MERCEDES-BENZ B-CLASS HATCHBACK 2022 Owners Manual


To play back audio Nles using t he multimedia
system, authorise the external data storage
medium on the MBUX multimedia system.
Authorising a new Bluetooth n
audio de
vice
Select Connect new device. 
Select an audio device.
A

uthorisation starts. A code is displayed on
the multimedia system and on the mobile
phone. 
If the codes are identical, conNr
m on the
audio equipment. 
Select Only as Bluetooth audio device .
The Blue
toothn
audio equipment is connected
with the multimedia system.
Connecting previously authorised Bluetooth n
audio eq
uipment 
Select a Bluetooth n
audio de
vice from the list.
The connection is being established. 338
MBUX multimedia system

Overview of the symbols and functions in the radio menu
Symbol
DesignationFunction
© HomeSelect to return to the home screen.
L MessagingSelect to call up messaging.
û/ü Skip forwards/back Select to skip to the next or to the previous station.
= SettingsSelect to have further options shown. Settings can be made to the following additional
functions, f
or example:
= Navigation and traPc announcements
= Frequency Nx function
= Radio additional text
= Emergency warnings
The setting options are country-dependent.
 Full screenSelect to switch to the DAB slide show.
This function is no

t available in all countries.
c Silent functionSelect to switch oM t
he sound.
t Store radio stations Select to save a station in the presets. MBUX multimedia system
339

Symbol
DesignationFunction
 Station listSelect to have the station list shown.
ª SearchSelect to search in the active menu. You can search for artists, genres or moods, for
e xample. Additional functions of TuneIn radio
%
A relatively large volume of data can be trans-
mitt
ed when using TuneIn radio. Symbol
DesignationFunction
= SettingsThe following additional settings are available in
t

he TuneIn radio menu:
= Selecting stream
= Logging on to or out of the TuneIn account

Symbol
DesignationFunction
6/8 Play/PauseSelect to start, stop or continue playback.
5 BrowseSelect to choose a category and then a radio sta-
tion. Depending on the frequency band selected,
diMer -
ent functions are available to you.
Select the desired frequency band in the radio
menu head runner. Calling up TuneIn Radio
Requirements:
= A Mer

cedes me account is available.
= The vehicle is connected with the Mercedes
me account.
= The TuneIn Radio service is activated in the
Mercedes me Portal.
= The data volume is available.
Depending on the country, data volume may
need to be purchased. =
A f
ast Internet connection for data transmis-
sion free of interference.
% Data volume can be purchased dir
ectly from
a mobile phone network provider via the
Mercedes me Portal.
% The functions and services are country-
dependent. F

or more information, consult a
Mercedes-Benz service centre.
Multimedia system: 4 © 5
Radio 
Select TuneIn Radio .
The T
uneIn menu appears. The last station set
starts playing.
% The connection quality depends on the local
mobile phone r
eception. Sound settings
Overview of functions in the sound menu
The setting options and functions available
depend on t

he sound system Ntted. You can Nnd
out which sound system is Ntted in your vehicle in
the Digital Owner's Manual.
Standard sound system and Advanced sound sys-
tem
The following functions are available:
= Equaliser
- Treble, mid-range and bass
= Balance and fader
= Volume:
- Automatic adjustment MBUX multimedia system
341

Burmester
n
sur round sound system and
Burmester n
high-end 3D surround sound system
The following functions are available: = Equaliser
- Treble, mid-range and bass
= Balance and fader
= Sound focus
= VIP seat (Burmester n
high-end 3D surround
sound system only)
= Sound proNles
= Volume:
- Automatic adjustment 342
MBUX multimedia system

ASSYST PLUS service interval display
Function of the ASSYST PLUS service interval dis-
pla
y The ASSYST PLUS service interval display on the
ins
trument display informs you of the time or dis-
tance remaining before the next service due date.
You can hide this service display using the back
button ( on the steering wheel.
Depending on how the vehicle is used, the
ASSYST PLUS service interval display may shorten
the service interval, e.g. in the following cases:
= Mainly short-distance driving
= When the engine is osen les idling for long
periods
= In the event of frequent cold start phases
= Vehicles with a diesel particulate Nlter: in the
event of frequently interrupted regeneration of
the diesel particulate Nlter
Mercedes-Benz recommends avoiding such oper-
ating conditions. You can obtain information concerning the servic-
ing of y

