2021 MERCEDES-BENZ B-CLASS HATCHBACK ECU

Approv
Approv
al cat
al categor
egories in accor
ies in accor dance wit
dance with UN-R44
h UN-R44 Example of an app
rova l label
R U
Univniv er
er sal:
sal: child restraint systems in the "Uni-
ve rsal" catego ryare appr ovedfo r installation
in vehicles. They can be used, in accordance
with overviews ofthe suitability of seats for
securing child restraint systems, on seats
labelled U, UF or IU F. The identi/ca
tion IUFrefers to ISOFIX child
re straint systems in the "Universal" categor y.
These child restraint systems must also be
secu red using TopTe ther or support points.
R Semi-U
Semi-U niv
niver
ersal:
sal: child restraint systems in the
"Semi-Universal" category may only be used if
th eve hicle and vehicle seat are listed in the
ch ild restraint system manufactu rer's vehicle
model list.
R V Vehicle-speci/c: ehicle-speci/c: child restraint systems in the
"vehicle-speci/c" category may only be used if
th eve hicle and vehicle seat are lis ted in the
ch ild restraint system manufactu rer's vehicle
model list. App
rov
Approv al cat al categor
egories in accor
ies in accor dance wit
dance with UN-R129
h UN-R129 Example of an app
rova l label
R i‑Size:
i‑Size: child restraint systems in the "i‑Size"
category are appr ovedfo r installation in vehi-
cles with i‑Size mounting brac kets. They can
be used, in accordance with overviews ofthe
suitability of seats for securing child restraint
systems, on seats labelled i‑ U. Occupant saf
ety
67
67

The identi/ca
tion i‑Urefers to i‑Size child
re straint systems in the "Universal" categor y.
These child restraint systems must also be
secu red using TopTe ther or support points.
Observ
Observ e t
e the suit
he suit ability of v
ability of v ehicle seats
ehicle seats
Depending on the appr oval catego ry,th ere are
fo rw ard-facing and rear wa rd-facing child restraint
systems. Their use can be restric tedfo r cer tain
ve hicle seats:
R Suitability of seats for attaching ISOFIX child
re straint systems (/ page 68)
R Suitability of seats for securing i‑Size child
re straint systems (/ page 69).
R Suitability of seats for attaching belt-secured
ch ild restraint systems (/ page 73) F
F
itting an ISOFIX or i-Size c
itting an ISOFIX or i-Size c hild r
hild r es
estrtraint syst
aint syst em
em
on t
on t he
heleT
leT and r
and r ight r
ight r ear seats
ear seats Ov
Ov
er
ervie
vie w of suit
w of suit ability of t
ability of t he seats f
he seats f or att
or attac
aching
hing
ISOFIX c
ISOFIX c hild r
hild res
estrtraint syst
aint syst ems
ems
ISOFIX is a standardised securing system for spe-
cially designed child restraint systems.
® The symbol indicates seats suitable for
attaching an ISOFIX child restraint system
in acco rdance with UN R44 (/ page 66).
At tach only child restraint systems that are
appr oved in accordance with UN R44 as
per thefo llowing ISOFIX tables.
Carr
Carr y cot
y cot Size class –
Size class –
Eq Eq
uipment
uipment LeT/r LeT/r
ight ightr
rear seat
ear seat
F – ISO/L1 X
G – ISO/L2 X
X Not suitable for an ISOFIX child restraint system in this we ight
gr oup and/or size class. W W
eight gr
eight group 0 (up t
oup 0 (up t o 10 k
o 10 kg and up tg and up t o appro
o approx. 6
x. 6
mont
mont hs)
hs) Size class –
Size class –
Eq Eq
uipment
uipment LeT/r
LeT/r
ight
ightr
rear seat
ear seat
E – ISO/R 1IL
IL Sui table for ISOFIX child restraint systems acco rding totheta ble
in "Overview of there commended child restraint systems", or if the
ve hicle and the seat are listed on thech ild restraint system manu-
fa cturer's vehicle model list. W
W
eight gr
eight group 0+ (up t
oup 0+ (up t o 13 k
o 13 kg and up tg and up t o appro
o approx.
x.
