phone MERCEDES-BENZ B-CLASS HATCHBACK 2021 Service Manual

Di.er
Di.er
ences
ences be
betw
tween t
een t he Mer
he Mer cedes-Benz emerg
cedes-Benz emerg ency call syst
ency call system and 112 emerg
em and 112 emerg ency call syst
ency call system (EU eCall)
em (EU eCall) Mer
Mer
cedes-Benz emerg
cedes-Benz emerg ency call syst
ency call system
em 112 emerg
112 emergency call syst
ency call syst em (EU eCall)
em (EU eCall)
R The Mercedes-Benz emer gency call system is permanently logged in to
th e mobile phone networ k.
R Automatic and manual Mercedes-Benz emer gency calls are transmitted
to a Mercedes-Benz emer gency call centre.
In theev ent that the emer gency call centre of the Mercedes-Benz emer-
ge ncy call system cannot be reached (e.g. due toa lack of network co v-
erage), the 112 emer gency call is ca rried out automaticall y.R
Ifyo u decide touse the 112 emer gency call system (EU eCall), then the
system only logs in tothe mobile phone network aTer the triggering of a
manual or automatic emer gency call.
R The 112 eme rgency call system (EU eCall) transmits automatic and
manual emer gency calls directly topublic coordination centres. %
The 112 emer gency call system (EU eCall) in
yo ur vehicle meets the delegated regulation
EU 2017/79. Proper and full functionality of
th e 112 emer gency call system (EU eCall)
depends on circumstances be yond the in0u-
ence of Mercedes-Benz AG. This includes
mobile network co verage and thete ch nical
infrastructu reofthe public reception cent res
in there specti vecount ries.
% Please obser vethat in theev ent of a repair
ge nuine Mercedes-Benz bat teries must be
used which ha vebeen certi/ed pursuant to
th e delegated regulation EU 2017/79 (Appen- dix I). Other manu
facturers are also permitted
pr ov ided their batteries are certi/ed accord-
ing tothe delegated regulation EU 2017/79.
There is the option of deactivating the Mercedes-
Benz emer gency call system and using only the
112 emer gency call system (EU eCall). Contact
add ress for car rying out deactivation of the
Mercedes-Benz eme rgency call system are the
local dealers. Mercedes-Benz
recommends the activation of the
Mercedes-Benz eme rgency call system forth efo l-
lowing reasons:
R In emer gency situations when abroad, you can
also get support in a langua geyou speak.
R Several transmission tech nologies are used to
accelerate the transfer of the accident data
and impr overeliability of the transmission.
R The Mercedes-Benz emer gency call system is
permanently logged in tothe mobile phone
networ k,which ensu resfa ster placement of 324 324
MBUX multimedia system

th
e emer gency call and faster transfer of the
accident data.
Measu resfo rre scue, reco very or towing away
can then be initiated in quickl y.
R With a Mercedes-Benz emer gency call, the
accident data is only transfer redto the public
coordination centre with the appr oval of the
cus tomer.
In theev ent of an automatically triggered
emer gency call in which there is no voice con-
ta ct, the accident data is transmitted immedi-
ately tothe public emer gency call centre.
R Should the Mercedes-Benz emer gency call
centre not be available, the 112 emer gency
call is ca rried out automaticall y.Ov Ov
er
ervie
vie w of emerg
w of emerg ency call syst
ency call syst ems
ems Bo
th th e Mercedes-Benz emer gency call system
as well as the 112 emer gency call system (EU
eCall) can help toreduce the time between an
accident and the ar riva l of emer gency services at
th e site of the accident. They help locate an acci-
dent site in places that are di1cult toaccess. Bo
th emer gency call systems can initia tean emer-
ge ncy call automatically (/ page 325) or man-
ual ly ( / page 326).
Only make emer gency calls if you or others are in
need of rescue. Do not make an emer gency call in
th eev ent of a breakdown or a similar situation.
Messag
Messag es on t
es on the display
he display
The following message s appear inthe display of
bo th emer gency call systems:
R SOS NOT READY: theve hicle is not switched
on or the emer gency call system is malfunc-
tioning. This does not necessarily indicate
comple tefailure of the emer gency call system.
Eme rgency calls call still be transmitted.
The display only refers to theve hicle and does
not take account of theav ailability of mobile
phone networ ksand the Mercedes-Benz emer-
ge ncy call centre.
The functional readiness of the emer gency call
system on theve hicle can be seen when the
SOS NOT READY displaydisappears once the
ve hicle is switched on. R
0053: The icon appears in the display during
an active emer gency call.
% Ifth ere is a malfunction in the emer gency call
system (e.g. a fault with the speaker, micro-
phone, airbag, SOS button), a cor responding
message appears on the inst rument displa y. T T
r
r igg
igg er
ering an aut
ing an aut omatic emerg
omatic emerg ency call
ency call R
R
eq
eq uir
uir ements:
ements:
R The vehicle is switched on.
R The star ter battery is su1ciently charge d.
Bo th th e Mercedes-Benz emer gency call system
as well as the 112 emer gency call system (EU
eCall) automatically initia tean emer gency call
aTer:
R Activation of there straint systems su chas air-
bags or seat belt tensioners aTer an accident
The eme rgency call has been made:
R Avo ice connection is established with the
emer gency call centre. MBUX multimedia system
325
325

