belt TOYOTA SIENNA 2018 (in English) Owner's Manual

411-1. For safe use
SIENNA_OM_OM08019U_(U)
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For safety and security
Your vehicle is equipped with ADVANCED AIRBAGS designed based
on the US motor vehicle safety standards (FMVSS208). The airbag
sensor assembly (ECU) controls airbag deployment based on infor-
mation obtained from the sensors etc. shown in the system compo -
nents diagram above. This informat ion includes crash severity and
occupant information. As the airbags deploy, a chemical reactio n in
the inflators quickly fills the airbags with non-toxic gas to h elp restrain
the motion of t he occupants.
WARNING
■SRS airbag precautions
Observe the following precautions regarding the SRS airbags.
Failure to do so may cause death or serious injury.
● The driver and all passengers in the vehicle must wear their se at belts
properly.
The SRS airbags are supplemental devices to be used with the se at belts.
● The SRS driver airbag deploys with considerable force, and can cause
death or serious injury especially if the driver is very close to the airbag.
The National Highway Traffic Safety Administration (NHTSA) advi ses:
Since the risk zone for the driver’s airbag is the first 2 - 3 in. (50 - 75 mm)
of inflation, placing yourself 10 in. (250 mm) from your driver airbag pro-
vides you with a clear margin of safety. This distance is measured from
the center of the steering wheel to your breastbone. If you sit less than 10
in. (250 mm) away now, you can change your driving position in several
ways:
• Move your seat to the rear as far as you can while still reach ing the ped-
als comfortably.
• Slightly recline the back of the seat.
Although vehicle designs vary, many drivers can achieve the 10 in. (250
mm) distance, even with the driver seat all the way forward, si mply by
reclining the back of the seat somewhat. If reclining the back of your
seat makes it hard to see the road, raise yourself by using a f irm, non-
slippery cushion, or raise the seat if your vehicle has that feature.
• If your steering wheel is adjustable, tilt it downward. This points the air-
bag toward your chest instead of your head and neck.
The seat should be adjusted as recommended by NHTSA above, whil e
still maintaining control of the foot pedals, steering wheel, and your view
of the instrument panel controls.

421-1. For safe use
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WARNING
■SRS airbag precautions
● The SRS front passenger airbag also deploys with considerable f orce, and
can cause death or serious injury especially if the front passe nger is very
close to the airbag. The front passenger seat should be as far from the air-
bag as possible with the seatback adjusted, so the front passenger sits
upright.
● Improperly seated and/or restrained infants and children can be killed or
seriously injured by a deploying airbag. An infant or child who is too small
to use a seat belt should be properly secured using a child restraint sys-
tem. Toyota strongly recommends that all infants and children b e placed in
the rear seats of the vehicle and properly restrained. The rear seats are
safer for infants and children than the front passenger seat. ( P. 58)
●If the seat belt extender has been con-
nected to the front seat belt buckles but
the seat belt extender has not also been
fastened to the latch plate of the seat
belt, the SRS front airbags will judge
that the driver and front passenger are
wearing the seat belt even though the
seat belt has not been connected. In
this case, the SRS front airbags may
not activate correctly in a collision,
resulting in death or serious injury in the
event of a collision. Be sure to wear the
seat belt with the seat belt extender.

