2021 TOYOTA SIENNA HYBRID Owners Manual (in English)

1283-1. Key information
3-1.Key information
The following keys are provided
with the vehicle.Electronic keys
• Operating the smart key system ( P.164)
• Operating the wireless remote control function ( P.130)
Mechanical keys
Key number plate
■When riding in an aircraft
When bringing a key with wireless
remote control function onto an air-
craft, make sure y ou do not press
any buttons on the key while inside
the aircraft cabin. If you are carrying
the key in your bag etc., ensure that
the buttons are not likely to be
pressed accidentally. Pressing a
button may cause the key to emit
radio waves that could interfere with
the operation of the aircraft.
■Key battery depletion
●The standard battery life is 1 to 2
years.
●If the battery becomes low, an
alarm will sound in the cabin and a
message will be dis played on the
multi-information display when the
hybrid system stops.
●To reduce key battery depletion
when the electronic key is to not
be used for long periods of time,
set the electronic key to the bat-
tery-saving mode. ( P.166)
●As the electronic key always
receives radio waves, the battery
will become depleted even if the
electronic key is not used. The fol-
lowing symptoms indicate that the
electronic key battery may be
depleted. Replace the battery
when necessary.
• The smart key system or the wire-
less remote contro l does not oper-
ate.
• The detection area becomes
smaller.
• The LED indicator on the key sur- face does not turn on.
You can replace the battery by your-
self ( P.447). However, as there is
a danger that the electronic key may
be damaged, it is recommended
that replacement is carried out by
your Toyota dealer.
●To avoid serious deterioration, do
not leave the electronic key within
3 ft. (1 m) of the following electri-
cal appliances that produce a
magnetic field:
•TVs
• Personal computers
• Cellular phones, cordless phones and battery chargers
• Table lamps
• Induction cookers
●If the electronic key is near the
vehicle for longer than necessary,
even if the smart key system is not
used, the key battery may become
depleted faster than normal.
When not using the smart key sys-
tem, it is recommended not to stay
with the electronic key near the
vehicle longer than necessary.
■If a message regarding the state
of the electronic key or power
switch mode, e tc. is shown
To prevent trapping the electronic
Keys
Key types
A
B
C

1293-1. Key information
3
Before driving
key inside the vehicle, leaving the
vehicle carrying the electronic key
on your person without turning the
power switch to OFF or other pas-
sengers from unintentionally taking
the key out of the vehicle, etc., a
message that prompts the user to
confirm the state of the electronic
key or power switch mode may be
shown on the multi -information dis-
play. In those cases, follow the
instructions on the display immedi-
ately.
■If “Key Battery Low Replace
Key Battery” is displayed on
the multi-information display
The electronic key has a low bat-
tery. Replace the electronic key bat-
tery. ( P.447)
■Replacing the battery
 P.447
■Confirmation of the registered
key number
The number of keys already regis-
tered to the vehicle can be con-
firmed. Ask your Toyota dealer for
details.
■If “A New Key has been Regis-
tered Contact Your Dealer for
Details” is displayed on the
multi-information display
This message will be displayed
each time the driver’s door is
opened when the doors are
unlocked from the outside for
approximately 10 days after a new
electronic key has been registered.
If this message is displayed but you
have not had a new electronic key
registered, ask your Toyota dealer
to check if an unknown electronic
key (other than those in your pos-
session) has been registered.
NOTICE
■To prevent key damage
●Do not drop the keys, subject
them to strong shocks or bend
them.
●Do not expose the keys to high
temperatures for long periods of
time.
●Do not get the keys wet or wash
them in an ultrasonic washer,
etc.
●Do not attach m etallic or mag-
netic materials to the keys or
place the keys close to such
materials.
●Do not disassemble the keys.
●Do not attach a s ticker or any-
thing else to the surface of the
keys.
●Do not place the keys near
objects that produce magnetic
fields, such as TVs, audio sys-
tems and induction cookers.
●Do not place the keys near
medical electrical equipment
such as low-frequency therapy
equipment or microwave ther-
apy equipment, and do not
receive medical attention with
the keys on your person.
■Carrying the electronic key
on your person
Carry the electronic key 3.9 in.
(10 cm) or more away from elec-
tric appliances that are turned on.
Radio waves emitte d from electric
appliances within 3.9 in. (10 cm)
of the electronic key may interfere
with the key, cau sing the key to
not function properly.
■In case of a smart key system
malfunction or other key-
related problems
 P.504