R
A messa gewith accident data is transmit ted
to the emer gency call centre.
The SOS button in theove rhead control panel
0ashes until the emer gency call is /nished.
If no connection can be made tothe public emer-
ge ncy services, a cor responding message
appears in the displa y. #
Dial the emer gency number 112 or an app ro-
priate local emer gency call number on your
mobile phone.
If an emer gency call has been initia ted:
R Remain in theve hicle if thero ad and tra1c
conditions permit youto do so until a voice
connection is established with the emer gency
call centre.
R Onthe basis of the call, the emer gency call
centre decides wh ether it is necessary tocall
re scue teams and/or the police tothe acci-
dent site. R
If no vehicle occupant answers, an ambulance
is sent totheve hicle immediatel y. T
T
r
rigg
igg er
ering a manual emerg
ing a manual emerg ency call
ency call #
T To use t o use t he SOS butt
he SOS butt on in t
on in theov
he overerhead con-
head con-
tr
tr ol panel:
ol panel: pressthe SOS button at least one
second long (/ page 314). #
T
T o use v
o use v oice contr
oice contr ol:
ol:use the LINGU ATRO NIC
vo ice commands .
The emer gency call has been made:
R Avo ice connection is established with an
emer gency call centre.
R Remain in theve hicle if thero ad and tra1c
conditions permit youto do so until a voice
connection is established with the emer gency
call centre.
R Onthe basis of the call, the emer gency call
centre decides wh ether it is necessary tocall re
scue teams and the police tothe accident
site.
R A message with accident data is transmitted
tothe emer gency call centre.
If no connection can be made tothe public emer-
ge ncy services, a cor responding message
appears in the media displa y. #
Dial the 112 emer gency number or the appro-
priate local emer gency call number on your
mobile phone. Emerg Emerg
ency call syst
ency call syst em dat
em data tr
a transmission
ansmission Fo
r bo th th e Mercedes-Benz emer gency call sys-
te m as well as the 112 emer gency call system (EU
eCall) data is trans ferred tothe Mercedes-Benz
emer gency call centre or the public emer gency
services call centre.
Depending on the emer gency call system
(/ page 323) activated di.erent data is transmit-
te dto the appropriate emer gency call centre. 326 326
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

Depending on
the countr y,data volume may
need tobe pur chased.
R Afast In tern et connection for data transmis-
sion free of inter fere nce.
% Data volume can be pur chased dir directl
ectl y fr
y from
om
a mobile phone ne
a mobile phone ne tw
twor
ork pro
k pro vider
vider viathe
Mercedes me Portal.
% The functions and services are countr y-
dependent. For more information, consult a
Mercedes-Benz service centre.
Multimedia system: 4 © 5
Radio #
Select TuneIn Radio .
The TuneIn menu appears. The last station set
starts playing.
% The connection quality depends on the local
mobile phone reception. Sound se
Sound se
ttings
ttings Ov
Ov
er
ervie
vie w of functions in t
w of functions in t he sound menu
he sound menu The setting options and functions
available
depend on the sound system /t ted. You can /nd out which sound system is /t
tedinyour vehicle in
th e Digital Owner's Manual.
S
S t
tandar
andar d sound syst
d sound syst em and A
em and Adv
dvanced sound sy
anced sound sy s-
s-
t
t em
em
The following functions are available:
R Equaliser
- Treble, mid-range and bass
R Balance and fader
R Volume
- Automatic adjustment
Bur
Bur mest
mest er
er®
®
surr
surr ound sound syst
ound sound syst em and
em and
Bur
Bur mest
mest er
er ®
®
high-end 3D surr
high-end 3D surr ound sound syst
ound sound system
em
The following functions are available:
R Equalise r:
- Treble, mid-range and bass
R Balance and fader
R Sound focus
R VIP seat (Burmes ter®
high-end 3D sur round
sound system only)
R Sound pro/les R
Volume:
- Automatic adjustment MBUX multimedia system
335
335

