2010 TOYOTA 4RUNNER key battery

170 2-1. Driving procedures
4RUNNER_U
■If the engine does not start
The engine immobilizer system may not have been deactivated. ( P. 106)
■ Steering lock
After turning the “ENGINE START STOP” switch off and opening and closing
the doors, the steering wheel will be locked due to the steering lock function.
Operating the “ENGINE START STOP” 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, the motor may be sus-
pended if the engine is turned on and off repeatedly in a short period of time.
In this case, refrain from operating the engine. After about 10 seconds, the
steering lock motor will resume functioning.
■ When the “ENGINE START STOP” switch indicator flashes in amber
The system may be malfunctioning. Have the vehicle inspected by your
Toyota dealer immediately.
■ If the electronic key battery is depleted
 P. 528
The green indicator light on the “ENGINE
START STOP” switch will flash. Press the
“ENGINE START STOP” switch again
while turning the steering wheel left and
right.
CTH21AS019

188 2-2. Instrument cluster
4RUNNER_U
■The meters and display illuminate when (Optitron type meter)
Vehicles without a smart key system:
The engine switch is in the “ON” position.
Vehicles with a smart key system:
The “ENGINE START STOP” switch is in IGNITION ON mode.
■ Eco Driving Indicator operates when
The vehicle is being driven with the shift lever in D.
■ When the average fuel consumption is reset
The average fuel consumption displayed on the accessory meter and “Past
Record” screen of the navigation system (if equipped) will be reset at the
same time.
■ The brightness of the instrument panel lights (Optitron type meter)
When the headlight switch is turned to on, the brightness will be reduced
slightly unless the control dial is turned fully upward.
NOTICE
■ To prevent damage to the engine and its components
● Do not let the indicator needle of the tachometer enter the red zone, which
indicates the maximum engine speed.
● The engine may be overheating if the engine coolant temperature gauge is
in the red zone (H). In this case, immediately stop the vehicle in a safe
place, and check the engine after it has cooled completely. ( P. 603)
■ While driving (Optitron type meter)
When the voltmeter indicates more than 19 V or less than 9 V, the battery
may be malfunctioning. Have your vehicle checked at your Toyota dealer.

203
2-3. Operating the lights and wipers
2
When driving
4RUNNER_U
Vehicles with a smart key system
●
When the headlights come on: The headlights and tail lights turn off 30
seconds after a door is opened and closed if the “ENGINE START
STOP” switch is turned to ACCESSORY mode or turned off. (The lights
turn off immediately if on the key is pressed after all the doors are
locked.)
● When only the tail lights come on: The tail lights turn off automatically if
the “ENGINE START STOP” switch is turned off and the driver’s door is
opened.
To turn the lights on again, turn the “ENGINE START STOP” switch to IGNI-
TION ON mode, or turn the light switch off and then back to or
.
■ Customization that can be co nfigured at Toyota dealer
Settings (e.g. light sensor sensitivity) can be changed.
(Customizable features P. 638)
NOTICE
■To prevent battery discharge
Do not leave the lights on longer than necessary when the engine is not run-
ning.

415
3-5. Using the interior lights
3
Interior features
4RUNNER_U
■
Illuminated entry system
Vehicles without a smart key system
The lights automatically turn on/off according to the engine switch position,
whether the doors are locked/unlocked, and whether the doors are open/
closed.
Vehicles with a smart key system
The lights automatically turn on/off according to “ENGINE START STOP”
switch mode, the presence of the electronic key, whether the doors are
locked/unlocked, and whether the doors are open/closed.
■ To prevent battery discharge
If the following lights remain on when the door is not fully closed, the lights
will go off automatically after 20 minutes:
● Engine switch light
● Front interior light (when the switch is in the position)
● Rear interior light (when the switch is in the position)
● Footwell lights
● Inside door handle lights
■ Customization that can be co nfigured at Toyota dealer
Settings (e.g. the time elapsed before lights turn off) can be changed.
(Customizable features
P. 638)
Personal lights

432 3-7. Other interior features
4RUNNER_U
■For quicker adjustment of the clock
To advance the minutes and hours quickly, press and hold the “M” or “H” but-
ton.
The time can be adjusted back or forth by following the procedure below:
■ The clock is displayed when
Vehicles without a smart key system
The engine switch is in the “ACC” or “ON” position.
Vehicles with a smart key system
The “ENGINE START STOP” switch is in ACCESSORY or IGNITION ON
mode.
■ When disconnecting and reco nnecting battery terminals
The clock data will be reset.
The hour or minute can be moved for-
ward or backward by pressing the
“MODE/ ” or “SET/ ” button while
pressing and holding the “H” or “M” but-
ton. If the “MODE/ ” or “SET/ ” but-
ton is also pressed and held in the above
operation, the hour or minute will move
faster.

438 3-7. Other interior features
4RUNNER_U
■The power outlet can be used when
Vehicles without a smart key system
The engine switch is in the “ACC” or “ON” position.
Vehicles with a smart key system
The “ENGINE START STOP” switch is in ACCESSORY or IGNITION ON
mode.
NOTICE
■ To avoid damaging the power outlet
Close the power outlet lid when the power outlet is not in use.
Foreign objects or liquids that enter the power outlet may cause a short cir-
cuit.
■ To prevent blown fuse
Do not use an accessory that uses more than 12 V 10 A.
■ To prevent battery discharge
Do not use the power outlet longer than necessary when the engine is not\
running.
Luggage compartment (vehicles with the 120V AC)
CTH37AS021

Maintenance and care4
477
4RUNNER_U
4-1. Maintenance and careCleaning and protecting the vehicle exterior ......... 478
Cleaning and protecting the vehicle interior .......... 481
4-2. Maintenance Maintenance requirements .................. 484
General maintenance....... 486
Emission inspection and maintenance (I/M)
programs ........................ 490
4-3. Do-it-yourself maintenance
Do-it-yourself service precautions .................... 491
Hood ................................ 494
Engine compartment ........ 495
Tires ................................. 514
Tire inflation pressure ...... 520
Wheels ............................. 524
Air conditioning filter......... 526
Wireless remote control/ electronic key battery ..... 528
Checking and replacing fuses .............................. 531
Light bulbs........................ 541

510 4-3. Do-it-yourself maintenance
4RUNNER_U
■After recharging/reconnecting the battery (vehicles with smart key sys-
tem)
● Unlocking the doors using the smart key system may not be possible
immediately after disconnecting the battery. If this happens, use the wire-
less remote control or the mechanical key to lock/unlock the doors.
● Start the engine with the “ENGINE START STOP” switch in ACCES-
SORY mode. The engine may not start with the “ENGINE START STOP”
switch turned OFF. However, the engine will operate normally from the
second attempt.
● The “ENGINE START STOP” switch mode is recorded by the vehicle. If
the battery is reconnected, the vehicle will return the “ENGINE START
STOP” switch mode to the status it was in before the battery was discon-
nected. Make sure to turn off the engine before disconnect the battery.
Take extra care when connecting the battery if the “ENGINE START
STOP” switch mode prior to discharge is unknown.
If the system will not start even after multiple attempts, contact your Toyota
dealer.
CAUTION
■ Chemicals in the battery
Batteries contain poisonous and corrosive sulfuric acid and may produce
hydrogen gas which is flammable and explosive. To reduce the risk 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.