15 mont
15 mont hs)
hs) Size class –
Size class –
Eq Eq
uipment
uipment LeT/r LeT/r
ight ightr
rear seat
ear seat
E – ISO/R 1IL
D – ISO/R2,
ISO/R2X IL68 68
Occupant saf
ety

Size class –
Size class –
Eq Eq
uipment
uipment LeT/r
LeT/r
ight
ightr
rear seat
ear seat
C – ISO/ R3 IL (1)
IL Suitable for ISOFIX child restraint systems acco rding totheta ble
in "Overview of there commended child restraint systems", or if the
ve hicle and the seat are listed on thech ild restraint system manu-
fa cturer's vehicle model list.
(1) When using a child rest raint system of size class (ISO/R3),
mo vethe front seat into the highest position. Make sure that the
seat backrest of thefront seat does not rest against thech ild
re straint system. W
W
eight gr
eight group 1 (9–18 k
oup 1 (9–18 kg and appro g and approx. 9 mont
x. 9 monthsto
hs to
4 y
4 y ear
ear s)
s) Size class –
Size class –
Eq Eq
uipment
uipment LeT/r
LeT/r
ight
ightr
rear seat
ear seat
D – ISO/R2,
ISO/R2X IL
C – ISO/R3 IL (1)
B – ISO/F2 IUF Size class – Size class –
Eq Eq
uipment
uipment LeT/r
LeT/r
ight
ightr
rear seat
ear seat
B1 – ISO/F2X IUF
A – ISO/F3 IUF IL Suitable for ISOFIX child restraint systems acco rding totheta ble
in "Overview of there commended child restraint systems", or if the
ve hicle and the seat are listed on thech ild restraint system manu-
fa cturer's vehicle model list.
IUF Suitable forfo rw ard-facing ISOFIX child restraint systems of the
"Universal" category in this we ight group.
(1) When using a child restraint system of size class (ISO/R3),
mo vethe front seat into the highest position. Make sure thatth e
seat backrest of the front seat does not rest against thech ild
re straint system. Ov Ov
er
er vie
vie w of suit
w of suit ability of t
ability of t he seats f
he seats for att
or attac
aching
hing
i‑Size c
i‑Size c hild r
hild res
estrtraint syst
aint syst ems
ems
i‑Size is a standardised securing system for spe-
cially designed child restraint systems.
° The symbol indicates seats suitable for
attaching an i‑Size child restraint system in
acco rdance with UN R129 (/ page 66).
Child restraint systems that are permitted
in accordance with UN R44 as per the ISO-
FIX tables (/ page 68) or UN R129 as per
th efo llowing i‑Size tables may be attached.
i‑Size c
i‑Size c hild r
hild res
estrtraint syst
aint syst ems (ISO/R2, ISO/F2X,
ems (ISO/R2, ISO/F2X,
ISO/B2, ISO/B3)
ISO/B2, ISO/B3) F
F
r
ront passeng
ont passeng er seat
er seatLeT/r
LeT/right
ight r
rear seat
ear seat
Xi ‑U
X Not suitable for an i-Size child
re straint system in the "Univer-
sal" categor y. i-U Suitable
forfo rw ard-facing
and rear wa rd-facing i-Size child
re straint systems in the "Univer-
sal" categor y. Occupant saf
ety
69
69

F
F
itting t
itting t he ISOFIX or i‑Size c
he ISOFIX or i‑Size c hild r
hild res
estrtraint syst
aint syst em
em
on t
on t he
heleT
leT and r
and r ight r
ight r ear seats
ear seats &
W
WARNING
ARNING Risk of accident if there ar
ben chseat, rear seat and seat backrest
are not engaged
The rear ben chseat, rear seat and seat bac k-
re st ma yfo ld forw ards, even while theve hicle
is in motion.
R As a result, theve hicle occupant will be
pressed into the seat belt with increased
fo rc e. The seat belt will not be able topro-
te ct as intended and could cause addi-
tional injur y.