+
ENVIR
ENVIR
ONMENT
ONMENT AL NO
AL NOTE
TE Environmen tal
pollution caused byenvironmentally ir re-
sponsible disposal Ty
re sealant contains pollu tants. #
Have the tyre sealant bottle disposed of
professionall y,e.g. at a Mercedes-Benz
Service Centre. #
Stow the tyre sealant bottle, the tyre in0ation
compressor and thewa rning triangle. #
Pull awa
Pull away immediat
y immediat ely.
el y. #
Stop driving aTer appr oximately ten minutes
and check the tyre pressure using the tyre
in0ation compressor.
The tyre pressure must now be at least
130 kPa (1.3 bar/19 psi). &
W WARNING
ARNING Risk of accident due tothe
speci/ed tyre pressure not being attained
If th e speci/ed tyre pressure is not reached,
th e tyre is too badly damaged. The tyre seal-
ant cannot repair the tyre in this instance. The braking and driving
characteristics may be
gr eatly impaired. #
Do not continue driving. #
Consult a quali/ed specialist workshop. Countr
Countr
ies t
ies that hav
hat hav e Mer
e Mercedes-Benz Ser
cedes-Benz Ser vice24h:
vice24h:
yo u will /nd a stic ker with thete lephone number,
e.g. on the B‑pillar on the driver's side. #
Correct the tyre pressure if it is still at least
130 kPa (1.3 bar/19 psi). See the tyre pres-
sure table on the fuel /ller 0ap forva lues.
Incr
Incr easing t
easing t he tyr
he tyre pr
e pressure
essure #
Switch on the tyre in0ation compressor.
Decr
Decr easing t
easing t he tyr
he tyre pr
e pressure
essure #
Remo vethe tyre sealant bottle from the tyre
in0ation compressor. #
Insert the /ller hose in the soc ket of the tyre
in0ation compressor and turn it a quarter turn
clockwise. #
Press pressure release button Cnext to
manome terB.
When t When t he tyr he tyre pr
e pressur
essur e is corr
e is corr ect
ect #
Unscr ewthe /lling hose from theva lve of the
sealed tyre. #
Screw theva lve cap onto theva lve of the
sealed tyre. #
Stow the tyre sealant bottle and the tyre in0a-
tion compressor. #
Drive tothe nearest quali/ed specialist work-
shop and ha vethe tyre, tyre sealant bottle and
/lling hose replaced there. 360
360
Breakdown assistance

The
following can be used in theve hicle without
re strictions:
R two- wayra dios with a maximum transmission
output of up to100 mW
R RF transmitters with transmitter frequencies in
th e 380 - 410 MHz frequency band and a
maximum transmission output of up to2 W
(TETRA)
R mobile phones (2G/3G/4G)
There are no restrictions when positioning the
aerial on the outside of theve hicle forth efo llo w-
ing frequency bands:
R Terrestrial Trunked Radio (TETRA)
R 70 cm frequency band
R 2G/3G/4G R
R
egulat
egulat or
ory r
y r adio
adio identi/cation
identi/cation and not
and notes
es R
R
egulat
egulat or
ory r
y r adio
adio identi/cation
identi/cation of small com
of small compo-
po-
nents
nents Manufacturer information about
radio-based vehi-
cle components can be found using thekey
phrase "Regulatory radio identi/cation" in the Dig- ital Owner's Manual in
theve hicle, on the internet
and in the app. R
R
egulat
egulat or
ory r
y r adio
adio identi/cation
identi/cation – Indonesia
– Indonesia Manufacturer information about
radio-based vehi-
cle components can be found using thekey
phrase "Regulatory radio identi/cation – Indone-
sia" in the Digital Operator's Manual in theve hi-
cle, on the internet and in the app.
% These are not small components. Information
about small components can be found using
th eke y phrase "Regulatory radio identi/cation
of small components". F F
urt
urt her
her com
com ponent-speci/c
ponent-speci/c inf
infor
ormation
mation Fu
rther component-speci/c information can be
fo und using theke y phrase "fur ther component-
speci/c information" in the Digital Owner's Man-
ual in theve hicle, on the internet and in the app. V
V
ehicle
ehicle identi/cation
identi/cation plat
plate, VIN and engine num-
e, VIN and engine num-
ber ov
ber overerview
view
V
V ehicle
ehicle identi/cation
identi/cation plate
plate 394
394
Te
ch nical data

