2023 TOYOTA TUNDRA HYBRID child seat

631-2. Child safety
Owners Manual_USA_M0C052_en
1
For safety and security
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 Place the child restraint sys-
tem on the rear seat facing
the rear of the vehicle.
2 Run the seat belt through the
child restraint system and
insert the plate into the
buckle. Make sure that the
belt is not twisted. 3
Fully extend the shoulder belt
and allow it to retract to put it
in lock mode. In lock mode,
the belt cannot be extended.
4 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.
5 After installing the child
restraint system, rock it back
and forth to ensure that it is
installed securely. ( P.66)
■Forward-facing  Convert-
ible seat
Before installing the child
restraint to the rear seat:

641-2. Child safety
Owners Manual_USA_M0C052_en
If the child restraint has a top
tether strap, install the top tether
strap, and then install the child
restraint system. (P. 5 8 ) A l s o ,
follow the child restraint manu-
facturer’s operation manual
regarding the installation.
1 Adjust the seat
When using the front passenger
seat: If installing t he child restraint
system to the front passenger seat
is unavoidable, refer to P.55 for
front passenger seat adjustment.
2 If the head restraint interferes
with the child restraint system
installation and the head
restraint can be removed,
remove the head restraint.
( P.141)
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

651-2. Child safety
Owners Manual_USA_M0C052_en
1
For safety and security
check that it cannot be extended.
7 If the child restraint has a top
tether strap, tighten the top
tether strap. ( P. 5 8 )
8 After installing the child
restraint system, rock it back
and forth to ensure that it is
installed securely. ( P.66)
■Booster seat
1 If installing the child restraint
system to the front passen-
ger seat is unavoidable, refer
to P.55 for front passenger
seat adjustment.
2 High back type: If the head
restraint interferes with your
child restraint system, and
the head restraint can be
removed, remove the head
restraint. ( P.141) 3
Place the child restraint sys-
tem on the seat facing the
front of the vehicle.
Booster type
High back type
4 Sit the child in the child
restraint system. Fit the seat
belt to the child restraint sys-
tem according to the manu-
facturer’s instructions and
insert the plate into the
buckle. Make sure that the
belt is not twisted.
Check that the sh oulder belt is cor-
rectly positioned over the child’s
shoulder and that the lap belt is as

661-2. Child safety
Owners Manual_USA_M0C052_enlow as possible. (
P.29)
■Removing a child restraint
system installed with a seat
belt
Press the buckle release button
and fully retract the seat belt.
When releasing the buckle, the
child restraint system may spring
up due to the rebound of the seat
cushion. Release the buckle while
holding down the child restraint
system.
Since the seat belt automatically
reels itself, slowly return it to the
stowing position.
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.
●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 seat 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.

671-2. Child safety
Owners Manual_USA_M0C052_en
1
For safety and security
WARNING
●When installing a child restraint
system in the rear center seat,
adjust both seat cushions to the
same position and align both
seatbacks at the same angle.
Otherwise, the child restraint
system cannot be securely
restrained and t his may cause
death or serious injuries in the
event of sudden braking, sud-
den swerving or an accident.
●If the seat is adjusted, reconfirm
the security of the child restraint
system.
■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.31,
33)
■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.

1153-2. Opening, closing and locking the doors and tailgate
Owners Manual_USA_M0C052_en
3
Before driving
■If the smart key system or the
wireless remote control does
not operate properly
Use the mechanical key to lock and
unlock the doors. ( P.527)
Replace the key battery with a new
one if it is depleted. ( P.484)
■If the 12-volt battery is dis-
charged
The doors cannot be locked and
unlocked using the smart key sys-
tem or wireless remote control. Lock
or unlock the doors using the
mechanical key. ( P.527)
■Rear seat reminder function
●In order to remind you not to for-
get luggage, etc., in the rear seat,
when the power switch is turned to
OFF after any of the following con-
ditions are met, a buzzer will
sound and a message will be dis-
played on the multi-information
display for approximately 6 sec-
onds.
• The hybrid system is started within 10 minutes after opening
and closing a rear door.
• A rear door has been opened and closed after the hybrid system
was started.
However, if a rear door is opened
and then closed within approxi-
mately 2 seconds , the rear seat
reminder function may not operate.
●The rear seat reminder function
determines that luggage, etc., has
been placed in a rear seat based
on opening and closing of a rear
door. Therefore, depending on the
situation, the rear seat reminder
function may not operate and you
may still forget luggage, etc., in
the rear seat, or it may operate
unnecessarily.
●The rear seat reminder function
can be enabled/disabled.
(  P.561)
■Customization
Some functions can be customized. (
 P.561)
WARNING
■To prevent an accident
Observe the following precautions
while driving the vehicle.
Failure to do so may result in a
door opening and an occupant
falling out of the vehi cle, resulting
in death or serious injury.
●Ensure that all doors are prop-
erly closed and locked.
●Do not pull the inside handle of
the doors while driving.
Be especially careful for the front
doors, as the doors may be
opened even if the inside lock but-
tons are in locked position.
●Set the rear door child-protector
locks when children are seated
in the rear seats.
■When opening or closing a
door
Check the surroundings of the
vehicle such as wh ether the vehi-
cle is on an incline, whether there
is enough space for a door to
open and whether a strong wind
is blowing. When opening or clos-
ing the door, hold the door handle
tightly to prepare for any unpre-
dictable movement.

