Page 73 of 330

01 SIENNA_U (L/O0008)
692001 MY SIENNA (OM45406U)
—Rear center seat belt
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 fitTo 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 high−positioned and loose−fit-
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.
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01 SIENNA_U (L/O0008)
712001 MY SIENNA (OM45406U)
To connect the extender to the seat
belt, insert the tab into the seat belt
buckle so that the “PRESS” signs on
the buckle−release 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 buckle−release 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.
—Front seat belt pretensioners
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.
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01 SIENNA_U (L/O0008)
722001 MY SIENNA (OM45406U)
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 1−5.)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 smoke−like
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 any of
these may cause sudden operation of
the front seat belt pretensioners or
disable the system, which could re-
sult in death or serious personal inju-
ry.
Failure to follow these instructions
can result in death or serious inju-
ries.
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Page 93 of 330
01 SIENNA_U (L/O0008)
892001 MY SIENNA (OM45406U)
The built−in child restraint system mainly
consists of two child seats integrated in
the bench type second seat with 5−point
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
—Built−in child restraint (bench type second seat)
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01 SIENNA_U (L/O0008)
932001 MY SIENNA (OM45406U)
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 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 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.
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Page 100 of 330
01 SIENNA_U (L/O0008)
962001 MY SIENNA (OM45406U)
(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 mecha-
nism of the second seats. This can
cause severe injury to the child and
passengers sitting in second seats
in case of sudden braking or a col-
lision.
Fix both seats at
the same position.Fix both seat backs
at the same angle.
When installing a child restraint
system in the third seat center
position, adjust both seats to the
same position and seatbacks to the
same angle. Otherwise, the child re-
straint system can not be securely
restrained and this may cause seri-
ous injuries in a collision.
—Installation with 2−point
type seat belt
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Page 101 of 330
01 SIENNA_U (L/O0008)
972001 MY SIENNA (OM45406U)
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.
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.
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Page 103 of 330
01 SIENNA_U (L/O0008)
992001 MY SIENNA (OM45406U)
CAUTION
Do not put a rear−facing child re-
straint system on the third seat if
it interferes with the lock mecha-
nism of the second seats. This can
cause severe injury to the child and
passengers sitting in second seats
in case of sudden braking or a col-
lision.
Fix both
seats at
the same
position.Fix both seat
backs at the
same angle.
When installing a child restraint
system in the third seat center
position, adjust both seats to the
same position and seatbacks to the
same angle. Otherwise, the child re-
straint system can not be securely
restrained and this may cause seri-
ous injuries in a collision.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.
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