2021 TOYOTA SIENNA HYBRID lock

631-2. Child safety
1
For safety and security
A child restraint system for a
small child or baby must itself be
properly restrained on the seat
with the lap portion of the
lap/shoulder belt.
■Installing child restraint
system using a seat belt
(child restraint lock func-
tion belt)
Install the child restraint system
in accordance to the operation
manual enclosed with the child
restraint system.
■Rear-facing  Infant
seat/convertible seat
1 Adjust the rear seat.
If there is a gap between the child
restraint system and the seatback,
adjust the seatback angle until
good contact is achieved.
WARNING
●Do not allow the child to lean
his/her head or any part of
his/her body against the door or
the area of the seat, front or rear
pillars, or roof side rails from
which the SRS side airbags or
SRS curtain shield airbags
deploy even if the child is
seated in the child restraint sys-
tem. It is dangerous if the SRS
side airbags and curtain shield
airbags inflate, and the impact
could cause death or serious
injury to the child.
●When a booster seat is
installed, always ensure that the
shoulder belt is positioned
across the center of the child’s
shoulder. The belt should be
kept away from the child’s neck,
but not so that it could fall off the
child’s shoulder.
●Use a child restraint system
suitable to the age and size of
the child and install it to the rear
seat.
●If the driver’s seat interferes
with the child restraint system
and prevents it from being
attached correctly, attach the
child restraint system to the
right-hand rear seat.
●Adjust the front passenger seat
so that it does not interfere with
the child restraint system.
Child restraint system
fixed with a seat belt

641-2. Child safety
2Place the child restraint sys-
tem on the rear seat facing
the rear of the vehicle.
3 Run the seat belt through the
child restraint system and
insert the plate into the
buckle. Make sure that the
belt is not twisted.
4 Fully extend the shoulder belt
and allow it to retract to put it
in lock mode. In lock mode,
the belt cannot be extended.
5 While pushing the child
restraint system down into the rear seat, allow the shoul-
der belt to retract until the
child restraint system is
securely in place.
After the shoulder belt has
retracted to a poi
nt where there is
no slack in the belt, pull the belt to
check that it cannot be extended.
6 After installing the child
restraint system, rock it back
and forth to ensure that it is
installed securely. ( P.67)
■Forward-facing  Convert-
ible seat
1 Adjust the seat.
When using the front passenger
seat: If installing th e child restraint
system to the front passenger seat
is unavoidable, refer to P.61for
front passenger seat adjustment.
When using the rear seat: If there is
a gap between the child restraint
system and the seatback, adjust
the seatback angle until good con-
tact is achieved.
2 If the head restraint interferes
with the child restraint system
installation and the head
restraint can be removed,

651-2. Child safety
1
For safety and security
remove the head restraint.
(P.183)
3 Place the child restraint sys-
tem on the seat facing the
front of the vehicle.
4 Run the seat belt through the
child restraint system and
insert the plate into the
buckle. Make sure that the
belt is not twisted.
5 Fully extend the shoulder belt
and allow it to retract to put it in lock mode. In lock mode,
the belt cannot be extended.
6 While pushing the child
restraint system into the rear
seat, allow the shoulder belt
to retract until the child
restraint system is securely in
place.
After the shoulder belt has
retracted to a poi nt where there is
no slack in the belt, pull the belt to
check that it cannot be extended.
7 If the child restraint has a top
tether strap, follow the child
restraint manufacturer’s
operation manual regarding
the installation, using the top
tether strap to latch onto the
top tether strap anchor.
( P.71)
8 After installing the child
restraint system, rock it back

671-2. Child safety
1
For safety and security
WARNING
■When installing a child
restraint system
Observe the following precau-
tions.
Failure to do so m ay result in
death or serious injury.
●Do not allow children to play
with the seat belt. If the seat belt
becomes twisted around a
child’s neck, it may lead to
choking or other serious injuries
that could result in death.
If this occurs and the buckle
cannot be unfastened, scissors
should be used to cut the belt.
●Ensure that the belt and plate
are securely locked and the
seat belt is not twisted.
●Shake the child restraint system
left and right, and forward and
backward to ensure that it has
been securely installed.
●After securing a child restraint
system, never adjust the seat.
●When a booster seat is
installed, always ensure that the
shoulder belt is positioned
across the center of the child’s
shoulder. The belt should be
kept away from the child’s neck,
but not so that it could fall off the
child’s shoulder.
●Follow all installation instruc-
tions provided by the child
restraint system manufacturer.
●When securing some types of
child restraint systems in rear
seats, it may not be possible to
properly use the seat belts in
positions next to the child
restraint without interfering with
it or affecting s eat belt effective-
ness. Be sure your seat belt fits
snugly across your shoulder
and low on your hips. If it does
not, or if it interferes with the
child restraint, move to a differ-
ent position. Fa ilure to do so
may result in death or serious
injury.
●When installing a child restraint
system in the ce nter rear seat,
adjust both seatbacks at the
same angle. Otherwise, the
child restraint system cannot be
securely restrained and this
may cause death or serious
injuries in the event of sudden
braking, sudden swerving or an
accident.
■When installing a booster
seat
To prevent the belt from going
into ALR lock mode, do not fully
extend the shoulder belt. ALR
mode causes the belt to tighten
only. This could cause injury or
discomfort to the child. ( P.39)
■Do not use a seat belt
extender
If a seat belt extender is used
when installing a child restraint
system, 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
sudden braking, sudden swerv-
ing or an accident.

