2021 TOYOTA 4RUNNER brake light

5057-2. Steps to take in an emergency
7
When trouble arises
4RUNNER (U)
One of the following may be the cause of the problem:
● One or both of the battery t erminals may be disconnected.
● The battery may be discharged. ( P. 510)
● There may be a malfunction in the steering lock system (vehicles
with a smart key system).
Contact your Toyota dealer if the problem cannot be repaired, o r if repair
procedures are unknown.
When the engine does not start, the following steps can be used as an
interim measure to start the engine if the engine switch is fun ctioning
normally:
Set the parking brake.
Shift the shift lever to P.
Turn the engine switch to ACCESSORY mode.
Press and hold the engine switch for about 15 seconds while
depressing the brake pedal firmly.
Even if the engine can be start ed using the above steps, the sy stem
may be malfunctioning. Have the vehicle inspected by your Toyot a
dealer.
The starter motor does not turn over, the interior lights and h ead-
lights do not turn on, o r the horn does not sound.
Emergency start function (vehicles with a smart key system)
1
2
3
4

577What to do if... (Troubleshooting)
4RUNNER (U)
●The seat belt reminder light is flashing
Are the driver and the front passenger wearing the seat belts?
(P. 477)
●The brake system warning light is on
Is the parking brake released? ( P. 224)
●The open door warning indicator is on
Are all the doors closed? (P. 110, 131)
Depending on the situation, other types of warning buzzer may a lso sound.
( P. 474, 484)

●Did anyone inside the vehicle open a door during setting the al arm?
The sensor detects it and the alarm sounds. ( P. 79)
To stop the alarm, turn the engine switch to IGNITION ON mode ( vehicles
with a smart key system) or start the engine.
●Is the electronic key left inside the vehicle?
Check the message on the multi-information display.
●When a warning light turns on, refer to P. 474.
●When a warning light turns on or a warning message or indicator is dis-
played, refer to P. 474, 484.
A warning buzzer sounds during driving
An alarm is activated and the horn sounds
A warning buzzer sounds w hen leaving the vehicle
(vehicles with a smart key system)
A warning light turns on or a warning message is displayed

579
4RUNNER (U)
Alphabetical index
Alphabetical index
A/C .................................... 340, 347Air conditioning filter ............. 441
ABS (Anti-lock Brake System)...... 320
Function ................................ 320
Warning light ......................... 475
Active head restraints ............. 137
Active traction control ............ 300
Air conditioning filter .............. 441
Air conditioning
system ............................ 340, 347 Air conditioning filter ............. 441
Airbags ....................................... 35
Airbag operating conditions .... 42
Airbag precautions for your child ......................... 37
Airbag warning light .............. 475
Correct driving posture ........... 28
Curtain shield airbag operating conditions ............. 42
Curtain shield airbag precautions ........................... 39
Front passenger occupant classification syst em............. 46
General airbag precautions .... 37
Locations of airbags................ 35
Modification and disposal of airbags.............................. 41
Side airbag operating
conditions ............................. 42
Side airbag precautions .......... 37
Side and curtain shield airbags operating conditions ............. 42
Side and curtain shield airbags precautions .............. 37
SRS airbags............................ 35 Alarm .......................................... 79
Alarm ...................................... 79
Warning buzzer .................... 474
Anchor brackets ........................ 57
Antennas (smart key system) ............... 118
Anti-lock Brake System (ABS) ...................................... 320
Function ................................ 320
Warning light......................... 475
Armrest..................................... 383
Assist grip ................................ 383
Audio system
*
AUTO LSD system................... 302
Automatic air conditioning
system.................................... 347
Automatic High Beam ............. 230
Automatic light control
system.................................... 225
Automatic running boards ..... 128
Automatic transmission ......... 218
If the shift lever cannot be shifted from P .... 221
S mode ................................. 219
AUX port
*
Auxiliary boxes ........................ 364
A
*: Refer to the “NAVIGATION AND MULTIMEDIA SYSTEM OWNER’S MANUAL”.

580Alphabetical index
4RUNNER (U)
Back doorBack door.............................. 131
Back window ......................... 166
Smart key system ................. 118
Wireless remote control ........ 110
Back window ............................ 166
Back-up lights Replacing light bulbs............. 457
Wattage ................................ 529
Battery ...................................... 417
Battery checking ................... 417
If the vehicle battery is discharged ...................... 510
Preparing and checking before winter....................... 329
Warning light ......................... 474
Bottle holders .......................... 366
Brake Fluid ...................................... 414
Parking brake........................ 224
Warning light ......................... 474
Brake assist ............................. 320
Brake override system ............ 177
Break-in tips ............................. 178
Brightness control Instrument panel light
control................................... 89 Care .................................. 392, 395
Exterior ................................. 392
Interior .................................. 395
Seat belts.............................. 396
Wheels and wheel ornaments .......................... 393
Cargo capacity......................... 191
Cargo hooks ............................ 367
Cargo net hooks ...................... 368
Center differential lock ........... 296
Chains ...................................... 331
Child restraint system............... 53 Booster seats, definition ......... 54
Booster seats, installation....... 65
Convertible seats, definition ... 54
Convertible seats,
installation ............................ 62
Front passenger occupant classification syst em ............ 46
Infant seats, definition............. 54
Infant seats, installation .......... 62
Installing CRS with LATCH anchors ............ 59
Installing CRS with seat belts...................................... 62
Installing CRS
with top tether strap.............. 66
BC

