2005 TOYOTA SIENNA light

05 SIENNA_U (L/O 0409)
11 0
2005 SIENNA from Sep. ’04 Prod. (OM45431U)
Collision from
the rear
Collision from the side Vehicle rollover
The SRS front airbags are generally not
designed to inflate if the vehicle is in-
volved in a side or rear collision, if it
rolls over, or if it is involved in a low
speed frontal collision. But, when ever a
collision of any type causes sufficient
forward deceleration of the vehicle, de-
ployment of the SRS front airbags may
occur.
Hitting a curb,
edge of pavement
or hard surface Falling into or
jumping over
a deep hole
Landing hard or vehicle falling
The SRS front airbags may also deploy
if a serious impact occurs to the under-
side of your vehicle. Some examples
are shown in the illustration.The SRS front airbag system consists
mainly of the following components, and
their locations are shown in the illustra-
tion. 1. Front airbag sensors
2. SRS warning light
3. Airbag module for front passenger (airbag and inflator)
4. “AIRBAG ON” and “AIRBAG OFF” indi- cator lights
5. Front passenger occupant classification system (ECU and sensors)
6. Front passenger ’s seat belt buckle switch
7. Driver ’s seat belt buckle switch

05 SIENNA_U (L/O 0409)
11 4
2005 SIENNA from Sep. ’04 Prod. (OM45431U)
This warning light system monitors the
airbag sensor assembly, front airbag sen-
sors, side and curtain shield airbag sensor
assemblies, curtain shield airbag sensor
assemblies, driver ’s seat position sensor,
driver’s seat belt buckle switch, front pas-
senger occupant classification system,
“AIRBAG ON” indicator light, “AIRBAG
OFF” indicator light, front passenger ’s seat
belt buckle switch, seat belt pretensioner
assemblies, inflators, interconnecting wir-
ing and power sources. (For details, see
“Service reminder indicators and warning
buzzers” on page 175 in Section 1−6.)
If any of the following conditions occurs,
this indicates a malfunction of the airbags
or seat belt pretensioners. Contact your
Toyota dealer as soon as possible.
When the ignition key is turned to the
“ON” position, the light does not come
on, remains on for more than 6 sec-
onds or flashes.
The light comes on or starts flashing
while driving. If the light stays on, it indicates that the
SRS driver and front passenger airbag
system and/or front passenger occupant
classification system and “AIRBAG ON”
and “AIRBAG OFF” indicator lights have a
problem. If the light flashes, the SRS side
airbag system and/or curtain shield airbag
system have a problem.
The SRS warning light and “AIRBAG OFF”
indicator light will come on if there is a
malfunction in the front passenger occu-
pant classification system.
In the following cases, contact your Toyota
dealer as soon as possible:
The SRS front airbags have been in-
flated.
The front of the vehicle (shaded in the
illustration) was involved in an accident
that was not severe enough to cause
the SRS front airbags to inflate.
The pad section of the steering wheel
or dashboard (shaded in the illustra-
tion) is scratched, cracked, or other-
wise damaged.

05 SIENNA_U (L/O 0409)
11 7
2005 SIENNA from Sep. ’04 Prod. (OM45431U)
Collision from the rear
Collision from the front Vehicle rollover
The SRS side airbags and curtain shield
airbags are not generally designed to
inflate if the vehicle is involved in a
front or rear collision, if it rolls over,
or if it is involved in a lowspeed side
collision.The SRS side airbag and curtain shield
airbag system consists mainly of the fol-
lowing components, and their locations are
shown in the illustration.1. SRS warning light
2. “AIRBAG ON” and “AIRBAG OFF” indi- cator lights
3. Curtain shield airbag modules (airbag and inflator)
4. Front passenger occupant classification system (ECU and sensors)
5. Side airbag modules (airbag and inflator)
6. Curtain shield airbag sensors
7. Side and curtain shield airbag sensors 8. Front passenger ’s seat belt buckle
switch
9. Airbag sensor assembly
The SRS side airbag and curtain shield
airbag system is controlled by the airbag
sensor assembly. The airbag sensor as-
sembly consists of a safing sensor and
airbag sensor.
In a severe side impact, the side and
curtain shield airbag sensor and/or the
curtain shield airbag sensor trigger(s) the
side airbag inflators and/or the curtain
shield airbag inflators. At this time a
chemical reaction in the inflators quickly
fills the airbags with non −toxic gas to help
restrain the lateral motion of the occu-
pants.
When the airbags inflate, they produce a
fairly loud noise and release some smoke
and residue along with non −toxic gas. This
does not indicate a fire. This smoke may
remain inside the vehicle for some time,
and may cause some minor irritation to
the eyes, skin or breathing. Be sure to
wash off any residue as soon as possible
to prevent any potential skin irritation with
soap and water. If you can safely exit
from the vehicle, you should do so imme-
diately.