2084-2. Driving procedures
Owners Manual_USA_M0C052_en
Turns the brake hold system on
The brake hold standby indica-
tor (green) comes on. While
the system is holding the brake,
the brake hold operated indica-
tor (yellow) comes on.
■Brake hold system operating
conditions
The brake hold system cannot be
turned on in the following condi-
tions:
●The driver’s door is not closed.
●The driver is not wearing the seat
WARNING
■When parking the vehicle
Do not leave a child in the vehicle
alone. The parking brake may be
released unintentionally by a child
and there is the danger of the
vehicle moving that may lead to
an accident resulting in death or
serious injury.
■Parking brake switch
Do not set any o bjects near the
parking brake switch. Objects
may interfere with the switch and
may lead the parking brake to
unexpectedly operate.
NOTICE
■When parking the vehicle
Before you leave the vehicle, shift
the shift lever to P, set the parking
brake and make sure that the
vehicle does not move.
■When the system malfunc-
tions
Stop the vehicle in a safe place
and check the warning messages.
■When the parking brake can-
not be released due to a mal-
function
Driving the vehicle with the park-
ing brake set will lead to brake
components overheating, which
may affect braking performance
and increase brake wear. Have
the vehicle inspected by your Toy-
ota dealer immediately if this
occurs.
Brake Hold
The brake hold system
keeps the brake applied
when the shift lever is in D,
S or N with the system on
and the brake pedal has
been depressed to stop the
vehicle. The system
releases the brake when the
accelerator pedal is
depressed with the shift
lever in D or S to allow
smooth start off.
Enabling the system

2404-5. Using the driving support systems
Owners Manual_USA_M0C052_enshaped, such as a tractor or side
car
• If a vehicle ahead is a child sized
bicycle, a bicycle that is carrying a
large load, a bicycle ridden by
more than one person, or a
uniquely shaped bicycle (bicycle
with a child seat, tandem bicycle,
etc.)
• If a pedestrian/or t he riding height
of a bicyclist ahead is shorter than
approximately 3.2 ft. (1 m) or taller
than approximately 6.5 ft. (2 m)
• If a pedestrian/bicyclist is wearing oversized clothing (a rain coat,
long skirt, etc.), making their sil-
houette obscure
• If a pedestrian is bending forward
or squatting or bicyclist is bending
forward
• If a pedestrian/bicyclist is moving
fast
• If a pedestrian is pushing a stroller, wheelchair, bicycle or
other vehicle
• When driving in inclement weather such as heavy rain, fog, snow or a
sandstorm
• When driving through steam or smoke
• When the surrounding area is dim, such as at dawn or dusk, or while
at night or in a t unnel, making a
detectable object appear to be
nearly the same color as its sur-
roundings
• When driving in a place where the surrounding brightness changes
suddenly, such as at the entrance
or exit of a tunnel
• After the hybrid system has started the vehicle has not been
driven for a certain amount of time
• While making a left/right turn and for a few seconds after making a
left/right turn
• While driving on a curve and for a
few seconds after driving on a
curve
• If your vehicle is skidding
• If the front of the vehicle is raised or lowered • If the wheels are misaligned
• If a wiper blade is blocking the
front camera
• The vehicle is being driven at extremely high speeds
• When driving on a hill
• If the radar sensor or front camera
is misaligned
• When driving in a traffic lane sep-
arated by more than one lane
where oncoming vehicles are driv-
ing while making a right/left turn
• When largely out of place with the opposite facing targeted oncom-
ing vehicle during a right/left turn
• While making a right/left turn,
when a pedestrian approaches
from behind or side of your vehicle
• When the vehicle is lifted up using an aftermarket lift kit
• When the vehicle is lifted up more than 4 in. (101 mm)
●In addition to the above, in some
situations, such as the following,
the emergency steering assist