Page 431 of 616

4316-3. Do-it-yourself maintenance
6
Maintenance and care
4RUNNER (U)■
After recharging/reconnecting the battery (vehicles with a smart key sys-
tem)
The engine may not start. Follow the procedure below to initialize the system.
Shift the shift lever to P.
Open and close any of the doors.
Restart the engine.
● Unlocking the doors using the smart key system may not be possible imme-
diately after reconnecting the battery. If this happens, use the wireless
remote control or the mechanical key to lock/unlock the doors.
● Start the engine with the engine switch in ACCESSORY mode. The engine
may not start when the engine switch turned from off. However, the engine
will operate normally from the second attempt.
● The engine switch mode is recorded by the vehicle. If the battery is recon-
nected, the vehicle will return the engine switch mode to the s tatus it was in
before the battery was disconnected. Make sure to turn off the engine
before disconnect the battery. Take extra care when connecting the battery
if the engine switch mode prior to discharge is unknown.
If the system will not start even after multiple attempts, contact your Toyota
dealer.
WARNING
■ Chemicals in the battery
Batteries contain poisonous and corrosive sulfuric acid and may produce
hydrogen gas which is flammable and explosive. To reduce the ri sk of death
or serious injury, take the following precautions while working on or near the
battery:
● Do not cause sparks by touching the battery terminals with tools.
● Do not smoke or light a match near the battery.
● Avoid contact with eyes, skin and clothes.
● Never inhale or swallow electrolyte.
● Wear protective safety glasses when working near the battery.
● Keep children away from the battery.
1
2
3
Page 520 of 616
5207-2. Steps to take in an emergency
4RUNNER (U)
Use the mechanical key
( P. 106) in order to perform the
following operations:
Locks all the doors
Closes the windows and moon
roof (turn and hold)
*
( P. 163, 171)
Unlocks all the doors
Turning the key rearward unlocks the driver’s door. Turning the key once
again unlocks the other doors.
Opens the windows and moon roof (turn and hold)*
( P. 163, 171)
*: This setting must be customized at your Toyota dealer.
If the electronic key does not operate
properly (vehicles with a smar t key system)
If communication between the electronic key and vehicle is
interrupted ( P. 123) or the electronic key cannot be used
because the battery is depleted, the smart key system and wire-
less remote control cannot be used. In such cases, the doors
can be opened and the engine c an be started by following the
procedure below.
Locking and unlocking the doors
1
2
3
4
Page 525 of 616

5257-2. Steps to take in an emergency
7
When trouble arises
4RUNNER (U)
■Starting the engine when t he battery is discharged
The engine cannot be started by push-starting.
■ To prevent battery discharge
●Turn off the headlights and the audio system while the engine is off.
● Turn off any unnecessary electrical components when the vehicle is running
at a low speed for an extended period, such as in heavy traffic .
■ Charging the battery
The electricity stored in the battery will discharge gradually even when the
vehicle is not in use, due to natural discharge and the draining effects of cer-
tain electrical appliances. If the vehicle is left for a long t ime, the battery may
discharge, and the engine may be unable to start. (The battery recharges
automatically during driving.)
■ 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 memorized 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 disconnecting 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.
● Make sure that the key is not inside the vehicle when rechargin g or replac-
ing the battery. The key may be locked in the vehicle if the al arm is acti-
vated. ( P. 81)
Page 603 of 616

603Alphabetical index
4RUNNER (U)
Warning buzzersBrake system ....... ................. 486
Downshifting ......................... 219
Intuitive parking assist .......... 288
Key reminder ................ 208, 492
Lane departure alert function ............................... 261
Open door ............................. 488
Open moon roof reminder..... 492
Pre-collision warning............. 250
Seat belt reminder ................ 489
Warning lights............................ 85 ABS....................................... 487
Automatic running boards
indicator light ...................... 488
Brake override system .......... 489
Brake system ....... ................. 486
Center differential lock indicator light ...................... 488
Charging system ................... 486
Drive-Start Control ................ 489
Four-wheel drive indicator light ...................... 488
KDSS .................................... 488
LDA indicator ........................ 490
Low engine oil pressure ........ 486
Low fuel level ........................ 489
Low speed four-wheel drive indicator light ...................... 488
Malfunction indicator lamp .... 487
Master warning light...... 490, 497
Multi-terrain Select indicator light ...................... 488
Open door ............................. 488
PCS ...................................... 490
Power steering ...................... 488
Rear differential lock indicator light ...................... 487
Seat belt reminder light ......... 489 Slip indicator ......................... 487
SRS ...................................... 487
Tire pressure ........................ 490
Unengaged “Park” ................ 488
Warning messages.................. 497
Washer ..................................... 234
Checking............................... 433
Preparing and checking before winter ...................... 342
Switch ........................... 234, 237
Washing and waxing ............... 404
Weight
Cargo capacity...................... 189
Load limits ............................ 189
Weight .................................. 532
Wheels ...................................... 451 Replacing wheels ................. 451
Size....................................... 540
Window glasses ...................... 161
Window lock switch ................ 161
Windows................................... 161 Power back window .............. 165
Power windows..................... 161
Rear window defogger ..................... 354, 361
Washer ......................... 234, 237
Windshield wiper
de-icer ............................ 354, 362
Windshield wipers ........... 234, 237 Intermittent wiper .................. 234
Winter driving tips ................... 342
Wireless remote control key .......................................... 105
Locking/Unlocking ................ 110
Replacing the battery............ 455
W
*: Refer to the “NAVIGATION AND MULTIMEDIA SYSTEM OWNER’S MANUAL”.