2017 TOYOTA 4RUNNER key battery

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4RUNNER (U)_(OM35B37U)6-1. Maintenance and care
Cleaning and protecting the vehicle exterior .......... 338
Cleaning and protecting the vehicle interior ........... 341
6-2. Maintenance Maintenance requirements ................... 344
General maintenance ........ 346
Emission inspection and maintenance (I/M)
programs ......................... 349
6-3. Do-it-yourself maintenance
Do-it-yourself service precautions ..................... 350
Hood.................................. 353
Engine compartment ......... 354
Tires .................................. 369
Tire inflation pressure........ 375
Wheels .............................. 378
Air conditioning filter .......... 381
Wireless remote control/ electronic key
battery ............................. 383
Checking and replacing fuses ............................... 386
Light bulbs ......................... 389 7-1. Essential information
Emergency flashers ........... 406
If your vehicle has to be stopped in an
emergency....................... 407
7-2. Steps to take in an emergency
If your vehicle needs to be towed .......................... 409
If you think something is wrong............................... 415
Fuel pump shut off system ............................. 416
If a warning light turns on or a warning buzzer
sounds ............................. 417
If a warning message or indicator is displayed ....... 426
If you have a flat tire .......... 433
If the engine will not start ................................. 448
If you cannot operate back door opener ............ 450
If the electronic key does not operate properly ........ 451
If the vehicle battery is discharged ....................... 453
If your vehicle overheats.... 457
If the vehicle becomes stuck ................................ 460
6Maintenance and care7When trouble arises

731-2. Theft deterrent system
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For safety and security
4RUNNER (U)_(OM35B37U)
■System maintenance
The vehicle has a maintenance-free type alarm system.
■ Items to check before locking the vehicle
To prevent unexpected triggering of the alarm and vehicle theft, make sure of
the following:
●Nobody is in the vehicle.
● The windows and moon roof are closed before the alarm is set.
● No valuables or other personal items are left in the vehicle.
■ Triggering of the alarm
The alarm may be triggered in the following situations:
(Stopping the alarm deactivates the alarm system.)
■ Alarm-operated door lock
●When the alarm is operating, the doors are locked automatically to prevent
intruders.
● Do not leave the key inside the vehicle when the alarm is operating, and
make sure the key is not inside the vehicle when recharging or replacing the
battery.
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A person inside the vehicle opens a door
or the hood.
● The battery is recharged or replaced
when the vehicle is locked.
NOTICE
■To ensure the system operates correctly
Do not modify or remove the system. If modified or removed, the proper
operation of the system cannot be guaranteed.

943-1. Key information
4RUNNER (U)_(OM35B37U)■
Key battery depletion
Vehicles with a smart key system
● The standard battery life is 1 to 2 years.
● If the battery becomes low, an alarm will sound in the cabin when the engine
stops. ( →P. 431)
● As the electronic key always receives radio waves, the battery will become
depleted even if the electronic key is not used. The following symptoms indi-
cate that the electronic key battery may be depleted. Replace the battery
when necessary. ( →P. 383)
• The smart key system or the wireless remote control does not operate.
• The detection area becomes smaller.
• The LED indicator on the key surface does not turn on.
● To avoid serious deterioration, do not leave the electronic key within 3 ft. (1
m) of the following electrical appl iances that produce a magnetic field:
•TVs
• Personal computers
• Cellular phones, cordless phones and battery chargers
• Recharging cellular phones or cordless phones
• Table lamps
• Induction cookers
Vehicles without a smart key system
If the wireless remote control function does not operate, the battery may be
depleted. Replace the battery when necessary. (→ P. 383)
■ Precautions when disconnecting 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 immediately after the battery has been disconnected. 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 reconnecting the battery
but will start normally after the second attempt. This is not a malfunction.
● The engine switch mode is memorized by the vehicle. When the battery is
reconnected, the system will return to the mode it was in before the battery
was disconnected. Before disconnecting the battery, turn the engine switch
off.
If you are unsure what mode the engine switch was in when the battery was
disconnected, be especially careful when reconnecting the battery.

953-1. Key information
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Operation of each component
4RUNNER (U)_(OM35B37U)■
Replacing the battery
→P. 383
■ Confirmation of the registered key number
The number of keys already registered to the vehicle can be confirmed. Ask
your Toyota dealer for details.
■ If a wrong key is used (vehicles with a smart key system)
The key cylinder rotates freely to isolate inside mechanism.
■ Certification for wireless remote control
For vehicles sold in the U.S.A.
FCC ID: HYQ12BBY
FCC ID: HYQ13BDC
NOTE:
This device complies with part 15 of the FCC Rules. Operation is subject to
the following two conditions: (1) This device may not cause harmful interfer-
ence, and (2) this device must accept any interference received, including
interference that may cause undesired operation.
FCC WARNING:
Changes or modifications not expressly approved by the party responsible for
compliance could void the user’s authority to operate the equipment.
For vehicles sold in Canada
NOTE:
This device complies with Industry Canada's licence-exempt RSSs.
Operation is subject to the following two conditions:
(1) This device may not cause interference; and
(2) This device must accept any interference, including interference that may cause undesired operation of the device.

