2021 TOYOTA TUNDRA child lock

681-1. For safe use
While pushing the child
restraint system down 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 point where there
is no slack in the belt, pull the
belt to check that it cannot be
extended.
■
Forward-facing Convertible seat
Place the child restraint sys-
tem on the seat facing the
front of the vehicle.
Run the seat belt through the
child restraint system and
insert the plate into the
buckle. Make sure that the
belt is not twisted.
Fully extend the shoulder belt
and allow it to retract to put it
in lock mode. In lock mode,
the belt cannot be extended.
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761-1. For safe use
■Laws and regulations pertaining to anchorages
The LATCH system conforms to FMVSS225 or CMVSS210.2.
Child restraint systems conforming to FMVSS213 or CMVSS213 spec ifica-
tions can be used.
This vehicle is designed to conform to the SAE J1819.
WARNING
■ 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. 36)
■ When installing a child restraint system
Follow the directions given in the child restraint system insta llation manual
and fix the child restraint system securely in place.
If the child restraint system is not correctly fixed in place, the child or other
passengers may be seriously injured or even killed in the event of a sudden
braking or an accident.
● 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.
● Only put a forward-facing child restraint
system on the front seat when unavoid-
able. When installing a forward-facing
child restraint system on the front pas-
senger seat, move the seat as far back
as possible even if the “AIR BAG OFF”
indicator light is illuminated. Failure to
do so may result in death or serious
injury if the airbags deploy (inflate).

771-1. For safe use
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For safety and security
WARNING
■When installing a child restraint system
● When a booster seat is installed, always ensure that the should er 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. Failure to do so may result in death or serious injur y in the event
of an accident or a sudden braking.
● 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.
● Follow all installation instructions provided by the child rest raint 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 ef fectiveness. 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 different
position. Failure to do so may result in death or serious injur y.
If the seat is adjusted, reconfirm the security of the child re straint system.
■ 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 a sud-
den braking, sudden swerving or an accident.
■ To correctly attach a child restraint system to the anchors
When using the LATCH anchors, be sure that there are no foreign objects
around the anchors and that the seat belt is not caught behind the child
restraint system. Make sure the child restraint system is secur ely attached,
or it may cause death or serious injury to the child or other p assengers in
the event of a sudden braking or an accident.

1313-2. Opening, closing and locking the doors
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Operation of each component
Vehicles without a smart key system
Move the inside lock bu tton to the lock position.
Close the door.
Vehicles with power door lock system:
The door cannot be locked if either of the front doors is open and the
key is in the engine switch.
Vehicles with a smart key system
The door cannot be locked if the engine switch is in ACC or ON, or the
electronic key is left inside the vehicle.
The key may not be detected correctly and the door may be locke d.
The door cannot be opened from
inside the vehicle when the lock is
set.
Unlock
Lock
These locks can be set to prevent
children from opening the rear
doors. Push down on each rear
door switch to lock both rear doors.
Locking the front doors from the outside without a key
Rear door child-protector lock
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1323-2. Opening, closing and locking the doors
The following functions can be set or canceled:
■Customization that can be configured at Toyota dealer
Settings (e.g. unlocking function using a key) can be changed.
(Customizable features: P. 564)
Automatic door locking and unlocking systems
FunctionOperation
Shift position linked door locking
functionShifting the shift lever out of P locks
all the doors.
Shift position linked door unlocking
functionShifting the shift lever to P unlocks
all the doors.
Speed linked door locking function
All the doors are locked when the
vehicle speed is approximately 12 mph
(20 km/h) or higher.
Driver’s door linked door unlocking
function
All the doors are unlocked when the
driver’s door is opened within 10 sec-
onds after turning the engine switch to
OFF.
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 throwing out
of the vehicle, resulting in death or serious injury.
● Ensure that all doors are properly 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 buttons are in locked position.
● Double Cab and CrewMax models: Set the rear door child-protecto r locks
when children are seated in the rear seats.

1723-5. Opening, closing the windows and moon roof
Power windows
The power windows can be opened and closed using the switches.
Operating the switch moves the windows as follows:
Ty p e A
Closing
Opening
One-touch opening
* (driver’s
window only)
*: To stop the window partway, oper- ate the switch in the opposite direc-
tion.
Ty p e B
Closing
One-touch closing
* (front seat
windows)
Opening
One-touch opening
* (front seat
windows)
*: To stop the window partway, oper- ate the switch in the opposite direc-
tion.
Press the switch down to lock the
passenger window switches.
Use this switch to prevent children
from accidentally opening or clos-
ing a passenger window.
Opening and closing procedures
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Window lock switch

1743-5. Opening, closing the windows and moon roof
WARNING
Observe the following precautions.
Failure to do so may result in death or serious injury.
■Closing the windows
● The driver is responsible for all the power window operations, including the
operation for the passengers. In order to prevent accidental op eration,
especially by a child, do not let a child operate the power win dows. It is
possible for children and other passengers to have body parts c aught in
the power window. Also, when riding with a child, it is recomme nded to use
the window lock switch. ( P. 172)
● Check to make sure that all passengers do not have any part of their body
in a position where it could be caught when a window is being o perated.
● When exiting the vehicle, turn the engine switch off, carry the key and exit
the vehicle along with the child. There may be accidental operation, due to
mischief, etc., that may possibly lead to an accident.
■ Jam protection function (type B only)
● Never use any part of your body to intentionally activate the j am protection
function.
● The jam protection function may not work if something gets caught just
before the window fully closes.

5277-2. Steps to take in an emergency
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When trouble arises
■When recharging or replacing the battery
●Vehicles with a smart key system: In some cases, it may not be possible to
unlock the doors using the smart key system when the battery is dis-
charged. Use the wireless remote control or the mechanical key to lock or
unlock the doors.
● The engine may not start on the first attempt after the battery has recharged
but will start normally after the second attempt. This is not a malfunction.
● Vehicles with a smart key system: The engine switch mode is mem orized by
the vehicle. When the battery is reconnected, the system will r eturn to the
mode it was in before the battery was discharged. Before discon necting the
battery, turn the engine switch off.
If you are unsure what mode the engine switch was in before the battery dis-
charged, be especially careful when reconnecting the battery.
WARNING
■ Avoiding battery fires or explosions
Observe the following precautions to prevent accidentally ignit ing the flam-
mable gas that may be emitted from the battery:
● Make sure each jumper cable is connected to the correct terminal and that
it is not unintentionally in contact with any other than the in tended terminal.
● Do not allow the + and - clamps of the jumper cables to come into contact
with each other.
● Do not smoke, use matches, cigarette lighters or allow open fla me near
the battery.
■ Battery precautions
The battery contains poisonous and corrosive acidic electrolyte , while
related parts contain lead and lead compounds. Observe the foll owing pre-
cautions when handling the battery:
● When working with the battery, always wear safety glasses and t ake care
not to allow any battery fluids (acid) to come into contact wit h skin, clothing
or the vehicle body.
● Do not lean over the battery.
● In the event that battery fluid comes into contact with the skin or eyes,
immediately wash the affected area with water and seek medical attention.
Place a wet sponge or cloth over the affected area until medica l attention
can be received.
● Always wash your hands after handling the battery support, term inals, and
other battery-related parts.
● Do not allow children near the battery.