Side airbag.............................................. 52
Wi ndow airbag......................................... 52
Air0 ow
Air0ow
Setting................................................... 157
Alar
Alar m syst
m syst em
em
see ATA (anti-theT alarm system)
All-wheel dr
All-wheel dr ive
ive
see 4M ATIC
Ambient lighting
Ambient lighting Setting (MBUX multimedia system)........ .146
Andr
Andr oid A
oid A uto
uto
see Smartphone integ ration
Animals
Animals Pets in theve hicle.................................... 80
Anti-loc
Anti-loc k br
k braking syst
aking syst em
em
see ABS (Anti-lock Braking System)
Anti-skid c
Anti-skid c hains
hains
see Sn owchains
Anti-t
Anti-theT heTprot
pr otection
ection
Ad ditional door loc k................................. 84
Immobiliser............................................ 102
Anti-t
Anti-theT heTprot
pr otection
ection
see ATA (anti-theT alarm system) Anticipat
Anticipat
or
ory occupant pr ot
y occupant pr otection
ection
see PRE-SAFE ®
(anticipatory occu-
pant pr otection)
see PRE-SAFE ®
PLUS (anticipatory
occupant pr otection plus)
Apple CarPlay
Apple CarPlay ®
®
see Smartphone integ ration
Assist
Assist ance syst
ance syst ems
ems
see Driving saf ety sy stem
ASS YS
ASS YST PL
T PL US
US
Battery disconnection period s................ 337
Displaying the service due dat e.............. 336
Fu nction/no tes...................................... 336
Re gular maintenance work..................... 336
Special service requ irements................. 336
AT
ATA A(anti-t
(anti-theT heTalar
alarm syst
m syst em)
em)
Deactivating the alarm........................... 103
Fu nction................................................ 102
Interior pr otection function.....................1 04
Priming/deactivating interior pr otec-
tion........................................................ 104
Priming/deactivating tow- awa y pro-
te ction................................................... 104
To w- awa y protection function................. 103 A
A TTENTION ASSIST
TTENTION ASSIST
Function................................................ 230
Setting.................................................. .232
System limitations.................................. 230
A
A tt
tt ention assist
ention assist ant
ant
see ATTENTION ASSIST
A A ut ut hor
hor ised w
ised w ork
orkshop
shop
see Quali/ed specialist workshop
A
A ut
ut omatic car w
omatic car w ash mode
ash mode
Ac tivating............................................... 345
A
A ut
ut omatic co-dr
omatic co-dr iv
iver airbag
er airbag shut
shuto.
o.
Fu nction of co-driver airbag shuto........... 55
A
A ut
ut omatic dist
omatic dist ance contr
ance control
ol
see Active Distance Assist DISTRONIC
A
A ut
ut omatic dr
omatic dr iving lights
iving lights ................................ 139
A
A ut
ut omatic engine st
omatic engine st art
art
see ECO start/stop function
A
A ut
ut omatic engine st
omatic engine st op
op
see ECO start/stop function
A
A ut
ut omatic fr
omatic fr ont passeng
ont passeng er airbag
er airbagshut
shut o.
o.
PA SSENGER AIR BAG indicator la mps...... 57
A
A ut
ut omatic measur
omatic measur es
esaTer
aTer an accident
an accident........... .60 Index
497
497

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