ECU MERCEDES-BENZ B-CLASS HATCHBACK 2021 Owner's Guide

The
tailgate can open or close unintentionally in
th efo llowing situations:
R A person's arms or legs are moving in the sen-
sor de tection range, e.g. when polishing the
ve hicle or picking up objects.
R Objects are mo ved or placed behind theve hi-
cle, e.g. the hose of a fuel dispenser, a charg-
ing cable, or lug gage
R Clamping straps, tarp aulins or other co verings
are pulled overth e bumper.
R A pro tective mat with a leng threaching over
th e boot sill down into the de tection range of
th e sensors is used.
R The pr otective mat is not secured cor rectl y.
R Workis being done on the trailer hitch, trailers
or rear bicycle rack s.
Deactivate the function of theke y (/ page 82) or
do not car rytheke y about your person in such
situations. Limiting t
Limiting t
he opening angle of t
he opening angle of t he t
he tailg
ailgate
ate A A
ctiv ctiv ating t
ating t he opening angle limit
he opening angle limit er
er
Yo u can limit the opening angle of theta ilgate in
th eto p half of its opening range up toa point
shortly before the end position. #
Stop the opening procedure of theta ilgate at
th e desired position. #
Press and hold the closing button on theta il-
ga te until you hear a short acoustic signal.
The opening angle limiter will be activated. The
ta ilgate will then stop in the stored position
when opened.
To open theta ilgate full y,pull the handle on the
outside of theta ilgate again aTer it has stopped
automaticall y.
Deactiv
Deactiv ating t
ating the opening angle limit
he opening angle limit er
er #
Press and hold the closing button on theta il-
ga te until two short acoustic signals sound. U
Unloc
nloc king t
king t he t
he tailg
ailgat
ate wit
e wit h t
h the emerg
he emerg encykey
ency key R R
eq eq uir
uir ements:
ements:
R The rear seat backrest has been folded
fo rw ard.
R The load compartment co ver has been
re mo ved. #
Remo vethe emer gency key (/ page 83). 94
94
Opening and closing

Oper
Oper
ating t
ating t he memor
he memor y function
y function S S
t tor
or ing
ing #
Set the desired position for all systems. #
Brie0y press memory button Vandthen
press preset position 0037,TorU
within thre e seconds. #
T
T o call up:
o call up: press and brie0y hold one of preset
position buttons 0037,TorU.
ATer releasing the button, all systems are
mo ved into the stored position. S
S
t
to
o w
w ag
ag e ar
e ar eas
eas N
No
ot
tes on loading t
es on loading t he v
he vehicle
ehicle &
D
DAN
AN GER
GER Risk of poisoning from exhaust
ga ses
Combustion engines emit poisonous exhaust
ga ses, such as carbon monoxide. Exhaust
ga ses can enter theve hicle interior if theta il-
ga te is open when theve hicle is running,
especially if theve hicle is in motion. #
Always switch o. theve hicle before
opening theta ilgate. #
Never drive with theta ilgate open. &
W
WARNING
ARNING Risk of injury from unsecured
items in theve hicle
If objects, lug gage or loads are not secured or
not secured su1cient ly,they could slip, tip
ov er or be thro wn around and thereby hit vehi-
cle occupants.
There is a risk of injur y,particular lyin the
eve nt of sudden braking or a sudden change
in direction. #
Always st owobjects in such a wayth at
th ey cannot be thro wn around. #
Before the journe y,secure objects, lug-
ga ge or loads against slipping or tipping
ove r. &
W WARNI NG
ARNI NGRisk 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 brac kets cannot alw aysreta in all
objects they contain. 118
118
Seats and st
owing

