ad blue MERCEDES-BENZ B-CLASS HATCHBACK 2021 User Guide

R
Activation of the downloaded system update
by restarting the system
% If automatic soTware updates are activated,
th e system updates will be downloaded auto-
maticall y.
The multimedia system pr ovides a message when
a system update is available.
Yo u ha vethefo llowing selection options:
R Accept and install
The system update will be downloaded in the
background.
R Information
Information about the pending system update
is displa yed.
R Later
The system update can be downloaded man-
ually at a later time.
Deep syst Deep syst em updat
em updates
es
Deep system updates access vehicle or system
settings and can therefore only be car ried out
when theve hicle is stationary and the ignition is
switched o.. If
th e download of a deep system update is com-
ple ted and the downloaded system update is
re ady for installation, you will be informed of this
aTer the next ignition cycle, forex ample.
% Park theve hicle safely in a suitable location
before starting the installation.
Re quirements forth e installation:
R The ignition is switched o..
R Notes and warnings ha vebeen read and
accep ted.
R The electric parking brake is applied.
If all requ irements ha vebeen ful/lled, the down-
loaded system update is installed. The multimedia
system cannot be operated while the downloaded
system update is being installed and vehicle func-
tions are restric ted.
If errors should occur during the installation, the
multimedia system automatically attem ptsto
re store the pr evious version. If restoration of the
pr ev ious version is not possible, a symbol appears
on the media displa y.Consult a quali/ed special-
ist workshop toresol vethe problem. Se
Se
tting up a W
tting up a W i-F
i-Fi ho
i ho tspot
tspot R
R
eq
eq uir
uir ements:
ements:
R T
To se
o se t up t
t up t he W
he Wi-F
i-Fi connection of t
i connection of t he multime-
he multime-
dia sy
dia sy st
st em wit
em wit h e
h ext
xt er
er nal ho
nal ho tspo
tspots:
ts:your vehicle
does not ha vea permanent lyinstalled com-
munication module.
R The device tobe connected supports at least
one of the types of connection described.
Multimedia system: 4 © 5
Settings 5
System
5 Wi-Fi & Bluetooth
A
A ctiv
ctiv ating/deactiv
ating/deactiv ating W
ating Wi-Fi
i-Fi #
Select Wi-Fi.
Connecting t
Connecting t he multimedia syst
he multimedia syst em wit
em with an e
h an ext
xter-
er-
nal ho
nal ho tspo
tspot using W
t using W i-Fi
i-Fi
The type of connection established must be selec-
te d on the multimedia system and on the device
to be connected. 298 298
MBUX multimedia system

Bluet
Bluet
ooth
oo th®
®
connection:
connection:
The menu view and theav ailable functions in the
te lephone menu are in part dependent on the
Blue tooth ®
pro/le of the connected mobile
phone. Full functionality is only available if the
mobile phone supports bo thofthefo llowing Blue-
to oth ®
pro/les:
R PBAP (Phone Book Access Pro/le)
- The contacts on the mobile phone are
shown automatically on the multimedia
system.
R MAP (Message Access Pro/le)
- The mobile phone message functions can
be used on the multimedia system.
Ir re specti veofthis, Blue tooth ®
audio functionality
can byused with any mobile radio unit.
Fo r information on thera nge of functions of the
mobile radio unit tobe connected, see the manu-
fa cturer's operating instructions.
Ne
Ne tw
twor
ork connection:
k connection: The
following cases can lead tothe call being dis-
connected while theve hicle is in motion:
R You switch into a transmission/reception sta-
tion, in which no communication channel is
free.
R The SIM card used is not compatible with the
network available
R A mobile phone with "Twincard" is log ged into
th e network with the second SIM card at the
same time
The multimedia system supports calls in HD
Vo ice ®
for impr oved speech qualit y.Arequ ire-
ment forth is is that the mobile phone and the
mobile phone network pr ovider of the person you
are calling support HD Voice ®
.
Depending on thequ ality of the connection, the
vo ice quality may 0uctuate.
Fu rther information can be obtained from a
Mercedes-Benz service cent reor at: https://
www.mercedes-benz.com/connect 312 312
MBUX multimedia system

T
T
elephone menu ov
elephone menu overerview
view 1
Blue tooth ®
device name of the cur rently con-
nected mobile phone/of the mobile phone
2 Blue tooth ®
device name of the cur rently con-
nected mobile phone/of the mobile phone
(two phone mode)
3 Battery status of the connected mobile phone
4 Signal strength of the mobile phone network
5 Options 6
Device manager
7 Messages
8 Numerical pad
9 Contact sear ch T
T elephon
elephon y oper
y operating modes ov
ating modes overerview
view
Depending on your equipment, thefo llowing tel-
ephony operating modes are available:
R A mobile phone is connected tothe multime-
dia system via Blue tooth ®
. MBUX multimedia system
313
313

