2021 TOYOTA SIENNA HYBRID Power

1653-2. Opening, closing and locking the doors
3
Before driving
compartment (vehicles with entry
function)
Antennas inside the cabin
■Effective range (areas within
which the electronic key is
detected)
When locking or unlocking the
doors (vehicles with entry func-
tion)
The system can be operated when
the electronic key is within about 2.3
ft. (0.7 m) of the outside front door
handles or back door opener switch.
(Only the doors detecting the key
can be operated.)
When starting the hybrid system
or changing power switch modes
The system can be operated when
the electronic key is inside the vehi-
cle.
■If an alarm sounds or a warning
message is displayed
An alarm sounds and warning mes-
sage displays shown on the multi-
information display are used to pro-
tect against unexpected accidents
or theft of the vehicl e resulting from
erroneous operation. When a warn-
ing message is displayed, take
appropriate measures based on the
displayed message.
When only an ala rm sounds, cir-
cumstances and c orrection proce-
dures are as follows.
●When an exterior alarm sounds
once for 5 seconds
●When an interior alarm pings con-
tinuously
■Battery-saving function (vehi-
cles with entry function)
The battery-saving function will be
activated in ord er to prevent the
electronic key battery and the 12-
volt 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 11.5 ft.
(3.5 m) of th e outside of the vehi-
cle for 2 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
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1663-2. Opening, closing and locking the doors
wireless remote control or the
mechanical key, to unlock the
doors.
■Turning an electronic key to
battery-saving mode
●When battery-saving mode is set,
battery depletion is minimized by
stopping the electronic key from
receiving radio waves.
Press twice while pressing
and holding .
Confirm that the electronic key indi-
cator flashes 4 times.
While the battery-saving mode is
set, the smart key system cannot be
used. To cancel the function, press
any of the electronic key buttons.
●Electronic keys that will not be
used for long periods of time can
be set to the battery-saving mode
in advance.
■Conditions affecting operation
The smart key system uses weak
radio waves. In the following situa-
tions, the communication between
the electronic key and the vehicle
may be affected, preventing the
smart key system, wireless remote
control and immobilizer system from
operating properly.
(Ways of coping: P.504)
●When the electronic key battery is
depleted
●Near a TV tower, electric power
plant, gas station , radio station,
large display, airpo rt or other facil-
ity that generates strong radio
waves or electrical noise
●When the electronic key is in con-
tact with, or is c overed by the fol-
lowing metallic objects
• Cards to which aluminum foil is
attached
• Cigarette boxes that have alumi-
num foil inside
• Metallic wallets or bags
•Coins
• Hand warmers made of metal
• Media such as CDs and DVDs
●When other wireless key (that
emits radio waves) is being used
nearby
●When carrying the electronic key
together with the following devices
that emit radio waves
• Portable radio, cellular phone, cordless phone or other wireless
communication devices
• 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 wit h a metallic con-
tent or metallic objects are
attached to the rear window
●When the electronic key is placed
near a battery charger or elec-
tronic devices
●When parking in a coin-operated
parking lot (Radio waves used to
detect vehicles may affect the
smart key system.)
■Note for the entry function
●Even when the electronic key is
within the effective range (detec-
tion areas), the system may not
operate properly in the following
cases:
• The electronic key is too close to
the window or outside door han-
dle, near the ground, or in a high
place when the doors are locked
or unlocked.
• The electronic key is on the instru- ment panel, or floor, or in the door
pockets or glove box when the

