2003 TOYOTA SIENNA ECU

03 SIENNA_U (L/O 0207)
692003 MY SIENNA (OM45410U)
RIGHT SIDE SEAT BELT FOR SECOND
BENCH SEAT
The second right side seat belt is a
3point type restraint with 2 buckles. Both
seat belt buckles must be correctly lo-
cated and securely latched for proper op-
eration.
Make sure the buckle 1 is securely
latched for ready use of the second right
side seat belt.Two buckles and tabs for second right
side seat belt
The 2 tabs have different shape for its
end so that the belt is not buckled in the
wrong place.Buckle 1—Properly matches with con-
cave end tab
Buckle 2—Properly matches with round
end tab
CAUTION
Make sure the both buckles are cor-
rectly located and securely latched.
Failure to properly match the buckle
and tab may cause serious injury in
case of an accident or a co llision.

03 SIENNA_U (L/O 0207)
792003 MY SIENNA (OM45410U)
A crash severe enough to inflate the air-
bags may break the windshield as the
vehicle buckles. In vehicles with a pas-
senger airbag the windshield may also be
damaged by absorbing some of the force
of the inflating airbag.CAUTION
The SRS airbag system is designed
only as a supplement to the prima-
ry protection of the driver side and
front passenger side seat belt sys-
tems. The front seat occupants can
be killed or seriously injured by the
inflating airbags if they do not wear
the available seat belts properly.
During sudden braking just before
a collision, an unrestrained driver
or front passenger can move for-
ward into direct contact with or
close proximity to the airbag which
may then deploy during the colli-
sion. To ensure maximum protection
in an accident, the driver and all
passengers in the vehicle must
wear their seat belts properly. Wear-
ing a seat belt properly during an
accident reduces the chances of
death or serious injury or being
thrown out of the vehicle. For
instructions and precautions con-
cerning the seat belt system, see
“Seat belts” in this section.
Improperly seated and/or restrained
infants and children can be killed
or seriously injured by the deploy-
ing front airbags. An infant or child
who is too small to use a seat belt
should be properly secured using a
child restraint system. Toyota
strongly recommends that all in-
fants and children be placed in the
rear seat of the vehicle and proper-
ly restrained. The rear seat is the
safest for infants and children. For
instructions concerning the installa-
tion of a child restraint system, see
“Child restraint” in this section.

03 SIENNA_U (L/O 0207)
862003 MY SIENNA (OM45410U)
CAUTION
The SRS side airbag system is de-
signed only as a supplement to the
primary protection of the driver
side and front passenger side seat
belt systems. To ensure maximum
protection in an accident, the driver
and all passengers in the vehicle
must wear their seat belts properly.
Wearing a seat belt properly during
an accident reduces the chances of
death or serious injury or being
thrown out of the vehicle. For
instructions and precautions con-
cerning the seat belt system, see
“Seat belts” in this section.
Improperly seated and/or restrained
infants and children can be killed
or seriously injured by the deploy-
ing airbags. An infant or child who
is too small to use a seat belt
should be properly secured using a
child restraint system. Toyota
strongly recommends that all in-
fants and children be placed in the
rear seat of the vehicle and proper-
ly restrained. The rear seat is the
safest for infants and children. For
instructions concerning the installa-
tion of a child restraint system, see
“Child restraint” in this section.
Do not allow a child to lean his/her
head or any part of his/her body
against the front door or the area
of the seat from which the side air-
bag deploys even if he/she is
seated in the child restraint system.
It is dangerous if the side airbag
inflates, and the impact could cause
death or serious injury to the child.
For instructions concerning the
installation of a child restraint sys-
tem, see “Child restraint” in this
section.
Do not lean against the front door
when the vehicle is in use, since
the side airbag inflates with consid-
erable speed and force. Otherwise,
you may be killed or be seriously
injured. Special care should be tak-
en especially when you have a
small child in the vehicle.
Sit up straight and well back in the
seat, distributing your weight evenly
in the seat. Do not apply excessive
weight to the outer side of the front
seats on vehicles with side airbags.