05 SIENNA_U (L/O 0409)
121
2005 SIENNA from Sep. ’04 Prod. (OM45431U)
NOTICE
Do not perform any of the following
changes without consulting your
Toyota dealer. Such changes can
interfere with proper operation of the
SRS side airbag and curtain shield
airbag system in some cases.
Installation of electronic devices
such as a mobile twoway radio,
cassette tape player or compact
disc player
 Modification of the suspension sys-
tem
 Modification of the side structure of
the passenger compartment
 Repairs made on or near the con-
sole or front seat
This indicator comes on when the igni-
tion switch is turned to the “ON” posi-
tion. It goes off after about 6 seconds.
This means the SRS side airbags and
curtain shield airbags are operating
properly. This warning light system monitors the
airbag sensor assembly, front airbag sen-
sors, side and curtain shield airbag sensor
assemblies, curtain shield airbag sensor
assemblies, driver ’s seat position sensor,
driver’s seat belt buckle switch, front pas-
senger occupant classification system,
“AIRBAG ON” indicator light, “AIRBAG
OFF” indicator light, front passenger ’s seat
belt buckle switch, seat belt pretensioner
assemblies, inflators, interconnecting wir-
ing and power sources. (For details, see
“Service reminder indicators and warning
buzzers” on page 175 in Section 1
−6.)
If any of the following conditions occurs,
this indicates a malfunction of the airbags
or seat belt pretensioners. Contact your
Toyota dealer as soon as possible.
When the ignition key is turned to the
“ON” position, the light does not come
on, remains on for more than 6 sec-
onds or flashes.
The light comes on or starts flashing
while driving.

05 SIENNA_U (L/O 0409)
122
2005 SIENNA from Sep. ’04 Prod. (OM45431U)
If the light stays on, it indicates that the
SRS driver and front passenger airbag
system and/or front passenger occupant
classification system and “AIRBAG ON”
and “AIRBAG OFF” indicator lights have a
problem. If the light flashes, the SRS side
airbag system and/or curtain shield airbag
system have a problem.
The SRS warning light and “AIRBAG OFF”
indicator light will come on if there is a
malfunction in the front passenger occu-
pant classification system.In the following cases, contact your Toyota
dealer as soon as possible:
Any of the SRS side airbags and cur-
tain shield airbags have been inflated.
The portion of the doors (shaded in the
illustration) was involved in an accident
that was not severe enough to cause
the SRS side airbags and curtain
shield airbags to inflate.
The surface of the seats with the side
airbag (shaded in the illustration) is
scratched, cracked, or otherwise dam-
aged.
The portion of the front pillars, side
pillars or roof side rail garnishes (pad-
ding) containing the curtain shield air-
bags inside (shaded in the illustration)
is scratched, cracked, or otherwise
damaged.
NOTICE
Do not disconnect the battery cables
before contacting your Toyota dealer.