1673-2. Opening, closing and locking the doors
3
Before driving
hybrid system is started or power
switch modes are changed.
●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
wave reception conditions, it may
be detected by the antenna out-
side 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, the
doors may be locked or unlocked
by anyone. However, only the
doors detecting the electronic key
can be used to unl ock the vehicle.
●Even if the electronic key is not
inside the vehicle, it may be possi-
ble to start the hybrid system if the
electronic key is near the window.
●The doors may unlock if a large
amount of water splashes on the
door handle, such as in the rain or
in a car wash when the electronic
key is within the effective range.
(The doors will automatically be
locked after approximately 60 sec-
onds if the doors are not opened
and closed.)
●If the wireless remote control is
used to lock the doors when the
electronic key is near the vehicle,
there is a possib ility that the door
may not be unlocke d by the entry
function. (Use the wireless remote
control to unloc k the doors.)
●Touching the door lock sensor
while wearing gloves may delay or
prevent lock operation. Remove
the gloves and touch the lock sen-
sor again.
●When the lock op eration is per-
formed using the lock sensor, rec-
ognition signals will be shown up
to two consecutive times. After
this, no recogniti on signals will be
given.
●If the door handle becomes wet
while the electronic key is within the effective range, the door may
lock and unlock repeatedly. In that
case, follow the
following correc-
tion procedures to wash the vehi-
cle:
• Place the electronic key in a loca-
tion 6 ft. (2 m) or more away from
the vehicle. (Take care to ensure
that the key is not stolen.)
• Set the electronic key to battery- saving mode to disable the smart
key system. ( P.166)
●If the electronic key is inside the
vehicle and a door handle
becomes wet during a car wash, a
message may be shown on the
multi-information display and a
buzzer will sound outside the vehi-
cle. To turn off th e alarm, lock all
the doors.
●The lock sensor may not work
properly if it comes into contact
with ice, snow, m ud, etc. Clean
the lock sensor and attempt to
operate it again, or use the lock
sensor on the lower part of the
door handle.
●A sudden approach to the effec-
tive range or door handle may pre-
vent the doors from being
unlocked. In this case, return the
door handle to the original position
and check that t he doors unlock
before pulling the door handle
again.
●If there is another electronic key in
the detection area, it may take
slightly longer to unlock the doors
after the door handle is gripped.
■When the vehicle is not driven
for extended periods
●Vehicles with entry function: To
prevent theft of the vehicle, do not
leave the electronic key within 6 ft.
(2 m) of the vehicle.
●The smart key system can be
deactivated in advance. ( P.544)
●Battery-saving mode can reduce
the power consumption of elec-
tronic keys. ( P.166)

1683-2. Opening, closing and locking the doors
■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 ou tside of the vehi-
cle.
Depending on the position and hold-
ing condition of the electronic key,
the key may not be detected cor-
rectly and the system may not oper-
ate properly. (The alarm may go off
accidentally, or the door lock pre-
vention may not operate.)
■If the smart key system does
not operate properly
●If the doors cannot be locked or
unlocked, perform the following.
• Bring the electronic key close to
the door handle and perform a
lock or unlock operation.
• Use the wireless remote control.
If the doors cannot be locked or
unlocked by perform the above, use
the mechanical key. ( P.504)
However, if the mechanical key is
used while the alarm system is set,
the warning will sound. ( P.83)
●If the hybrid system cannot be
started, refer to P.505
■Customization
Settings (e.g. smart key system)
can be changed.
(Customizable features: P.544)
If the smart key system has been
deactivated in a customized setting,
refer to the explanations for the fol-
lowing operations.
●Locking and unlocking the doors:
Use the wireless remote control or
mechanical key. ( P.132, 504)
●Starting the hybrid system and
changing power switch modes:
P.505
●Stopping the hybrid system:
P.233
WARNING
■Caution regarding interfer-
ence with electronic devices
●People with implantable car-
diac pacemakers, cardiac
resynchronization therapy-
pacemakers or implantable car-
dioverter defibrillators should
maintain a reasonable distance
between themselves and the
smart key system antennas.
( P.164)
The radio waves may affect the
operation of such devices. If
necessary, the e ntry function
can be disabled. Ask your
Toyota dealer for details, such
as the frequency of radio waves
and timing of the emitted radio
waves. Then, consult your doc-
tor to see if you should disable
the entry function.
●Users of any electrical medical
device other than implantable
cardiac pacemakers, cardiac
resynchronization therapy-
pacemakers or implantable car-
dioverter defibrillators should
consult the manufacturer of the
device for information about its
operation under the influence of
radio waves.
Radio waves could have unex-
pected effects on the operation
of such medical devices.
Ask your Toyota dealer for details
on disabling the entry function.