R
Two mobile phones are connected with the
multimedia system via Blue tooth ®
(two phone
mode).
- You can use all the functions of the multi-
media system with the mobile phone in the
fo re ground.
- You can receive incoming calls and mes-
sages with the mobile phone in the bac k-
gr ound.
Yo u can inter change the mobile phone in
th efo re ground and backg round.
Connecting a mobile phone
Connecting a mobile phone
R R eq
eq uir
uir ements:
ements:
R Blue tooth ®
is activated on the mobile phone
(see the manufacturer's operating inst ruc-
tions).
R Bluetoo th®
is activated on the multimedia sys-
te m. Multimedia system:
4 © 5
Phone
Searc
Searc hing f
hing for a mobile phone
or a mobile phone #
Select í. #
Select Connect new device.
Connecting a mobile phone
Connecting a mobile phone
Au thorisation follo ws using secure simple pairing. #
Select a mobile phone.
A code is displa yed in the multimedia system
and on the mobile phone. #
If bo thcodes match, con/rm the code on the
mobile phone.
F F unctions in t
unctions in t he t
he telephon
elephon y menu
y menu
In thete lephony menu you ha vethefo llowing
functions, forex ample:
R Making calls, e.g.:
- R Accept a call
- k End call
- i Create conferen. call
- Accepting or rejecting a waiting call R
Managing contacts, e.g.:
- Downloading mobile phone contacts
- Managing thefo rm at of a contact's name
- Saving a contact as a favo urite
R Receiving and sending messages, e.g.:
- Using there ad-aloud function
- Dictating a new message Mer
Mer
cedes me app
cedes me app Mer
Mer
cedes me calls
cedes me calls Making a call via t
Making a call via t
heov
he overerhead contr
head contr ol panel
ol panel
% Mercedes me calls are not possible in every
countr y.Find out at a Mercedes-Benz service
centre if these functions are available in your
countr y. 314
314
MBUX multimedia system

%
Websites cannot be shown while theve hicle is
in motion. Ov
Ov
er
ervie
vie w of smar
w of smar tphone int
tphone int egr
egration
ation Wi
th Sma rtphone Integ ration, you can use cer tain
functions on your mobile phone via the multime-
dia system displa y.
Only one mobile phone at a time can be connec-
te d via Smartphone Integ ration tothe multimedia
system. Also for use with two phone mode with
smartphone integ ration, only one additional
mobile phone can be connec ted using Blue tooth ®
with the multimedia system.
The full range of functions for Smartphone Inte-
gr ation is only possible with an Internet connec-
tion. The appropriate application must be down-
loaded on the mobile phone touse Smartphone
Integ ration. The mobile phone must be switched
on and connec tedto a USB port with theç
symbol on the multimedia system using a suitable
cable.
Apps for Smartphone Integ ration
R Apple CarPlay ® R
Android Auto
% For saf etyre asons, the /rst activation of
Smartphone Integ ration on the multimedia
system must be car ried out when theve hicle
is stationary and the parking brake is applied.
Yo u can start Apple CarPlay ®
or Android Auto
from the device manager.
% Mercedes-Benz recommends disconnecting
th e connecting cable only when theve hicle is
stationar y.
Ov
Ov er ervie
vie w of tr
w of tr ansf
ansferr
erred v
ed v ehicle data
ehicle data
When using Smartphone Integ ration, cer tain vehi-
cle data is transfer redto the mobile phone. This
enables youto get the best out of selected mobile
phone services. Vehicle data is not directly acces-
sible.
The following system information is transmitted:
R SoTware release of the multimedia system
R System ID (anonymised)
The transfer of this data is used tooptimise com-
munication between theve hicle and the mobile
phone. To
do this, and toassign se veralve hicles tothe
mobile phone, a vehicle identi/er is random lyge n-
erated.
This has no connection totheve hicle identi/ca-
tion number (VIN) and is dele ted when the multi-
media system is reset (/ page 301).
The following driving status data is transmitted:
R Transmission position engaged
R Distinction between par ked, standstill, rolling
and driving
R Day/night mode of the inst rument clus ter
R Drive type
The transfer of this data is used toalter how con-
te nt is displa yedto cor respond tothe driving sit-
uation.
The following position data is transmitted:
R Coordinates
R Speed
R Compass direction
R Acceleration direction 322 322
MBUX multimedia system

