ECU MERCEDES-BENZ B-CLASS HATCHBACK 2021 Manual PDF

Ha
ve the camera checked in a Mercedes-Benz
service centre. T
T
elephone
elephone T
T
elephony
elephony N
No
ot
tes on t
es on t elephony
elephony &
W
WARNING
ARNING Risk of dist raction from operat-
ing integ rated communication equipment
while theve hicle is in motion
If yo u operate communication equipment inte-
gr ated in theve hicle when driving, you could
be distracted from the tra1c situation. This
could also cause youto lose control of the
ve hicle. #
Only operate this equipment when the
tra1c situation pe rmits. #
Ifyo u cannot be sure of this, stop the
ve hicle whilst paying attention toroad
and tra1c conditions and operate the
equipment with theve hicle stationar y. &
W
WARNI NG
ARNI NGRisk of an accident from oper-
ating mobile communication equipment
while theve hicle is in motion
Mobile communications devices distract the
driver from the tra1c situation. This could also
cause the driver tolose control of theve hicle. #
Asthe driver, only operate mobile com-
munications devices when theve hicle is
stationar y. #
As a vehicle occupant, only use mobile
communications devices in the areas
intended forth is purpose, e.g. in there ar
passen ger compartment. Yo
u must obser vethe legal requ irements forthe
count ryin which you are cur rently driving when
ope rating mobile communication equipment in
th eve hicle. &
W WARNING
ARNING Risk of injury due toobjects
being st owed incor rectly
If objects in theve hicle interior are st owed
incor rectl y,they can slide or be thro wn around and hit
vehicle occupants. In addition, cup
holders, open st owage spaces and mobile
phone recep tacles cann otalw aysreta in all
objects within.
There is a risk of injur y,particular lyin the
eve nt of sudden braking or a sudden change
in direction. #
Always st owobjects so that they cann ot
be thro wn around in such situations. #
Always make sure that objects do not
pr otru de from st owage spaces, lug gage
nets or st owage nets. #
Close the loc kable st owage spaces
before starting a jou rney. #
Always st owand secure heavy, hard,
poin ted, sharp-edged, fragile or bulky
objects in the boot/load compartment. Obser
vethe additional information on st owing
mobile communications devices cor rectl y:
R Loading theve hicle (/ page 118)
R Stow ing and securing the mobile phone
(/ page 135) MBUX multimedia system
311 311

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

If a call is made aTer automatic accident or break-
down de
tection using the multimedia system, the
fo llowing data is also transmitted:
R Current mileage and maintenance data
R Current vehicle location
If Ac cident and Breakdown Management is called
via thevo ice control system and no service has
been activated, but the data pr otection query has
been con/ rmed, thefo llowing data can also be
called up from theve hicle bythe Mercedes-Benz
Customer Centre:
R Current vehicle location
If th e data pr otection prom pthas been rejec ted,
th efo llowing data is transmitted toenable targe-
te d advice and an e1cient service:
R Reason forth e initiation of the call
R Rejection of the data pr otection prompt
R Country indicator of theve hicle
R Set language forth e multimedia system
R Telephone number of the communication plat-
fo rm installed in theve hicle Dat
Dat a tr a transf
ansf er if Mer
er if Mer cedes me connect ser
cedes me connect ser vices
vices
ar
ar e activ
e activ at
ated
ed
Only if there specti veservice is activated will
additional incident-speci/c data be transmit ted in
th e second stage toenable an optimal service.
An ove rview of the data transmitted can be found
in there specti veterm s of use for Mercedes me
connect services. These can be obtained in the
Mercedes me por tal: https://
me.secure.mercedes-benz.com
Dat Dat a pr
a pr ocessing
ocessing
The data transmitted within the scope of the call
is dele ted from the processing system aTer the
call is /nished, in so far as this data is not being
used forot her activated Mercedes me connect
services.
The incident-speci/c data is processed and stored
in the Mercedes-Benz Customer Centre and, if
re qu ired toprocess the incident, forw arded tothe
service partner authorised bythe Mercedes-Benz
Customer Centre. Please take note of the data
pr otection information on the Mercedes me Inter-
net page https://www.mercedes.me or in there
corded message immediately aTer calling the
Mercedes-Benz Customer Centre.
% The recorded message is not available in
ev ery countr y. Mer Mer
cedes me connect
cedes me connect Inf
Inf
or
ormation on Mer
mation on Mer cedes me connect
cedes me connect
% Mercedes me connect or individual Mercedes
me connect services are not available in every
countr y.Find out at a Mercedes-Benz service
centre if these functions are available in your
countr y.
Mercedes me connect consists of multiple ser v-
ices.
Yo u can use thefo llowing services via the multi-
media system and theove rhead control panel, for
ex ample:
R Accident and Breakdown Management (me
button or situation-dependent display in the
multimedia system)
R Mercedes-Benz emer gency call system (auto-
matic eme rgency call and SOS button) 318 318
MBUX multimedia system

