ignition MERCEDES-BENZ B-CLASS HATCHBACK 2021 Owners Manual

Easy entr
Easy entr
y and e
y and exit f
xit feature
eature Using t
Using t
he easy entr
he easy entr y and e
y and exit f
xit feature
eature &
W
WARNING
ARNING Risk of accident when pulling
awa y during the adjustment process of
th e easy entry and exitfeature
Yo u could lose control of theve hicle. #
Alwayswa it until the adjustment process
is comple tebefore driving o.. &
W
WARNING
ARNING Risk of becoming trapped dur-
ing adjustment of the easy entry and exit
fe ature
Yo u and other vehicle occupants could
become trapped. #
Ensu rethat no-one has any body parts in
th era nge of mo vement of the seat.
If th ere is a risk of becoming trapped bythe
driver's seat: #
Press the seat adjustment switch.
The adjustment process will be stopped. Yo
u can stop the adjustment process bypressing
one of the memory function position switches. &
W
WARNING
ARNING Risk of becoming trapped if
ch ildren activate the easy entry and exit
fe ature‑
Child ren could become trapped if they acti-
va te the easy entry‑ and exitfeature, particu-
lar lywhen unat tended. #
Never lea vechildren unattended in the
ve hicle. #
When leaving theve hicle, alw aysta ke the
ke y with you and lock theve hicle. When
the easy entry and exitfeature is active, the
driver's seat will mo vebackwards and the bac k-
re st will be mo vedto a steeper position when:
R You switch the ignition o. when the driver's
door is open
R You open the driver's door when the ignition is
switched o. %
The driver's seat will then mo vebackwards
only if it is not already at there ar of the seat
adjustment range.
The seat backrest will then mo ve forwards
only if it is not already at the front of the bac k-
re st adjustment range.
The driver's seat will mo veback tothe last drive
position when:
R You switch the ignition on with the driver's
door closed.
R You close the driver's door when the ignition is
switched on
The last drive position will be sa ved when:
R You switch the ignition o..
R You call up the seat settings via the memory
function.
R You sa vethe seat settings via the memory
function. 116
116
Seats and st
owing

Cor
Cor
ner
nering light function
ing light function The cornering light impr
ovesth e illumination of
th e car riag ewa yove r a wide angle in the turning
direction, enabling better visibility on tight bends,
fo rex ample. It can be activated only when the low
beam is switched on.
The function is active in thefo llowing cases:
R Atspeeds below 40 km/h when the turn sig-
nal light is switched on or the steering wheel
is turned
R Atspeeds between 40 km/h and 70 km/h
and when the steering wheel is turned R
R oundabout and junction function: oundabout and junction function: the cornering
light will be activated on bo thsides based on an
ev aluation of theve hicle's cur rent GPS position. It
will remain active until aTer theve hicle has leT
th ero undabout or the junction.
Mot
Mot orwa
or wa y mode function
y mode function
Mo torw ay mode increases thera nge and bright-
ness of the cone of light, enabling better visibility. The function will be active if a mo
torw ay journey
is de tected bymeans of:
R theve hicle's speed
R the multifunction camera
R the GPS The function is not active in
thefo llowing cases:
R at speeds below 80 km/h
The city lighting function
The city lighting function
City lighting impr oves the illumination of roadsides
in urban areas using a broad distribution of light.
The function is active in thefo llowing cases:
R Atlow speeds
R In illuminated parts of urban areas
Switc Switc hing t hing t he Int
he Int ellig
ellig ent Light Sy
ent Light Sy st
stem
em on/o.
on/o.
R
R eq
eq uir
uir ements:
ements:
R The ignition is switched on.
Multimedia system: 4 © 5
Settings 5
Lights
5 Intelligent Light System #
Switch the function on or o.. 142
142
Light and sight

