2021 TOYOTA TUNDRA child lock

594What to do if... (Troubleshooting)
What to do if... (Troubleshooting)
●If you lose your keys or mechanical keys, new genuine mechanical keys
can be made by your Toyota dealer. ( P. 123)
●If you lose your keys or electronic keys, the risk of vehicle t heft increases
significantly. Contact your Toyota dealer immediately. ( P. 126)
●Is the wireless key battery weak or depleted? (P. 451)
●Vehicles with a smart key system:
Is the engine switch in ON?
When locking the doors, turn the engine switch off. ( P. 220)
●Vehicles with a smart key system:
Is the electronic key left inside the vehicle?
When locking the doors, make sure that you have the electronic key on
your person.
●The function may not operate properly due to the condition of t he radio
wave. ( P. 123)
●Is the child-protector lock set?
The rear door cannot be opened from inside the vehicle when the lock is
set. Open the rear door from outside and then unlock the child-protector
lock. ( P. 131)
If you have a problem, check the following before contacting
your Toyota dealer.
The doors cannot be locked, unlocked, opened or closed
You lose your keys
The doors cannot be locked or unlocked
The rear door cannot be opened

598Alphabetical index
Alphabetical index
A/C .................................... 340, 347Air conditioning filter ............. 448
Automatic air conditioning system ......... ....................... 347
Manual air conditioning system ......... ....................... 340
ABS (Anti-lock Brake
System) .................................. 320 Function ................................ 320
Warning light ......................... 486
Air conditioning filter .............. 448
Air conditioning system ............................ 340, 347
Air conditioning filter ............. 448
Automatic air conditioning system ......... ....................... 347
Manual air conditioning system ......... ....................... 340
Airbags ....................................... 40
Airbag operating conditions .... 49
Airbag precautions for your child ......................... 44
Airbag warning light .............. 485
Correct driving posture ........... 32
Curtain shield airbag operating conditions ............. 49
Curtain shield airbag precautions ........................... 45
Front passenger occupant classification syst em............. 53
General airbag precautions .... 44
Locations of airbags................ 40 Modification and disposal
of airbags ............................. 47
Side airbag operating
conditions ............................. 49
Side airbag precautions .......... 45
Side and curtain shield airbags operating
conditions ............................. 49
Side and curtain shield airbags precautions .............. 45
SRS airbags ........................... 40
Alarm Alarm ...................................... 95
Warning buzzer ............ 485, 493
Anchor brackets ........................ 63
Antennas (smart key system) ............... 138
Anti-lock Brake System (ABS) ...................................... 320
Function ................................ 320
Warning light......................... 486
Armrest..................................... 383
Assist grips .............................. 384
Audio input
*
Audio remote control switches*
AUX port*
AUTO LSD system................... 318
Automatic High Beam ............. 239
Automatic light control
system.................................... 234
Automatic transmission
Automatic transmission ........ 225
If the shift lever cannot be shifted from P ..................... 229
TOW/HAUL switch................ 228
AUX port
*
Auxiliary boxes ........................ 373
A

600Alphabetical index
Child safety ................................ 58Airbag precautions .................. 44
Battery precautions ............... 527
Child restraint system ............. 59
How your child should wear the seat belt ................. 36
Installing child restraints ......... 63
Moon roof precautions .......... 182
Power back window precautions ......................... 178
Power window lock switch .... 172
Power window precautions ... 174
Rear door child-protector ...... 131
Removed wireless remote control battery
precautions ......................... 453
Seat belt extender precautions ........................... 39
Seat belt precautions .............. 62
Seat heater precautions........ 355
Child-protectors....................... 131
Cleaning ........................... 400, 403 Aluminum wheels.................. 400
Exterior ................................. 400
Interior................................... 403
Seat belts .............................. 404
Clock
*
Compass .................................. 394
Condenser ................................ 420
Console box ............................. 363
Coolant ..................................... 418 Capacity ................................ 545
Checking ............................... 418
Preparing and checking before winter....................... 331
Cooling system ........................ 418 Engine overheating ............... 529
CRS ............................................. 59 Cruise control
Cruise control ....................... 294
Dynamic radar cruise control ...................... 280
Cup holders ............................. 370
Curtain shield airbags............... 41
Customizable features ............ 564
Daytime running light system.................................... 237
Deck hooks .............................. 377
Defogger Back window................. 342, 349
Outside rear view mirrors ........................ 342, 349
Windshield .................... 342, 349
Differential................................ 546
Dimensions .............................. 536
Dinghy towing.......................... 216
Display Drive information .................. 111
Dynamic radar
cruise control ...................... 280
LDA
(Lane Departure Alert) ....... 272
Multi-information display ....... 110
Trip information..................... 110
Warning message................. 493
Do-it-yourself maintenance .... 412
Door lock .................................. 127 Doors .................................... 127
Key ....................................... 127
Smart key system ................. 128
Wireless remote control ........ 128
D