The Mercedes me connect
Accident and Break-
down Management and the Mercedes-Benz emer-
ge ncy call centre are available toyou around the
cloc k.
The me button and the SOS button can be found
on theve hicle's overhead control panel
(/ page 314).
Yo u can also call the Mercedes-Benz Customer
Centre using the multimedia system
(/ page 315).
Please no tethat Mercedes me connect is a
Mercedes-Benz service. In emer gencies, /rst call
th e national emer gency services using the stand-
ard national emer gency service telephone num-
bers. In emer gencies, you can also use the
Mercedes-Benz eme rgency call system
(/ page 325).
Obser vethe conditions of use for Mercedes me
connect and other services. These can be
obtained in the Mercedes me Portal: https://
me.secure.me rcedes-benz.com
Fu rther information about Mercedes me connect,
th e pr ovided service scope and operation:
https://moba.i.daimler.com/mar kets/ece-r ow/ baix/cars/connectme/en_GB/#emotions/
St
artsei te.html
Inf
Inf or ormation on Mer
mation on Mer cedes me connect A
cedes me connect A ccident
ccident
and Br
and Br eakdo
eakdown Manag
wn Manag ement
ement
The Accident and Breakdown Management can
include thefo llowing functions:
R Supplement tothe Mercedes-Benz emer gency
call system (/ page 325)
If necessar y,the contact person at the
Mercedes-Benz eme rgency call centre for-
wa rdsth e call toMercedes me connect Acci-
dent and Breakdown Management. Forw ard-
ing the call is ho wever not possible in all coun-
tries.
R Breakdown assista ncebyate ch nician on
location and/or theto wing away of theve hicle
to the nearest Mercedes-Benz service centre
Yo u may be charge dfo rth ese services.
R Addition tothe emer gency guide aTer auto-
matic accident or breakdown de tection
(/ page 316)
In theev ent of a breakdown or accident, fur-
th er vehicle data is sent which enables optimal support
bythe Mercedes-Benz Customer
Centre and the authorised service partner or
breakdown assistance.
R Addition tothe Mercedes me connect service
Te lediagnostics
Wi th th eTe lediagnostics function, speci/c
we ar and failure reports are recorded bythe
service pr ovider, in so far as these can be
clear lyinterpr eted and are available thro ugh
th e monitoring of components that are subject
to diagnostics.
If yo ur vehicle de tects a breakdown or thre at
of a breakdown, you may be prom pted via the
multimedia system tocontact the Mercedes-
Benz Customer Centre for fur ther help. This
prom ptinthe multimedia system only appears
when theve hicle is stationar y.
% These services are subject to technical
re strictions su chasthe mobile phone co ver-
age, mobile network quality and the ability of
th e processing systems tointerpr etthe trans-
fe rred data. In some circumstances, this can
re sult in dela ysorthefa ilure of the informa-
tion toappear in the multimedia system. MBUX multimedia system
319
319

