engine MERCEDES-BENZ B-CLASS HATCHBACK 2021 Owners Manual

Changing bulbs (only
forve hicles with hal-
ogen headlamps) ......................................... 147
Wi ndsc reen wipers and windscreen
wa sher system ............................................ 149
Mir rors ........................................................ 153 Climat
Climat
e contr
e control ol........................................... 157 157
Overview of climate control systems ............ 157
Operating the climate control system .......... 158 Dr
Dr
iving and par
iving and par king
king..................................... 166 166
Driving ........................................................1 66
DY NAMIC SELECT switch ........................... .182
Manual transmission ................................... 185
Au tomatic transmission .............................. .187
Fu nction of the 4MATIC ...............................1 91
Re fuelling .................................................... 191
Charging the high-voltage battery (plug-in
hy brid) ........................................................ 198
Pa rking .......................................................2 15
Driving and driving saf ety sy stems ............... 223
Tr ailer hitch ................................................ .273
Bicycle rack function ................................... 277
Ve hicle towing instructions .......................... 279 Ins
Ins
tr
trument displa
ument displa y and on-boar
y and on-boar d com-
d com-
put
put er
er........................................................... 280 280
No tes on the inst rument display and on-
board computer .......................................... 280
Overview of instrument display .................... 281
Overview of buttons on the steering wheel ... 282
Operating the on-board computer ................2 82
Fu nction of the po wer me ter (plug-in
hy brid) ........................................................ 284
Fu nction of the electric mo tor po wer
av ailability displ ay(plug-in hybrid) ................ 284
Displaying the po wer me ter (plug-in
hy brid) ........................................................ 285
Overview of displa ysinthe inst rument
display ........................................................ 285
Head-up display .......................................... 285 MBUX multimedia syst MBUX multimedia syst
em
em........................... .288
288
Overview and operation ............................... 288
System settings .......................................... 297
Plug-in hybrid settings ................................ .301
Na vigation .................................................. .302
Te lephone ................................................... 311
Mercedes me app ....................................... 314 Mercedes-Benz emer
gency call system ....... 323
Ra dio & media ............................................ .330
Sound settings ............................................ 335 Maint Maint
enance and car
enance and car e
e................................. 336 336
ASS YST PLUS service inter val display .......... 336
Engine compartment ................................... 337
Cleaning and care ....................................... 343 Br Br
eakdo
eakdo wn assist
wn assist ance
ance................................. 352 352
Emer gency .................................................. 352
Flat tyre ...................................................... 354
Battery (vehicle) .......................................... 361
To w- starting or towing away ........................ 365
Electrical fuses ............................................ 371 Wheels and tyr Wheels and tyr
es
es......................................... 374 374
No tes on noise or unusual handling char-
acteristics ................................................... 374
No tes on regula rly inspecting wheels and
tyres .......................................................... .374
No tes on snow chains ................................. 374
Ty re pressure .............................................. 375 Contents
3 3

Wheel
change ............................................. 379
Emer gency spa rewheel .............................. .389 T
T
ec
ec hnical dat
hnical dat a
a............................................. 392 392
No tes on tech nical data .............................. 392
On-board electronics ................................... 392
Re gula tory radio identi/cation and no tes ..... 394
Ve hicle identi/cation plate, VIN and
engine number overview .............................. 394
Operating 0uids ...........................................3 96
Ve hicle data ................................................ 405
Tr ailer hitch ................................................ .408 Displa Displa
y messag
y messag es and w
es and war
arning/indicat
ning/indicat or
or
lam
lam ps
ps.......................................................... 412 412
Display message s ....................................... .412
Wa rning and indicator lamps ....................... 479 Inde
Inde
x
x.......................................................... 495 4954
4
Contents

1
0025 ABS →
491
2 003E003D Turn signal lights →
140
3 0077 Tyre pressure monitoring system →
493
4 003D Electrical fault →
484
5 L Distance warning →
490
6 004D Brakes (yellow) →
488
7 004D Brakes (red) →
488
8 0024 Electric parking brake (yellow) →
488
9 0024 Electric parking brake (red) →
488
A 00B9 Engine diagnostics →
484
B 0028 Diesel engine: preglow
C 005A Indicator lamp inoperative
D 005E Rear fog light →
139 E
0057 High beam →
140
0058 Low beam →
138
0060 Standing lights →
138
F 00BB ESP®
OFF →
491
00E5 ESP®
→
491
G 0075 Restraint system →
480
H Fuel le vel →
281
I 00D4 Reser vefuel wi thfuel /ller 0ap location
indicator →
484
J Ù Powe r steering →
483
K 00E9 Seat belt →
480
L ï Trailer hitch →
483 At
a glance – Indicator and warning lamps (standard)
13
13