681-2. Child safety
■Child restraint LATCH
anchors
LATCH anchors are provided for
the rear seats.
Second seats (8-passenger
models)
Second seats (7-passenger
models)
Third seats
■When installing in the sec-
ond seats and third seats
Install the child restraint system
in accordance to the operation
manual enclosed with the child
restraint system.
Second seats
1 Fold the seatback while pull-
ing the lever. Return the
seatback and secure it at the
1st lock position (most
upright position). Adjust the
seatback to the 6th lock posi-
tion.
If there is a gap between the child
restraint system and the seatback,
adjust the seatback angle until
good contact is achieved.
1st lock position
6th lock position
Third seats
1 Fold the seatback while pull-
ing the strap. Return the
seatback and secure it at the
1st lock position (most
upright position). Adjust the
seatback to the 11th lock
position.
If there is a gap between the child
restraint system and the seatback,
Child restraint system
fixed with a child restraint
LATCH anchor
A
B

691-2. Child safety
1
For safety and security
adjust the seatback angle until
good contact is achieved.
1st lock position
11th lock position
2 If the head restraint interferes
with the child restraint system
installation and the head
restraint can be removed,
remove the head restraint.
Otherwise, put the head
restraint in the upper most
position. ( P.182)
With flexible lower attach-
ments
3 Latch the hooks of the lower
attachments onto the LATCH
anchors.
For owners in Canada:
The symbol on a child
restraint system indicates the presence of a lower con-
nector system.
With rigid lower attachments
3 Latch the buckles onto the
LATCH anchors.
For owners in Canada:
The symbol on a child
restraint system indicates
A
B
A
A

851-4. Hybrid system
1
For safety and security
There are air intake vents under
the front seats for the purpose of
cooling the hybrid battery (trac-
tion battery). If the vent
becomes blocked, the hybrid
battery (traction battery) may
overheat, leading to a reduction
in hybrid battery (traction bat-
tery) output.
WARNING
●If a fire occurs in the hybrid
vehicle, leave the vehicle as
soon as possible. Never use a
fire extinguisher that is not
meant for electric fires. Using
even a small amount of water
may be dangerous.
●If your vehicle needs to be
towed, do so with four wheels
raised. If the wheels connected
to the electric motor (traction
motor) are on the ground when
towing, the motor may continue
to generate electricity. This may
cause a fire. ( P.462)
●Carefully inspect the ground
under the vehicle. If you find
that liquid has leaked onto the
ground, the fuel system may
have been damaged. Leave the
vehicle as soon as possible.
■Hybrid battery (traction bat-
tery)
●Never resell, hand over or mod-
ify the hybrid battery. To prevent
accidents, hybrid batteries that
have been removed from a dis-
posed vehicle are collected
through Toyota dealer. Do not
dispose of the battery yourself.
Unless the battery is properly col-
lected, the follo wing may occur,
resulting in dea th or serious
injury:
• The hybrid battery may be ille- gally disposed of or dumped,
and it is hazardous to the envi-
ronment or someone may touch
a high voltage part, resulting in
an electric shock.
• The hybrid battery is intended to be used exclusively with your
hybrid vehicle. If the hybrid bat-
tery is used out side of your
vehicle or modified in any way,
accidents such as electric
shock, heat generation, smoke
generation, an explosion and
electrolyte leakage may occur.
When reselling or handing over
your vehicle, the possibility of an
accident is extremely high
because the person receiving the
vehicle may not be aware of these
dangers.
●If your vehicle is disposed of
without the hybrid battery hav-
ing been removed, there is a
danger of serious electric shock
if high voltage parts, cables and
their connectors are touched. In
the event that your vehicle must
be disposed of, the hybrid bat-
tery must be disposed of by
your Toyota dealer or a qualified
service shop. If the hybrid bat-
tery is not disposed of properly,
it may cause electric shock that
can result in dea th or serious
injury.
Hybrid battery (traction
battery) air intake vents

861-4. Hybrid system
When a certain level of impact is
detected by the impact sensor,
the emergency shut off system
blocks the high voltage current
and stops the fuel pump to mini-
mize the risk of electrocution
and fuel leakage. If the emer-
gency shut off system activates,
your vehicle will not restart. To
restart the hybrid system, con-
tact your Toyota dealer.
A message is automatically dis-
played when a malfunction
occurs in the hybrid system or
an improper operation is
attempted.
If a warning message is shown
on the multi-information display,
read the message and follow the
NOTICE
■Hybrid battery (traction bat-
tery) air intake vents
●Make sure not to block the air
intake vents with anything, such
as a seat cover, plastic cover, or
luggage. If the vents become
blocked, the hybrid battery
(traction battery) input and out-
put may be restricted, leading to
a reduction in hybrid battery
(traction battery) output and a
malfunction.
●When dust etc. has accumu-
lated in the air intake vents,
clean them with a vacuum
cleaner to prevent the vents
from clogging.
●Do not get water or foreign
materials in the air intake vents
as this may cause a short circuit
and damage the hybrid battery
(traction battery).
●Do not carry large amounts of
water such as water cooler bot-
tles in the vehicle. If water spills
onto the hybrid battery (traction
battery), the battery may be
damaged. Have the vehicle
inspected by your Toyota
dealer.
●There are filters installed to the
air intake vents. When the filters
remain noticeably dirty even
after cleaning the air intake
vents, filters cleaning or
replacement is recommended.
For information regarding filters
cleaning or replacement, refer
to P.444.
●If “Maintenance Required for
Traction Battery Cooling Parts
See Owner’s Manual” is shown
on the multi-information dis-
play, the air intake vents and fil-
ters may be clogged. Refer to
P.443for information on how to
clean the air intake vents.
Emergency shut off sys-
tem
Hybrid warning message