R
The symbol 00D5(yellow) appears when the
ve hicle is at a standstill: Not all vehicle condi-
tions for an engine stop ha vebeen met.
R Neither the symbol 00D6nor00D5 appears
when theve hicle is at a standstill: An intelli-
ge nt stop inhibitor was de tected, e.g. a stop
sign.
R The symbol sappears: The ECO start/
stop function is deactivated or there is a mal-
function.
If th e engine was switched o. bythe ECO start/
stop function and you lea vetheve hicle, a warning
to ne sounds and the engine is not restar ted. In
addition, the display message Vehicle is opera-
tional Switch off ignition before exiting appears
in the inst rument displa y.Ifyo u do not switch o.
th eve hicle, it is automatically switched o. aTer
th re e minutes. Deactiv
Deactiv ating or activ
ating or activ ating t
ating the EC
he ECO st
O star
art/st
t/st op
op
function
function #
Press button 1.
A display appears in the inst rument clus ter
when switching the ECO start/s top function
o./on.
% A continuous sdisplay appears in the
inst rument cluster while the ECO start/s top
function is deactivated. EC
EC
O displa
O displa y function
y function The ECO display summarises
your driving charac-
te ristics from the start of the journey toits com-
pletion and assists you in achieving the most eco-
nomical driving style.
Yo u can in0uence consum ption bydoing thefo l-
lowing:
R driving with particular care.
R V
V ehicles wit ehicles wit h aut
h aut omatic tr
omatic tr ansmission:
ansmission: driving
in drive prog ram ;.
R V Vehicles wit ehicles wit h manual tr
h manual tr ansmission:
ansmission: driving in
drive prog ram A.
R following thege arshiT recommendations. Driving and parking
177
177

#
Before refuelling, switch o. theve hicle
and, if /tted, the stationary heater and
ke ep switched o. during /lling. &
W
WARNING
ARNING Risk of injury from fuels
Fu els are poisonous and hazardous toyour
health. #
Do not swallow fuel or let it come into
contact with skin, eyes or clo thing. #
Do not inhale fuel vapour. #
Keep children away from fuel. #
Keep doors and windo wsclosed during
th ere fuelling process.
If yo u or other people come into contact with
fuel, obser vethefo llowing: #
Immediate lyrinse fuel o. your skin with
soap and water. #
If fuel comes into contact with your eyes,
immediately rinse them thoroughly with
clean water. Seek medical at tention
immedia tely. #
Ifyo u swallow fuel, seek medical atten-
tion immediatel y.Do not induce vomit-
ing. #
Change immediately out of clo thing that
has come into contact with fuel. &
W WARNING
ARNING Risk of /re and explosion due
to electrostatic charge
Electrostatic charge can ignite fuel vapour. #
Before you open the fuel /ller cap or
ta ke hold of the pump nozzle, touch the
me tallic vehicle body. #
Toavo id creating ano ther electrostatic
ch arge , do not get into theve hicle again
during there fuelling process. &
W
WARNING
ARNING Risk of /re from fuel mixture
Ve hicles with a diesel engine:
If yo u mix diesel fuel with petrol, the 0ash
point of the fuel mixture is lo werth an that of
pure diesel fuel. While
theve hicle is running, component parts
in theex haust system may overheat without
wa rning. #
Neverre fuel using petrol. #
Never mix petrol with diesel fuel. *
N
NOOTE
TE Damage caused bythe wrong fuel Ve
hicles with a petrol engine:
Even small amounts of the wrong fuel could
re sult in damage tothe fuel system, the
engine and the emission control system. #
Only refuel using unleaded, sulphu r-free
spar k-ignition engine fuel that conforms
to European EN 228, or an equivalent
speci/cation.
Fu el of this speci/cation may contain up to
10% ethanol. Your vehicle is suitable for use
with E10 fuel.
Ne verre fuel wi thone of thefo llowing fuels:
R Diesel 192 192
Driving and parking