1
003E003D Turn signal lights →
140
2 ï Trailer hitch →
483
3 0075 Restraint system →
480
4 00BB ESP®
OFF →
491
00E5 ESP®
→
491
5 005E Rear fog light →
139
6 0057 High beam →
140
0058 Low beam →
138
0060 Standing lights →
138
7 005A Indicator lamp inoperative
8 ÿ Coolant temp erature →
484
9 Coolant temp erature display →
281
A 0024 Electric parking brake (yellow) →
488
B 004D Brakes (yellow) →
488 C
003D Electrical fault →
484
D L Distance warning →
490
E 0025 ABS →
491
F Ù Powe r steering →
483
G 0077 Tyre pressure monitoring system →
493
H 0028 Diesel engine: preglow
I 00D4 Reser vefuel wi thfuel /ller 0ap location
indicator →
484
J Fuel le vel →
281
K 0024 Electric parking brake (red) →
488
L 00E9 Seat belt →
480
M 004D Brakes (red) →
488
N 00B9 Engine diagnostics →
484
O ä Indicator lamp inoperative At
a glance – Indicator and warning lamps (widescreen cockpit)
15
15

Pr
ot
Pr otection of t
ection of t he en
he envir
vironment
onment
+ ENVIR
ENVIR
ONMENT
ONMENT AL NO
AL NOTE
TE Environmental
damage due tooperating conditions and
personal driving st yleThe pollutant emission of
theve hicle is
directly related tothewa yyo u operate the
ve hicle.
Operate your vehicle in an environmentally
re sponsible manner tohelp pr otect the envi-
ro nment. Please obser vethefo llowing recom-
mendations on operating conditions and per-
sonal driving st yle.
Oper
Oper ating conditions:
ating conditions: #
Make sure that the tyre pressure is cor-
re ct. #
Do not car ryany unnecessary weight
(e.g. roof luggage rack s once you no lon-
ge r need them). #
Adhere tothe service inter vals.
A regula rly serviced vehicle will cont rib-
ute toenvironmental pr otection. #
Always ha vemaintenance workcar ried
out at a quali/ed specialist workshop.
P
P er
er sonal dr
sonal dr iving s
iving stytyle:
le: #
Do not depress the accelerator pedal
when starting the engine. #
Do not warm uptheve hicle while sta-
tionar y. #
Drive carefully and maintain a suitable
distance from theve hicle in front. #
Avoid frequent, sudden acceleration and
braking. #
Change gear in good time and use each
ge ar only up to00C3 of its maximum
engine speed. #
Switch o. theve hicle in stationary traf-
fi c, e.g. byusing the ECO start/s top
function. #
Drive in a fuel-e1cient manner. Obse rve
th e ECO display for an economical driv-
ing style. Plug-in h Plug-in h
ybr
ybrid
id
+ ENVIR
ENVIR
ONMENT
ONMENT AL NO
AL NOTE
TEEnvironmental
pollution caused byirre sponsible disposal
of the high-voltage battery A high-voltage battery contains materials
which are harmful
tothe environment. #
Dispose of faulty high-voltage batteries
at a quali/ed specialist workshop. T T
ak
ak e-bac
e-bac k of end-of-lif
k of end-of-lif e v
e vehicles
ehicles
EU countr EU countr ies only:
ies onl y:
Mercedes-Benz will take back your end-of-life
ve hicle for environment-fri endly disposal in
accordance with the European Union (EU) End-of-
Life Vehicles Directi ve.
A network of vehicle take -back points and dis-
mantlers has been established foryo uto return
yo ur vehicle. You can lea veit at any of these
points free of charge . This makes an impor tant
cont ribution toclosing there cycling circle and
conserving resources. 24 24
Gene
ral no tes