03 SIENNA_U (L/O 0207)
892003 MY SIENNA (OM45410U)
Toyota strongly urges the use of child
restraint systems for children small
enough to use them.
The laws of all 50 states in the U.S.A.
and Canada now require the use of a
child restraint system.
Your vehicle conforms to SAE J1819.
If a child is too large for a child restraint
system, the child should sit in the rear
seat and must be restrained using the
vehicle’s seat belt. See “Seat belts” for
details.CAUTION
For effective protection in automo-
bile accidents and sudden stops, a
child must be properly restrained,
using a seat belt or child restraint
system depending on the age and
size of the child. Holding a child in
your arms is not a substitute for a
child restraint system. In an acci-
dent, the child can be crushed
against the windshield, or between
you and the vehicle’s interior.
Toyota strongly urges use of a
proper child restraint system which
conforms to the size of the child,
installed on the rear seat. Accord-
ing to accident statistics, the child
is safer when properly restrained in
the rear seat than in the front seat.
Never install a rearfacing child re-
straint system on the front seat. In
the event of an accident, the force
of the rapid inflation of the airbag
can cause death or serious injury if
a rearfacing child restraint system
is installed on the front seat.
Unless it is unavoidable, do not
install a child restraint system on
the front seat.
A forwardfacing child restraint sys-
tem should be allowed to be
installed on the front passenger
seat only when it is unavoidable.
Always move the seat as far back
as possible, because the force of
the deploying front passenger air-
bag could cause death or serious
injury to the child.
On vehicles with side airbags, do
not allow the child to lean against
the front door or around the front
door even if the child is seated in
the child restraint system. It is dan-
gerous if the side airbags inflate,
because the impact could cause
death or serious injury to the child.
Make sure that you have complied
with all installation instructions pro-
vided by the child restraint
manufacturer and that the system is
properly secured.
Child restraint—
—Child restraint precautions

03 SIENNA_U (L/O 0207)
902003 MY SIENNA (OM45410U)
A child restraint system for a small
child or baby must itself be properly
restrained on the seat with either the
lap belt or the lap portion of the lap/
shoulder belt. You must carefully con-
sult the manufacturer ’s instructions
which accompany the child restraint
system.
To provide proper restraint, use a child
restraint system following the manufactur-
er ’s instructions about the appropriate age
and size of the child for the child restraint
system.
Install the child restraint system correctly
following the instructions provided by its
manufacturer of the system. General di-
rections are also provided under the fol-
lowing illustrations.
The child restraint system should be
installed on the rear seat if your vehicle
is equipped with rear seats. According to
accident statistics, the child is safer when
properly restrained in the rear seat than
in the front seat.CAUTION
Never install a rearfacing child re-
straint system on the front seat. In
the event of an accident, the force
of the rapid inflation of the airbag
can cause death or serious injury if
a rearfacing child restraint system
is installed on the front seat.
Unless it is unavoidable, do not
install a child restraint system on
the front seat.
A forwardfacing child restraint sys-
tem should be allowed to be
installed on the front passenger
seat only when it is unavoidable.
Always move the seat as far back
as possible, because the force of
the deploying front passenger air-
bag could cause death or serious
injury to the child.
On vehicles with side airbags, do
not allow the child to lean against
the front door or around the front
door even if the child is seated in
the child restraint system. It is dan-
gerous if the side airbags inflate,
because the impact could cause
death or serious injury to the child.
After installing the child restraint
system, make sure it is secured in
place following the manufacturer ’s
instructions. If it is not restrained
securely, it may cause death or se-
rious injury to the child in the
event of a sudden stop or accident.
When not using the child restraint system,
keep it secured with the seat belt or place
it somewhere other than the passenger
compartment. This will prevent it from in-
juring passengers in the event of a sud-
den stop or accident.
—Child restraint system

03 SIENNA_U (L/O 0207)
922003 MY SIENNA (OM45410U)
This child restraint is designed for use
only by children who weigh between 10
and 18 kg (22.1 and 39.5 lb.) and whose
height is between 85 and 101 cm (33.5
and 40.0 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 rearfacing
child restraint until the child is about
a year old. A rearfacing 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 builtin 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 builtin 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 builtin 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
builtin child restraint.
Do not use the adult lap and shoul-
der belt with the child restraint.

03 SIENNA_U (L/O 0207)
982003 MY SIENNA (OM45410U)
(A) INFANT SEAT INSTALLATION
An infant seat is used in rearfacing
position only.CAUTION
Do not install a child restraint sys-
tem on the third seat if it interferes
with the lock mechanism of the sec-
ond seats. This can cause death or
serious injury to the child and pas-
sengers sitting in second seats in
case of sudden braking or a colli-
sion.
Same position Same angle
When installing a child restraint
system in the third seat center
position, adjust both seat cushions
to the same position and align both
seatbacks at the same angle. Other-
wise, the child restraint system can-
not be securely restrained and this
may cause death or serious injuries
in a collision.
—Installation with 2point type
seat belt

03 SIENNA_U (L/O 0207)
992003 MY SIENNA (OM45410U)
1. Run the center lap belt through oraround 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.
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 child restraint system until
the seat belt is fixed.
2. While pressing the infant seat firmlyagainst the seat cushion and seatback,
tighten the lap belt by pulling its free
end to hold the infant seat securely.