2003 TOYOTA SIENNA lock

03 SIENNA_U (L/O 0207)
672003 MY SIENNA (OM45410U)
If the seat belt cannot be pulled out of the
retractor, firmly pull the belt and release
it. You will then be able to smoothly pull
the belt out of the retractor.
When a passenger ’s shoulder belt is com-
pletely extended and is then retracted
even slightly, the belt is locked in that
position and cannot be extended. This fea-
ture is used to hold the child restraint
system securely. (For details, see “Child
restraint” in this section.) To free the belt
again, fully retract the belt and then pull
the belt out once more.
CAUTION
After inserting the tab, make sure
the tab and buckle are locked and
that the 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, immediately contact your
Toyota dealer. Do not use the seat
until the seat belt is fixed. It cannot
protect an adult occupant or your
child from injury.
Seat belts with an adjustable shoulder
anchor—
Adjust the shoulder anchor position to
your size.
To raise: Slide the anchor up.
To lower: Push in the lock release button
and slide the anchor down.
After adjustment make sure the anchor is
locked in position.
CAUTION
Always make sure the shoulder belt
is positioned across the center of
your shoulder. The belt should be
kept away from your neck, but not
falling off your shoulder. Failure to
do so could reduce the amount of
protection in an accident and cause
serious injuries in a collision.

03 SIENNA_U (L/O 0207)
712003 MY SIENNA (OM45410U)
Lengthen
Sit up straight and well back in the
seat. To fasten your belt, insert the tab
into the buckle.
You will hear a click when the tab locks
into the buckle.
If the belt is not long enough for you, hold
the tab at a right angle to the belt and
pull on the tab.
CAUTION
After inserting the tab, make sure
the tab and buckle are locked and
that the 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, immediately contact your
Toyota dealer. Do not use the seat
until the seat belt is fixed. It cannot
protect an adult occupant or your
child from injury.
Keep as low on hips as possibleAdjust to a
snug fit To o h i g h
Remove excess length of the belt and
adjust the belt position.
To shorten the belt, pull the free end of
the belt.
Position the lap belt as low as possible
on your hips—not on your waist, then ad-
just it to a snug fit.
CAUTION
Both highpositioned and loosefit-
ting lap belts could cause serious in-
juries due to sliding under the lap
belt during a collision or other unin-
tended result. Keep the lap belt posi-
tioned as low on hips as possible.
—Rear center seat belt

03 SIENNA_U (L/O 0207)
732003 MY SIENNA (OM45410U)
To connect the extender to the seat
belt, insert the tab into the seat belt
buckle so that the “PRESS” signs on
the bucklerelease buttons of the ex-
tender and the seat belt are both facing
outward as shown.
You will hear a click when the tab locks
into the buckle.
When releasing the seat belt, press on
the bucklerelease button on the extender,
not on the seat belt. This helps prevent
damage to the vehicle interior and extend-
er itself.
When not in use, remove the extender
and store in the vehicle for future use.
CAUTION
After inserting the tab, make sure
the tab and buckle are locked and
that the seat belt extender 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, immediately contact your
Toyota dealer. Do not use the seat
until the seat belt is fixed. It cannot
protect an adult occupant or your
child from injury.
The driver and front passenger ’s seat
belt pretensioners are designed to be
activated in response to a severe fron-
tal impact.
When the airbag sensor detects the shock
of a severe frontal impact, the front seat
belts are quickly drawn back in by the
retractors so that the belts snugly restrain
the front seat occupants.
The front seat belt pretensioners are acti-
vated even with no passenger in the front
seat.
Collisions occurring at certain speeds and
angles may cause the seat belt preten-
sioners and SRS airbags not to operate
all together.
—Front seat belt
pretensioners

03 SIENNA_U (L/O 0207)
742003 MY SIENNA (OM45410U)
This indicator comes on when the igni-
tion key is turned to the “ACC” or
“ON” position. It goes off after about
6 seconds. This means the front seat
belt pretensioners are operating proper-
ly.
This warning light system monitors the
airbag sensor assembly, front airbag sen-
sors, side airbag sensors, front seat belt
pretensioner assemblies, inflators, warning
light, interconnecting wiring and power
sources. (For details, see “Service remain-
der indicators and warning buzzers” in
Section 15.)The front seat belt pretensioner system
mainly consists of the following compo-
nents and their locations are shown in the
illustration.1. Front airbag sensors
2. SRS warning light
3. Front seat belt pretensioner assemblies
4. Airbag sensor assembly
The front seat belt pretensioners are con-
trolled by the airbag sensor assembly. The
airbag sensor assembly consists of a saf-
ing sensor and airbag sensor. When the front seat belt pretensioners are
activated, an operating noise may be
heard and a small amount of smokelike
gas may be released. This gas is harm-
less and does not indicate that a fire is
occurring.
Once the front seat belt pretensioners
have been activated, the seat belt retrac-
tors remain locked.
CAUTION
Do not modify, remove, strike or open
the front seat belt pretensioner as-
semblies, airbag sensor or surround-
ing area or wiring. Doing so may
cause sudden operation of the front
seat belt pretensioners or disable the
system, which could result in death
or serious personal injury.
Failure to follow these instructions
can result in death or serious inju-
ries. Consult your Toyota dealer
about any repairs and modifications.

03 SIENNA_U (L/O 0207)
912003 MY SIENNA (OM45410U)
The builtin child restraint system mainly
consists of two child seats integrated in
the bench type second seat with 5point
seat belts. Refer to the illustration to be-
come familiar with the parts of the sys-
tem. This child restraint system conforms
to U.S. Federal Motor Vehicle Safety Stan-
dard No.213 and Canada Motor Vehicle
Safety Standard No.213.4.1. Head restraint
2. Head restraint lock release button
3. Shoulder belts
4. Maximum shoulder height indicator label
5. Removable pad
6. Seat belt buckle
7. Child seat cushion
8. Seat belt buckle release button
9. Seat belt tabs
10. Owner ’s manual supplement 11. Seat belt adjustment lever
12. Shoulder belt clip
—Builtin child restraint (bench type second seat)

03 SIENNA_U (L/O 0207)
952003 MY SIENNA (OM45410U)
7. Sit the child on the child seat. Placea shoulder belt over each shoulder.
Insert the tabs into the buckle.
CAUTION
When the builtin child restraint is
in use, do not use the adult lap and
shoulder belt instead of the builtin
child restraint seat belt as it can
cause death or 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 builtin 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.

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.