471-1. For safe use
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For safety and security
■If the SRS airbags deploy (inflate)
●Slight abrasions, burns, bruising etc., may be sustained from S RS airbags,
due to the extremely high speed deployment (inflation) by hot g ases.
● Bruising and slight abrasions may result from contact with a de ploying
(inflating) SRS airbag.
● A loud noise and white powder will be emitted.
● Parts of the airbag module (steering wheel hub, airbag cover an d inflator) as
well as the front seats, parts of the front and rear pillars, a nd roof side rail,
may be hot for several minutes. The airbag itself may also be h ot.
● The windshield may crack.
● For Safety Connect subscribers, if the SRS airbags deploy or in the event of
a severe rear-end collision, the system is designed to send an emergency
call to the response center, notifying them of the vehicle’s location (without
needing to push the “SOS” button) and an agent will attempt to speak with
the occupants to ascertain the level of emergency and assistanc e required.
If the occupants are unable to communicate, the agent automatic ally treats
the call as an emergency and helps to dispatch the necessary em ergency
services. ( P. 385)
■ SRS airbag deployment condi tions (SRS front airbags)
● The SRS front airbags will deploy in the event of an impact tha t exceeds the
set threshold level (the level of force corresponding to an approximately 12 -
18 mph [20 - 30 km/h] frontal collision with a fixed wall that does not move or
deform).
However, this threshold velocity will be considerably higher in the following
situations:
• If the vehicle strikes an object, such as a parked vehicle or sign pole,
which can move or deform on impact
• If the vehicle is involved in an underride collision, such as a collision in
which the front of the vehicle “underrides”, or goes under, the bed of a
truck
● Depending on the type of collision, it is possible that only th e seat belt pre-
tensioners will activate.
● The SRS front airbags for the front passenger will not activate if there is no
passenger sitting in the front passenger seat. However, the SRS front air-
bags for the front passenger may deploy if luggage is put in the seat, even if
the seat is unoccupied. ( P. 52)
● The SRS seat cushion airbag on the front passenger’s seat will not operate
if the occupant is not wearing a seat belt.

521-1. For safe use
SIENNA_OM_OM08019U_(U)
Front passenger occupant classification
system
SRS warning light
Seat belt reminder light
“AIR BAG OFF” indicator light
“AIR BAG ON” indicator light
Your vehicle is equipped with a front passenger occupant classi -
fication system. This system det ects the conditions of the front
passenger seat and activates or deactivates the devices for the
front passenger.
U.S.A. Canada
1
2
3
4

531-1. For safe use
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For safety and security
■Adult*1
■Child*4 or child restraint system*5
Condition and operation in the front passenger occupant classi-
fication system
Indicator/
warning light “AIR BAG ON” and “AIR BAG OFF”
indicator lights “AIR BAG ON”
SRS warning light Off
Seat belt reminder light Off
*2 or
flashing
*3
Devices Front passenger airbag
Activated
Side airbag on the front passenger seat
Curtain shield airbag in the front passenger side
Front passenger’s seat cushion airbag Activated*2
or
deactivated
*3
Front passenger’s seat belt pretensioner and force limiter Activated
Indicator/
warning light “AIR BAG ON” and “AIR BAG OFF”
indicator lights “AIR BAG
OFF”
*6
SRS warning light Off
Seat belt reminder light Off
*2 or
flashing
*3
Devices Front passenger airbag Deactivated
Side airbag on the front passenger seat Activated
Curtain shield airbag in the front
passenger side
Front passenger’s seat cushion airbag Deactivated
Front passenger’s seat belt pretensioner and force limiter Activated

541-1. For safe use
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Unoccupied
■There is a malfunction in the system
Indicator/
warning light “AIR BAG ON” and “AIR BAG OFF”
indicator lights Not illuminated
SRS warning light Off
Seat belt reminder light
Devices Front passenger airbag Deactivated
Side airbag on the front passenger seat Activated
Curtain shield airbag in the front
passenger side
Front passenger’s seat cushion airbag Deactivated
Front passenger’s seat belt pretensioner and force limiter Activated
*7
or
deactivated
*8
Indicator/
warning light “AIR BAG ON” and “AIR BAG OFF”
indicator lights “AIR BAG
OFF”
SRS warning light On
Seat belt reminder light Off
Devices Front passenger airbag
Deactivated
Side airbag on the front passenger seat Activated
Curtain shield airbag in the front
passenger side
Front passenger’s seat cushion airbag Deactivated
Front passenger’s seat belt pretensioner and force limiter Activated

