Page 65 of 668
651-1. For safe use
SIENNA_OM_OM08013U_(U)
1
For safety and security
Ty p e A
Latch the hooks of the lower
straps onto the LATCH
anchors. If the child restraint
has a top tether strap, the top
tether strap should be latched
onto the top tether strap anchor.
For owners in Canada:
The symbol on a child restraint
system indicates the presence
of a lower connector system.
Ty p e B
Latch the buckles onto the
LATCH anchors. If the child
restraint has a top tether strap,
the top tether strap should be
latched onto the top tether strap
anchor.
For owners in Canada:
The symbol on a child restraint
system indicates the presence
of a lower connector system.
Canada only
3
Canada only
P
Page 66 of 668
661-1. For safe use
SIENNA_OM_OM08013U_(U)■
Rear facing
Infant seat/convertible seat
Place the child restraint sys-
tem on the rear seat facing
the rear of the vehicle.
Run the seat belt through the
child restraint system and
insert the plate into the
buckle. Make sure that the
belt is not twisted.
Fully extend the shoulder belt
and allow it to retract to put it
in lock mode. In lock mode,
the belt cannot be extended.
While pushing the child
restraint system down 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 point where there
is no slack in the belt, pull the
belt to check that it cannot be
extended.
Installing child restraints using a seat belt (child restraint lock
function belt)
1
2
3
4
Page 67 of 668
671-1. For safe use
SIENNA_OM_OM08013U_(U)
1
For safety and security
■Forward facing Convertible seat
Place the child restraint sys-
tem on the seat facing the
front of the vehicle.
Run the seat belt through the
child restraint system and
insert the plate into the
buckle. Make sure that the
belt is not twisted.
Fully extend the shoulder belt
and allow it to retract to put it
in lock mode. In lock mode,
the belt cannot be extended.
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 point where there
is no slack in the belt, pull the
belt to check that it cannot be
extended.
If the child restraint has a top tether strap, the top tether strap
should be latched onto the top tether strap anchor. ( P. 69, 70)
1
2
3
4
5
Page 68 of 668
681-1. For safe use
SIENNA_OM_OM08013U_(U)■
Booster seat
Place the child restraint sys-
tem on the seat facing the
front of the vehicle.
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 shoulder belt is correctly positioned over the child’s
shoulder and that the lap belt is as low as possible. ( P. 28)
Push the buckle release button
and fully retract the seat belt.
1
2
Removing a child restraint installed with a seat belt
Page 69 of 668
691-1. For safe use
SIENNA_OM_OM08013U_(U)
1
For safety and security
Secure the child restraint sys-
tem using the seat belt or
LATCH anchors, and adjust the
head restraint to the uppermost
position.
*: Ottoman seat only
Latch the hook onto the anchor
bracket and tighten the top
tether strap.
Make sure the top tether strap is
securely latched.
Adjust the head restraint to the
downmost lock position.
Child restraint systems with a top tether strap (second seat)
*1
2
3
Page 70 of 668
701-1. For safe use
SIENNA_OM_OM08013U_(U)■
Center seat
Secure the child restraint
system using the seat belt or
LATCH anchors. Adjust the
head restraint to the upper-
most position.
Latch the hook onto the
anchor bracket and tighten
the top tether strap.
Make sure the top tether strap is
securely latched.
Adjust the head restraint to
the downmost position.
■Right outboard seat
Latch the hook onto the anchor
bracket and tighten the top
tether strap.
Make sure the top tether strap is
securely latched.
Pull the head restraint up to use.
Child restraint systems with a top tether strap (third seat)
1
2
3
Page 71 of 668

711-1. For safe use
SIENNA_OM_OM08013U_(U)
1
For safety and security
■Laws and regulations pertaining to anchorages
The LATCH system conforms to FMVSS225 or CMVSS210.2.
Child restraint systems conforming to FMVSS213 or CMVSS213 specifica-
tions can be used.
This vehicle is designed to conform to the SAE J1819.
WARNING
■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. 32)
■ When installing a child restraint system
Follow the directions given in the child restraint system installation manual
and fix the child restraint system securely in place.
If the child restraint system is not correctly fixed in place, the child or other
passengers may be seriously injured or even killed in the event of sudden
braking, sudden swerving or an accident.
●If the driver’s seat interferes with the
child restraint system and prevents it
from being attached correctly, attach the
child restraint system to the right-hand
rear seat.
● Adjust the front passenger seat or sec-
ond seats so that it does not interfere
with the child restraint system.
● Only put a forward-facing child restraint
system on the front seat when unavoid-
able. When installing a forward-facing
child restraint system on the front pas-
senger seat, move the seat as far back
as possible even if the “AIR BAG OFF”
indicator light is illuminated. Failure to
do so may result in death or serious
injury if the airbags deploy (inflate).
Page 72 of 668

721-1. For safe use
SIENNA_OM_OM08013U_(U)
WARNING
■When installing a child restraint system
●When installing a child restraint system on the third center 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 using the LATCH anchors for a child restraint system, move the seat
as far back as possible (second seat only), with the seatback close to the
child restraint system.
● 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. Failing to do so may result in death or serious injury in the event
of sudden braking, sudden swerving or an accident.
● 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.
● Follow all installation instructions provided by the child restraint system
manufacturer.
● When securing some types of child restraint systems in second (8-passen-
ger models) or third row 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 effectiveness. Be sure your seat belt fits snugly across
your shoulder and low on your hips. if it dose not, or if it interferes with the
child restraint, move to a different position. Failure to do so may result in
death or serious injury.