More information about Mercedes me connect
services can be obtained in the Mercedes me Por-
ta l: https://me.secure.mercedes-benz.com
Dat
Dat a tr
a transf
ansf err
erred dur
ed dur ing Mer
ing Mer cedes me connect
cedes me connect
call ser
call ser vices
vices
The data transfer red during a Mercedes me con-
nect call depends on:
R The reason for initiation of the call
R The service that is selected in thevo ice con-
trol system
R The activated Mercedes me connect services
Yo u can /nd out which data is transfer red when
using the services in the cur rently valid Mercedes
me connect term s of use and the data pr otection
information for Mercedes me connect. You can
/nd these in your Mercedes me user account. Ov
Ov
er
ervie
vie w of t
w of t he Mer
he Mer cedes me & Apps menu
cedes me & Apps menu When
you log in with a user account tothe
Mercedes me Portal, then services and o.ers
from Mercedes-Benz will be available toyou. Fo
r more information consult a Mercedes-Benz
service centre or visit the Mercedes me por tal:
https://me.secure.mercedes-benz.com
% Make sure you alw ayske ep the Mercedes me
apps updated.
Yo u can call up the menu using Mercedes me &
Apps inthe multimedia system.
In theMercedes me & Apps menu,thefo llowing
options can be available:
R Connecting theve hicle with theMercedes me
user account
R Deleting a connection between a Mercedes
me user account and theve hicle
R Calling up the Mercedes me services
R Calling up apps such as, In-Car O1ce or the
we b br owser depending on availability Ov
Ov
er
ervie
vie w of In-Car
w of In-Car O1ce
O1ce Using In-Car O1ce,
you can connect your online
services with the multimedia system. Re
quirements for In-Car O1ce:
R Your mobile phone is connected with the mul-
timedia system (/ page 314).
R You ha vea user account forth e Mercedes me
Po rtal.
R The In-Car O1ce service is activated in the
Mercedes me Portal.
R You ha vea user account with an online
service, e.g. with O1ce 365 or Gmail, and
ha ve connected the user account with In-Car
O1ce.
In-Car O1ce functions R Display pending appointments in the calendar
- Reading out calendar ent ries
- Calling stored telephone numbers
- Navigating toappointments with navigable
destinations
- Deleting a calendar ent ry
R Display and selection of tasks and calls to
comple te
- Reading aloud 320
320
MBUX multimedia system

Se
Se
tting up t
tting up t he w
he war
arning tr
ning tr iangle
iangle #
Fold side re0ectors 1upwards toform a tri-
angle and attach at theto p using upper press-
stud 2. #
Fold legs 3down and out tothe side. F
F
irs
irst-aid kit t-aid kit (soT-sided)
(soT-sided) ov
over
erview
view Fi
rs t-aid kit (soT sided) 1is in the load compart-
ment in the leT-hand st owage net. R
R
emo
emo ving t
ving t he
he/re
/re e
extinguisher
xtinguisher &
W WARNING ARNING Risk of accident due toan
inco rrectly secured /re extinguisher in the
driver's foot we ll
A /re extinguisher may impede pedal tr avel or
block a depressed pedal. This jeopardises
the operating and road saf ety
of theve hicle.
The /re extinguisher can be 0ung around and
injure the driver or other vehicle occupants. #
Always store and secure the /re extin-
guisher in the brac ket. #
Do not remo vethe /re extinguisher while
driving. #
LeT-hand
LeT-hand dr
driv
ive v
e v ehicle:
ehicle: pulltab1 upwards. #
Right-hand dr
Right-hand dr iv
ive v
e v ehicle:
ehicle: pulltab1 down-
wa rds. #
Remo ve/re extinguisher 2. Breakdown assistance
353
353

