Page 49 of 518

R
when entering or exiting a parking space
while using Active Parking Assist Safely transporting
children in theve hicle Alw
ays obser vewhen children are tr aveling
in theve hicle %
Also strictly obser vethe saf ety no tesfo rthe
specific situation. In this wa yyo u can recog‐
nize po tential risks and avoid dangers if chil‐
dren are tr aveling in theve hicle
(→ page 48).
Be diligent
Bear in mind that neglecting tosecure a child in
th ech ild restra int sy stem may ha veserious con‐
sequences. Alw ays be diligent in securing a child
carefully before everyjou rney.
To impr oveprotection forch ildren younger than
12 years old or under 5 ft(1.50 m) in height,
Mercedes-Benz recommends you obse rvethe
fo llowing information:
R Alw ays secure thech ild in a child restra int
sy stem suitable forth is Mercedes-Benz vehi‐
cle. R
The child restra int sy stem must be appropri‐
ate tothe age, weight and size of thech ild.
R The vehicle seat must be suitable for ins tal‐
ling a child restra int sy stem.
Ac cident statistics show that children secured in
th ere ar seats are generally sa ferth an children
secured in the front seats. Forth is reason,
Mercedes-Benz strongly advises that you ins tall
a ch ild restra int sy stem on a rear seat.
Generic term"child restra int sy stem"
The generic term child restra int sy stem is used
in this Operator's Manual. A child restra int sys‐
te m is, forex ample:
R a baby car seat
R are ar wa rd-facing child seat
R afo rw ard-facing child seat
R ach ild boos ter seat with a backrest and seat
belt guide
Mercedes-Benz recommends using a child
boos ter seat with a backrest.
The child restra int sy stem must be appropriate
to the age, weight and size of thech ild. Observing la
wsand legal requ irements
Alw ays obser vethe legal requ irements when
using a child restra int sy stem in theve hicle.
Observing standards forch ild restra int sys‐
te ms
All child restra int sy stems must meet thefo llow‐
ing standards:
R U.S. Federal Mo torVe hicle Saf etySt andards
21 3 and 225
R Canadian Mo torVe hicle Saf etySt andards
21 3 and 210.2
Confirmation that thech ild restra int sy stem
complies with thest andards can be found on an
instruction label on thech ild restra int sy stem.
This confi rmation can also be found in the ins tal‐
lation instructions that are included with the
ch ild restra int sy stem. Occupant saf
ety47
Page 50 of 518

De
tecting risks, avoiding dan ger Securing sy
stems forch ild restra int sy stems
in theve hicle
Only use thefo llowing securing sy stems forch ild
re stra int sy stems:
R theLA TC H-type (ISOFIX) mounting brac kets
R theve hicle's seat belt sy stem
Ins talling a LATC H-type (ISOFIX) child restra int
sy stem is prefer red.
Simply attaching tothe securing rings on the
ve hicle can reduce therisk of ins talling thech ild
re stra int sy stem incor rectl y.
When securing a child with the integrated seat
belt of theLA TC H-type (ISOFIX) child restra int
sy stem, alw ays comply with the permissible
gross weight forth ech ild and child restra int sys‐
te m (→ page 52).
A boos ter seat may be necessary toachie ve
proper seat belt positioning forch ildren over
40 lbs (18 kg) in weight or until they reach a
height where a thre e-point seat belt can be
ins talled proper lywithout a boos ter seat. Mercedes-Benz
recommends a suitable child
boos ter seat with a backrest and seat belt guide.
Ad vantage of a rear wa rd-facing child
re stra int sy stem
It is preferable totranspo rta baby or a small
ch ild in a suitable rear wa rd-facing child restra int
sy stem. In this case, thech ild sits in the oppo‐
site direction tothe direction of tr avel and faces
ba ckwa rds.
Babies and small children ha vecompa ratively
we ak neck muscles in relation tothe size and
we ight of their head. The risk of injury tothe cer‐
vical spine during an accident can be reduced in
a re ar wa rd-facing child restra int sy stem.
Alw ays secure a child restra int sy stem cor‐
re ctly &
WARNING Risk of inju ryor death caused
by incor rect ins tallation of thech ild
re stra int sy stem
If th ech ild restra int sy stem is incor rectly
ins talled on a suitable seating position, it
cannot per form its intended pr otective func‐
tion. The
child cannot be restra ined in theeve nt of
an accident, heavy braking or a sudden
ch ange of direction. #
Alw ays comply with the manufacturer's
ins tallation instructions forth ech ild
re stra int sy stem and its cor rect use. #
Makesure that the entire base of the
ch ild restra int sy stem alw aysre sts on
th e sitting sur face of the seat. #
Never place objects under or behind
th ech ild restra int sy stem, e.g. cush‐
ions. #
Alw ays use child restra int sy stems with
th e original co ver designed forth em. #
Alw aysre place damaged co vers with
ge nuine co vers. &
WARNING Risk of inju ryor death from
unsecured child restra int sy stems in the
ve hicle
If th ech ild restra int sy stem is not cor rectly
ins talled or secured, it could release in the 48
Occupant saf ety
Page 51 of 518

