2021 TOYOTA SIENNA HYBRID warning light

391-1. For safe use
1
For safety and security
■Automatic locking retractor
(ALR)
When a passenger’s shoulder belt is
completely extended and then
retracted even slightly, the belt is
locked in that position and cannot
be extended. This feature is used to
hold a child restraint system (CRS)
firmly. To free the belt again, fully
retract the belt and then pull the belt
out once more.
Push the seat belt shoulder
anchor up and down while
pressing the release button .
After releasing the button, make
sure the adjuster is locked in the
position by trying t o move it up and
down.
The pretensioners help the seat
belts to quickly restrain the
occupants by retracting the seat
belts when the vehicle is sub-
jected to certain types of severe
frontal or side collision or a vehi-
cle rollover.
The pretensioners do not activate
in the event of a minor frontal
impact, a minor s ide impact or a
rear impact.
WARNING
■When using the third center
seat belt
Do not use the third center seat
belt with either buckle released.
Fastening only one of the buckles
may result in death or serious
injury in case of sudden braking,
sudden swerving or an accident.
Adjusting the seat belt
shoulder anchor height
(front and second outside
seats [8-passenger mod-
els])
A
:$51,1*
■Adjustable shoulder anchor
Always make sure the shoulder
belt is positioned across the cen-
ter 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 death or
serious injuries in the event of a
sudden stop, sudden swerve or
accident.
Seat belt pretensioners
(front seats)

401-1. For safe use
■Replacing the belt after the pre-
tensioner has been activated
If the vehicle is in volved in multiple
collisions, the pretensioner will acti-
vate for the first collision, but will not
activate for the second or subse-
quent collisions.
■PCS-linked seat belt preten-
sioner control
If the PCS (Pre-Collision System)
determines that the possibility of a
collision with a vehicle is high, the
seat belt pretens ioners will be pre-
pared to operate.
WARNING
■Seat belt pretensioners
Observe the following precautions
to reduce the risk of injury in the
event of sudden braking, sudden
swerving or an accident.
Failure to do so may cause death
or serious injury.
●Do not place anything, such as
a cushion, on the front passen-
ger’s seat.
Doing so will disperse the pas-
senger’s weight, which prevents
the sensor from detecting the
passenger’s weight properly. As
a result, the seat belt preten-
sioner for the front passenger’s
seat may not activate in the
event of a collision.
●If the pretensioner has acti-
vated, the SRS warning light will
come on. In that case, the seat
belt cannot be used again and
must be replaced at your Toyota
dealer.

431-1. For safe use
1
For safety and security
Side impact sensors (rear)
Driver’s seat belt buckle switch
Driver’s seat position sensor
Driver airbag
Front passenger occupant classification sensors
Driver’s knee airbag
SRS warning light
Airbag sensor assembly
Your vehicle is equipped with ADVANCED AIRBAGS designed
based on the US motor vehicle safety standards (FMVSS208). The
airbag sensor assembly (ECU) cont rols airbag deployment based on
information obtained from the sensors etc. shown in the system
components diagram above. This in formation includes crash sever-
ity and occupant information. As the airbags deploy, a chemical
reaction in the inflators quickly fills the airbags with non-toxic gas to
help restrain the motion of the occupants.
■If the SRS airbags deploy
(inflate)
●Slight abrasions, burns, bruising
etc., may be sustained from SRS
airbags, due to the extremely high
speed deployment (inflation) by
hot gases.
●A loud noise and white powder will
be emitted.
●Parts of the airbag module (steer-
ing wheel hub, airbag cover and
inflator) as well as the front seats,
parts of the front and rear pillars,
and roof side rails, may be hot for
several minutes. T he airbag itself
may also be hot.
●The windshield may crack.
●The hybrid system will be stopped
and fuel supply to the engine will
be stopped. ( P.86)
●All of the doors will be unlocked
(  P.134)
●The brakes and st op lights will be
controlled automatically. (
 P.336)
●The interior lights will turn on auto-
matically. ( P.365)
●The emergency flashers will turn
on automatically. ( P.458)
●For Safety Connect subscribers, if
any of the following situations
occur, 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 assis-
tance required. If the occupants
are unable to communicate, the
agent automatically treats the call
as an emergency and helps to dis-
patch the necessary emergency
services. ( P.75)
• An SRS airbag is deployed.
• A seat belt pretensioner is acti- vated.
• The vehicle is involved in a severe rear-end collision.
L
M
N
O
P
Q
R
S

471-1. For safe use
1
For safety and security
WARNING
●The SRS driver airbag deploys
with considerable force, and
can cause death or serious
injury especially i f the driver is
very close to the airbag. The
National Highway Traffic Safety
Administration (NHTSA)
advises: 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 provides
you with a clear margin of
safety. This distance is mea-
sured from the center of the
steering wheel to your breast-
bone. 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 pedals 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, simply 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 firm,
non-slippery cushion, or raise
the seat if your vehicle has that
feature.
• If your steering wheel is adjust- able, tilt it downward. This
points the airbag toward your
chest instead of your head and
neck.
The seat should be adjusted as
recommended by NHTSA above,
while still maintaining control of
the foot pedals, steering wheel,
and your view of the instrument
panel controls.
●If the seat belt extender has
been connected 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 su re to wear the
seat belt with the seat belt
extender.
●The SRS front passenger air-
bag also deploys with consider-
able force, and can cause death
or serious injury especially if the
front passenger is very close to
the airbag. The front passenger
seat should be as far from the
airbag as possible with the seat-
back adjusted, so the front pas-
senger 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
system. Toyota strongly recom-
mends that all infants and chil-
dren be 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)