551-1. For safe use
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For safety and security
*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 recogniz e him/her
as a child depending on his/her physique and posture.
*2: In the event the front passenger is wearing a seat belt.
*3: In the event the front passenger does not wear a seat belt.
*4: When a larger child who has outgrown a child restraint system sits in the front passenger seat, the system may recognize him/her as an ad ult
depending on his/her physique or posture.
*5: 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. ( P. 59)
*6: In case the indicator light is not illuminated, consult this m anual on how to
install the child restraint system properly. ( P. 62)
*7: In the event of a side collision.
*8: In the event of a frontal collision or rollover.
WARNING
■Front passenger occupant classification system precautions
Observe the following precautions regarding the front passenger occupant
classification system.
Failure to do so may cause death or serious injury.
● Wear the seat belt properly.
● Make sure the front passenger’s seat belt plate has not been le ft inserted
into the buckle before someone sits in the front passenger seat .
● Make sure the “AIR BAG OFF” indicator light is not illuminated when using
the seat belt extender for the front passenger seat. If the “AI R BAG OFF”
indicator light is illuminated, disconnect the extender tongue from the seat
belt buckle, and reconnect the seat belt. Reconnect the seat be lt extender
after making sure the “AIR BAG ON” indicator light is illuminat ed. If you
use the seat belt extender while the “AIR BAG OFF” indicator li ght is illumi-
nated, the SRS airbags for the front passenger will not activate, which
could cause death or serious injury in the event of a collision .
● Do not apply a heavy load to the front passenger seat or equipm ent (e.g.
seatback pocket or armrest).
● Do not put weight on the front passenger seat by putting your hands or
feet on the front passenger seat seatback from the rear passeng er seat.
● Do not let a rear passenger lift the front passenger seat with their feet or
press on the seatback with their legs.
● Do not put objects under the front passenger seat.

561-1. For safe use
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WARNING
■Front passenger occupant classification system precautions
● Do not recline the front passenger seatback so far that it touc hes a rear
seat. This may cause the “AIR BAG OFF” indicator light to be il luminated,
which indicates that the SRS airbags for the front passenger wi ll not acti-
vate in the event of a severe accident. If the seatback touches the rear
seat, return the seatback to a position where it does not touch the rear
seat. Keep the front passenger seatback as upright as possible when the
vehicle is moving. Reclining the seatback excessively may lesse n the
effectiveness of the seat belt system.
● If an adult sits in the front passenger seat, the “AIR BAG ON” indicator
light is illuminated. If the “AIR BAG OFF” indicator is illuminated, ask the
passenger to sit up straight, well back in the seat, feet on the floor, and
with the seat belt worn correctly. If the “AIR BAG OFF” indicat or still
remains illuminated, either ask the passenger to move to the re ar seat, or
if that is not possible, move the front passenger seat fully re arward.
● When it is unavoidable to install a forward-facing child restra int system on
the front passenger seat, install the child restraint system on the front pas-
senger seat in the proper order. ( P. 62)
● Do not modify or remove the front seats.
● Do not kick the front passenger seat or subject it to severe im pact. Other-
wise, the SRS warning light may come on to indicate a malfuncti on of the
front passenger occupant classification system. In this case, contact your
Toyota dealer immediately.
● Child restraint systems installed on the rear seat should not c ontact the
front seatbacks.
● Do not use a seat accessory, such as a cushion and seat cover, that cov-
ers the seat cushion surface.
● Do not modify or replace the upholstery of the front seat.

571-1. For safe use
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For safety and security
Safety information for children
●It is recommended that children sit in the rear seats to avoid acci-
dental contact wit h the shift lever, wiper switch etc.
● Use the sliding door child-protector lock or the window lock sw itch
to avoid children opening the door while driving or operating t he
power window accidentally. ( P. 125, 184)
● Do not let small children operate equipment which may catch or
pinch body parts, such as the power window, hood, back door,
seats etc.
Observe the following precautions when children are in the vehi -
cle.
Use a child restraint system app ropriate for the child, until the
child becomes large enough to properly wear the vehicle’s seat
belt.
WARNING
Never leave children unattended in the vehicle, and never allow children to
have or use the key.
Children may be able to start the vehicle or shift the vehicle into neutral.
There is also a danger that children may injure themselves by p laying with
the windows, the moon roof (if equipped) or other features of t he vehicle. In
addition, heat build-up or extremely cold temperatures inside t he vehicle
can be fatal to children.

581-1. For safe use
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Child restraint systems
Studies have shown that installing a child restraint system on a rear
seat is much safer than insta lling one on the front passenger s eat.
● Choose a child restraint system that suits your vehicle and is appro-
priate to the age and size of the child.
● For installation details, follow the instructions provided with the child
restraint system.
General installation instructio ns are provided in this manual.
(  P. 62)
A child restraint system for a small child or baby must itself be
properly restrained on the seat with the LATCH anchors or the
lap portion of the lap/shoulder belt.
The laws of all 50 states of U. S.A. and Canada now require the
use of child res traint systems.
Points to remember