Page 89 of 282

00 SIENNA(U)
83
7. Sit the child on the child seat. Place
a shoulder belt over each shoulder.
Insert the tabs into the buckle.
CAUTION
When the built−in child restraint is
in use, do not use the adult lap and
shoulder belt instead of the built−in
child restraint seat belt as it can
cause severe injury to the child in
a sudden stop or crash.
After inserting the tabs, make sure
the tabs and buckle are locked and
that the shoulder belts and buckle
strap are not twisted.
Do not insert coins, clips, etc. in
the buckle as this may prevent you
from properly latching the tabs and
buckle.
If the seat belt does not function
normally, it cannot protect your
child from injury. Contact your
Toyota dealer immediately. Do not
use the built−in child restraint until
the seat belt is fixed.
8. Fasten the shoulder belt clip.
The purpose of the clip is to keep the
shoulder belts positioned correctly on the
shoulders.
CAUTION
An unfastened shoulder belt clip will
not keep the belts on the child’s
shoulders. In a sudden stop or crash,
the child may go too far forward and
be seriously injured. Make sure the
belt clip is fastened at all times.
ProCarManuals.com
Page 90 of 282

00 SIENNA(U)
84
9. Lift the seat belt adjusting lever to
allow the belts to retract until the
shoulder belts are snugly adjusted
around the child’s shoulders.
You should not be able to put more than
two fingers between a shoulder belt and
the child’s chest.
After adjusting the shoulder belt tightness
by lifting the seat belt adjusting lever,
move the shoulder belt clip 5 to 8 cm (2
to 3 in.) below the child’s chin. On each
belt, the shoulder part should be centered
on the child’s shoulder. The belts should
be away from the child’s face and neck,
but not falling off the child’s shoulders.10. To release the child from the seat
belts, separate the shoulder belts,
then press the buckle release button.
Move both belts off the child’s shoulders.11. To store the built−in child restraint,
fasten the shoulder belt clip and re-
turn the seat belt buckle. Raise the
child seat cushion.
CAUTION
Before using the vehicle’s seat belt,
make sure the head restraint is prop-
erly adjusted.
ProCarManuals.com
Page 91 of 282
00 SIENNA(U)
85
Child restraint systems are classified into
the following 3 types depending on the
child’s age and size.
(A) Infant seat
(B) Convertible seat
(C) Booster seat
Install the child restraint system following
the instructions provided by its manufac-
turer.
(A) Infant seat
(B) Convertible seat
(C) Booster seat
—Types of child restraint
system
ProCarManuals.com
Page 92 of 282
00 SIENNA(U)
86
(A) INFANT SEAT INSTALLATION
An infant seat is used in rear−facing
position only.CAUTION
Do not put a rear−facing child re-
straint system on the third seat if it
interferes with the lock mechanism of
the second seats. This can cause se-
vere injury to the child and front pas-
senger in case of sudden braking or
a collision.
1. Run the center lap belt through or
around the infant seat following the in-
structions provided by its manufacturer
and insert the tab into the buckle tak-
ing care not to twist the belt.
—Installation with 2−point
type seat belt
ProCarManuals.com
Page 93 of 282
00 SIENNA(U)
87
CAUTION
After inserting the tab, make sure
the tab and buckle are locked and
that the lap belt is not twisted.
Do not insert coins, clips, etc. in
the buckle as this may prevent you
from properly latching the tab and
buckle.
If the seat belt does not function
normally, it cannot protect your
child from injury. Contact your
Toyota dealer immediately. Do not
use the seat until the seat belt is
fixed.
2. While pressing the infant seat firmly
against the seat cushion and seatback,
tighten the lap belt by pulling its free
end to hold the infant seat securely.CAUTION
Push and pull the child restraint sys-
tem in different directions to be sure
it is secure. Follow all the installation
instructions provided by its manufac-
turer.
ProCarManuals.com
Page 94 of 282
00 SIENNA(U)
88
3. To remove the infant seat, press the
buckle−release button.(B) CONVERTIBLE SEAT INSTALLATION
A convertible seat is used in forward−
facing and rear−facing position depend-
ing on the child’s age and size. When
installing, follow the manufacturer’s in-
structions about the applicable child’s
age and size as well as directions for
installing a child restraint system.CAUTION
Do not put a rear−facing child re-
straint system on the third seat if it
interferes with the lock mechanism of
the second seats. This can cause se-
vere injury to the child and front pas-
senger in case of sudden braking or
a collision.
ProCarManuals.com
Page 95 of 282
00 SIENNA(U)
89
1. Run the center lap belt through or
around the convertible seat following
the instructions provided by its
manufacturer and insert the tab into
the buckle taking care not to twist the
lap belt.
CAUTION
After inserting the tab, make sure
the tab and buckle are locked and
that the lap belt is not twisted.
Do not insert coins, clips, etc. in
the buckle as this may prevent you
from properly latching the tab and
buckle.
If the seat belt does not function
normally, it cannot protect your
child from injury. Contact your
Toyota dealer immediately. Do not
use the seat until the seat belt is
fixed.
2. While pressing the convertible seat
firmly against the seat cushion and
seatback, tighten the lap belt by pulling
its free end to hold the convertible seat
securely.
ProCarManuals.com
Page 96 of 282
00 SIENNA(U)
90
CAUTION
Push and pull the child restraint sys-
tem in different directions to be sure
it is secure. Follow all the installation
instructions provided by its manufac-
turer.
3. To remove the convertible seat, press
the buckle−release button.(A) INFANT SEAT INSTALLATION
An infant seat is used in rear−facing
position only.
—Installation with 3−point
type seat belt
ProCarManuals.com