve hicle components)................................ 29
Information.............................................. 27
Oper Oper ating syst
ating syst em
em
see On-board computer
Output
Output see Powe r me ter
Outside mirr
Outside mirr ors
ors
Anti-dazzle mode (automatic)................ .154
Au tomatic mir rorfo lding function........... 156
Fo lding in/out........................................ 153
Operating the memory function.............. 118
Pa rking position..................................... 155
Setting................................................... 153
Ov
Ov er
erhead contr
head contr ol panel
ol panel
Overview.................................................. 16
Owner's Manual
Owner's Manual Vehicle equipment................................... 26
Owner's Manual (digit
Owner's Manual (digit al)
al)................................. 22 P
P
P
P aint (cleaning ins
aint (cleaning ins tr
tructions)
uctions) ........................ .346
P
P aint code
aint code................................................... 394
P
P anor
anor ama sliding sunr
ama sliding sunr oof
oof
see Sliding sunroof
P
P ar
ar k position
k position
Engaging................................................ 188
Selecting automatically..........................1 88
P P ar
ar king
king
see Electric parking brake
P
P ar
ar king aid
king aid
see Parking Assist PARKTRONIC
P
P ar
ar king Assis
king Assist P t PARK
ARK TR
TRONIC
ONIC
Ac tivating............................................... 267
Ad justing warning tones......................... 267
Deactivating........................................... 267
Fu nction................................................ 264
Side impact pr otection........................... 265
System limitations.................................. 264
P
P ar ar king assist
king assist ance syst
ance systems
ems
see Active Parking Assist
P
P ar
ar king br
king br ake
ake
see Electric parking brake P
P
ar
ar king lights
king lights............................................... 138
P
P ar
ar king op
king op tion
tion
Selecting............................................... 308
P
P ar
ar king position
king position
Outside mir rors...................................... 155
St oring the position of the passenger
outside mir ror using reve rsege ar........... 156
P
P ar
ar king ser
king ser vice
vice
Selecting parking options...................... .308
P
P ar
ar king up
king up................................................... 222
P
P ar
ar titioning net
titioning net
At tach ing/removing............................... 126
P
P ASSEN
ASSEN GER AIR BA
GER AIR BAG st
G st atus display
atus display
see Automatic front passenger airbag shuto.
P
P edes
edes tr
trian pr ot
ian pr otection
ection
see Active bonnet (pedestrian pr otection)
P
P er
er iod out of use
iod out of use
Ac tivating/deactivating standby mode... 222
St andby mode function.......................... 222
P
P er
er missible axle load
missible axle load .................................... 394
P
P er
er missible to
missible towing met
wing met hods
hods................. 365, 366
Pe
Pe tr
trol
ol........................................................... 397 518
518
Index

Problem................................................. 102
Ra in-closing feature............................... 101
Smar
Smar tphone
tphone
see Smartphone integ ration
see Telephone
Smar
Smar tphone int
tphone int egr
egration
ation
Overview................................................ 322
Sno
Sno w c
w chains
hains................................................3 74
Soc ke
Soc ket (12 V)
t (12 V)
Boot/luggage compartment................... 133
Fr ont centre console.............................. 133
SoTw SoTw are
areupdate
update
System updates..................................... 297
Sound
Sound PRE- SAFE®
Sound................................... 59
Sound menu
Sound menu Functions overview................................ 335
Spar
Spar e wheel
e wheel
see Emer gency spa rewheel
Specialis Specialis t w t work
ork shop
shop
see Quali/ed specialist workshop
Speci/c
Speci/c absorp
absorption r
tion rate
ate ................................. 29 Speed Limit Assist
Speed Limit Assist
Function/no tes...................................... 249
Setting................................................... 250
System limitations.................................. 249
Speed limit f
Speed limit f or wint
or winter tyr
er tyres
es
Setting................................................... 235
St St andb andb y mode
y mode
Ac tivating/deactivating.......................... 222
Fu nction................................................ 222
St
St anding lights
anding lights............................................ .138
St
St ar
art-o.
t-o. assist
assist
Ac tivating............................................... 230
Fu nction................................................ 230
St
St ar
art/st
t/st op butt
op butt on
on
Pa rking theve hicle................................. 215
St arting theve hicle............................... .169
Switching on the po wer supply/vehicle.. 168
St
St ar
art/st
t/st op function
op function
see ECO start/stop function
St
St art
art er batt
er batt ery
ery
Charging (Remo teOnline)..................... .171
St
St ar
arting
ting
see Vehicle S
S t
tar
ar ting assist
ting assist ance
ance
see Jump-start connection
St
St ar
arting-o.
ting-o. aid
aid
see Hill Start Assist
St
St ationar
ationar y heat
y heater/v
er/ventilation
entilation
Ac tivating/deactivating (control panel)... 163
Setting (MBUX multimedia system)......... 164
S
S TEER C
TEER C ONTR
ONTROL
OL
Fu nction/no tes...................................... 227
St
St eer
eer ing wheel
ing wheel
Ad justing (manual ly)............................... 114
Buttons.................................................. 282
Care...................................................... 349
St eering wheel heater............................ 115
St St eer
eer ing wheel
ing wheel g
gear
ear shiT
shiT paddles
paddles .................. 189
St
St eer
eer ing wheel heat
ing wheel heat er
er
Ac tivating/deactivating.......................... 115
St ow
St owag age ar
e ar eas
eas
see Loading
see Stow age space
St ow
St owag age com e com par
partments
tments
see Loading
see Stow age space Index
523 523