At
a dis tance of app roximately 1 m tothe tyre
in0ation compressor and appr oximately 1.6 m
abo vethegr ound, thefo llowing sound pres-
sure le vels appl y:
R Emission sound pressure le vel L
PA 83 dB
(A)
R Sound po wer le vel L
WA 91 dB (A)
The tyre in0ation compressor is maintenance-
free. If there is a malfunction, please contact
a qu ali/ed specialist workshop. TIREFIT kit st TIREFIT kit st
or
orag
ag e location
e location The TIREFIT kit is located under
the load compart-
ment 0oor on theright-hand side.
% You can /nd information on the po wer cate-
gory (LK) and/or electrical data on the back
of the tyre in0ation compressor:
R LK2 – 12 V/15 A,180 W,0.8 kg At
a dis tance of app roximately 1 m tothe tyre
in0ation compressor and appr oximately 1.6 m
abo vethegr ound, thefo llowing sound pres-
sure le vels appl y:
R Emission sound pressure le vel L
PA
83 dB(A)
R Sound po wer le vel L
WA 91 dB(A)
The tyre in0ation compressor is maintenance-
free. If there is a malfunction, please contact
a qu ali/ed specialist workshop. Using t
Using t
he TIREFIT kit
he TIREFIT kit R
R
eq
eq uir
uir ed t
ed t ools:
ools:
R Tyre sealant bottle
R TIREFIT stic ker
R Sticke r with de tails of the maximum permissi-
ble speed
R Tyre in0ation compressor
R Gloves
TIREFIT kit storage location: (/ page 356, 355)Yo
u can use TIREFIT tyre sealant toseal per fora-
tion damage of up to4 mm, particular lythose in
th e tyre contact sur face. You can use TIREFIT in
outside temp eratures down to-20°C. &
W
WARNING
ARNING Risk of accident when using
tyre sealant
The tyre sealant may be unable toseal the
tyre proper ly, especially in thefo llowing cases:
R there are lar gecuts or punctures in the
tyre (la rger than damage pr eviously men-
tioned)
R the wheel rims ha vebeen damaged
R aTer journe yswith very low tyre pressure
or with 0at tyres #
Do not continue driving. #
Consult a quali/ed specialist workshop. &
W WARNING
ARNING Risk of injury and poisoning
from tyre sealant
Ty re sealant is hazardous tohealth and causes
ir rita tion. Do not allow it tocome into contact 356 356
Breakdown assistance

&
W
W ARNI NG
ARNI NGRisk of explosion from a frozen
battery
A dischar ged battery may freeze at temp era-
tures slightly abo veor below freezing point.
During starting assistance or battery charging,
battery gas can be released. #
Always allow a battery tothaw before
ch arging it or per form ing starting assis-
ta nce. If
th e indicator/warning lamps in the inst rument
cluster do not light up at low temp eratures, it is
ve ry likely that the dischar ged battery has frozen.
In this case you may neither jump-start theve hi-
cle nor charge the batter y.
The service life of a bat tery that has been thawed
may be dramatically shor tened. The starting char-
acteristics may be impaired, especially at low
te mp eratures.
It is recommended that you ha veath awe d battery
ch ecked at a quali/ed specialist workshop. *
N
NO OTE
TE Damage caused bynume rous or
ex tended attem ptsto start the engine Numerous or
extended attem ptsto start the
engine may damage the catalytic con verter
due tonon-combusted fuel. #
Avoid numerous and extended attem pts
to start the engine. Obser
vethefo llowing points during starting assis-
ta nce and when charging the batter y:
R Only use undamaged jump lead/charging
cables with a su1cient cross-section and
insulated term inal clamps.
R Non-insulated parts of thete rm inal clamps
must not come into contact with other me tal
parts while the jump lead/charging cable is
connected tothe battery/jump-start connec-
tion point.
R The jump lead/charging cable must not come
into contact with any parts which may mo ve
when the engine is running.
R Always make sure that nei ther you nor the bat-
te ry is electros tatically charge d. R
Keep awa y from /re and naked 0ames.
R Do not lean overth e batter y.
Obser vethe additional following points when
ch arging the batter y:
R Only use battery charge rs tested and
appro vedfo r Mercedes-Benz.
R Read the battery charge r's operating inst ruc-
tions before charging the batter y.
Obser vethe additional following points during
starting assistance:
R For starting assistance, only use batteries with
a nominal voltage of 12 V.
R The vehicles must not touch.
R P
P e etr
tr ol engine:
ol engine: only accept starting assistance
if th e engine and exhaust system are cold. S
S
t
tar
ar ting assist
ting assist ance and c
ance and c har
harging t
ging t he 12 V batt
he 12 V batt ery
ery R
R
eq
eq uir
uir ements:
ements:
R The vehicle is secured with the electric par k-
ing brake. Breakdown assistance
363
363

