Page 77 of 272

name. SIENNA (45403U)
77
This child restraint is designed for use
only by children who weigh between 10
and 30 kg (22.1 and 66.1 lb.) and whose
height is between 85 and 127 cm (33.5
and 50.0 in.).
The child should be at least one year
old and must be capable of sitting up-
right alone and whose shoulder height
is at or below the maximum shoulder
height indicator. See indicator label be-
hind child seat pad.
It is important to use a rear−facing
child restraint until the child is about
a year old. A rear−facing restraint gives
the child’s head, neck and body the
support they would need in a crash.
See ”—Child restraint system” for more
information.
If your child’s shoulders are above the
indicator position, do not use the built−
in child restraint. Your child should use
the adult lap and shoulder belt.
According to accident statistics, children
are safer when properly restrained in the
rear seat than in the front seat.CAUTION
Make sure the child is securely re-
strained with the built−in child re-
straint. WARNING! Failure to follow
the manufacturer ’s instructions on the
use of this child restraint system can
result in your child striking the ve-
hicle’s interior during a sudden stop
or crash. Snugly adjust the belts pro-
vided with this child restraint around
your child.
When using the built−in child re-
straints, observe the following:
Use the belts of one child restraint
for only one child at a time. Do not
use the belts for two or more chil-
dren.
Be careful not to damage the belt
webbing or hardware. Take care that
they do not get caught or pinched
in the seatback.
Inspect the belt system periodically.
Check for cuts, fraying, and loose
parts. Damaged parts should be re-
placed. Do not disassemble or
modify the child restraint belt sys-
tem.
Keep the belts clean and dry. If
they need cleaning, use a mild soap
solution or lukewarm water. Never
use bleach, dye, or abrasive clean-
ers. They may severely weaken the
belts.
Replace the built−in child restraint
assembly if it has been used in a
severe impact. The entire assembly
should be replaced even if damage
is not obvious.
Do not use a separate child re-
straint system over the opened
built−in child restraint.
Do not use the adult lap and shoul-
der belt with the child restraint.
ProCarManuals.com
Page 78 of 272
name. SIENNA (45403U)
78
1. Bring the seat to the upright posi-
tion and raise the armrest. Move the
head restraint to the fully down and
fully backward position.
CAUTION
When using the built−in child re-
straint, the head restraint must be
fully lowered and pulled fully back-
ward.
2. Lower the child seat cushion.3. While lifting the seat belt adjustment
lever in the child seat back panel,
pull both shoulder belts together.
ProCarManuals.com
Page 79 of 272
name. SIENNA (45403U)
79
4. Compress the shoulder belt clip to
separate the right and left shoulder
belts.5. Pull down the seatback part of the
removable pad. Make sure the child’s
shoulders are at or below the maxi-
mum shoulder height indicator label.
The removable pad is attached by Velcros.
CAUTION
If your child’s shoulders are above
the maximum shoulder height indica-
tor label, do not use the built−in child
restraint. Your child should use the
adult lap and shoulder belts.
6. Press the removable pad against the
Velcros and install the pad to the
seatback. Make sure the belts go
through the slots in the pad.
CAUTION
If you have removed the removable
pad for cleaning etc., do not use the
built−in child restraint without the
pad.
ProCarManuals.com
Page 80 of 272

name. SIENNA (45403U)
80
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 81 of 272

name. SIENNA (45403U)
81
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 83 of 272
name. SIENNA (45403U)
83
(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
instructions provided by its manufactur-
er and insert the tab into the buckle
taking care not to twist the belt.
—Installation with 2−point
type seat belt
ProCarManuals.com
Page 84 of 272
name. SIENNA (45403U)
84
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 Toy-
ota 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 86 of 272
name. SIENNA (45403U)
86
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