ev
ent of an accident, sudden braking or a
sudden change in direction.
The child restra int sy stem could be flung
around and hit vehicle occupants. #
Alw ays ins tallch ild restra int sy stems
cor rectl y,eve n when not in use. #
Alw ays comply with thech ild restra int
sy stem manufacturer's ins tallation
instructions. R
Alw ays obser vethech ild restra int sy stem
manufacturer's ins tallation and operating
instructions as well as theve hicle-specific
information:
- Installth eLA TC H-type (ISOFIX) child
re stra int sy stem on there ar seat
(→ page 52).
- Secure thech ild restra int sy stem with the
seat belt on there ar seat (→ page54).
- Secure thech ild restra int sy stem with the
seat belt on the front passenger seat
(→ page 56). Obser vethe specific
instructions forth ere ar wa rd-facing and fo
rw ard-facing child restra int sy stems
(→ page 55).
If th e front passenger seat is occupied,
ensure, bo thbefore and during the jour‐
ne y,that thest atus of the front
passenger front airbag is cor rect forthe
cur rent situation (→ page 42).
R Obse rveth ewa rning labels in theve hicle
interior and on thech ild restra int sy stem.
Do not alter thech ild restra int sy stem &
WARNING Risk of inju rydue tomodifi‐
cations tothech ild restra int sy stem
The child restra int sy stem may no longer
function as it is supposed toifyo u make
modifications or attach objects toit, e.g. toys
or unsuitable accessories. This poses an
increased risk of injury!
Ne ver modify thech ild restra int sy stem. Only
attach accessories which the manufacturer
of thech ild restra int sy stem has authorized
especially forth is ch ild restra int sy stem. Only use
child restra int sy stems which are in
proper working condition &
WARNING Risk of inju ryor death caused
by the use of damaged child restra int
sy stems
Child restra int sy stems or their retaining sys‐
te ms that ha vebeen subjec tedto a load in
an accident may then not be able toper form
th eir intended pr otective function.
The child cannot be restra ined in theeve nt of
an accident, heavy braking or a sudden
ch ange of direction. #
Alw aysre place child restra int sy stems
immediately that ha vebeen damaged or
in vo lved in an accident. #
Have the securing sy stems forth ech ild
re stra int sy stems checked at a qualified
specialist workshop before ins talling a
ch ild restra int sy stem again. Occupant saf
ety49
Page 52 of 518