There is a
risk of injur y,particular lyin the
eve nt of braking manoeuvres or abrupt
ch anges in direction. #
Always st owobjects so that they cannot
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. #
Stow and secure objects that are heavy,
hard, poin ted, sharp-edged, fragile or too
lar ge inthe load compartment. &
W
W ARNING
ARNING Risk of accident from objects in
th e driver's foot we ll and front-passenger
fo ot we ll
Objects in the driver's foot we ll and front-
passenger foot we ll may impede pedal tr avel or
block a depressed pedal.
This jeopardises the operating and road saf ety
of theve hicle. #
Stow all objects in theve hicle securely
so that they cannot getinto the driver's
fo ot we ll or front-passenger foot we ll. #
Always /t the 0oor mats securely and as
prescribed in order toensure that there
is alw ays su1cient clearance forthe
pedals. #
Do not use loose 0oor mats and do not
lay multiple 0oor mats on top of one
ano ther. V V
ehicles wit
ehicles wit h aut
h automatic fr
omatic fr ont passeng
ont passeng er airbag
er airbag
shut
shut o.:
o.: objects trapped under the front
passenger seat may inter fere with the function of
th e automatic front passenger airbag shuto. or
damage the system. Please obser vethe no tes on
th e function of the automatic front passenger air-
bag shuto. (/ page 55). &
W
WARNING
ARNING ‑ Risk of accident or injury
when using the cup holder while theve hi-
cle is in motion
The cup holder cann othold a container secure
while theve hicle is in motion. If
yo u use a cup holder while theve hicle is in
motion, the container may be 0ung around
and liquids could be spilled. The vehicle occu-
pants may come into contact with the liquid
and if it is hot, they could be scalded. Yo u
could be distracted from tra1c conditions and
yo u may lose control of theve hicle. #
Only use the cup holder when theve hicle
is stationar y. #
Only use the cup holder for containers of
th eright size. #
Always close the container, particular lyif
th e liquid is hot. *
N NOOTE
TE Damage tothe cup holder When
there ar armrest is folded back the cup
holder could become damaged. #
Only fold there ar armrest back when the
cup holder is closed. Seats and st
owing
119
119

*
N
NO
OTE
TE Damage tothere ar armrest due to
body weight When
folded out, there ar armrest can be
damaged bybody weight. #
Do not sit or support yourself on there ar
seat armrest. &
W
WARNING
ARNING Risk of injury due toan open
load compartment 0oor
If yo u drive with the load compartment 0oor
open, objects could be 0ung around and hit
ve hicle occupants as a result. There is a risk
of injur y,particular lyin theev ent of sudden
braking or a sudden change in direction. #
Always close the load compartment 0oor
before a journe y.&
W
WARNI NG
ARNI NG‑ Risk of /re and injury from the
hot cigar ette lighter
Yo u can burn yourself if youto uch the hot
heating element or the soc ket of the cigar ette
lighter. In addition, 0ammable materials may ignite if:
R you drop the hot cigar ette lighter
R ach ild holds the hot cigar ette lighter to
objects, forex ample #
Always hold the cigar ette lighter bythe
knob. #
Always make sure that the cigar ette
lighter is out of reach of children. #
Never lea vechildren unattended in the
ve hicle. &
W
WARNING
ARNING Risk of burns from theta ilpipe
and tailpipe trims
The exhaust tailpipe and tailpipe trims can
become very hot. If you come into contact
with these parts of theve hicle, you could burn
yo urself. #
Always be particular lycareful around the
ta ilpipe and theta ilpipe trims and super-
vise children especially closely in this
area. #
Allow vehicle parts tocool down before
to uching them. The driving
characteristics of your vehicle are
dependent on the distribution of the load within
th eve hicle. You should bear thefo llowing in mind
when loading theve hicle:
R neverex ceed the permissible gross mass or
th e permissible axle loads forth eve hicle
(including occupants).
Information can be found on theve hicle identi-
/cation plate (/ page 394).
R the load must not pr otru de abo vethe upper
edge of the seat backrests.
R always use the partition net when transporting
objects in the load compartment.
R always place the load behind unoccupied
seats if possible.
R secure the load using the tie-down eyes and
distribute the load evenl y. 120 120
Seats and st
owing

