2021 TOYOTA 4RUNNER engine

1223-2. Opening, closing and locking the doors
4RUNNER (U)■
Conditions affecting operation
The smart key system uses weak radio waves. In the following si tuations, the
communication between the electronic key and the vehicle may be affected,
preventing the smart key system, wireless remote control and en gine immobi-
lizer system from operating properly. (Ways of coping: P. 507)
● When the electronic key battery is depleted
● Near a TV tower, electric power plant, gas station, radio stati on, large dis-
play, airport or other facility that generates strong radio wav es or electrical
noise
● When carrying a portable radio, cellular phone, cordless phone or other
wireless communication device
● When the electronic key is in contact with, or is covered by the following
metallic objects
• Cards to which aluminum foil is attached
• Cigarette boxes that have aluminum foil inside
• Metallic wallets or bags
• Coins
• Hand warmers made of metal
• Media such as CDs and DVDs
● When multiple electronic keys are in the vicinity
● When other wireless keys (that emit radio waves) are being used nearby
● When carrying the electronic key together with the following devices that
emit radio waves
• Another vehicle’s electronic key or a wireless key that emits radio waves
• Personal computers or personal digital assistants (PDAs)
• Digital audio players
• Portable game systems
● If window tint with a metallic content or metallic objects are attached to the
back window
● When the electronic key is placed near a battery charger or ele ctronic
devices
● When the vehicle is parked in a pay parking spot where radio wa ves are
emitted.
If the doors cannot be locked/unlocked using the smart key syst em, lock/
unlock the doors by performing any of the following:
● Bring the electronic key close to either front door handle and operate the
entry function.
● Operate the wireless remote control.
If the doors cannot be locked/unlocked using the above methods, use the
mechanical key. ( P. 507)
If the engine cannot be started using the smart key system, ref er to P. 508.

1233-2. Opening, closing and locking the doors
3
Operation of each component
4RUNNER (U)■
Note for the entry function
●Even when the electronic key is within the effective range (det ection areas),
the system may not operate properly in the following cases:
• The electronic key is too close to the window or outside door handle, near
the ground, or in a high place when the doors are locked or unl ocked.
• The electronic key is on the instrument panel or floor, in the glove box, or
in the auxiliary box of the instrument panel.
● Do not leave the electronic key on top of the instrument panel or near the
door pockets when exiting the vehicle. Depending on the radio w ave recep-
tion conditions, it may be detected by the antenna outside the cabin and the
door will become lockable from the outside, possibly trapping the electronic
key inside the vehicle.
● As long as the electronic key is within the effective range, th e doors may be
locked or unlocked by anyone. However, only the doors detecting the elec-
tronic key can be used to unlock the vehicle.
● The doors may lock or unlock if the electronic key is within th e effective
range and a large amount of water splashes on the door handle, such as in
the rain or in a car wash. The doors will automatically be lock ed after
approximately 60 seconds if a door is not opened and closed.
● If the wireless remote control is used to lock the doors when t he electronic
key is near the vehicle, there is a possibility that the door m ay not be
unlocked by the entry function. (Use the wireless remote contro l to unlock
the doors.)
● Whether or not the electronic key is inside the vehicle, the engine could be
started if the electronic key is near the window.
■ Note for locking the doors
●Touching the door lock sensor while wearing gloves may delay or prevent
lock operation. Remove the gloves and touch the lock sensor aga in.
● When the lock operation is performed using the lock sensor, rec ognition sig-
nals will be shown up to two consecutive times. After this, no recognition
signals will be given.
● If the door handle becomes wet while the electronic key is with in the effec-
tive range, the door may lock and unlock repeatedly. Place the electronic
key in a location 6 ft. (2 m) or more away from the vehicle while the vehicle
is being washed. (Take care to ensure that the key is not stolen.)
● If the electronic key is inside the vehicle and a door handle b ecomes wet
during a car wash, a buzzer will sound outside the vehicle. To turn off the
alarm, lock all the doors.
● The lock sensor may not work properly if it comes into contact with ice,
snow, mud, etc. Clean the lock sensor and attempt to operate it again, or
use the lock sensor on the lower part of the door handle.
● Fingernails may scrape against the door during operation of the door han-
dle. Be careful not to injure fingernails or damage the surface of the door.