Symbol
Symbol
DesignationF
Designation Function
unction
Z SettingsS electtomake settings.
© HomeSelecttoreturn tothe home screen.
j MessagingSelecttocall up messaging.
2 Full screen Selecttoswitch tofull sc reen mode. The
following functions and settings are available
in the media menu:
R Connecting extern al data storage media with
th e multimedia system (e.g. using USB or
Blue tooth ®
)
R Playing ba ckaudio or video /les
R Streaming online music A
A
ut
ut hor
hor ising a Blu et
ising a Bluet ooth
oo th®
®
audio de
audio de vice f
vice for media
or media
pla
pla yback
yback R
R
eq
eq uir
uir ements:
ements:
R Bluetoo th®
is activated on the multimedia sys-
te m and audio equipment.
R The audio equipment supports the Blue tooth ®
audio pro/les A2DP and AVRC P.
R The audio equipment is "visible" forot her devi-
ces. Multimedia system:
4 © 5
Media 5
Bluetooth 5
00A5
Wi th Blue tooth ®
audio, you can play back music
/les from an extern al data storage medium, e.g.
yo ur smartphone, using the MBUX multimedia
system. #
Toplay back audio /les using the multimedia
system, authorise theex tern al data storage
medium on the MBUX multimedia system.
A
A ut
ut hor
hor ising a ne
ising a ne w Bluet
w Bluetooth
oo th®
®
audio de
audio de vice
vice #
Select Connect new device . MBUX multimedia system
331
331

#
Select an audio device.
Authorisation starts. A code is displa yed on
th e multimedia system and on the mobile
phone. #
Ifth e codes are identical, con/ rmonthe
audio equipment. #
Select Only as Bluetooth audio device .
The Blu etoo th®
audio equipment is connected
with the multimedia system.
Connecting pre
Connecting pre viousl viously aut
y author
horised Bluet
ised Bluet ooth
oo th®
®
audio eq
audio eq uipment
uipment #
Select a Blu etoo th®
audio device from the list.
The connection is being established. Ov
Ov
er
ervie
vie w of t
w of t he symbols and functions in t
he symbols and functions in t he r
he radio menu
adio menu Symbol
Symbol
DesignationF
Designation Function
unction
© HomeSelecttoreturn tothe home screen.
j MessagingSelecttocall up messaging.
00F5/00F6 Skipforw ards/bac kS electtoskip tothe next or tothe pr evious station. 332
332
MBUX multimedia system

VIN and engine number
VIN and engine number
1
Engine number stamped into the crankcase
2 VIN (vehicle identi/cation number) stamped
into the crossmember
3 VIN (vehicle identi/cation number) as a label
at the lo wer edge of the windscreen
Onl
Onl y f y for cert
or cert ain countr
ain countr ies:
ies:the VIN as a label at
th e lo wer edge of windscreen 3is only available
in some countries. Further information can be
obtained at a quali/ed specialist workshop. Oper
Oper
ating
ating 0uids
0uids N
No
ot
tes on oper
es on oper ating
ating0uids
0uids &
W
WARNING
ARNING Risk of injury from operating
0uids harmful toyour health
Operating 0uids may be poisonous and harm-
ful toyour health. #
Obser vethete xt on the original contain-
ers when using, storing or disposing of
operating 0uids. #
Always store operating 0uids sealed in
th eir original containers. #
Alwayske ep children away from operat-
ing 0uids. +
ENVIR ENVIR
ONMENT
ONMENT AL NO
AL NOTE
TEPollution of the
environment due toirre sponsible disposal
of operating 0uids Incor
rect disposal of operating 0uids can
cause considerable damage tothe environ-
ment. #
Dispose of operating 0uids in an environ-
mentally responsible manner. Operating 0uids include
thefo llowing:
R fuels
R DeNOx agent AdBlue ®
forex haust gas aTer-
treatment
R lubricants
R coolant
R brake 0uid
R windscreen washer 0uid
R climate cont rol system refrigerant
Only use products appro vedby Mercedes-Benz.
Damage caused bythe use of products that ha ve
not been app rove d is not co veredby the
Mercedes-Benz warranty or goodwill gestu res.
The operating 0uids appr ovedby Mercedes-Benz
can be identi/ed bythefo llowing inscriptions on
th e container:
R MB-F reigabe (e.g. MB-F reigabe 229.51)
R MB-Appr oval (e.g. MB -Appr oval 229.51) 396 396
Te
ch nical data