Obser
vethe no tes on operating 0uids
(/ page 396).
Ad Blue ®
is available here:
R AdBlue ®
can be topped up byfast se rvice at a
qu ali/ed specialist workshop, e.g. a
Mercedes-Benz Se rvice Centre.
R AdBlue ®
is available at many /lling stations
from AdBlue ®
/lling pumps.
R Alternati vely,Ad Blue ®
is available at quali/ed
specialist workshops, e.g. Mercedes-Benz
Se rvice Centres, and at many /lling stations in
Ad Blue ®
re/ll canis ters or AdBlue ®
re/ll bot-
tles.
% Ensure the connection between there /ll con-
ta iner and vehicle /ller neck does not drip.
T
T opping up A
opping up A dBlue
dBlue®
®
* NO
NOTE
TEEngine damage due toAd Blue ®
being in the fuel #
AdBlue ®
must not be used to/ll the fuel
ta nk. #
Only use AdBlue ®
to /ll theAd Blue ®
ta nk. #
Do not over/ll theAd Blue ®
tank. *
N
NOOTE
TE Contamination of theve hicle inte-
ri or due toAd Blue ®
lea kage #
ATer topping up, carefully close the
Ad Blue ®
re/ll con tainer. #
Avoid car rying AdBlue ®
re/ll con tainers
permanently in theve hicle. R
R
eq
eq uir
uir ements:
ements:
R The vehicle is unloc ked.
The following message s appear in order in the
Instrument Displ aywhen theAd Blue ®
tank
re qu ires topping up:
R Refill AdBlue See Owner’s Manual The
Ad Blue ®
leve l has fallen below there ser ve
ra nge. Top up with at least 5 l of AdBlue ®
.
R Top up AdBlue Emergency op. in XXX miles
See Owner's Manual The lowAdBlue ®
level
will lead tolimited per form ance aTer the re
maining distance displa yed has been driven.
To p up with at least 5 l of AdBlue ®
.
R XX,X l Top up AdBlue Emer. op.: max. XXX
km/h Start not poss. in XXX km The low
Ad Blue ®
leve l will lead tolimited per form ance
from the speed displa yed. ATer there maining
distance displa yed has been co vered, it will no
longer be possible tostart theve hicle. Top up
with at least the amount of AdBlue ®
displa yed.
R XX,X l Top up AdBlue Switch on ignition, wait
60 sec. or eng. start not poss. TheAdBlue ®
ta nk is em pty. Yo u can no longer start the
ve hicle. Top up with at least the amount of
Ad Blue ®
displa yed. Switch on theve hicle and
wa itfor appr oximately 60 seconds. Start the
ve hicle.
Yo u can see theAd Blue ®
range and le vel in the
Service menu in the Instrument Displa y.
% The AdBlue ®
range sh own depends strongly
on the driving style and operating conditions.
The actual range can therefore deviate from
th e calculated range. 196
196
Driving and parking

%
The camera co ver closes automatically aTer
some time or aTer an ignition cycle. P
P
ar
ar king Assis
king Assist P t PARK
ARK TR
TRONIC
ONIC F
F
unction of P
unction of P ar
arking Assis
king Assist P t PARK
ARK TR
TRONIC
ONIC
Pa rking Assist PARKTRONIC is an electronic par k-
ing assistance system with ultrasound. It monitors
th e area around your vehicle using multiple sen-
sors on the front bumper and on there ar bumper.
Pa rking Assist PARKTRONIC show syo uth e dis-
ta nce between your vehicle and a de tected obs ta-
cle visual lyand audib ly.
Pa rking Assist PARKTRONIC is only an aid. It is
not a substitute foryo ur attention tothe sur round-
ings. The responsibility for safe manoeuvring and
parking remains with you. Make sure that there
are no persons, animals or objects in the manoeu-
vring area while manoeuvring and parking in/exit-
ing parking spaces.
In the standard setting, an intermittent warning
to ne sounds from a distance of app roximately
0.3 m toan obs tacle in front and appr oximately
1.0 m toan obs tacle behind. A continuous warn-
ing tone sounds from a distance of app roximately 0.2 m. Using
theWarn early all-round setting in
th e multimedia system, thewa rning tones for
front and side impact pro tection can be set to
sound at a greater distance of appr oximately
1.0 m in front and 0.6 m on the sides
(/ page 267).
% The Warn early all-round setting is always
active in there ar of theve hicle.
P
P ar ar king Assis
king Assis t P
t PARK
ARK TR
TRONIC displa
ONIC displa y in t
y in the multi-
he multi-
media syst
media syst em
em Ve
hicles without 360° Camera Ve
hicles with 360° Camera
If yo u ha venot selected theCamera & parking
menu and an obstacle is de tected in the path of
th eve hicle, a pop-up wind ow forPa rking Assist
PA RKTRONIC 1appears in the multimedia sys-
te m at speeds below 10 km/h.
The colour of the individual segments of thewa rn-
ing display is based on the distance tothe de tec-
te d obstacle:
R Y
Y ello
ello w segments:
w segments: obstacles at a distance
between appr ox. 0.6 m and 1.0 m
R Or
Orang
ang e segments:
e segments: obstacles at a distance
between appro x. 0.3 m and 0.6 m264
264
Driving and parking