T
T
elephon
elephon y oper
y operating modes
ating modes
Blue tooth ®
telephony............................. 313
T
T em
em per
per ature
ature
Setting theve hicle interior temp era-
ture....................................................... 157
Themes
Themes
Fastening.............................................. .296
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.............................................. 128
TIREFIT kit
TIREFIT kit
Declaration of conformity......................... 37
Storage location............................ .355, 356
Using..................................................... 356
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.............................................. 410
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 ®
.............................. .196
T
T ouc
ouc h Contr
h Contr ol
ol
On-board computer................................ 282
Operating.............................................. 290
T
T ouc
ouc hpad
hpad
Operating.............................................. 290
T
T ouc
ouc hscr
hscr een
een
Operating.............................................. 290
Tow
Tow -awa
-a wa y pr ot
y pr otection
ection
Fu nction................................................ 103
Priming/deactivating............................. 104
Tow
Tow -bar syst
-bar syst em
em............................................ 279
Tow
Tow -st
-star
arting
ting................................................. 370
To
To wing away
wing away................................................. 367
To
To wing eye
wing eye
Fi tting.................................................... 370
St orage location..................................... 370
To
To wing met
wing met hods
hods................................... 365, 366
Tr
Tr a1c
a1c inf
infor
ormation
mation
Switching on the displa y......................... 308 T
T
r
ra1c
a1c Sign Assist
Sign Assist
Fu nction/no tes...................................... 250
Setting................................................... 252
System limits......................................... 250
Tr
Tr ailer hitch
ailer hitch
Axle load................................................ 410
Bic ycle rack ........................................... 277
Care...................................................... 348
Coupling up/uncoupling a trailer............ 275
Fa stening points.................................... 408
Fo lding the ball neck out/in................... 274
General no tes....................................... .408
Mounting dimensions............................. 408
No tes..................................................... 273
Overhang dimension.............................. 408
Soc ket................................................... 275
To ngue weight........................................ 410
To wing capacity.................................... .409
Tr
Tr ailer oper ailer oper ation
ation
Ac tive Blind Spot Assist.......................... 254
Ac tive Lane Keeping Assist..................... 255
Bicycle rack ........................................... 277
Coupling up/uncoupling a trailer............ 275
Fo lding the ball neck out/in................... 274
No tes..................................................... 273 Index
525
525

00D6
System er rorwa rning lam p........... 482
0024 The electric parking brake (yel-
low) indica tor lam p................................. 488
ï Trailer tow hitch warning lam p....... 484
0077 Tyre pressure monitoring sys-
te m wa rning lamp 0ashes....................... 493
0077 Tyre pressure monitoring sys-
te m wa rning lamp lights up.................... 494
L Warning lamp for distance
wa rning function.................................... 490
Overview................................................ 479
PA SSENGER AIR BA G............................... 57
W
W arr
arr anty
anty........................................................ 41
W
W ashing b
ashing b y hand (car
y hand (car e)
e) ................................ 346
W
W at
at er t
er t ank
ank
see Air-water duct
W
W eat
eat her inf
her inf or
ormation
mation ..................................... 308
W
W eb br ow
eb br owsers
sers
Overview................................................ 321 Wheel c
Wheel c hange
hange
Fi tting a new wheel................................ 387
Lo we ring theve hicle.............................. 388
Preparation............................................ 383
Ra ising theve hicle................................. 384
Re moving a wheel................................. .387
Re moving//tting hub caps..................... 384
Wheel c
Wheel c hange hange
see Emer gency spa rewheel
Wheel rot
Wheel rotation
ation............................................. 382
Wheels
Wheels
Care..................................................... .348
Checking............................................... 374
Checking the tyre pressure (tyre pres-
sure monitoring system)......................... 377
Fi tting.................................................... 387
Flat tyre................................................. 354
Inter changing......................................... 382
MOExtended tyres................................. 354
Noise..................................................... 374
No tes on /tting...................................... 379
Re moving............................................... 387
Re placing...................................... .379, 383
Re placing the hub cap............................ 384 Re
starting the tyre pressure loss
wa rning system...................................... 379
Re starting the tyre pressure monitor-
ing system............................................. 378
Selection...............................................3 79
Snow chains.......................................... 374
St oring................................................... 383
TIREFIT kit.............................................. 356
Ty re pressure (No tes)............................. 375
Ty re pressure loss warning system
(function)............................................... 378
Ty re pressure monitoring system
(function)............................................... 377
Ty re pressure table................................ .376
Unusual handling characteristics............ 374
W
W i-Fi i-Fi
Setting................................................... 298
W W idescr idescr een coc
een coc kpit ins
kpit ins tr
trument displ ay
ument display
Instrument cluster.................................... 14
W
W indo
indo w airbag
w airbag ............................................... 52
W
W indo
indo w
wliTer
liTer
see Side windo ws
W
W indo ws
indo ws
Care...................................................... 348 Index
529
529