Load com
Load com
par
partment cov
tment cov er
er Inst
Inst
alling and r
alling and r emo
emoving t
ving t he load com
he load com par
partment
tment
cov
cov er
er &
W
WARNING
ARNING Risk of injury or death due to
poor lysecured objects
The load compartment co ver alone cannot
secure or restrain he avy objects, items of lug-
ga ge or heavy loads.
Yo u could be hit byan unsecured load, partic-
ular lyin theev ent of abrupt changes in direc-
tion, sudden braking or an accident. #
Always st owobjects in such a wayth at
th ey cannot be thro wn around. #
Secure objects, lug gage or loads against
slipping or tipping over,e.g. byusing
lashing material, even if you are using
th e load compartment co ver. Re
quirements:
R Do not load the load compartment co ver with
more than 2.5 kg. %
Please no tethat the load compartment co ver
must not be pushed fur ther upwards when the
ta ilgate is open. #
T
To r
o r emov
emov e:
e: pull hanger 3ontheta ilgate
upwards out of eyelet 1and unhook it. #
Swivel the load compartment co ver down-
wa rds and pull it evenly out of the guide rails on
theright and leT in the direction of ar row
4 . #
T
To inst
o inst all:
all:place the load compartment co ver
onto the guide rails on the leT and right. #
Slide the load compartment co verfo rw ards
ev enly in the guide rails on theright and leT
with bo thhands until it engages. #
Swivelth e load compartment co ver upwards
and hook hanger 3through eyelet 2. #
Pull hanger 3down wards into eyelet 1until
it engages.
% Please ensure that the load compartment
co ver is lying 0at on the guide rails on the
ri ght and leT when theta ilgate is closed. A
A
tt
tt ac
ac hing/r
hing/r emo
emoving t
ving t he par
he par titioning net
titioning net &
W
WARNING
ARNING Risk of injury or death due to
poor lysecured objects
The partitioning net alone cann otsecure or
re strain he avy objects, items of lug gage or
heavy loads. 126
126
Seats and st
owing

Yo
u could be hit byan unsecured load, partic-
ular lyin theev ent of abrupt changes in direc-
tion, sudden braking or an accident. #
Always st owobjects in such a wayth at
th ey cannot be thro wn around. #
Secure objects, lug gage or loads against
slipping or tipping over,e.g. byusing
lashing material, even if you are using
th e partitioning net. Fo
r saf etyre asons, alw ays use a partitioning net
when transporting a load.
Damaged partitioning nets can no lon ger ful/l
th eir functions and must be replaced. Visit a quali-
/ed specialist workshop. A
A tt tt ac
ac hing
hing Pa
rtitioning net without load compartment enlar ge-
ment Pa
rtitioning net with load compartment enlar gement #
Hook partition net 1into holders 2onthe
leT and right on thero of lining. #
Without load compartment enlar gement:
attach hooks 3totie-down eyes 4 onthe
leT and right in such a wayth at hooks 3
point backwards. Seats and st
owing
127
127

A
A
tt
tt ac
ac hing t
hing t he lugg
he lugg ag
age net
e net &
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 brac kets cannot alw aysreta in all
objects they contain.
There is a risk of injur y,particular lyin the
eve nt of braking manoeuvres or abrupt
ch anges in direction. #
Always st owobjects so that they cannot
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. #
Stow and secure objects that are heavy,
hard, poin ted, sharp-edged, fragile or too
lar ge inthe load compartment. Obser
vethe no tes on loading theve hicle. &
W
WARNING
ARNING Risk of injury due toan open
load compartment 0oor
If yo u drive with the load compartment 0oor
open, objects could be 0ung around and hit
ve hicle occupants as a result. There is a risk
of injur y,particular lyin theev ent of sudden
braking or a sudden change in direction. #
Always close the load compartment 0oor
before a journe y. #
LiT the load compartment 0oor upwards using
th e handle, remo veit from the load compart-
ment and put it down on a clean sur face. #
Align luggage net 1on load compartment
0oor 3sothat st rap2 is positioned at han-
dle 4 and points upwards. 130
130
Seats and st
owing

opened when
thero of luggage rack is /t-
te d. #
Position the load on thero of luggage
ra ck in such a wayth at theve hicle will
not sus tain damage even when it is in
motion. *
N
NO OTE
TE Damage tothe panorama sliding
sunroof due tonon-appro vedro of luggage
ra cks The panorama sliding sunroof may be dam-
aged bythero of luggage rack ifyo u attem ptto
open it when using a roof luggage rack not
te sted and appro vedfo r Mercedes-Benz. #
When a roof luggage rack is /t ted, open
th e panorama sliding sunroof only if this
has been tested and appro vedfor
Mercedes-Benz.
The pano rama sliding sunroof may be raised
to allow ventilation of theve hicle interior. *
N
NOOTE
TE Damage tothe co vers The co
vers may be damaged and scratched
when being opened. #
Do not use me tallic or hard objects. #
Carefully fold co vers 1 upwards in the direc-
tion of the ar row. #
Secure thero of luggage rack tothefa stening
points benea thcovers 1 . #
Comply with the installation instructions of the
ro of luggage rack manufacturer. #
Secure the load on thero of luggage rack. Soc
ke
Soc kets
ts Using t
Using t
he 12 V soc ket
he 12 V soc ket R
R
eq
eq uir
uir ements:
ements:
R Only devices up toa maximum of 180 W
(15 A) are permissible.
Depending on theve hicle equipment, theve hicle
has thefo llowing 12 V soc kets:
R Inthe st owage compartment in the front
centre console
R Inthe load compartment Seats and st
owing
133
133

