2020 TOYOTA 4RUNNER key battery

577What to do if... (Troubleshooting)
4RUNNER (U)
●Is the shift lever in P? (P. 209)
●Is the steering wheel unlocked? ( P. 209)
●Is the battery discharged? (P. 513)
●Did you press the engine switch while firmly depressing the bra ke pedal?
( P. 212)
●Is the shift lever in P? ( P. 215)
●Is the electronic key anywhere detectable inside the vehicle? ( P. 119)
●Is the steering wheel unlocked? (P. 215)
●Is the electronic key battery weak or depleted?
In this case, the engine can be started in a temporary way. ( P. 511)
●Is the battery discharged? (P. 513)
●Vehicles without a smart key system:
Is the engine switch in the “ON” position?
If you cannot release the shift lever by depressing the brake p edal with the
engine switch in the “ON” position. ( P. 221)
●Vehicles with a smart key system:
Is the engine switch in IGNITION ON mode?
If you cannot release the shift lever by depressing the brake p edal with the
engine switch in IGNITION ON mode. ( P. 221)
If you think something is wrong
The engine does not start
(vehicles without a smart key system)
The engine does not start
(vehicles with a smart key system)
The shift lever cannot be shifted from P even if you depress
the brake pedal

582Alphabetical 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............. 460
Wattage ................................ 531
Battery ...................................... 415
Battery checking ................... 415
If the vehicle battery is discharged ...................... 513
Preparing and checking before winter....................... 330
Warning light ......................... 477
Bottle holders .......................... 364
Brake Fluid ...................................... 412
Parking brake........................ 224
Warning light ......................... 477
Brake assist ............................. 321
Brake override system ............ 177
Break-in tips ............................. 178
Brightness control Instrument panel light
control................................... 89 Care .................................. 390, 393
Aluminum wheels ................. 391
Exterior ................................. 390
Interior .................................. 393
Seat belts.............................. 394
Cargo capacity......................... 191
Cargo hooks ............................ 365
Cargo net hooks ...................... 366
Center differential lock ........... 297
Chains ...................................... 332
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

583Alphabetical index
4RUNNER (U)
Child safety ................................ 52Airbag precautions .................. 37
Back door precautions .......... 133
Battery precautions ....... 416, 516
Child restraint system ............. 53
How your child should
wear the seat belt ................. 31
Installing child restraints ......... 57
Moon roof precautions .......... 173
Power window lock switch .... 162
Power window precautions ... 165
Rear door child-protectors .... 114
Removed electronic key battery precautions ...... 444
Seat belt extender precautions ........................... 34
Seat belt precautions .............. 56
Seat heater precautions........ 353
Child-protectors....................... 114
Cleaning ........................... 390, 393 Aluminum wheels.................. 391
Exterior ................................. 390
Interior................................... 393
Seat belts .............................. 394
Clock ......................................... 371
Compass .................................... 92
Condenser ................................ 412
Console box ............................. 359
Cooling system Engine overheating ............... 517
Crawl Control ........................... 311
Cruise control Dynamic radar cruise
control................................. 273
Cup holders.............................. 360
Curtain shield airbags ............... 35
Customizable features ............ 547 Daytime running light
system.................................... 229
Defogger Front windshield ................... 348
Outside rear view
mirrors ........................ 342, 348
Rear window ................. 342, 348
Dimension ................................ 522
Dinghy towing.......................... 208
Display Dynamic radar cruise control ................................ 273
LDA
(Lane Departure Alert) ....... 265
Multi-information display ......... 90
Trip information....................... 90
Warning message................. 487
Do-it-yourself maintenance .... 402
Door courtesy lights Wattage ................................ 531
Doors Automatic door locking
and unlocking system......... 115
Back door ............................. 131
Door lock ...................... 113, 132
Door windows ....................... 162
Open door warning buzzer ... 120
Open door warning light ....... 479
Outside rear view mirrors ..... 160
Rear door child-protector ...... 114
Side doors ............................ 110D

584Alphabetical index
4RUNNER (U)
Downhill assist control system .................................... 308
Drive-Start Control .................. 177
Driver’s seat position memory .................................. 149
Driving ...................................... 176 Break-in tips .......................... 178
Correct driving posture ........... 28
Driving assist systems .......... 321
Off-road precautions ............. 334
Procedures ........................... 176
Winter drive tips .................... 330
Dynamic radar cruise control .................................... 273 Eco Driving Indicator ................ 97
EDR (Event data recorder)........ 10
Electronic key .......................... 102
Battery-saving function ......... 121
If the electronic key does not
operate properly ................. 510
Replacing the battery............ 442
Emergency, in case of If the electronic key does not operate
properly .............................. 510
If the engine will not start ...... 507
If the vehicle battery is discharged.......................... 513
If the warning buzzer sounds................................ 477
If the warning light turns on ....................................... 477
If a warning message
is displayed ........................ 487
If you cannot operate back door opener ............... 509
If you have a flat tire ............. 492
If you think something is wrong .............................. 475
If your vehicle becomes
stuck ................................... 520
If your vehicle has to be stopped in an emergency ... 465
If your vehicle needs to be towed......................... 468
If your vehicle overheats....... 517E