R Objects or loads in the boot or load com-
partment cannot be restrained bythe seat
backrest. #
Make sure that there ar ben chseat, the
re ar seat and the seat backrest are
engaged before every trip. If
th ere ar seat backrest is not engaged and
loc ked in place, there d lock veri/cation indicator
will be visible. &
W
WARNING
ARNING Risk of inju ryor death if the
permissible gross mass of thech ild and
ch ild restraint system toge ther is excee-
ded.
To o much load may be placed on the ISOFIX
or i‑Size child restraint systems and thech ild
may not be restrained co rrectly in theev ent of
an accident, forex ample. #
Ifth ech ild and thech ild restraint system
to get her weigh more than 33 kg, only
use an ISOFIX or i‑Size child restraint
system wi thwhich thech ild is secured
with theve hicle seat belt. #
Also secure thech ild restraint system
wi th th eTo pTe ther belt, if available. Alw
ays comply with the information about the
mass of thech ild restraint system:
R inthe manufacturer's installation and operat-
ing inst ructions forth ech ild restraint system
used
R on a label on thech ild restraint system, if
present Re
gula rly ch eck that the permissible gross mass
of thech ild and child restraint system is still com-
plied wi th.
When /tting a child restraint system, obse rvethe
fo llowing:
0073 Always obser vethe cor rect use of the seats
and consider their suitability for attaching a
ch ild restraint system.
ISOFIX child seat securing system
(/ page 68)
or
i‑Size child seat securing system
(/ page 69)
0073 Always comply with the manufacturer's
installation and operating instructions forthe
ch ild restraint system used.
0073 Makesure that thech ild's feet do not touch
th e front seat. If necessar y,mo vethe front
seat slightly forw ards.
® When /tting an ISOFIX child restraint sys-
te m, also obser vethefo llowing:
0073 When using a bab
When using a bab y car seat in w y car seat in weightgr
eight group
oup
0/0+ and a r
0/0+ and a r earw
earwar
ard-f
d-f acing c
acing c hild r
hild res
estrtraint
aint 70
70
Occupant saf
ety

#
Guide TopTe ther belt 4under head restraint
1 between the two head restraint ba rs. #
Hook TopTe ther hook 3into TopTe ther
anchorage 2without twisting. #
Tension TopTe ther belt 4. In doing so, com-
ply with thech ild restraint system manufactu r-
er's installation inst ructions. #
If necessar y,slide head restraint 1down-
wa rds (/ page 112). Make sure that you do
not inter fere with the cor rect routing of To p
Te ther belt 4. Secur
Secur
ing t
ing the c
he child r
hild r es
estrtraint syst
aint syst em wit
em with t
h the seat
he seat
belt
belt N
No
ot
tes on t
es on t he suit
he suitability of seats f
ability of seats f or att
or attac
aching belt-
hing belt-
secur
secur ed c
ed child r
hild r es
estrtraint syst
aint syst ems
ems
R
R ear seats
ear seats
W
W eight cat
eight cat egor
egory 0: up t
y 0: up t o 10 kg
o 10 kg
LeT/ right rear seat U, L
Centre rear seat 1
U, L
W W eight cat eight cat egor
egory 0+: up t
y 0+: up t o 13 k
o 13 kgg
LeT/right rear seat U, L
Centre rear seat 1
U, L
W
W eight cat
eight cat egor
egory I: 9 t
y I: 9 t o 18 kg
o 18 kg
LeT/right rear seat U, L
Centre rear seat 1
U, L
W
W eight cat
eight cat egor
egory II: 15 t
y II: 15 t o 25 k
o 25 kgg
LeT/right rear seat U, L Centre
rear seat 1
U, L
W
W eight cat
eight cat egor
egory III: 22 t
y III: 22 t o 36 kg
o 36 kg
LeT/right rear seat U, L
Centre rear seat 1
U, L
1 Child restraint systems wi th a supporting brac ket are
not suitable forth is seat.
U Suitable forch ild restraint systems of the "Universal"
category in this we ight categor y.