our vehicle from a qualiNed specialist
workshop, e.g. a Mercedes-Benz service centre. Displaying the service due date
On-board computer:
4 Service 5
ASSYST PLUS
The ne

xt service due date is displayed. 
To exit the display: pr
ess the back button
( on the steering wheel.
Bear in mind the following related topic:
= Oper

ating the on-board computer
( page 288). Information on regular maintenance work
*
NOTE Pr
emature wear through failure to
observe service due dates Maintenance work which is not carried out at
t
he right time or incompletely can lead to
increased wear and damage to the vehicle. 
Adhere to the prescribed service inter-
v
als. 
Always have the prescribed maintenance
w

ork carried out at a qualiNed specialist
workshop. Notes on special service requirements
The prescribed service interval is based on nor-
mal oper

ation of the vehicle. Have the mainte-
nance work carried out more osen than prescri-
bed if operating conditions are diPcult or the
vehicle is subject to increased stress.
The ASSYST PLUS service interval display is only
an aid. It is the responsibility of the driver of the
vehicle to have maintenance work carried out
more osen than prescribed due to actual operat-
ing conditions and/or stresses.
Examples of arduous operating conditions:
= Regular city driving with frequent intermediate
stops
= Mainly short-distance driving Maintenance and care
343

=
F requent operation in mountainous terrain or
on poor road surfaces
= When the engine is osen les idling for long
periods
= Operation in particularly dusty conditions
and/or if air-recirculation mode is frequently
used
In these or similar operating conditions, have the
interior air Nlter, air Nlter, engine oil and oil Nlter,
for example, changed more frequently. Check the
tyres more frequently if the vehicle is operated
under increased stress. Further information can
be obtained at a qualiNed specialist workshop. Battery disconnection periods
The ASSYST PLUS service interval display can cal-
culat
e the service due date only when the battery
is connected. 
Display and note down the service due date
on t

he instrument display before disconnect-
ing the battery ( page 343). Maintenance Management
Notes about Maintenance Management
If the Maintenance Management service is activa-
t

ed, relevant data is automatically transferred to
the Mercedes-Benz customer centre.
The customer centre transmits the data to the
service partners that you have entered on the
Mercedes me website at: http://
www.mercedes.me. You will then receive individ-
ual recommendations regarding the maintenance
of your vehicle.
% The calculation of the optimal transmission
time of t

he maintenance request to the
service partner is subject to technical limita-
tions that may cause the maintenance recom-
mendation to be perceived as too early or too
late or not to be made at all. In this case, you
can conveniently arrange a maintenance
appointment with the customer centre via the
maintenance reminder in the multimedia sys-
tem.
% Maintenance Management and the mainte-
nance r

eminder in the multimedia system are
not available in every country. Contact a Mercedes-Benz service centre to Nnd
out
whe
ther this function is available in your coun-
try. Data transferred when using Maintenance Man-
ag

ement When the service is activated, relevant data is
aut

omatically transferred to determine the
required scope of maintenance as well as fault
detection and fault rectiNcation. Details on data
transfer can be found in the data protection infor-
mation for the Mercedes me connect services.
These can be found at: http://www.mercedes.me
under "My Mercedes me account", "Terms of use".
% The maintenance reminder in the multimedia
sy

stem is not available in all countries. Telediagnostics
Notes about Telediagnostics
%
This service is not available in all countries.
The vehicle can detect if certain wear parts need
t
o be replaced or if malfunctions have occurred in 344
Maintenance and care

vehicle systems. If the Telediagnostics service is
activ ated, relevant data is automatically transmit-
ted to the manufacturer. If fault conditions are
detected by the vehicle system self-diagnosis, the
system transmits recommendations for action to
the Mercedes-Benz customer centre depending
on the fault detected. The customer centre trans-
mits the data to the service partner that you have
entered on the Mercedes me website at: http://
www.mercedes.me.
For selected faults, the notiNcation that a mal-
function has been detected may appear in the
multimedia system with a request to contact the
Mercedes-Benz Customer Centre. From this mes-
sage, a call can be made directly to the customer
centre for assistance.
% The transmission of a no
tiNcation to the multi-
media system depends on the country, vehi-
cle model and equipment and requires a fast
data connection, over which the service pro-
vider has no inOuence.
% Reliable fault detection is subject to technical
limit
ations. Therefore, only a limited selection
of faults can be detected and recommenda-
tions for action transmitted to the customer centre and the service partners. Mercedes-
Benz A
G is continuously working on the
expansion of this service. The fault detection
depends on the country, vehicle model and
equipment. Data transferred when using Telediagnostics
When the service is activated, relevant data is
aut

