2021 TOYOTA SIENNA HYBRID Owners Manual (in English)

651-2. Child safety
1
For safety and security
remove the head restraint.
(P.183)
3 Place the child restraint sys-
tem on the seat facing the
front of the vehicle.
4 Run the seat belt through the
child restraint system and
insert the plate into the
buckle. Make sure that the
belt is not twisted.
5 Fully extend the shoulder belt
and allow it to retract to put it in lock mode. In lock mode,
the belt cannot be extended.
6 While pushing the child
restraint system into the rear
seat, allow the shoulder belt
to retract until the child
restraint system is securely in
place.
After the shoulder belt has
retracted to a poi nt where there is
no slack in the belt, pull the belt to
check that it cannot be extended.
7 If the child restraint has a top
tether strap, follow the child
restraint manufacturer’s
operation manual regarding
the installation, using the top
tether strap to latch onto the
top tether strap anchor.
( P.71)
8 After installing the child
restraint system, rock it back

661-2. Child safety
and forth to ensure that it is
installed securely. (P.67)
■Booster seat
1 If installing the child restraint
system to the front passen-
ger seat is unavoidable, refer
to P.61for front passenger
seat adjustment.
2 High back type: If the head
restraint interferes with your
child restraint system, and
the head restraint can be
removed, remove the head
restraint. Otherwise, put the
head restraint in the upper
most position. ( P.182)
3 Place the child restraint sys-
tem on the seat facing the
front of the vehicle.
Booster type
High back type 4
Sit the child in the child
restraint system. Fit the seat
belt to the child restraint sys-
tem according to the manu-
facturer’s instructions and
insert the plate into the
buckle. Make sure that the
belt is not twisted.
Check that the sh oulder belt is cor-
rectly positioned over the child’s
shoulder and that the lap belt is as
low as possible. ( P.35)
■Removing a child restraint
system installed with a seat
belt
Press the buckle release button
and fully retract the seat belt.
When releasing the buckle, the
child restraint system may spring
up due to the rebo und of the seat
cushion. Release the buckle while
holding down the child restraint
system.
Since the seat belt automatically
reels itself, slowly return it to the
stowing position.

671-2. Child safety
1
For safety and security
WARNING
■When installing a child
restraint system
Observe the following precau-
tions.
Failure to do so m ay result in
death or serious injury.
●Do not allow children to play
with the seat belt. If the seat belt
becomes twisted around a
child’s neck, it may lead to
choking or other serious injuries
that could result in death.
If this occurs and the buckle
cannot be unfastened, scissors
should be used to cut the belt.
●Ensure that the belt and plate
are securely locked and the
seat belt is not twisted.
●Shake the child restraint system
left and right, and forward and
backward to ensure that it has
been securely installed.
●After securing a child restraint
system, never adjust the seat.
●When a booster seat is
installed, always ensure that the
shoulder belt is positioned
across the center of the child’s
shoulder. The belt should be
kept away from the child’s neck,
but not so that it could fall off the
child’s shoulder.
●Follow all installation instruc-
tions provided by the child
restraint system manufacturer.
●When securing some types of
child restraint systems in rear
seats, it may not be possible to
properly use the seat belts in
positions next to the child
restraint without interfering with
it or affecting s eat belt effective-
ness. Be sure your seat belt fits
snugly across your shoulder
and low on your hips. If it does
not, or if it interferes with the
child restraint, move to a differ-
ent position. Fa ilure to do so
may result in death or serious
injury.
●When installing a child restraint
system in the ce nter rear seat,
adjust both seatbacks at the
same angle. Otherwise, the
child restraint system cannot be
securely restrained and this
may cause death or serious
injuries in the event of sudden
braking, sudden swerving or an
accident.
■When installing a booster
seat
To prevent the belt from going
into ALR lock mode, do not fully
extend the shoulder belt. ALR
mode causes the belt to tighten
only. This could cause injury or
discomfort to the child. ( P.39)
■Do not use a seat belt
extender
If a seat belt extender is used
when installing a child restraint
system, the seat belt will not
securely hold the child restraint
system, which could cause death
or serious injury to the child or
other passengers in the event of
sudden braking, sudden swerv-
ing or an accident.

681-2. Child safety
■Child restraint LATCH
anchors
LATCH anchors are provided for
the rear seats.
Second seats (8-passenger
models)
Second seats (7-passenger
models)
Third seats
■When installing in the sec-
ond seats and third seats
Install the child restraint system
in accordance to the operation
manual enclosed with the child
restraint system.
Second seats
1 Fold the seatback while pull-
ing the lever. Return the
seatback and secure it at the
1st lock position (most
upright position). Adjust the
seatback to the 6th lock posi-
tion.
If there is a gap between the child
restraint system and the seatback,
adjust the seatback angle until
good contact is achieved.
1st lock position
6th lock position
Third seats
1 Fold the seatback while pull-
ing the strap. Return the
seatback and secure it at the
1st lock position (most
upright position). Adjust the
seatback to the 11th lock
position.
If there is a gap between the child
restraint system and the seatback,
Child restraint system
fixed with a child restraint
LATCH anchor
A
B