L Suitable for semi-universal child restraint systems
acco rding totheta ble in "Recommended child restraint
systems", or if theve hicle and the seat are listed in the
ch ild restraint system manufacturer's vehicle model list. N
No
ot
tes on c
es on c hild r
hild res
estrtraint syst
aint syst ems on t
ems on t he fr
he front
ont
passeng
passeng er seat
er seat
R If it is absolutely necessary foryo uto /t a
ch ild restraint system tothe front passenger
seat, be sure toobser vethe information on
ch ild restraint systems on the front passenger
seat (/ page 77). Occupant saf
ety
73
73

R
Obser vethe speci/c inst ructions forth ere ar-
wa rd-facing and forw ard-facing child restraint
systems. If the front passenger seat is occu-
pied, ensure, bo thbefore and during the jour-
ne y,that the status of the front passenger air-
bag is cor rect forth e cur rent situation
(/ page 57).
F
F r
ront passeng
ont passeng er seat
er seat
W
W eight cat
eight cat egor
egory 0: up t
y 0: up t o 10 kg
o 10 kg
Fr ont passenger airbag enabled 1
X
Fr ont passenger airbag disabled 1, 2
U, L
W
W eight cat
eight cat egor
egory 0+: up t
y 0+: up t o 13 k
o 13 kgg
Fr ont passenger airbag enabled 1
X
Fr ont passenger airbag disabled 1, 2
U, L
W
W eight cat eight cat egor
egory I: 9 t
y I: 9 t o 18 kg
o 18 kg
Fr ont passenger airbag enabled 1
UF, L
Fr ont passenger airbag disabled 1, 2
U, L
W
W eight cat eight cat egor
egory II: 15 t
y II: 15 t o 25 k
o 25 kgg Fr
ont passenger airbag enabled 1
UF, L
Fr ont passenger airbag disabled 1, 2
U, L
W
W eight cat
eight cat egor
egory III: 22 t
y III: 22 t o 36 kg
o 36 kg
Fr ont passenger airbag enabled 1
UF, L
Fr ont passenger airbag disabled 1, 2
U, L
1 Ad just the seat cushion inclination so that the
front edge of the seat cushion is in the highest posi-
tion and there ar edge of the seat cushion is in the
lo we st position.
2 The vehicle is equipped with automatic front
passenger airbag shuto.. The PASSENGER AIR BAG
OFF indica tor lamp must be lit.
X Not suitable forch ildren in this we ight categor y.
U Sui table forch ild restraint systems of the "Univer-
sal" category in this we ight categor y. L Suitable
for semi-universal child restraint systems
acco rding totheta ble in "Recommended child
re straint systems", or if theve hicle and the seat are
listed in thech ild restraint system manufacturer's
ve hicle model list.
UF Suitable forfo rw ard-facing child restraint sys-
te ms of the "Universal" category in this we ight cate-
gor y. Secur Secur
ing t ing the c
he child r
hild r es
estrtraint syst
aint syst em wit
em with t
h t he seat
he seat
belt on t
belt on t he r
he r ear seat
ear seat &
W
WARNING
ARNING Risk of accident if there ar
ben chseat, rear seat and seat backrest
are not engaged
The rear ben chseat, rear seat and seat bac k-
re st ma yfo ld forw ards, even while theve hicle
is in motion.
R As a result, theve hicle occupant will be
pressed into the seat belt with increased
fo rc e. The seat belt will not be able topro- 74
74
Occupant saf
ety

te
ct as intended and could cause addi-
tional injur y.
R Objects or loads in the boot or load com-
partment cannot be restrained bythe seat
backrest. #
Make sure that there ar ben chseat, the
re ar seat and the seat backrest are
engaged before every trip. If
th ere ar seat backrest is not engaged and
loc ked in place, there d lock veri/cation indicator
will be visible.
When
When /tting /tting a belt-secur
a belt-secur ed c
ed child r
hild r es
estr
traint sy st
aint syst em,
em,
obse rv
observ e t
e the f
he f ollo
ollowing:
wing:
0073 Always comply with the manufacturer's
installation and operating inst ructions forthe
ch ild restraint system used.
0073 For a child restraint system in the "Universal"
or "Semi-Universal" categor y,make sure that
th e system has been appr ovedfo rth eve hicle
seat. Obser
vethe no tes under "Suitability of seats
fo r attaching belt-secured child restraint sys-
te ms" (/ page 73).