%
V
V ehicles wit
ehicles wit h aut
h automatic tr
omatic tr ansmission:
ansmission: the
automatic transmission may be loc ked in posi-
tion 005Dintheev ent of damage tothe electri-
cal system. ToshiT to005C , pr ovide the on-
board electrical system with po wer
( / page 363). #
V
Vehicles wit
ehicles wit h manual tr
h manual tr ansmission:
ansmission: shiTto
neutral. #
Load theve hicle onto the transpor ter. #
V
Vehicles wit
ehicles wit h aut
h automatic tr
omatic tr ansmission:
ansmission: shiTthe
automatic transmission toposition 005D. #
V
Vehicles wit
ehicles wit h manual tr
h manual tr ansmission:
ansmission: engage
/rst or reve rsege ar. #
Use the electric parking brake tosecure the
ve hicle against rolling away. #
Only secure theve hicle bythe wheels. V V
ehicles wit ehicles wit h adap
h adaptiv
tive dam
e dam ping adjus
ping adjustment tment &
W
WARNING
ARNING Risk of an accident when trans-
porting vehicles with adaptive damping
adjustment
When transpo rting vehicles with adaptive
damping adjustment, theve hicle/trailer com-
bination may begin torock and start toskid. #
Load theve hicle cor rectly onto the
transpor ter. #
Secure theve hicle on all four wheels
with suitable tensioning straps. #
Do not exceed the maximum permissible
speed of 60 km/h when transporting. *
N
NOOTE
TE Damage totheve hicle from secur-
ing it inco rrectly #
ATer loading, theve hicle must be
secured on all four wheels. Otherwise,
th eve hicle could be damaged. #
A minimum dis tance of 20 cm upwards
and 10 cm down wards must be kept to
th e transport platform. #
Secure theve hicle on all four wheels aTer
loading.
4MA
4MA TIC v
TIC v ehicles/v
ehicles/v ehicles wit
ehicles wit h aut
h automatic tr
omatic tr ans-
ans-
mission
mission #
Make sure that the front and rear axles come
to rest on the same transpor tation vehicle.
* N
NOOTE
TE Damage tothe drive train due to
incor rect positioning of theve hicle #
Do not position theve hicle abo vethe
connection point of the transport vehi-
cle. Breakdown assis
tance
369
369

#
Tow- start theve hicle while the clutch pedal is
fully depressed. #
Slowly re leasethe clutch pedal. #
Immediately shiT toneutral if the engine
starts. #
Stop theve hicle in accordance with the tra1c
conditions. #
Remo vetheto w bar. #
Remo vetheto wing eye. #
Have theve hicle checked at a quali/ed spe-
cialist workshop. Electr
Electr
ical fuses
ical fuses N
No
ot
tes on electr
es on electr ical fuses
ical fuses &
W
WARNING
ARNING Risk of accident and injury due
to ove rloaded lines
If yo u manipulate or bridge a faulty fuse or if
yo ure place it with a fuse with a higher amper-
age, the electric line could be overloaded.
This could result in a /re. #
Alwaysre place faulty fuses with speci-
/ed new fuses containing the cor rect
amperage. *
N
NOOTE
TE Damage due toincor rect fuses Electrical components or systems may be
damaged
byincor rect fuses, or their function-
ality may be signi/cantly impaired. #
Only use fuses that ha vebeen appr oved
by Mercedes-Benz and which ha vethe
cor rect fuse rating. Blown fuses must be
replaced with fuses of the
same rating, whi chyou can recognise bythe col-
our and the label. The fuse ratings and fur ther
information tobe obser ved can be found in the
fuse assignment dia gram.
F F use assignment diagr
use assignment diagr am:
am:onthe fuse box in the
engine compartment (/ page 372). *
N
NOOTE
TE Damage or malfunctions caused by
moisture Moisture may cause damage
tothe electrical
system or cause it tomalfunction. #
When the fuse box is open, make sure
th at no moisture can enter the fuse box. #
When closing the fuse box, make sure
th at the seal of the lid is positioned cor-
re ctly on the fuse box. If
th e ne wlyinser ted fuse also blo ws, ha vethe
cause traced and recti/ed at a quali/ed specialist
wo rkshop.
Ensure thefo llowing before replacing a fuse:
R The vehicle is secured against rolling away.
R All electrical consume rsare switched o..
R The vehicle is switched o..
The elect rical fuses are located in various fuse
bo xes:
R Fuse box in the engine compartment on the
leT-hand side of theve hicle, when vie wed in
th e direction of tr avel (/ page 372) Breakdown assistance
371
371