2004 Lexus IS300 Electrical Components / LEXUS 2004 IS300 OWNER'S MANUAL (OM53461U)

OCCUPANT RESTRAINT SYSTEMS
11 4
SV16016
To release the belt, press the buckle release button and
allow the belt to retract.
If the belt does not retract smoothly, pull it out and check for
kinks or twists. Then make sure it remains untwisted as it
retracts.
Rear center seat belt
SV16087

1Buckle with light gray buckle -release button
2Buckle with red buckle - release button
The rear center seat belt is a 3-point type restraint with 2
buckles. Both seat belt buckles must be correctly located and
securely latched for proper operation.
Make sure that buckle (with light gray buckle-release button)
is securely latched for ready use of the center seat belt.
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OCCUPANT RESTRAINT SYSTEMS
11 5
SV16088
Two buckles and tabs for rear center seat belt.
The 2 buckles for the rear center seat belt are distinguished
with colors of the buckle release button. Also the 2 tabs have
different shape for its end so that the belt is not buckled in the
wrong place.
1Buckle with light gray buckle-release button -
Properly matches with concave end tab
2Buckle with red buckle-release button - Properly
matches with round end tab
CAUTION
Make sure the both buckles are correctly located and
securely latched. Failure to properly match the buckle
and tab may cause serious injury in case of an accident
or a collision.
SV16089
To release the concave end tab, insert the key into the hole on
buckle (with light gray buckle-release button ) and allow the
belt to retract.
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OCCUPANT RESTRAINT SYSTEMS
11 6
SV16090
CAUTION
Do not use the rear center seat belt with either buckle
released. Fastening only the shoulder belt or lap belt
may cause severe personal injury in case of sudden
braking or a collision.
Stowing the rear center seat belt
SV16105
1To stow the rear center seat belt, line the concave end tab
upon the round end tab.
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OCCUPANT RESTRAINT SYSTEMS
11 7
SV16106
2Wrap up the concave end tab and the round end tab lined
upon each other.
SV16107
3Insert these tabs in the hollow of the seat belt cover, pull
it up and hook it while pressing the ºPushº mark.
Seat belt must be stowed before you fold the seatback. (See
ºFold-down rear seatsº on page 105.)
NOTICE
Stow the rear center seat belt except when you are wear-
ing it.
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OCCUPANT RESTRAINT SYSTEMS
11 8
Pulling out the rear center seat belt
SV16108
To use the rear center seat belt, press ºPUSHº mark and
pull out the tabs.
Seat belt extender
If your seat belts cannot be fastened securely because they
are not long enough, a personalized seat belt extender is
available from your Lexus dealer free of charge.
Please contact your local Lexus dealer to order the proper
required length for the extender. Bring the heaviest coat you
expect to wear for proper measurement and selection of
length. Additional ordering information is available at your
Lexus dealer.
CAUTION
When using the seat belt extender, observe the
following precautions. Failure to follow these
instructions could reduce the effectiveness of the seat
belt restraint system in case of an accident, increasing
the chance of personal injury.
Remember that the extender provided for you may
not be safe when used on a different vehicle, for
another person or at a different seating position than
the one originally intended.
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OCCUPANT RESTRAINT SYSTEMS
11 9
Be sure to wear the seat belt without the seat belt
extender if you can fasten the seat belt without the
extender.
 Do not use the seat belt extender when installing a
child restraint system on the front or rear passenger
seat. If installing a child restraint system with the seat
belt extender connected to the seat belt, the seat belt
will not securely hold the child restraint system,
which could cause death or serious injury to the child
or other passengers in the event of collision.
SV16050
To connect the extender to the seat belt, insert the tab into
the seat belt buckle so that the ºPRESSº signs on the
buckle release buttons of the extender 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 extender itself.
When not in use, remove the extender and store in the vehicle
for future use.
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OCCUPANT RESTRAINT SYSTEMS
120
CAUTION
After inserting the tab, make sure the tab and buckle
are locked and that the lap and shoulder portions of
the belt and the seat belt extender are 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 Lexus dealer. Do not use
the seat until the seat belt is fixed, because it cannot
protect an adult occupant or your child from injury.
Seat belt pretensioners
SV16151
The driver and front passenger's seat belt pretensioners
are designed to be activated in response to a severe
frontal impact.
When the sensor detects a severe frontal impact, the front seat
belts are quickly drawn back by the retractor so that the belts
snugly restrain the front seat occupants.
The seat belt pretensioners are activated even with no
passenger in the front seat.
The seat belt pretensioners and SRS airbags may not operate
together in all collisions.
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OCCUPANT RESTRAINT SYSTEMS
121
SV16068

1SRS warning light
2Seat belt pretensioner assemblies
3Airbag sensor assembly
4Front airbag sensors
The seat belt pretensioner system consists mainly of the
above components, and their locations are shown in the
illustration.
The seat belt pretensioners are controlled by the airbag sensor
assembly. The airbag sensor assembly consists of a safing
sensor and airbag sensor.
When the seat belt pretensioners are activated, an operating
noise may be heard and a small amount of non-toxic gas may
be released. This does not indicate that a fire is occurring. This
gas is normally harmless.
Once the seat belt pretensioners have been activated, the seat
belt retractors remain locked.
CAUTION
Do not modify, remove, strike or open the seat belt
pretensioner assemblies, airbag sensor or surrounding
area or wiring. Failure to follow these instructions may
prevent the seat belt pretensioners from activating
correctly, cause sudden operation of the system or
disable the system, which could result in death or
serious injury. Consult your Lexus dealer about any
repair and modification.
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