582Alphabetical index
4RUNNER (U)
Driving ...................................... 176Break-in tips .......................... 178
Correct driving posture ........... 28
Driving assist systems .......... 320
Off-road precautions ............. 333
Procedures ........................... 176
Winter drive tips .................... 329
Dynamic radar cruise
control .................................... 272
Eco Driving Indicator ................ 97
EDR (Event data recorder) ........ 10
Electronic key .......................... 102 Battery-saving function ......... 121
If the electronic key does not operate properly ................. 507
Replacing the battery ............ 443
Emergency, in case of
If the electronic key does not operate
properly .............................. 507
If the engine will not start ...... 504
If the vehicle battery is discharged .......................... 510
If the warning buzzer sounds ................................ 474
If the warning light turns on ....................................... 474
If a warning message is displayed......................... 484
If you cannot operate
back door opener ............... 506
If you have a flat tire ............. 489
If you think something is wrong .............................. 472
If your vehicle becomes stuck ................................... 517
If your vehicle has to be stopped in an emergency ... 463
If your vehicle needs
to be towed ......................... 466
If your vehicle overheats ....... 514 Emergency flashers ................ 462
Engine
ACCESSORY mode ............. 213
Compartment ........................ 408
Engine switch ............... 209, 212
Hood ..................................... 407
How to start the engine ........................ 209, 212
Identification number ............ 521
If the engine will not start ...... 504
Ignition switch (engine switch) ........... 209, 212
Overheating .......................... 514
Engine coolant......................... 412
Capacity................................ 524
Checking............................... 412
Preparing and checking before winter ...................... 329
Engine coolant temperature gauge ....................................... 88
Engine immobilizer system ...... 76
Engine oil ................................. 410 Capacity................................ 523
Checking............................... 410
Preparing and checking
before winter ...................... 329
Engine switch .................. 209, 212
Event data recorder (EDR)........ 10
Flat tire ..................................... 489
Floor mats .................................. 26
Fluid
Automatic transmission ........ 527
Brake .................................... 527
Power steering...................... 528
Washer ................................. 420
Fog lights ................................. 234
Replacing light bulbs ............ 449
Switch ................................... 234
Wattage ................................ 529
Four-wheel drive system............................ 292, 296
E
F

586Alphabetical index
4RUNNER (U)
Multi Terrain ABS .................... 320
Multi-information display .......... 90Driving information .................. 93
Dynamic radar cruise control................................. 272
Language .............................. 555
LDA (Lane Departure Alert)........ 264
Outside temperature ............... 97
PCS (Pre-Collision System)........ 254
Settings ................................... 96
Warning messages ............... 484
Multi-terrain Select .................. 313
Navigation system
*
Noise from under vehicle............ 8
Odometer.................................... 88
Off-road precaution s ............... 333
Oil Engine oil .............................. 410
Opener Back door.............................. 132
Hood ..................................... 407
Outer foot lights....................... 357
Outside rear view mirrors ....... 160
Adjusting and folding ............ 160
Outside rear view mirror defoggers ......... 342, 349
Outside temperature display ...................................... 97
Overhead console ................... 364
Overheating, Engine................ 514 Parking brake........................... 224
Operation .............................. 224
Parking brake engaged warning buzzer ................... 474
PCS (Pre-Collision System).......... 254 Warning light......................... 214
Parking lights........................... 225 Light switch ........................... 225
Replacing light bulbs ............ 452
Wattage ................................ 529
Pen holder ................................ 365
Personal lights......................... 358
Power back window ................ 166 Jam protection function ........ 168
Operation .............................. 166
Power outlets ................... 374, 378
Power steering Fluid ...................................... 416
Warning light......................... 476
Power windows ....................... 162 Door lock linked
window operation ............... 164
Jam protection function ........ 163
Operation .............................. 162
Window lock switch .............. 162
N
O
P

591Alphabetical index
4RUNNER (U)
Warning buzzersBrake system ....... ................. 474
Downshifting ......................... 221
Intuitive parking assist .......... 285
Key reminder ................ 210, 479
Lane departure alert function ............................... 265
Open door ............................. 476
Open moon roof reminder..... 479
Pre-collision warning............. 254
Seat belt reminder ................ 477
Warning lights............................ 83 ABS....................................... 475
Automatic running boards
indicator light ...................... 476
Brake override system .......... 477
Brake system ....... ................. 474
Center differential lock indicator light ...................... 476
Charging system ................... 474
Drive-Start Control ................ 477
Four-wheel drive indicator light ...................... 476
KDSS .................................... 476
LDA indicator ........................ 478
Low engine oil pressure ........ 474
Low fuel level ........................ 477
Low speed four-wheel drive indicator light ...................... 476
Malfunction indicator lamp .... 475
Master warning light...... 478, 484
Multi-terrain Select indicator light ...................... 476
Open door ............................. 476
PCS ...................................... 478
Power steering ...................... 476
Rear differential lock indicator light ...................... 475
Seat belt reminder light ......... 477 Slip indicator ......................... 475
SRS ...................................... 475
Tire pressure ........................ 478
Unengaged “Park” ................ 476
Warning messages.................. 484
Washer ..................................... 236
Checking............................... 420
Preparing and checking before winter ...................... 329
Switch ........................... 236, 239
Washing and waxing ............... 392
Weight
Cargo capacity...................... 191
Load limits ............................ 191
Weight .................................. 520
Wheels ...................................... 439 Replacing wheels ................. 439
Size....................................... 528
Window glasses ...................... 162
Window lock switch ................ 162
Windows................................... 162 Power back window .............. 166
Power windows..................... 162
Rear window defogger ..................... 342, 349
Washer ......................... 236, 239
Windshield wiper
de-icer ............................ 342, 350
Windshield wipers ........... 236, 239 Intermittent wiper .................. 236
Winter driving tips ................... 329
Wireless remote control key .......................................... 103
Locking/Unlocking ................ 110
Replacing the battery............ 443
W
*: Refer to the “NAVIGATION AND MULTIMEDIA SYSTEM OWNER’S MANUAL”.