1243-2. Opening, closing and locking the doors
4RUNNER (U)■
Note for the unlocking function
●Gripping the door handle when wearing a glove may not unlock th e door.
● A sudden approach to the effective range or door handle may prevent the
doors from being unlocked. In this case, return the door handle to the origi-
nal position and check that the doors unlock before pulling the door handle
again.
● If there is another electronic key in the detection area, it ma y take slightly
longer to unlock the doors after the door handle is gripped.
■ When the vehicle is not driven for extended periods
●To prevent theft of the vehicle, do not leave the electronic ke y within 6 ft. (2
m) of the vehicle.
● The smart key system can be deactivated in advance. Ask your To yota
dealer for details.
● Setting the electronic key to battery- saving mode helps to reduce key bat-
tery depletion. ( P. 121)
■ To operate the system properly
●Make sure to carry the electronic key when operating the system. Do not get
the electronic key too close to the vehicle when operating the system from
the outside of the vehicle.
● Depending on the position and holding condition of the electronic key, the
key may not be detected correctly and the system may not operat e properly.
(The alarm may go off accidentally, or the door lock prevention function may
not operate.)
■ If the smart key system does not operate properly
●Locking and unlocking the doors: Use the mechanical key. ( P. 507)
● Starting the engine: P. 508
■ Customization
Settings (e. g. operation signal) can be changed.
(Customizable features: P. 545)
■ If the smart key system has been d eactivated in a customized setting
● Locking and unlocking the doors: P. 507
● Starting the engine and changing engine switch modes: P. 508
● Stopping the engine: P. 213

1293-2. Opening, closing and locking the doors
3
Operation of each component
4RUNNER (U)
■Jam protection function
During Automatic running boards operation:
If a board contacts an obstacle when extending, it will retract . If an obstacle
gets caught between a board and the vehicle when retracting, th e board will
extend.
If an obstacle is detected 3 times in a row during Automatic ru nning boards
operation, the board will stop at the position it contacts the obstacle. When a
side door on the same side as the board is opened and closed on e more
time, the board will extend and retract, or retract and extend. After this, the
board will resume normal operation.
■ Automatic retraction function
The boards will be automatically retracted, for safety, under t he following con-
ditions:
● A board is not completely retracted
● Vehicle speed is approximately 5 mph (8 km/h) or higher
The boards will not automatically extend again when vehicle spe ed returns to
less than 5 mph (8 km/h).
■ If the Automatic running boards indicator comes on when driving first
commences
A board has not completely retracted. Check that nothing is caught between
the board and the vehicle.
Additionally, if the engine is started immediately after a door has been closed,
the automatic running board may not retract completely and the automatic
running boards indicator may illuminate. In this case, open and close the door
to retract the running board and turn off the indicator.
■ If the Automatic running boards indicator light flashes
There may be a malfunction in the Automatic running boards syst em. Have
the vehicle inspected by your Toyota dealer immediately.
■ When snow or mud is attached to the board or the board is froze n
The Automatic running boards may not operate correctly. Before stepping on
a board, check that it is completely extended. If the Automatic running boards
are not operating correctly, turn the Automatic running boards switch off and
refrain from use.
When removing snow or mud, turn the Automatic running boards sw itch off.
■ After recharging/reconnecting the battery
If the Automatic running boards have not completely extended or retracted,
the boards may not move in the intended direction the first tim e they are oper-
ated. However, from the second time onwards, the boards will re sume normal
operation.
■ When getting in and out of the vehicle
Take care because clothes and shoes may become dirty due to con tact with
the lower part of the vehicle body.