0073 When using a w
When using a w eight cat
eight categor
egory 0/0+ bab
y 0/0+ bab y
y
car seat and a w
car seat and a w eight cat
eight categor
egory I r
y I rearw
earw ar
ard-
d-
f
f acing c
acing c hild r
hild res
estrtraint syst
aint syst em on a r
em on a r ear seat:
ear seat:
adjust the front seat so that the seat does
not touch thech ild restraint system.
0073 When using a w
When using a w eight cat
eight categor
egory I f
y I forw
orw ar
ar d-
d-
f
f acing c
acing c hild r
hild res
estr
traint sy st
aint syst em:
em:remo vethe
head restraint from there specti veseat, if
possible.
ATer thech ild restraint system has been
re mo ved, replace the head restraint immedi-
atel y and adjust all head restraints co rrectl y.
0073 The backrest of thefo rw ard-facing child
re straint system must, as far as possible, be
re sting on the seat backrest of there ar seat.
0073 Ifth e head restraint of thech ild seat cannot
be fully extended when it is installed in the
ve hicle, this will result in restrictions on the
maximum size setting forch ild restraint sys-
te ms in weight category II or III. Contact with
thero of when the head
re straint is ful lyex tended and loc ked in place
will not result in any restrictions on use.
0073 Thechild restraint system must not be put
under strain between thero of and the seat
cushion and/or be /t tedfacing the wrong
direction. Where possible, adjust the seat
cushion inclination accordingl y.
0073 Thechild restraint system must not be put
under strain bythe head restraint. Adjust the
head restraints as appropria te.
0073 Make sure that thech ild's feet do not touch
th e front seat. If necessar y,mo vethe front
seat slightly forw ards. #
Installth ech ild restraint system.
The entire base of thech ild restraint system
must al ways rest on the seat sur face of the
re ar seat. #
Always make sure that the shoulder belt strap
is cor rectly routed from the seat belt outlet of
th eve hicle tothe shoulder belt guide on the
ch ild restraint system.
The shoulder belt strap must be routed
fo rw ard from the seat belt outlet. Occupant saf
ety
75 75

N
N
o
ot
tes on v
es on v ehicles wit
ehicles wit hout aut
hout automatic fr
omatic fr ont
ont
passeng
passeng er airbag
er airbag shut
shuto.
o. St
icke r visible when the front passenger door is
open
Ve hicles without automatic front passen ger airbag
shuto. ha vea special stic ker a1xed tothe side of
th e cockpit on the front passenger side. Make sure
you obser vethefo llowing information:
R Never /t a rear wa rd-facing child restraint sys-
te m to the front passenger seat
R Always /t a rear wa rd-facing child restraint sys-
te m to a suitable rear seat
- Seats suitable for attaching belted child
re straint systems (/ page 73).
- Secure thech ild restraint system wi th the
seat belt on there ar seat (/ page 74).
R Notes on rear wa rd-facing and forw ard-facing
ch ild restraint systems on the front passenger
seat (/ page 76)
N
No ot
tes on r
es on r earw
earw ar
ard-f
d-f acing and f
acing and f orw
orwar
ard-f
d-f acing c
acing c hild
hild
r
r es
estr traint syst
aint syst ems on t
ems on t he fr
he front passeng
ont passeng er seat
er seat &
W
WARNING
ARNING Risk of injury or death when
using a rear wa rd-facing child restraint sys-
te m while the front passenger airbag is
enabled
If yo u secure a child in a rear wa rd-facing child
re straint system on the front passenger seat
and thePA SSENGER AIR BAG OFF indicator la
mp is o., the front passenger airbag can
deploy in theev ent of an accident.
The child could be struck bythe airbag. #
Always ensu rethat the front passenger
airbag is disabled. The PASSENGER AIR
BAG OFF indicator la mpmust be lit. #
NEVER use a rear wa rd-facing child
re straint system on a seat wi than ENA-
BLED FRONT AIR BAG. This can result in
th e DEATH of or SERIOUS INJURY tothe
CHILD. Obse
rveth e speci/c inst ructions forth ere ar-
wa rd-facing and forw ard-facing child restraint sys-
te ms (/ page 77). 76
76
Occupant saf
ety