Example: 12 V soc
ket in the st owage compartment
in the front centre console #
Fold up soc ket cap 1. #
Inse rtthe plug of the device.
12 V soc ke
12 V soc ket in t
t in t he st ow
he st owag
age com
e com par
partment wit
tment wit h
h
cov
cov er:
er:ifyo u ha veconnected a device tothe 12 V
soc ket, lea vethe co ver of the st owage compart-
ment open. USB por USB por
t in t
t in the r
he rear passeng
ear passeng er com
er compar
partment
tment %
Depending on theve hicle equipment, the
design of the st owage compartment and thenumber of USB ports in
there ar cent recon-
sole may vary.
When theve hicle is switched on, you can charge a
USB device, such as a mobile phone, at USB ports
using a suitable charging cable. W W
ir
ireless c
eless c har
harging of t
ging of t he mobile phone and con-
he mobile phone and con-
nection wit
nection wit h t
h the e
he e xt
xter
er ior aer
ior aer ial
ial N
No
ot
tes on wir
es on wir elessl
elessly c
y char
har ging t
ging t he mobile phone
he mobile phone &
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 cannot alw 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 no tes on loading theve hicle. &
W WARNING ARNING Risk of /re from placing objects
in the mobile phone st owage compart-
ment
Placing other objects in the mobile phone
st ow age compartment could constitute a /re
hazard. #
Apart from a mobile phone, do not place
any other objects in the mobile phone
st ow age compartment, especially those
made of me tal. 134 134
Seats and st
owing

#
Place the mobile phone as close tothe centre
of the mar ked sur face on mat 1as possible
with the display facing upwards.
When a message is shown in the multimedia
system, the mobile phone is being charge d.
Malfunctions during thech arging process are
shown in the central displa y.
% The mat can be remo vedfo r cleaning, e.g.
using clean, luk ewarmwater.
S
S t
to
o w
w ag
ag e com
e com par
partment wit
tment without cov hout cover
er
Make sure the mobile phone is proper lystored
and secu redto prev ent it from falling out while
yo u are driving. #
T
T o secur
o secur e t
e the mobile phone:
he mobile phone: swing lever2
out.
R
R adio eq
adio eq uipment appr ov
uipment appr oval number
al number s f
s for Br
or Br azil
azil
This device operates on a secondary basis, that is
to say it has no pr otection against harmful inter-
fe re nce, not even from the same type of stations,
and must not cause inter fere nce with systems
ope rating on a prima rybasis.
This product is permitted in accordance with the
procedure de/ned in Directive 242/2000 bythe
Brazilian telecommunications agency ANATEL and
meets the applicable tech nical requ irements.
Fu rther information is available on the ANATEL
we bsite. www.anatel.go v.br #
Further information on the declaration of con-
fo rm ity forve hicle components which receive
and/or transmit radio waves. F
F
itting/r
itting/r emo
emoving t
ving t he
he0oor
0oor mats
mats &
W
WARNING
ARNING Risk of accident due toobjects
in the driver's foot we ll
Objects in the driver's foot we ll may impede
pedal tr avel or block a depressed pedal.
This jeopardises the operating and road saf ety
of theve hicle. #
Stow all objects in theve hicle securely
so that they cannot getinto the driver's
fo ot we ll. #
Always /t the 0oor mats securely and as
prescribed in order toensure that there
is alw ays su1cient room forth e pedals. #
Do not use loose 0oor mats and do not
place 0oor mats on top of one ano ther. 136 136
Seats and st
owing