691-2. Child safety
1
For safety and security
adjust the seatback angle until
good contact is achieved.
1st lock position
11th lock position
2 If the head restraint interferes
with the child restraint system
installation and the head
restraint can be removed,
remove the head restraint.
Otherwise, put the head
restraint in the upper most
position. ( P.182)
With flexible lower attach-
ments
3 Latch the hooks of the lower
attachments onto the LATCH
anchors.
For owners in Canada:
The symbol on a child
restraint system indicates the presence of a lower con-
nector system.
With rigid lower attachments
3 Latch the buckles onto the
LATCH anchors.
For owners in Canada:
The symbol on a child
restraint system indicates
A
B
A
A

701-2. Child safety
the presence of a lower con-
nector system.
4 If the child restraint has a top
tether strap, follow the child
restraint manufacturer’s
operation manual regarding
the installation, using the top
tether strap to latch onto the
top tether strap anchor.
( P.71)
5 After installing the child
restraint system, rock it back
and forth to ensure that it is
installed securely. ( P.67)
■When installing a child restraint
system in the third seats
Use outboard seats LATCH anchors
and or and . can
be used with when installing in
the third center seat. Do not use
LATCH anchors , and
simultaneously.
■Laws and regulations pertain-
ing to anchors
The LATCH system conforms to
FMVSS225 or CMVSS210.2.
Child restraint systems conforming
to FMVSS213 or CMVSS213 speci-
fications can be used.
This vehicle is designed to conform
to SAE J1819.
ABDEC
D
CDE
WARNING
■When installing a child
restraint system
Observe the following precau-
tions.
Failure to do so may result in
death or serious injury.
●When using the LATCH
anchors, be sure that there are
no foreign objects around the
anchors and that the seat belt is
not caught behind the child
restraint system.
●Follow all installation instruc-
tions provided by the child
restraint system manufacturer.
●Never attach two c hild restraint
system attachments to the
same anchor. In a collision, one
anchor may not be strong
enough to hold two child
restraint system attachments
and may break.
If the LATCH anchors are
already in use, use the seat belt
to install a child restraint sys-
tem.

711-2. Child safety
1
For safety and security
■Anchor brackets (for top
tether strap)
Use anchor brackets when fix-
ing the top tether strap. Anchor brackets are provided
for the following seats:
Second seats (8-passenger
models)
Anchor brackets
Top tether strap
Second seats (7-passenger
models)Anchor bracket
Top tether strap
Third seats
WARNING
●Third seats: Never attach two
child restraint systems to the
center seat and left-hand side
outboard seat at the same time.
Child restraint systems may
interfere with each other and
may not be possible to properly
install the child restraint sys-
tems in positions.
●8-passenger models: Never
attach child restraint system to
the second center seat strikers,
which are exposed when sec-
ond center seat is removed.
When attaching child restraint
system to the second center
seat, ensure the second center
seat is securely installed and
attach child restraint system to
the LATCH anchors of the seat.
●When securing some types of
child restraint s ystems in rear
seats, it may not be possible to
properly use the seat belts in
positions next to the child
restraint without interfering with
it or affecting seat belt effective-
ness. Be sure your seat belt fits
snugly across your shoulder
and low on your hips. If it does
not, or if it interferes with the
child restraint, move to a differ-
ent position. Failure to do so
may result in death or serious
injury.
●If the seat is adjusted, reconfirm
the security of the child restraint
system.
Using an anchor bracket
(for top tether strap)
A
B
A
B

721-2. Child safety
Anchor bracket
Top tether strap
■Fixing the top tether strap
to the anchor bracket (sec-
ond seats)
Install the child restraint system
in accordance to the operation
manual enclosed with the child
restraint system.
Outboard seats
1 If the head restraint interferes
with your child restraint sys-
tem, and the head restraint
can be removed, remove the
head restraint. Otherwise,
put the head restraint in the
upper most position.
( P.182)
2 Latch the hook onto the
anchor bracket and tighten
the top tether strap.
Make sure the top tether strap is
securely latched. ( P.67)
When installing the child restraint
system with the head restraint
being raised, be sure to have the
top tether strap pass underneath
the head restraint for the single
tether strap. For V-shaped top
tether strap, the top tether strap can
pass on both sides of the head
restraint, without passing under- neath the head restraint.
Hook
Top tether strap
Center seat
1 If the head restraint interferes
with your child restraint sys-
tem, and the head restraint
can be removed, remove the
head restraint. Otherwise,
put the head restraint in the
upper most position.
( P.182)
2 Latch the hook onto the
anchor bracket and tighten
the top tether strap.
Make sure the top tether strap is
securely latched. ( P.67)
When installing the child restraint
system with the head restraint
being raised, be sure to have the
top tether strap pass underneath
the head restraint. Do not install
child restraints with V-shaped top
tether strap.
A
B
A
B