*
N
NO
OTE
TE Damage totheve hicle due todriv-
ing toofast and due toimpacts tothe
ve hicle underbody or suspension compo-
nents In
thefo llowing situations, in particular, there
is a risk of damage totheve hicle:
R theve hicle becomes grounded, e.g. on a
high kerb or an unpa vedro ad
R theve hicle is driven toofast ove r an obsta-
cle, e.g. a kerb, speed bump or po thole
R a heavy object st rike sth e underbody or
suspension components
In situations such as these, damage tothe
body, underbody, suspension components,
wheels or tyres may not be visible. Compo-
nents damaged in this wa y can un expectedly
fa il or, in the case of an accident, may no lon-
ge r absorb there sulting forc e as intended.
If th e underbody panelling is damaged, 0am-
mable materials such as lea ves, grass or twigs
can collect between the underbody and the
underbody panelling. These materials may ignite if
they come into contact with hot parts
of theex haust system. #
Have theve hicle checked and repaired
immediately at a quali/ed specialist
wo rkshop.
or #
If driving saf ety is impaired while con-
tinuing your journe y,pull over and stop
th eve hicle immediatel y,while paying
attention toroad and tra1c conditions,
and contact a quali/ed specialist work-
shop. Plug-in h Plug-in h
ybr
ybr id
id
Hybrid vehicles ha vea combustion engine and an
elect ric mo tor.The energy supply for operating
th eve hicle elect rically is pr ovided bythe high-
vo ltage on-board electrical system. &
D
DAN
AN GER
GER Risk of death and /re due to
modi/ed and/or damaged components of
th e high-voltage on-board electrical sys-
tem
The vehicle's high- voltage on-board electrical
system is under high voltage. If you modify
component parts in theve hicle's high- voltage
on-board electrical system or touch damaged
component parts, you may be electrocuted. In
addition, modi/ed and/or damaged compo-
nents may cause a /re.
In theeve nt of an accident or impact tothe
ve hicle underbod y,components of the high-
vo ltage electrical system may be damaged
although the damage is not visible. #
Never make any modi/cations tothe
high- voltage on-board electrical system. #
Do not switch on or use theve hicle if its
high- voltage on-board electrical system
components ha vebeen modi/ed or dam-
aged. 28 28
General no
tes

#
Neverto uch damaged components of
th e high-voltage on-board electrical sys-
te m. #
ATer an accident, do not touch any com-
ponents of the high-voltage on-board
electrical system. #
ATer an accident, ha vetheve hicle trans-
por tedawa y. #
Have the components of the high-voltage
on-board electrical system checked at a
qu ali/ed specialist workshop and
re placed if necessar y. The components of
the high-voltage on-board
electrical system are mar ked with yellow warning
stic kers. The cables of the high-voltage on-board
electrical system are orange.
Ve hicles with hybrid systems generate signi/-
cant lyless noise when stationary and when being
driven than vehicles with combustion engines.
When driving in elect ric mode, theve hicle may
not be heard by otherroad users due tothe signif-
icantly reduced noise generated. It is
forth is reason that theve hicle is equipped
with a sound generator, which ser ves as an acous-
tic vehicle alerting system (A VAS). Declar
Declar
ations of conf
ations of conf or
ormity and not
mity and not es on dr
es on driving
iving
in
in di.er
di.er ent
entcountr
countr ies
ies Electr
Electr
omagne
omagne tic com
tic compatibility
patibility The elect
romagnetic compatibility of theve hicle
components has been checked and certi/ed
according tothe cur rently valid version of Regula-
tion UN-R 10. v
v
ehicle inst
ehicle inst alled r
alled radio com
adio com ponents
ponents Onl
Onl
y f
y for EU and EFT
or EU and EFT A countr
A countries and countr
ies and countr ies t
ies that
hat
r
r ecognise t
ecognise t he EU manuf
he EU manuf actur
acturer's declar
er's declar ation of
ation of
conf
conf or
ormity:
mity: The
following information applies toall wireless
components of theve hicle and of the information systems and communication devices integ
rated in
th eve hicle:
The manu facturers of the wireless components
ensure that all wireless components ins talled in
th eve hicle comply with Directi ve2014/53/EU.
The full texts of the EU declarations of conformity
are available at thefo llowing web address:
https://moba.i.daimler.com/mar kets/ece-r ow/
baix/cars/certi/cates-of-con form ity/en_GB/
index.html General no
tes
29
29

Manufacturer:
BRANO a.s.
747 41 Hradec nad Mor
avicí, Opavská 1000,
The Czech Republic
ID No.: 64-387-5933
VA T No.: CZ64-387-5933
her ewith declares under our sole responsibility
th at the product:
2. a)
Na me:
Jack
Ty pe, Number:
A) A 164 580 02 18, A 166 580 01 18
B) A 240 580 00 18
C) A 639 580 02 18
D) A 639 580 03 18
E) A 910 580 00 00
F) A 247 580 00 00, A 293 580 00 00
Ye ar of manu facture: 2020
Complies with all releva nt pr ovisions Directive No. 2006/42/EC
b)
Description and purpose of use:
Car jack is intended solely
for liTing of the con-
cr ete car, in accordance with the inst ruction label
on the car jac k.
3.
Re fere nces of ha rmonized and other standards or
speci/cations
ISO 4063, EN ISO 14341- A,AS 2693, DBL
8230.10, DBL 7382.20, DBL 7392.10, DBL
8451.15, MBN 10435,
Te ch nical documentation of the product is stored
at the premise of the manufacturer. The person
re sponsible for assembling thete ch nical docu-
mentation of the product: Head of theTe ch nical
Department Brano a.s.
4.
Hradec nad Mor avicí
Place
5.
05.10.2020 Date
Engineer
PetrPe tr
[Signature]
Director of division ZZ TIREFIT kit TIREFIT kit
Copy and translation of
the original declaration of
conformity:
EC declar EC declar ation of conf
ation of conf or
ormity
mity , CE
, CE
We,
Aircom Automotive Sp. z o.o. Sp. k.
ul. Fabryc zna 20B
55-080 Pietrzyk owice
Po land (1)
hereby declare that the product
Electric air pump (2)
Models: (3) General no
tes
37 37