Av
oiding direct sunlight &
WARNING Risk of bu rns when thech ild
seat is exposed todirect sunlight
If th ech ild restra int sy stem is exposed to
direct sunlight or heat, parts could heat up.
Children could suf fer burns from these parts,
particularly on me tallic parts of thech ild
re stra int sy stem. #
Alw ays make sure that thech ild
re stra int sy stem is not exposed to
direct sunlight. #
Protect it with a blank et,fo rex ample. #
Ifth ech ild restra int sy stem has been
ex posed todirect sunlight, allow it to
cool before secu ring a child into it. #
Never lea vechildren unat tended in the
ve hicle. Obser
vewhen stopping or parking &
WARNING Risk of accident and inju ry
due tochildren and animals left unat ten‐
ded in theve hicle
If yo u lea vechildren and animals unat tended
in theve hicle, they may be able toset the
ve hicle in motion, forex ample by:
R Releasing the parking brake.
R Shifting the automatic transmission out
of park position 005D.
R Starting the engine.
In addition, they may operate vehicle equip‐
ment and become trapped. #
Never lea vechildren and animals unat‐
te nded in theve hicle. #
When leaving theve hicle, alw aysta ke
th e SmartK eywith you and lock the
ve hicle. &
WARNING Risk offata l injury due to
ex posure toextreme heat or cold in the
ve hicle
If people – particularly children – are
ex posed toextreme temp eratures over an
ex tended pe riod of time, there is a risk of
serious or evenfa ta l injur y. #
Never lea veanyone – pa rticularly chil‐
dren – unat tended in theve hicle. #
Never lea veanimals in theve hicle unat‐
te nded. 50
Occupant sa fety
Page 53 of 518
Overview of suitable seats in
theve hicle for in stalling a child restra int sy stem Securing sy
stems forch ild restra int sy stems Ve
hicle seat
Left/right rear seat
Preferred securing sy stem: LA
TC H-type (ISOFIX) child seat securing sys‐
tem Alternati
vesecuring sy stem:
R Vehicle seat belt
Fr ont passenger seat
Securing system:
R Vehicle seat belt Be sure
toobser ve:
R Ifth e front passenger seat is occupied, ensure,
bo th before and during the journe y,that thest a‐
tus of the front passenger front airbag is cor rect
fo rth e cur rent situation (→ page 42).
R Notes on automatic front passenger front airbag
shutoff (→ page 40). Occupant saf
ety51
Page 54 of 518

Ac
tivating/deactivating the seat belt's child
special seat belt retractor &
WARNING Risk of inju ryor death if a
seat belt is unfas tened while theve hicle
is in motion
If th e seat belt is released while theve hicle is
in motion, thech ild restra int sy stem is no
longer cor rectly secu red. The child seat
saf etyfe ature is deactivated and the seat
belt is dr awn in a bit bythe inertia reel.
It is therefore not possible toengage the seat
belt again. #
Pull over and stop theve hicle safely as
soon as possible, paying attention to
ro ad and traf fic conditions. #
Activate thech ild seat saf etyfe ature
again and cor rectly secu rethech ild
re stra int sy stem. When enabled,
the special seat belt retractor
ensures that the seat belts of the front
passenger seat and rear seats do not slac ken
once thech ild restra int sy stem is secured. The seat belts on
thefo llowing seats are equip‐
ped with a special seat belt retractor:
R Front passenger seat
R Rear seats #
Toinstall a child restra int sy stem: when
ins talling a child restra int sy stem, alw ays
obser vethe manufacturer's ins tallation and
operating instructions as well as the informa‐
tion in this Operator's Manual. #
Pull the seat belt smoo thly from the seat belt
outlet. #
Enga gethe seat belt tongue in the seat belt
buckle. #
Toactivate the special seat belt retrac‐
to r:pull the seat belt out fully and let the
inertia reel retract it again.
When the special seat belt retractor is acti va‐
te d, you should hear a ratcheting sound. #
Push thech ild restra int sy stem down until
th e seat belt sits tightly. #
Todeactivate the special seat belt retrac‐
to r:press there lease button of the seat belt
buckle. #
Hold the seat belt tongue and guide ba ckto
th e seat belt outlet. Installing
theLA TC H-type (ISOFIX) child
re stra int sy stem on there ar seat Installing
theLA TC H-type (ISOFIX) child
re stra int sy stem on there ar seat &
WARNING Risk of inju ryor death if the
permissible gross mass of thech ild and
ch ild restra int sy stem is exceeded
Fo rLA TC H-type (ISOFIX) child restra int sys‐
te ms in which thech ild is secured using the
integrated seat belt in thech ild restra int sys‐
te m, the permissible gross mass of thech ild
and child restra int sy stem is 73lb (33 kg).
If th ech ild and thech ild restra int sy stem
to ge ther we igh more than 73 lb (33 kg),the
LA TC H-type (ISOFIX) child restra int sy stem
with integrated seat belt does not of fer suf fi‐
cient pr otection. An excessive load may be
placed on theLA TC H-type (ISOFIX) child seat
attachments and thech ild may not be 52
Occupant saf ety
Page 55 of 518