993-1. Key information
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Operation of each component
4RUNNER (U)_(OM35B37U)■
When the door ca nnot be locked by the lock sen sor on the upper part of
the door handle (vehicles with a smart key system)
■ Door lock buzzer
If an attempt to lock the doors is made when a door is not fully closed, a
buzzer sounds continuously. Fully close the door to stop the buzzer, and lock
the vehicle once more.
■ Alarm
Locking the doors will set the alarm system. ( →P. 72)
■ If the smart key system or the wireless remote control does not operate
properly
Use the mechanical key to lock and unlock the doors. ( →P. 451)
Replace the battery with a new one if it is depleted. ( →P. 383)
◆Door lock switches
Locks all the doors
Unlocks all the doors
◆Inside lock buttonsLocks the door
Unlocks the door
The front doors can be opened
by pulling the inside handle
even if the lock buttons are in
the lock position.
If the door will not lock even when the top-
side sensor area is touched, try touching
both the topside and underside sensor
areas at the same time.
Unlocking and locking the doors from the inside
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1073-2. Opening, closing and locking the doors
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Operation of each component
4RUNNER (U)_(OM35B37U)■
Battery-saving function
The battery-saving function will be activated in order to prevent the electronic
key battery and the vehicle battery from being discharged while the vehicle is
not in operation for a long time.
●In the following situations, the smart key system may take some time to
unlock the doors.
• The electronic key has been left in an area of approximately 6 ft. (2 m) of
the outside of the vehicle for 10 minutes or longer.
• The smart key system has not been used for 5 days or longer.
● If the smart key system has not been used for 14 days or longer, the doors
cannot be unlocked at any doors except the driver’s door. In this case, take
hold of the driver’s door handle, or use the wireless remote control or the
mechanical key, to unlock the doors.
The system will resume operation when
● The vehicle is locked using the door handle lock switch when carrying the
electronic key on your person.
● The vehicle is locked/unlocked using the wireless remote control.
(→P. 97)
● The vehicle is locked/unlocked using the mechanical key. ( →P. 451)
■ Conditions affecting operation
The smart key system uses weak radio waves. In the following situations, the
communication between the electronic key and the vehicle may be affected,
preventing the smart key system, wireless remote control and engine immobi-
lizer system from operating properly. (Ways of coping: →P. 451)
● When the electronic key battery is depleted
● Near a TV tower, electric power plant, gas station, radio station, large dis-
play, airport or other facility that generates strong radio waves or electrical
noise
● When carrying a portable radio, cellular phone, cordless phone or other
wireless communication device
Interior alarm sounds
once.
The engine switch was
pressed after the doors
were unlocked with the
mechanical key.
Touch the electronic
key to the engine
switch while depressing
the brake pedal.
The engine switch was
pressed two consecu-
tive times without the
electronic key being
present.
AlarmSituationCorrection procedure

1984-2. Driving procedures
4RUNNER (U)_(OM35B37U)
If the engine is stopped with the shift lever in a position other than P,
the engine switch will not be turned off but instead be turned to
ACCESSORY mode. Perform the following procedure to turn the
switch off:
Check that the parking brake is set.
Shift the shift lever to P.
Check that the indicator on th e engine switch is illuminated in
amber and then press the engine switch once.
Check that the indicator on the engine switch is off.
■Auto power off function
If the vehicle is left in ACCESSORY mode for more than 20 minutes or IGNI-
TION ON mode (the engine is not running) for more than an hour with th\
e
shift lever in P, the engine switch will automatically turn off. However, this
function cannot entirely prevent battery discharge. Do not leave the vehicle
with the engine switch in ACCESSORY or IGNITION ON mode for long peri-
ods of time when the engine is not running.
■ Electronic key battery depletion
→P. 9 4
■ Conditions affecting operation
→P. 107
■ Notes for the entry function
→P. 108
■ If the engine does not start
The engine immobilizer system may not have been deactivated. ( →P. 70)
Contact your Toyota dealer.
■ Steering lock
After turning the engine switch off and opening and closing the doors, the
steering wheel will be locked due to the steering lock function. Operating the
engine switch again automatically cancels the steering lock.
When stopping the engine with the shift lever in a position other
than P
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1994-2. Driving procedures
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Driving
4RUNNER (U)_(OM35B37U)■
When the steering lock cannot be released
■ Steering lock motor o verheating 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 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. 383
■ Operation of the engine switch
If the switch is not pressed shortly and firmly, the engine switch mode may
not change or the engine may not start. The green indicator light on the engine
switch will flash. Press the engine switch
again while turning the steering wheel left
and right.