601Alphabetical index
Doors ........................................ 127Automatic door locking and unlocking system ......... 132
Door glasses ......................... 172
Door lock............................... 130
Open door warning message ............................. 494
Outside rear view mirrors...... 167
Rear door child-protector ...... 131
Side doors............................. 127
Driver’s seat position memory .................................. 152
Drive-Start Control .................. 185
Driving ...................................... 184
Break-in tips .......................... 186
Correct driving posture ........... 32
Driving assist system ............ 320
Procedures ........................... 184
Winter drive tips .................... 331
Dynamic radar cruise control ........................ 280 Constant speed
control mode....................... 285
Vehicle-to-vehicle distance control mode ........ 287 EDR (Event data recorder)........ 11
Emergency, in case of
If the engine will not start ...... 521
If the vehicle is trappedin rising water ..................... 477
If the vehicle has discharged battery ................................ 525
If the warning buzzer sounds................................ 485
If the warning light turns
on ....................................... 485
If the warning message is displayed ........................ 493
If you have a flat tire ............. 506
If you lose your keys ............. 123
If you think something is wrong .............................. 483
If your vehicle becomes stuck ................................... 532
If your vehicle has to be stopped in an emergency ... 475
If your vehicle needs
to be towed......................... 478
If your vehicle overheats....... 529
Emergency flashers ................ 474
Engine
“ACC” position ...................... 217
Compartment ........................ 415
Engine switch ....................... 217
Hood ..................................... 414
How to start the engine......... 217
Identification number ............ 541
If the engine will not start ...... 521
Ignition switch (engine switch) ................... 217
Immobilizer system .. ............... 85
Overheating .......................... 529E
*: Refer to “NAVIGATION AND MULTIMEDIA SYSTEM OWNER
’S MANUAL”.

606Alphabetical index
Parking assist sensors (intuitive parking assist) ....... 298
Parking brake ........................... 233 Operation .............................. 233
Parking brake engaged
warning buzzer ................... 485
Parking brake engaged
warning message ............... 495
Parking lights ........................... 234 Light switch ........................... 234
Replacing light bulbs..... 463, 470
Wattage ................................ 550
PCS
(Pre-Collision System) .......... 260 Pre-collision brake assist ...... 261
Pre-collision braking ............. 261
PCS warning ......................... 261
Warning light ......................... 488
Warning message ................. 493
Pen holder ................................ 367
Personal lights ......................... 358 Light switch ........................... 357
Wattage ................................ 550
Power back window ................ 176
Power easy access system .... 152
Power outlets ........................... 379
Power steering fluid ................ 421
Power windows........................ 172 Jam protection function......... 173
Operation .............................. 172
Window lock switch............... 172
Pre-Collision System (PCS) ...................................... 260 Radar cruise control
(dynamic radar
cruise control) ....................... 280
Radiator .................................... 420
Radio
*
Rear personal lights ................ 358
Rear seat
Adjustment precautions ........ 151
Child seats/child restraint system installation . ............... 63
Cleaning ............................... 403
Head restraints ..................... 157
Raising the bottom cushion ............................... 150
Rear side marker lights........... 234 Light switch ........................... 234
Replacing light bulbs ............ 468
Wattage ................................ 550
Rear step bumper .................... 137
Rear turn signal lights ............ 232
Replacing light bulbs ............ 468
Turn signal lever ................... 232
Wattage ................................ 550
Rear view mirror Inside rear view mirror .......... 164
Outside rear view mirrors ..... 167
Rear view monitor system
*
Refueling .................................. 248 Capacity................................ 542
Fuel types ............................. 542
Opening the fuel tank cap..... 250
Replacing Fuses .................................... 454
Light bulbs ............................ 457
Tires...................................... 506
Wireless remote control battery ................................ 451
Reporting safety defects for U.S. owners...................... 576
Resetting the message
indicating maintenance
is required.............................. 407
PR

607Alphabetical index
Safety connect ........................... 79
Seat belts.................................... 34Adjusting the seat belt ............ 35
Automatic Locking Retractor............................... 36
Child restra int system
installation ............................ 63
Cleaning and maintaining the seat belt ........................ 404
Emergency Locking
Retractor............................... 36
How to wear your seat belt ..... 34
How your child should wear the seat belt .......................... 36
Pregnant women, proper seat belt use ......................... 37
Reminder light and buzzer .... 486
Seat belt extender................... 36
Seat belt pretensioners ........... 35
SRS warning light ................. 485
Seat heaters ............................. 354
Seat position memory ............. 152
Seat ventilators ........................ 354
Seating capacity ...................... 195
Seats, Front .............................. 147 Adjustment ............................ 147
Adjustment precautions ........ 149
Child seats/child restraint system installation . ............... 63
Cleaning................................ 403
Driving position memory ....... 152
Head restraints ..................... 157
Power easy access system ......... ....................... 152
Properly sitting in the seat ...... 32
Seat heaters ......................... 354
Seat position memory ........... 152
Seat ventilators ..................... 354 Seats, Rear ............................... 150
Adjustment precautions ........ 151
Child seats/child restraint system installation . ............... 63
Cleaning ............................... 403
Head restraints ..................... 157
Raising the bottom cushion ............................... 150
Sensor Automatic headlight
system .......... ...................... 237
Automatic High Beam system .......... ...................... 239
Inside rear view mirror .......... 166
Intuitive parking assist .......... 298
LDA (Lane Departure Alert) ....... 272
Radar sensor ........................ 253
Service reminder indicators ... 100
Shift lever ................................. 225
Automatic transmission ........ 225
If the shift lever cannot be shifted from P .... 229
Shift lock system ..................... 229
Side airbags ............................... 41
Side doors ................................ 127
Side marker lights ................... 234 Light switch ........................... 234
Replacing light bulbs .... 464, 468
Wattage ................................ 550
Side mirrors ............................. 167
Adjusting and folding ............ 167
BSM (Blind spot monitor)...... 305
Mirror position memory ......... 152
Side turn signal lights ............. 232 Replacing light bulbs .... 464, 468
Turn signal lever ................... 232
Wattage ................................ 550
S
*: Refer to “NAVIGATION AND MULTIMEDIA SYSTEM OWNER
’S MANUAL”.