1693-3. Adjusting the seats
3
Before driving
3-3.Adjusting the seats
Manual seat (passenger’s
side only)Seat position adjustment
lever
Seatback angle adjustment
lever
Power seatSeat position adjustment
switch
Seatback angle adjustment
switch
Seat cushion (front) angle
adjustment switch (driver’s
side only)
Vertical height adjustment
switch (driver’s side only)
Lumbar support adjustment
switch (driver’s side only) (if
equipped)
Pelvic support adjustment
(driver’s side only) (if
equipped)
■When adjusting the seat
●Make sure that any surrounding
passengers or objects are not
contacting the seat.
●Take care when adjusting the seat
so that the head restraint does not
touch the ceiling.
Front seats
The seats can be adjusted
(longitudinally, vertically,
etc.). Adjust the seat to
ensure the correct driving
posture.
Adjustment procedure
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B
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D
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1703-3. Adjusting the seats
■Power easy access system (if
equipped)
The driver’ seat and steering wheel
move in accordance with power
switch mode and the driver’ seat
belt condition. ( P.178)
■Jam protection function (vehi-
cles with driving position mem-
ory)
While the driving position is recalled
or the power easy access system is
operating, if an object is stuck
behind the front sea t, the front seat
will stop and then slightly move for-
ward.
When the jam protection function
operates, the seat stops at a posi-
tion other than the set seat position.
Check the seat position.
WARNING
■When adjusting the seat posi-
tion
●Take care when adjusting the
seat position to ensure that
other passengers are not
injured by the moving seat.
●Do not put your hands under the
seat or near the moving parts to
avoid injury.
Fingers or hands may become
jammed in the seat mechanism.
●Make sure to leave enough
space around the feet so they
do not get stuck.
■Seat adjustment
●To reduce the risk of sliding
under the lap bel t during a colli-
sion, do not recline the seat
more than necessary.
If the seat is too reclined, the lap
belt may slide past the hips and
apply restraint forces directly to
the abdomen, or your neck may
contact the shoulder belt,
increasing the risk of death or
serious injury in the event of an
accident.
Adjustments should not be
made while driving as the seat
may unexpectedly move and
cause the driver to lose control
of the vehicle.
●Manual seat only: After adjust-
ing the seat, make sure that the
seat is locked in position.

1783-3. Adjusting the seats
*: If equipped
When all of the following have
been performed, the driver’s
seat and steering wheel are
automatically adjusted to a posi-
tion that allows driver to enter
and exit the vehicle easily.
NOTICE
■Stowing the seat belt
The seat belts and the buckles
must be stowed before you fold
down the rear seatbacks.
Driving position mem-
ory*
This feature automatically
adjusts the positions of the
driver’s seat, steering
wheel, outside rear view
mirrors and head-up display
(if equipped) to make enter-
ing and exiting the vehicle
easier or to suit your prefer-
ences.
Two different driving posi-
tions can be recorded into
memory.
Each electronic key can be
registered to recall your pre-
ferred driving position.
Enabling easier driver
entry and exit (power easy
access system)

1793-3. Adjusting the seats
3
Before driving
The shift lever has been
shifted to P.
 The power switch has been
turned off.
 The driver’ seat belt has been
unfastened.
When any of the following has
been performed, the driver’ seat
and steering wheel automati-
cally return to their original posi-
tions.
 The power switch has been
turned to ACC or ON.
 The driver’ seat belt has been
fastened.
■Recording procedure
1 Check that the shift lever is in
P.
2 Turn the power switch to ON.
3 Adjust the driver’s seat,
steering wheel, outside rear
view mirrors and head-up
display (if equipped) to the
desired positions.
4 While pressing the “SET” but-
ton, press button “1” or “2”
until the buzzer sounds.
If the selected button has already
been preset, the previously
recorded position will be overwrit- ten.
■Recall procedure
1 Check that the shift lever is in
P.
2 Turn the power switch to ON.
3 Press one of the buttons for
the driving position you want
to recall until the buzzer
sounds.
■To stop the position recall oper-
ation part-way through
Perform any of the following:
●Press the “SET” button.
●Press button “1” or “2”.
●Operate any of t he seat adjust-
ment switches (only cancels seat
position recall).
●Operate the tilt and telescopic
steering control switch (only can-
cels steering wheel position
recall).
Recording/recalling a
driving position