511-1. For safe use
1
For safety and security
SRS warning light
Seat belt reminder light
“AIR BAG OFF” indicator light
“AIR BAG ON” indicator light
Front passenger occupant classification system
Your vehicle is equipped with a front passenger occupant
classification system. This system detects the conditions of
the front passenger seat and activates or deactivates the front
passenger airbag and seat cushion airbag in the front passen-
ger side.
System components
A
B
C
D
:$51,1*
■Front passenger occupant
classification system precau-
tions
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 left
inserted into the buckle before
someone sits in the front pas-
senger seat.

521-1. For safe use
WARNING
●Make sure the “AIR BAG OFF”
indicator light is not illuminated
when using the seat belt
extender for the front passenger
seat. If the “AIR BAG OFF” indi-
cator light is illuminated, discon-
nect the extender tongue from
the seat belt buckle, and recon-
nect the seat belt. Reconnect
the seat belt extender after
making sure the “AIR BAG ON”
indicator light is illuminated. If
you use the seat belt extender
while the “AIR BAG OFF” indi-
cator light is illuminated, the
SRS airbags for the front pas-
senger will not activate, which
could cause death or serious
injury in the ev ent of a collision.
●Do not apply a heavy load to the
front passenger seat or equip-
ment (e.g. seatback pocket).
●Do not put weight on the front
passenger seat by putting your
hands or feet on the front pas-
senger seat seatback from the
rear passenger seat.
●Do not let a rea r passenger lift
the front passenger seat with
their feet or press on the seat-
back with their legs.
●Do not put objects under the
front passenger seat.
●Do not recline t he front passen-
ger seatback so far that it
touches a rear seat. This may
cause the “AIR BAG OFF” indi-
cator light to be illuminated,
which indicates that the SRS
airbags for the front passenger
will not activate 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 seat-
back as upright as possible
when the vehicle is moving.
Reclining the seatback exces-
sively may lessen the effective-
ness of the seat belt system.
●If an adult sits i n the front pas-
senger seat, the “AIR BAG ON”
indicator light i s 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” indicator
still remains illumi nated, either
ask the passenger to move to
the rear seat, or if that is not
possible, move the front pas-
senger seat fully rearward.
●When it is unavoidable to install
a forward-facing child restraint
system on the front passenger
seat, install the child restraint
system on the front passenger
seat in the proper order.
(  P.61)
●Do not modify or remove the
front seats.
●Do not kick the front passenger
seat or subject it to severe
impact. Otherwise, the SRS
warning light m ay come on to
indicate a malfu nction of the
front passenger occupant clas-
sification system. In this case,
contact your Toyota dealer
immediately.

531-1. For safe use
1
For safety and security
■Adult*1
■Child*4
WARNING
●Child restraint systems installed
on the rear seat should not con-
tact the front seatbacks.
●Do not use a seat accessory,
such as a cushion and seat
cover, that covers the seat
cushion surface.
●Do not modify or replace the
upholstery of the front seat.
Condition and operation in th e front passenger occupant
classification system
Indicators/warn- ing lights
“AIR BAG ON” and “AIR BAG OFF” indicator lights“AIR BAG ON”
SRS warning lightOff
Seat belt reminder lightOff*2 or flashing*3
Devices
Front passenger airbagActivated
Front passenger’s seat cushion air- bagActivated *2 or
deactivated
*3
Indicators/warn- ing lights
“AIR BAG ON” and “AIR BAG OFF” indicator lights“AIR BAG OFF” or “AIR BAG
ON”
*4
SRS warning lightOff
Seat belt reminder lightOff*2 or flashing*3
Devices
Front passenger airbagDeactivated or activated
*4
Front passenger’s seat cushion air- bagDeactivated or
activated
*2, 4

541-1. For safe use
■Child restraint system with infant*5
■Unoccupied
■There is a malfunction in the system
*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 hi s/her physique and posture.
*2: In the event the front passenger is wearing a seat belt.
*3: In the event the front passenge r does not wear a seat belt.
*4: For some children, child in seat, child in booster seat or chi ld in convert-
ible seat, the system may not recognize him/her as a child. Fac tors
which may affect this can be the physique or posture.
Indicators/warn- ing lights
“AIR BAG ON” and “AIR BAG OFF” indicator lights“AIR BAG OFF”
*6
SRS warning lightOff
Seat belt reminder lightOff*2 or flashing*3
Devices
Front passenger airbag
DeactivatedFront passenger’s seat cushion air- bag
Indicators/warn-ing lights
“AIR BAG ON” and “AIR BAG OFF” indicator lights“AIR BAG OFF”
SRS warning lightOffSeat belt reminder light
Devices
Front passenger airbag
DeactivatedFront passenger’s seat cushion air- bag
Indicators/warn-ing lights
“AIR BAG ON” and “AIR BAG OFF” indicator lights“AIR BAG OFF”
SRS warning lightOnSeat belt reminder light
Devices
Front passenger airbag
DeactivatedFront passenger’s seat cushion air- bag