Ac
cording toEuropean standard EN 16942 you
can /nd the compatibility indications at thefo l-
lowing locations:
R Ontheve hicle on the information label in the
fuel /ller 0ap (/ page 191)
R Onthe fuel dispenser or pump nozzle suitable
fo ryo ur vehicle thro ughout Europe
Inf
Inf or ormation on lo
mation on lo w outside t
w outside tem
emper
per atur
atur es
es
Re fuel your vehicle with as much winter diesel fuel
as possible at the beginning of winter.
Before changing overto winter diesel fuel, the fuel
ta nk should be em pty, if possible. When /rst refu-
elling wi thwinter diesel fuel, keep the fuel le vel
lo w, e.g. toreser veleve l. The fuel tank can be /l-
led as usual when next refuelling.
Fu rther information on fuel can be obtained at a
/lling station or a quali/ed specialist workshop.
T
T ank cont
ank cont ent and fuel r
ent and fuel r eserve
eser ve
No
No t f
t for plug-in h
or plug-in h ybr
ybrid:
id:
The tota l capacity of the fuel tank may vary,
depending on theve hicle equipment. F
F
uel t
uel t anktot
ank total capacity
al capacity Model
Model
B 200 4MATIC
B 220 d 4MATIC
B 250 4MATIC
51.0 lit
res
B 220 d
B 250 43.0 litres
or
51.0 litres
All other model s4 3.0 litres R R
eserv
eserv e fuel t
e fuel t ank
ank Model
Model
All models
5.0 litres T T
o
o t
tal capacity of fuel t
al capacity of fuel t ank (plug-in h
ank (plug-in hybr
ybrid)
id) Model
Model
B 250
e3 5.0 litres F F
uel t
uel t ank r
ank r eserv
eserv e (plug-in h
e (plug-in h ybr
ybrid)
id) Model
Model
B 250
e5 .0 litres A A
dBlue
dBlue ®
®
(v
(vehicles wit
ehicles wit h a diesel engine onl
h a diesel engine onl y)
y) N
No
ot
tes on A
es on A dBlue
dBlue®
®
Obser vethe no tes on operating 0uids
(/ page 396).
Ad Blue ®
is a water-soluble 0uid forth e NOx
ex haust gas aTertreatment of diesel engines.
It may be improper or punishable in some coun-
tries tooperate a vehicle that uses no AdBlue ®
or
one that does not comply with the speci/cations
of these operator's manual.
* NO
NO TE
TEMalfunctions due tothe dilution of
Ad Blue ®
or the use of additive-enhanced
Ad Blue ® The function of
the NOx exhaust gas aTer-
treatment can be impaired bythe use of
unsuitable denoxi/cation agents. 400
400
Te
ch nical data

#
Only use AdBlue ®
in acco rdance with
ISO 22241. #
Do not dilu teAd Blue ®
wi th wa ter. #
Do not use additive-enhanced AdBlue ®
. *
N
NO OTE
TE Dama geand malfunctions due to
impurities in AdBlue ® Consequences of impurities in
AdBlue ®
:
R increased emission values
R damage tothe catalytic con verter
R NOx exhaust gas aTertreatment malfunc-
tions #
Avoid impurities in AdBlue ®
. Ad
Blue ®
residues cr ystallise aTer a period of
time, and contaminate the sur faces with which
th ey come into contact. Clean the dirty sur faces
with water as soon as possible.
When you open theAd Blue ®
tank, small amounts
of ammonia vapour may escape. Do not inhale any ammonia
vapours that may be released. Only
/ll theAd Blue ®
tank in well-ventilated areas.
A
A dBlue
dBlue ®
®
/lling
/lling capacity and consump
capacity and consump tion
tion
Tot
Tot al capacity of A
al capacity of A dBlue
dBlue®
®
t
tank
ank Model
Tot
Mode lT otal capacity
al capacity
All model s2 3.8 litres A
A
dBlue
dBlue ®
®
consump
consump tion
tion
The average AdBlue ®
consu mption is between 1%
and 5% of fuel consum ption. Like fuel consump-
tion, AdBlue ®
consu mption is high lydependent
upon driving style and operating conditions. For
th is reason, your vehicle's actual consu mption /g-
ures under da y-to -day operating conditions may
di.er from the consum ption /gures calculate d.
The frequency at which you will ha veto to p up
Ad Blue ®
will also vary. Ha vetheAd Blue ®
supply
ch ecked at a quali/ed specialist workshop before
making jou rney s outside of Europe. Before a lon-
ge r st ayoutside of Europe, consult a quali/ed
specialist workshop. A
A
dBlue
dBlue ®
®
r
rang
ang e and
e and /ll
/lllev
level
el
The AdBlue ®
/ll le vel and range can be displa yed
via the on-board computer. The AdBlue ®
range
sh ow n depends strongly on the driving style and
operating conditions. The actual range can there-
fo re deviate from thera nge cur rently displa yed in
th e on-board computer. The information supplied
in the operator's manual rega rding there ser ve
qu antity at the /rst display warning and on the
minimum top-up quantity when the fuel tank is
em pty is also tobe understood as guide values. Engine oil
Engine oil
N
No
ot
tes on engine oil
es on engine oil
Obser vethe no tes on operating 0uids
(/ page 396). Te
ch nical data
401
401