re
stra ined in theeve nt of an accident, for
ex ample. #
Ifth ech ild and thech ild restra int sys‐
te m toget her weigh more than 73 lb
(33 kg), use only a LATC H-type (ISOFIX)
ch ild restra int sy stem that secures the
ch ild with theve hicle seat belt. #
Also secure thech ild restra int sy stem
with theTo pTe ther belt, if available. Alw
ays comply with the information about the
mass of thech ild restra int sy stem:
R inthe manufacturer's ins tallation and operat‐
ing instructions forth ech ild restra int sy stem
used
R on a label on thech ild restra int sy stem, if
present
Re gular lych eck that the permissible gross mass
of thech ild and child restra int sy stem is still
complied with. When
you are ins talling a child restra int sy stem,
obser vethefo llowing:
0073 Alw
ays obser vethe cor rect use and the suit‐
ability of the seats for attaching a child
re stra int sy stem.
LA TC H-type (ISOFIX) child seat securing
sy stem
0073 Alw
ays comply with the manufacturer's
ins tallation and operating instructions for
th ech ild restra int sy stem used.
0073 Make sure
that thech ild's feet do not touch
th e front seat. If necessar y,mo vethe front
seat forw ard slightl y. When
you are ins talling a LATC H-type
(ISOFIX) child restra int sy stem, obser vethefo l‐
lowing:
0073 When
you are using a Group 0/0+ baby
car seat and a Group 1 rear wa rd-facing
ch ild restra int sy stem on a rear seat:
adju stthe front seat so that the seat does
not touch thech ild restra int sy stem. 0073
When
you are using a Group 1 forw ard-
fa cing child restra int sy stem: the back‐
re st of thech ild restra int sy stem must, as
fa r as possible, lie flat against the backrest
of theve hicle seat.
0073 Fo
r cer tain child restra int sy stems in weight
group 2 or 3, there may be restrictions in
th e maximum size setting, e.g. due topossi‐
ble con tact wi th thero of.
0073 The
child restra int sy stem must not be ten‐
sioned between thero of and the seat cush‐
ion and/or be ins talled facing the wrong
direction. Where possible, adjust the seat
cushion inclination accordingly.
0073 The
child restra int sy stem must not be put
under stra in by the head restra ints. Adjust
th e head restra ints according ly. Occupant saf
ety53
Page 56 of 518

Before
every trip, make sure that theLA TC H-type
(ISOFIX) child restra int sy stem is engaged cor‐
re ctly in bo thLATC H-type (ISOFIX) mounting
brac kets. #
Fold uphols tere d lining 1upwards. #
Turn the support on there ar side of uphol‐
st ered lining 1by90°.
Up hols tere d lining 1will remain folded
upwards. #
Attach theLA TC H-type (ISOFIX) child
re stra int sy stem toboth mounting brac kets
2 intheve hicle. Securing
thech ild restra int sy stem with the
seat belt Securing
thech ild restra int sy stem with the
seat belt on there ar seat
When ins talling a belt-secured child restra int
sy stem, obser vethefo llowing:
0073 Alw
ays comply with the manufacturer's
ins tallation and operating instructions for
th ech ild restra int sy stem used.
0073 When using a category 0/0+ baby car
seat and a category I
rear wa rd-facing
ch ild restra int sy stem on a rear seat:
adju stthe front seat so that the seat does
not touch thech ild restra int sy stem.
0073 The backrest of
thefo rw ard-facing child
re stra int sy stem must, as far as possible, be
re sting on the seat backrest of there ar
seat. 0073
Fo
r cer tain child restra int sy stems in weight
category II or III, there may be restrictions in
th e maximum size setting, e.g. due topossi‐
ble con tact wi th thero of.
0073 The
child restra int sy stem must not be put
under stra in between thero of and the seat
cushion and/or be ins talled facing the
wrong direction. Where possible, adjust the
seat cushion inclination accordingly.
0073 The
child restra int sy stem must not be put
under stra in by the head restra ints. Adjust
th e head restra ints according ly.
0073 Make sure
that thech ild's feet do not touch
th e front seat. If necessar y,mo vethe front
seat forw ard slightl y.
% Before opening or closing the soft top, child
re stra int sy stems in weight categories II or III
must be remo ved or the head restra ints of
th ech ild restra int sy stems must be mo ved
to the lo west position. In this case, let the
ch ild get out be fore opening or closing the
soft top. 54
Occupant saf ety