*
N
NO
OTE
TE Damage caused byobjects in the
fo ot we ll or behind the seat The automatic adjustment of
the seat position
may result in damage tothe seat and/or the
object. #
Stow objects in a suitable place. R
R
e
ev
ver
er sing t
sing t he PRE-S
he PRE-S AFE
AFE®
®
syst
syst em measur
em measur es
es If an accident did not occur,
the pre-em ptive
measures that we re ta ken are reve rsed.
Yo u will need toper form certain settings yourself. #
Ifth e seat belt pre-tensioning is not reduced,
mo vethe seat backrest back slightl y.
The locking mechanism releases. F
F
unction of PRE-S
unction of PRE-S AFE
AFE ®
®
PL
PL US (anticipat
US (anticipat or
ory occu-
y occu-
pant pr ot
pant pr otection plus)
ection plus) PRE-SAFE
®
PLUS can de tect cer tain impacts, par-
ticular lyan imminent rear impact, and take pre-
em ptive measures toprotect theve hicle occu- pants. These measures cann
otnecessarily pre-
ve nt an imminent impact.
PRE-SAFE ®
PLUS can implement thefo llowing
measures independently of each other:
R Tightening the seat belts on the driver's seat
and front passenger seat.
R Activating there ar hazard warning lights at a
higher 0ashing frequency.
R Increasing brake pressure when theve hicle is
stationar y.This brake application is cancelled
automatically when theve hicle pulls away.
If an accident did not occur, the pre-em ptive
measures that we re ta ken are reve rsed.
Syst
Syst em limits
em limits
The system will not initiate any action in thefo l-
lowing situations:
R when reve rsing
or
R when theve hicle is towing a trailer and there
is a risk of a rear impact The system will not initiate any braking application
in thefo llowing situations:
R whilst driving
or
R when entering or exiting a parking space while
using Active Parking Assist A A
ut
ut omatic measur
omatic measur es
esaTer
aTer an accident
an accident
Depending on the type and se verity of the acci-
dent, and depending on theve hicle's equipment,
th efo llowing measures can be implemented, for
ex ample:
R automatic braking (post-collision brake)
R activating the hazard warning lights
R triggering an automatic emer gency call
(/ page 325)
R switching o. the engine
To start theve hicle again, switch theve hicle
o. and on once more (/ page 169). Depend-
ing on the type and se verity of the accident,
yo u may no longer be able tostart theve hicle.
R switching o. the fuel supply 60
60
Occupant saf
ety

Loc
Loc
king t
king t he fr
he front passeng
ont passeng er door and r
er door and r ear doors
ear doors #
Insert a suitable object, e.g. the emer gency
ke y,into opening 1onthe door loc k. #
T
To loc
o loc k t
k the
he leT-hand
leT-hand side of t
side of the v
he vehicle:
ehicle: turn
th e emer gency key anti-clockwise as far as it
will go. #
T
To loc
o loc k t
k the r
he r ight-hand side of t
ight-hand side of t he v
he vehicle:
ehicle: turn
th e emer gency key clockwise as far as it will
go.
If th e loc ked door is then closed, it can no longer
be opened from the outside. Load com
Load com
par
partment
tment Opening t
Opening t
he t
he tailg
ailgate
ate &
D
DAN
AN GER
GER Risk of poisoning from exhaust
ga ses
Combustion engines emit poisonous exhaust
ga ses, such as carbon monoxide. Exhaust
ga ses can enter theve hicle interior if theta il-
ga te is open when theve hicle is running,
especially if theve hicle is in motion. #
Always switch o. theve hicle before
opening theta ilgate. #
Never drive with theta ilgate open. *
N
NOOTE
TE Damage totheta ilgate caused by
obstacles abo vetheve hicle The
tailgate swings rear wa rds and upwards
when it is opened. #
Make sure that there is su1cient space
behind and abo vetheta ilgate. #
Pull theta ilgate handle. #
V
Vehicles wit
ehicles wit h HANDS-FREE A
h HANDS-FREE A CCESS:
CCESS:make a
kicking mo vement with your foot below the
bumper (/ page 92). Opening and closing
89
89