omatically transferred to determine the next
required scope of maintenance as well as fault
detection and fault rectiNcation.
Details on data transfer can be found in the data
protection information for the Mercedes me con-
nect services. These can be found at: http://
www.mercedes.me under "My Mercedes me
account", "Terms of use".
% The scope of the data transmitted depends on
t

he vehicle model and equipment. For techni-
cal reasons, not all data is available at all
times. Engine compartment
Active bonnet (pedestrian protection)
Operation of the active bonnet (pedestrian protec-
tion)
In cer

tain accident situations, the actuation of the
active bonnet reduces the risk of injury to pedes-
trians. The rear area of the bonnet is raised by
approximately 70 mm.
For the drive to the workshop, reset the actuated
active bonnet yourself (  page 345).
Aser the active bonnet has been actuated, pedes-
trian protection may be limited.
Have the full functionality of the active bonnet
restored in a qualiNed specialist workshop.
Resetting the active bonnet &
WARNING Risk of bur
ns from hot compo-
nent parts in the engine compartment
Certain component parts in the engine com-
par
tment can be very hot, e.g. the engine, the
cooler and parts of the exhaust system. Maintenance and care
345


Allow the engine to cool down and only
t ouch component parts described in the
following. 
With your hand Oat, push do
wn active bonnet
1 in the area around the hinges on both
sides (arrows).
In doing so, the actuator is depressurised and
you may hear a hissing sound.
The engine bonnet must engage in position. 
If the active bonnet can be raised slightly at
t

he rear in the area of the hinges, repeat the
step until it engages correctly. Opening and closing the bonnet
&
DANGER Risk of f
atal injuries when carry-
ing out maintenance work during the
charging process
During the charging process, the high-voltage
on-boar
d electrical system is under high volt-
age. 
Do not perform any maintenance work
dur

ing the charging process. &
WARNING Risk of accident due t
o driving
with the bonnet unlocked
The bonnet may open and block your view. 
Never release the bonnet when driving. 
Before every trip, ensure that the engine
bonne

t is locked. &
WARNING Risk of accident and injur
y
when opening and closing the bonnet
The bonnet may suddenly drop into the end
position. There is a risk of injury for anyone in the
engine bonne

t's range of movement. 
Do not open or close the bonnet if there
is a per

son in the bonnet's range of
movement. &
WARNING Risk of bur
ns when opening the
bonnet
If you open the bonnet in the event of an over-
heat
ed engine or Nre in the engine compart-
ment, the following situations may occur:
= You may come into contact with hot gases.
= You may come into contact with other
escaping hot operating Ouids. 
Before opening the bonnet, allow the
engine t
o cool down. 
In the event of a Nr
e in the engine com-
partment, keep the bonnet closed and
call the Nre service. 346
Maintenance and care

&
WARNING Risk of injur y due to moving
parts
Components in the engine compartment may
continue t
o run or start unexpectedly even
when the drive system is switched oM.
Observe the following if you must open the
bonnet: 
Switch oM t
he vehicle. 
Never touch the danger zones surround-
ing mo

ving components, e.g. the rotation
area of the fan. 
Remove jewellery and watches. 
Keep items of clothing and hair away
fr
om moving parts. &
WARNING Risk of injur
y from touching
components under voltage
The ignition system and the fuel injection sys-
t
em operate at high voltage. You could receive
an electric shock. 
Never touch ignition system or fuel injec-
tion sy

stem components when the vehi-
cle is switched on. The live components include the following, for
e

xample:
= Ignition coils
= Fuel injectors
= Electric lines to the ignition coils and the fuel
injectors &
WARNING Risk of bur
ns from hot compo-
nent parts in the engine compartment
Certain component parts in the engine com-
par
tment can be very hot, e.g. the engine, the
cooler and parts of the exhaust system. 
Allow the engine to cool down and only
t
ouch component parts described in the
following. &
WARNING Risk of injur
y from using the
windscreen wipers when the bonnet is
open
If the windscreen wipers start moving when
t
he bonnet is open, you could be trapped by
the wiper linkage. 
Always switch oM t
he windscreen wipers
and the vehicle Nrst if you need to open
the bonnet. Maintenance and care
347