05 SIENNA_U (L/O 0409)
123
2005 SIENNA from Sep. ’04 Prod. (OM45431U)
Your vehicle is equipped with a front
passenger occupant classification sys-
tem. This system detects the conditions
1—4 in the table on page 125 and based
on these conditions activates or deacti-
vates front passenger airbags. The sys-
tem monitors the weight and load on
the front passenger seat, and the seat
belt buckle switch to determine condi-
tions 1—4.
In order for the system to detect the
conditions correctly, do not do any of
the following:
Apply a heavy load to the front pas-
senger seat or equipment (e.g. seat-
back table, grocery bag hooks, armrest
or auxiliary box).
Attach a commercial seatback table,
etc. to the front passenger seat seat-
back.
Put weight on the front passenger seat
by putting your hands or feet on the
seatback from the rear passenger seat.
The “AIRBAG ON” and “AIRBAG OFF”
indicator lights indicate the actuation of
the front passenger airbag, side airbag
on the front passenger seat and front
passenger ’s seat belt pretensioner.
The “AIRBAG OFF” indicator light will be
illuminated when the ignition switch is in
the “ON” position with the condition 2 in
the table shown below.If the front passenger occupant classifica-
tion system determines that a person of
adult size sits in the front passenger seat
but the “AIRBAG OFF” indicator light is
illuminated, one of the following is likely
to have occurred:
A rear passenger lifts the front passen-
ger seat cushion with their legs.
Objects are placed under the front pas-
senger seat.
The front passenger seatback is in
contact with the second seat.
To ensure the system correctly detects an
adult sitting in the front passenger seat,
make sure the above do not occur.
Make sure that the “AIRBAG ON” indicator
light is illuminated when an adult is
seated in the front passenger seat. If the
“AIRBAG OFF” indicator light is illumina-
ted, ask the passenger to sit up straight,
well back in the seat, and with the seat
belt worn correctly. If the “AIRBAG OFF”
indicator light still remains illuminated, ei-
ther ask the passenger to move to the
rear seat, or if that is not possible, move
the front passenger seat fully rearward.
—Front passenger occupant
classification system

05 SIENNA_U (L/O 0409)
124
2005 SIENNA from Sep. ’04 Prod. (OM45431U)
The “AIRBAG ON” and “AIRBAG OFF”
indicator lights will be illuminated ini-
tially when the ignition key is turned to
the “ON” position. After about 4 sec-
onds, they will go off. After that, the
front passenger occupant classification
system operates and judges which indi-
cator light be illuminated.
The SRS warning light and “AIRBAG
OFF” indicator light will come on if
there is a malfunction in the front pas-
senger occupant classification system.

05 SIENNA_U (L/O 0409)
125
2005 SIENNA from Sep. ’04 Prod. (OM45431U)
Condition and operation in the front passenger occupant classification systemCondition detected by the front
passenger occupant
classification system
Indicator/warning lightDevices
“AIRBAG ON” and “AIRBAG OFF”indicator lightsSRS warning light
Front
passenger ’s seat belt
reminder lightFront
passenger airbagSide airbag
on the front passenger seatCurtain shieldairbag in the front
passenger sideFront
passenger ’s seat belt
pretensioner
1. Adult∗ 1“AIRBAG ON”OffFlashing∗4Activated
2. Child∗2 or child
restraint system∗ 3“AIRBAG OFF”OffFlashing∗4Deactivated
Activated
Activated
3. UnoccupiedNot illuminatedOffOffDeactivatedDeactivated
4. There is a
malfunction in the
system
“AIRBAG OFF”OnOffDeactivatedActivated
∗1: The system judges a person of adult size as an adult. When a smaller adult sits in the front passenger seat, the system may
recognize him/her as a child depending on his/her physique and posture.
∗2: When a larger child who has outgrown a child restraint system sits in the front passenger seat, the system may recognize him/h er
as an adult depending on his/her physique or posture.
∗ 3: Never install a rear −facing child restraint system on the front passenger seat. A forward −facing child restraint system should only be
installed on the front passenger seat when it is unavoidable. (See “Child restraint” on page 127 in this Section as for install ing the
child restraint system.)
∗ 4: In the event that the front passenger does not wear a seat belt.