1493-3. Adjusting the seats
3
Operation of each component
4RUNNER (U)
Your preferred driving position (the position of the driver’s seat) can
be recorded and recalled by pressing a button.
Two different driving positions can be recorded into memory.
■Recording procedure
Check that the shift lever is in P.
Turn the engine switch to IGNITION ON mode.
Adjust the driver’s seat t o the desired positions.
While pressing the “SET”
button, or within 3 seconds
after the “SET” button is
pressed, press button “1” or
“2” until the buzzer sounds.
If the selected button has
already been preset, the previ-
ously recorded position will be
overwritten.
Check that the shift lever is in P.
Turn the engine switch to IGNITION ON mode.
Press one of the buttons for the
driving position you want to
recall until the buzzer sounds.
Driving position memor y
: If equipped
This feature automatically adjusts the driver’s seat to suit yo ur
preferences.
Driving position memory
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Recall procedure
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1503-3. Adjusting the seats
4RUNNER (U)
■To stop the position recall operation part-way through
Perform any of the following:
●Press the “SET” button.
● Press button “1” or “2”.
● Operate any of the seat adjustment switches (only cancels seat position
recall).
■ Seat positions that can be memorized ( P. 136)
All adjusted positions can be recorded.
■ Operating the driving position m emory after turning the engine switch
off
Recorded seat positions can be activated up to 180 seconds after the driver’s
door is opened and another 60 seconds after it is closed again.
■ In order to correctly use the dr iving position memory function
If a seat position is already in the furthest possible position and the seat is
operated in the same direction, the recorded position may be sl ightly different
when it is recalled.
Each electronic key can be registered to recall your preferred driving
position.
■Registering procedure
Record your driving position to button “1” or “2” before perfor ming
the following:
Carry only the key you want to register, and then close the dri ver’s
door.
If 2 or more keys are in the vehicle, the driving position cann ot be
recorded properly.
Check that the shift lever is in P.
Turn the engine switch to IGNITION ON mode.
Recall the driving position that you want to record.
Memory recall function
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1513-3. Adjusting the seats
3
Operation of each component
4RUNNER (U)
While pressing the recalled
button, press and hold the
door lock switch (either lock
or unlock) until the buzzer
sounds.
If the button could not be regis-
tered, the buzzer sounds contin-
uously for approximately 3
seconds.
■
Recall procedure
Make sure that the doors are locked before recalling the drivin g
position. Carry the electronic k ey that has been registered to the
driving position, and then unlock and open the driver’s door us ing
the smart system or wi reless remote control.
The driving position will move to the recorded position.
If the driving position is in a position that has already been recorded, the
seat will not move.
■
Cancelation procedure
Carry only the key you want to cancel and then close the driver ’s
door.
If 2 or more keys are in the vehicle, the driving position cann ot be
canceled properly.
Turn the engine switch to IGNITION ON mode.
While pressing the “SET” button, press and hold the door lock
switch (either lock or unlock) until the buzzer sounds twice.
If the button could not be canceled, the buzzer sounds continuo usly for
approximately 3 seconds.
■ Recalling the driving position u sing the memory recall function
● Different driving positions can be registered for each electronic key. There-
fore, the driving position that is recalled may be different de pending on the
key being carried.
● If a door other than the driver’s door is unlocked with the sma rt system, the
driving position cannot be recalled. In this case, press the dr iving position
button which has been set.
■ Customization
The unlock door settings of the memory recall function can be customized.
(Customizable features: P. 545)
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1583-4. Adjusting the steering wheel and mirrors
4RUNNER (U)
The height of the rear view mirror can be adjusted to suit your driving
posture.
Adjust the height of the rear view
mirror by moving it up and down.
Responding to the level of brightness of the headlights of vehi cles
behind, the reflected light is automatically reduced.
Changing automatic anti-glare
function mode
ON/OFF
When the automatic anti-glare
function is in on mode, the indica-
tor illuminates.
Vehicles without a smart key sys-
tem:
The function will set to on mode
each time the engine switch is
turned to the “ON” position.
Pressing the button turns the func-
tion to off mode. (The indicator also
turns off.)
Vehicles with a smart key system:
The function will set to on mode
each time the engine switch is
turned to IGNITION ON mode.
Pressing the button turns the func-
tion to off mode. (The indicator also
turns off.)
Inside rear view mirror
The rear view mirror’s position ca n be adjusted to enable suffi-
cient confirmation of the rear view.
Adjusting the height of rear view mirror
Anti-glare function
Indicator