2021 TOYOTA TUNDRA lock

525
7
When trouble arises
7-2. Steps to take in an emergency
If the vehicle batter y is discharged
If you have a set of jumper (or booster) cables and a second ve hicle
with a 12-volt battery, you can jump start your vehicle by foll owing the
steps below.
Confirm that the key is being
carried.
When connecting the jumper (or
booster) cables, depending on the
situation, the alarm may activate
and the doors may lock. ( P. 96)
Open the hood. (P. 414)
Connect the jumper cables according to the following procedure:
Connect a positive jumper cable clamp to the positive (+) batte ry
terminal on your vehicle.
Connect the clamp on the other end of the positive cable to the
positive (+) battery termi nal on the second vehicle.
The following procedures may be used to start the engine if the
vehicle’s battery is discharged.
You can also call your Toyota de aler or a qualified repair shop.
1
2
3
1
2

5277-2. Steps to take in an emergency
7
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.

5418-1. Specifications
8
Vehicle specifications
■Vehicle identification number
The vehicle identification number (VIN) is the legal identifier for
your vehicle. This is the primary identification number for you r
Toyota. It is used in registering the ownership of your vehicle .
This number is stamped on the
top left of the instrument panel.
This number is also on the Cer-
tification Label.
■Engine number
The engine number is stamped
on the engine block as shown.
Vehicle identification

5688-2. Customization
■Trailer brake controller* ( P. 327)
*: If equipped
■
Door lock* (  P. 127)
*: If equipped
FunctionDefault settingCustomized
setting
TBC trailer type Electric
0-4999lb Electric
5000+ lbO—O
E-O-H
0-4999lb
E-O-H
5000+ lb
TBC OFF
123
FunctionDefault settingCustomized setting
Unlocking using a key Driver’s door
unlocked in one step, all doors
unlocked in two
steps All doors
unlocked in one step—— O
Speed-detecting auto-
matic door lock function On Off—O O
Shifting gears to position
other than P locks all
doors Off On
—O O
Shifting gears to P
unlocks all doors
On Off—O O
Opening the driver’s door
unlocks all doors Off On—O O
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5698-2. Customization
8
Vehicle specifications
■Smart key system and wireless remote control* ( P. 1 2 7 )
*: If equipped
■
Smart key system* (  P. 127, 138)
*: If equipped
FunctionDefault settingCustomized
setting
Operation signal
(Emergency flashers) On Off — O O
Operation signal
(Buzzer) On Off — — O
Operation buzzer volume Level 5 Off to level 7 O O O
Time elapsed before auto-
matic door lock function is
activated if door is not
opened after being
unlocked 60 seconds
Off
—O O
30 seconds
120 seconds
Open door warning
buzzerOnOff — —O
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FunctionDefault settingCustomized setting
Smart key systemOnOff——O
Number of permissible
times of continuous smart
lock Twice Unlimited — — O
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5708-2. Customization
■Wireless remote control* ( P. 1 2 8 )
*: If equipped
FunctionDefault settingCustomized
setting
Wireless remote control OnOff—— O
Unlocking operation Driver’s door
unlocked in one step, all doors
unlocked in two steps All doors
unlocked in
one step—O O
Automatic door lock func-
tion to be activated if door
is not opened after being
unlocked On Off
—— O
Time elapsed before auto-
matic door lock function is
activated if door is not
opened after being
unlocked60 seconds0 seconds
—O O30 seconds
120 seconds
Operation signal
(Emergency flashers) On Off
—O O
Operation signal
(Buzzer)On Off—— O
Panic function
OnOff—— O
Open door reminder
buzzer (When locking the
vehicle) On Off
—— O
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5728-2. Customization
■Illumination (P. 3 5 7 )
*: Vehicles with a smart key system
■
Seat Belt Reminder Buzzer ( P. 486)
FunctionDefault settingCustomized
setting
Time elapsed before lights
turn off 15 seconds7.5 seconds—O O30 seconds
Operation after the engine
is off On
Off
—— O
Operation when the doors
are unlocked On Off—— O
Operation when you
approach the vehicle with
the electronic key on your
person
*
On
Off — — O
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FunctionDefault settingCustomized
setting
Vehicle speed linked seat
belt reminder buzzerOnOff—— O
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5738-2. Customization
8
Vehicle specifications
■Vehicle customization
●When the speed-detecting automatic door lock function and shift position
linked door locking function (shifting gears to a position other than P locks
all doors) are both on, the door lock operates as follows.
• When shifting the shift lever to any position other than P, al l the doors will
be locked.
• If the vehicle is started with all the doors locked, the speed-detecting auto- matic door lock function would not operate.
• If the vehicle is started with any the door unlocked, the spee d-detecting
automatic door lock function will operate.
● When the doors remain closed after unlocking the doors and the automatic
door lock function (Time elapsed before the automatic door lock function is
activated if a door is not opened after being unlocked) activates, the signals
will be generated in accordance with operation signal (buzzers) and the
operation signal (emergency flashers) settings.
WARNING
■ During customization
As the engine needs to be running during customization, ensure that the
vehicle is parked in a place with adequate ventilation. In a closed area such
as a garage, exhaust gases including harmful carbon monoxide (CO) may
collect and enter the vehicle. This may lead to death or seriou s health haz-
ard.
NOTICE
■ During customization
To prevent battery discharge, ensure that the engine is running while cus-
tomizing features.