2021 TOYOTA TUNDRA immobilizer

TABLE OF CONTENTS2
For your information....................... 8
Reading this manual .................... 14
How to search .............................. 15
Pictorial index .............................. 16
1-1. For safe useBefore driving ...................... 30
For safe driving ................... 32
Seat belts ............................ 34
SRS airbags ........................ 40
Front passenger occupant classification system ......... 53
Safety information for children ........................ 58
Child restraint systems ........ 59
Installing child restraints ...... 63
Exhaust gas precautions ..... 78
1-2. Emergency assistance Safety Connect.................... 79
1-3. Theft deterrent system Engine immobilizer system............................... 85
Alarm ................................... 95
2. Instrument cluster Warning lights and indicators......................... 100
Gauges and meters........... 105
Multi-information display ... 110
Fuel consumption information ...................... 117 3-1. Key information
Keys................................... 120
3-2. Opening, closing and locking the doors
Side doors ......................... 127
Tailgate .............................. 133
Smart key system .............. 138
3-3. Adjusting the seats Front seats......................... 147
Rear seats ......................... 150
Driving position memory (driver’s seat)................... 152
Head restraints .................. 157
3-4. Adjusting the steering wheel and mirrors
Steering wheel ................... 161
Inside rear view mirror ....... 164
Outside rear view mirrors ............................. 167
3-5. Opening, closing the windows and moon roof
Power windows.................. 172
Back window...................... 175
Power back window ........... 176
Moon roof .......................... 179
1For safety and security
2Instrument cluster
3Operation of
each component

29
For safety and security1
1-1. For safe useBefore driving ...................... 30
For safe driving ................... 32
Seat belts ............................ 34
SRS airbags ........................ 40
Front passenger occupant classification system ......... 53
Safety information for children ........................ 58
Child restraint systems........ 59
Installing child restraints...... 63
Exhaust gas precautions..... 78
1-2. Emergency assistance Safety Connect ................... 79
1-3. Theft deterrent system Engine immobilizer system .............................. 85
Alarm................................... 95

851-3. Theft deterrent system
1
For safety and security
Engine immobilizer system
Vehicles without a smart key sys-
tem:
The indicator light flashes after
the key has been removed from
the engine switch to indicate that
the system is operating.
The indicator light stops flashing
after the registered key has been
inserted into the engine switch to
indicate that the system has been
canceled.
Vehicles with a smart key system:
The indicator light flashes aft er the engine switch has been tu rned off
to indicate that the system is operating.
The indicator light stops flashi ng after the engine switch has been
turned to ACC or ON to indicate t hat the system has been canceled.
The vehicle’s keys ha ve built-in transponder chips that prevent
the engine from starting if a key has not been previously regis -
tered in the vehicle’s on-board computer.
Never leave the keys inside the vehicle when you leave the vehi-
cle.
This system is designed to help prevent vehicle theft but does
not guarantee absolute security against all vehicle thefts.

861-3. Theft deterrent system
■System maintenance
The vehicle has a maintenance-free type engine immobilizer syst em.
■ Conditions that may cause the system to malfunction
●If the grip portion of the key is in contact with a metallic ob ject
● If the key is in close proximity to or touching a key to the security system
(key with a built-in transponder chip) of another vehicle
■ Certifications for the engine immobilizer system
For vehicles sold in the U.S.A.
FCC ID: MOZRI-42BTY
This device complies with Part 15 of the FCC Rules. Operation i s subject to
the following two conditions: (1) this device may not cause har mful interfer-
ence, and (2) this device must accept any interference received, including
interference that may cause undesired operation.
For vehicles sold in Canada
This device complied with RSS-210 of Industry Canada.
Operation is subject to the following two conditions: (1) this device may not
cause interference, and (2) this device must accept any interfe rence, includ-
ing interference that may cause undesired operation of the devi ce.

941-3. Theft deterrent system
WARNING
■Certifications for the immobilizer system
Changes or modifications not expressly approved by the party re sponsible
for compliance could void the user’s authority to operate the equipment.
NOTICE
■ To ensure the system operates correctly
Do not modify or remove the system. If modified or removed, the proper
operation of the system cannot be guaranteed.

2174-2. Driving procedures
4
Driving
Engine (ignition) switch (vehicles without a
smart key system)
Check that the parking brake is set.
Check that the shift lever is set in P.
Firmly depress the brake pedal.
Turn the engine switch to the “S TART” position to start the engine.
OFF (“LOCK” position)
The steering wheel is locked and
the key can be removed. (The key
can be removed only when the
shift lever is in P.)
ACC (“ACC” position)
Some electrical components such
as the audio system can be used.
ON (“ON” position)
All electrical components can be used.
START (“START” position)
For starting the engine.
■ Turning the key from ACC to OFF
Shift the shift lever to P.
■ If the engine does not start
The engine immobilizer system may not have been deactivated. ( P. 85)
Contact your Toyota dealer.
Starting the engine
Changing the engine switch positions
1
2
3
4
1
2
Push in the key and turn it to OFF.
3
4
1
2

2224-2. Driving procedures
■Electronic key battery depletion
P. 124
■ Conditions affecting operation
P. 142
■ Note for the entry function
P. 142
■ If the engine does not start
●The engine immobilizer system may not have been deactivated. ( P. 85)
Contact your Toyota dealer.
● Check that the shift lever is securely set in P. The engine may not start if the
shift lever is displaced out of P. “Shift to P Position” will b e displayed on the
multi-information display.
■ Steering lock
After turning the engine switch off and opening and closing the doors, the
steering wheel will be locked due to the steering lock function . Operating the
engine switch again automatically cancels the steering lock.
■ When the steering lock cannot be released
■ Steering lock motor overheating prevention
To prevent the steering lock motor from overheating, operation of the motor
may be suspended if the engine is turned on and off repeatedly in a short
period of time. In this case, refrain from running the engine. After about
10 seconds, the steering lock motor will resume functioning.
■ When “Smart Entry & Start System Check” is displayed on the multi-
information display
The system may be malfunctioning. Have the vehicle inspected by your
Toyota dealer immediately.
■ If the electronic key battery is depleted
P. 451 A message will be displayed on the multi-
information display.
Check that the shift lever is in P. Press the
engine switch while turning the steering
wheel left and right.

521
7
When trouble arises
7-2. Steps to take in an emergency
If the engine will not star t
One of the following may be the cause of the problem:
● There may not be sufficient f uel in the vehicle’s tank.
Refuel the vehicle.
● The engine may be flooded.
Try to restart the engine again following correct starting proc edures.
(  P. 217)
● There may be a malf unction in the engine immobilizer system.
(  P. 8 5 )
One of the following may be the cause of the problem:
● The battery may be discharged. ( P. 525)
● The battery terminal connecti ons may be loose or corroded.
The engine starting system may be malfunctioning due to an elec trical
problem such as an open circuit or a blown fuse. However, an in terim
measure is available to start the engine. ( P. 522)
If the engine will not start eve n though correct starting proce -
dures are being followed ( P. 217), consider each of the follow-
ing points.
The engine will not start even t hough the starter motor operates
normally.
The starter motor turns over slowly, the interior lights and he ad-
lights are dim, or the horn does not sound or sounds at a low
volume.
The starter motor does not turn over (vehicles with a smart key
system)