5
ß Press brie0 y:calls up favo urites
Press and hold: adds a favo urite or theme #
Alternativel y,tap© ontheto uchscreen. #
Call up the application (/ page 289).F
F
unctions of LIN
unctions of LIN GUA
GUATR
TRONIC
ONIC &
W
WARNING
ARNING Risk of distraction from infor-
mation systems and communications
equipment
If yo u operate information systems and com-
munication devices integ rated in theve hicle
when driving, you could be distracted from the
tra1c situation. This could also cause youto
lose control of theve 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. Fo
ryo ur ow n sa fety, alw ays obser vethefo llowing
points when operating mobile communications
equipment and especially your voice control sys-
te m:
R Obser vethe legal requ irements forth e coun-
try in which you are driving.
R Ifyo u use thevo ice control system in an emer-
ge ncy your voice can change and your tele-
phone call, e.g. an emer gency call, can
th ereby be unnecessarily dela yed.
R Familiarise yourself with thevo ice control sys-
te m functions before starting the journe y.
Wi th LINGU ATRO NIC, various applications in the
MBUX multimedia system are ope rable using
vo ice input. LINGU ATRO NIC is operational appr ox-
imately thirty seconds aTer the ignition is
switched on and is available forth e driver's seat
and front passenger seat.
The following multimedia system applications can
be operated:
R Telephone
R Text message and e-mail
R Navigation R
Address book
R Radio
R Media
R Vehicle functions S S
t
tar
ar ting LIN
ting LIN GUA
GUATR
TRONIC
ONIC #
Press rock er switch 1up. 292
292
MBUX multimedia system

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

Opening and closing t
Opening and closing t
he bonnet
he bonnet&
W
WARNING
ARNING Risk of accident due todriving
with the bonnet unloc ked
The bonnet may open and blo ckyour vie w. #
Neverre lease the bonnet when driving. #
Before every trip, ensure that the engine
bonnet is loc ked. &
W
WARNING
ARNING Risk of accident and inju ry
when opening and closing the bonnet
The bonnet may suddenly drop into the end
position.
There is a risk of injury for an yone in the
engine bonnet's range of mo vement. #
Do not open or close the bonnet if there
is a person in the bonnet's range of
mo vement. &
W WARNING
ARNING Risk of burns when opening the
bonnet
If yo u open the bonnet in theev ent of an over-
heated engine or /re in the engine compart-
ment, thefo llowing situations may occur:
R You may come into contact with hot gases.
R You may come into contact with other
escaping hot operating 0uids. #
Before opening the bonnet, allow the
engine tocool down. #
Intheev ent of a /re in the engine com-
partment, keep the bonnet closed and
call the /re service. &
W
WARNING
ARNING Risk of injury due tomoving
parts
Components in the engine compartment may
continue torun or start unexpectedly even
when the drive system is switched o..
Obser vethefo llowing if you must open the
bonnet: #
Switch o. theve hicle. #
Neverto uch the danger zones sur round-
ing moving components, e.g. thero tation
area of thefa n. #
Remo vejewe llery and watches. #
Keep items of clo thing and hair away
from moving pa rts. &
W
WARNING
ARNING Risk of injury from touching
components under voltage
The ignition system and the fuel injection sys-
te m operate at high voltage. You could receive
an elect ric shoc k. #
Neverto uch ignition system or fuel injec-
tion system components when theve hi-
cle is switched on. The live components include
thefo llowing, for
ex ample:
R Ignition coils
R Fuel injectors 338
338
Maintenance and care

R
Electric lines tothe ignition coils and the fuel
injectors &
W
WARNING
ARNING Risk of burns from hot compo-
nent parts in the engine compartment
Cer tain component parts in the engine com-
partment can be very hot, e.g. the engine, the
cooler and parts of theex haust system. #
Allow the engine tocool down and only
to uch component parts described in the
fo llowing. &
W
W ARNING
ARNING Risk of injury from using the
windscreen wipers when the bonnet is
open
If th e windscreen wipers start moving when
th e bonnet is open, you could be trapped by
th e wiper linkage. #
Always switch o. the windscreen wipers
and theve hicle /r stifyo u need toopen
th e bonnet. Opening t
Opening t
he bonnet
he bonnet #
Torelease the bonnet, pull on handle 1. #
Push yellow handle 1onthe bonnet catch to
th e leT as far as it will go (palm down wards).
LiT the bonnet until it is automatically raised
by the pneumatic spring.
Closing t
Closing t he bonnet
he bonnet #
Lowe rth e bonnet and let it drop from a height
of appr oximately 20 cm. Maintenance and care
339
339