587Alphabetical index
4RUNNER (U)
I/M test ...................................... 401
IdentificationEngine................................... 523
Vehicle .................................. 523
Ignition switch (engine switch) .............. 209, 212
Illuminated entry system ........ 357
Immobilizer system ................... 76
Indicators ................................... 85
Initialization
Maintenance ......................... 397
Moon roof.............................. 172
Power back window .............. 168
Power windows ..................... 164
Inside rear view mirror ............ 158
Instrument panel light control ...................................... 89
Interior lights............................ 355
Intuitive parking assist............ 286 Jack
Vehicle-equipped jack .......... 492
Jack handle .............................. 496
Jam protection function Moon roof ............................. 171
Power back window .............. 168
Power windows..................... 163
KDSS ........................................ 322
Keyless entry ........................... 118 Smart key system ................. 118
Wireless remote control ........ 110
Keys .......................................... 102 Battery-saving function ......... 121
Electronic key ....................... 102
Engine switch ............... 209, 212
If the electronic key
does not operate
properly .............................. 510
Key number plate ................. 102
Keyless entry ........................ 110
Mechanical key ..................... 104
Replacing the battery............ 442
Warning buzzer .................... 120
Wireless remote control
key...................................... 110
Knee airbags .............................. 35
IJ
K

590Alphabetical index
4RUNNER (U)
Parking brake ........................... 224Operation .............................. 224
Parking brake engaged warning buzzer ................... 477
PCS (Pre-Collision System) .......... 254 Warning light ......................... 214
Parking lights ........................... 225 Light switch ........................... 225
Replacing light bulbs............. 453
Wattage ................................ 531
Pen holder ................................ 363
Personal lights ......................... 356
Power back window ................ 166 Jam protection function......... 168
Operation .............................. 166
Power outlets ................... 372, 376
Power steering Fluid ...................................... 414
Warning light ......................... 479
Power windows........................ 162 Door lock linked
window operation ............... 164
Jam protection function......... 163
Operation .............................. 162
Window lock switch............... 162 Radiator .................................... 412
Rear differential lock
system.................................... 305
Rear seats
Adjustment............................ 139
Folding down ........ 141, 143, 145
Rear step bumper .................... 132
Rear turn signal lights ............ 223
Replacing light bulbs ............ 459
Turn signal lever ................... 223
Wattage ................................ 531
Rear view mirror Inside rear view mirror .......... 158
Outside rear view mirrors ..... 160
Rear view monitor system
*
Rear window ............................ 166
Rear window defoggers....................... 342, 348
Rear window wiper .................. 240
Refueling .................................. 243
Capacity................................ 524
Fuel types ............................. 524
Opening the fuel tank cap..... 245
Replacing Fuses .................................... 445
Key battery ........................... 442
Light bulbs ............................ 448
Tires...................................... 492
Reporting safety defects
for U.S. owners...................... 562
Resetting the message indicating maintenance
is required.............................. 397
Roof luggage carrier ............... 186
PR

595Alphabetical index
4RUNNER (U)
Warning messages .................. 487
Washer...................................... 237Checking ............................... 418
Preparing and checking before winter....................... 330
Switch ........................... 237, 240
Washing and waxing ............... 390
Weight Cargo capacity ...................... 191
Load limits............................. 191
Weight................................... 522
Wheels ...................................... 437 Replacing wheels.................. 437
Size ....................................... 530
Window glasses....................... 162
Window lock switch ................ 162
Windows ................................... 162 Power back window .............. 166
Power windows ..................... 162
Rear window defogger ..................... 342, 348
Washer ......................... 237, 240
Windshield wiper
de-icer ............................ 342, 349
Windshield wipers ........... 237, 240 Intermittent wiper .................. 237
Winter driving tips ................... 330
Wireless remote control
key .......................................... 103 Locking/Unlocking................. 110
Replacing the battery ............ 442
*: Refer to the “NAVIGATION AND MULTIMEDIA SYSTEM OWNER’S MANUAL”.