1303-1. Key information
The keys are equipped with the
following wireless remote con-
trol:
Vehicles with power back
doorLocks all the doors ( P.132)
Unlocks all the doors
( P.132)
Opens the windows
*1 and
moon roof
*1, 2 (  P.132)
Opens and closes the right
side power sliding door
( P.137)
Opens and closes the left
side power sliding door
( P.137)
Opens and closes the power
back door ( P.153)
Sounds the alarm ( P.130)
*1: These settings must be custom-
ized at your Toyota dealer.
*2: If equipped
Vehicles without power back
door
Locks all the doors ( P.132)
Unlocks all the doors
( P.132)
Opens the windows
*1 and
moon roof
*1, 2 (  P.132)
Opens and closes the right
side power sliding door
( P.137)
Opens and closes the left
side power sliding door
( P.137)
Sounds the alarm ( P.130)
*1: These settings must be custom-
ized at your Toyota dealer.
*2: If equipped
■Theft deterrent panic mode
When is pressed for longer
than about 1 second, an alarm will
sound intermittently and the vehicle
lights will flash to deter any person
from trying to break into or damage
your vehicle.
To stop the alarm, press any button
on the electronic key.
NOTICE
■When an electronic key is lost
 P.502
Wireless remote control
A
B
C
D
E
F
G
A
B
C
D
E
F

1313-1. Key information
3
Before driving
■Conditions affecting operation
 P.166
To take out the mechanical key,
slide the release lever and
take the key out.
The mechanical key can only be
inserted in one direction, as the key
only has grooves on one side. If the
key cannot be inserted in a lock cyl-
inder, turn it over and re-attempt to
insert it.
After using the mechanical key,
store it in the electronic key. Carry
the mechanical k ey together with
the electronic key. If the electronic
key battery is dep leted or the entry
function does not operate properly,
you will need the m echanical key.
(  P.504)
■If you lose your keys
 P.502
■If a wrong key is used
The key cylinder rotates freely to
isolate inside mechanism.
Using the mechanical key
A

1323-2. Opening, closing and locking the doors
3-2.Opening, closing and locking the doors
■Using the entry function (if
equipped)
Carry the electronic key to
enable this function.
1 Grip the driver’s door handle
to unlock the door. Holding
the driver’s door handle for
approximately 2 seconds
unlocks all the doors.
Grip the front passenger’s
door handle to unlock all the
doors
*.
Make sure to touch the sensor on
the back of the handle.
The doors cannot be unlocked for 3
seconds after the doors are locked.
*: The door unlock settings can be
changed. ( P.133)
2 Touch the lock sensor (the indentation on the upper part
of the door handle) to lock
the doors.
Check that the d
oor is securely
locked.
■Using the wireless remote
control
Vehicles with power back
door
1 Locks all the doors
Check that the d oor is securely
locked.
2 Unlocks all the doors
Pressing the button unlocks the
driver’s door. Pressing the button
again within 5 seconds unlocks the
other doors.
Press and hold to open the win-
dows
*1 and moon roof*1, 2
*1
: This setting must be customized at your Toyo ta dealer.
*2: If equipped
Front doors
The vehicle can be locked
and unlocked using the
entry function (if equipped),
wireless remote control, key
or door lock switch.
Unlocking and locking the
doors from the outside

1333-2. Opening, closing and locking the doors
3
Before driving
Vehicles without power back
door
1 Locks all the doors
Check that the door is securely
locked.
2Unlocks all the doors
Pressing the button unlocks the
driver’s door. Pressing the button
again within 5 seconds unlocks the
other doors.
Press and hold to open the win-
dows
*1 and moon roof*1, 2
*1
:This setting mu st be customized
at your Toyota dealer.
*2: If equipped
■Using the key
The doors can also be locked
and unlocked with the mechani-
cal key. ( P.504)
■Switching the door unlock func-
tion (vehicles with entry func-
tion)
It is possible to set which doors the
entry function unlocks using the
wireless remote control. Perform the
switching operation in the vehicle or
within approximately 3.2 ft. (1 m) of
the vehicle.
1 Turn the power switch to OFF.
2 When the indicator light on the
key surface is not on, press and
hold , , , or for approximately 5 sec-
onds while pressing and holding
.
The setting changes each time an
operation is per formed, as shown
below. (When changing the setting
continuously, release the buttons,
wait for at least 5 seconds, and
repeat step 2 .)
Vehicles with alarm: To prevent
unintended triggeri ng of the alarm,
unlock the doors using the wireless
remote control and open and close
a door once after the settings have
been changed. (If a door is not
opened within 60 seconds after
is pressed, the doors will be
locked again and the alarm will
automatically be set.)
In a case that the alarm is triggered,
immediately stop the alarm.
(  P.89)
Multi-informa-
tion dis-
play/BeepUnlocking func- tion
Exterior: Beeps 3 times
Interior: Pings once
Holding the
driver’s door han-
dle unlocks only
the driver’s door.
Holding the pas-
senger’s door
handle unlocks all
the doors.
Exterior: Beeps twice
Interior: Pings once
Holding a door
handle unlocks all
the doors.

1343-2. Opening, closing and locking the doors
■Impact detection door lock
release system
In the event that t he vehicle is sub-
ject to a strong impact, all the doors
are unlocked. Depending on the
force of the impact or the type of
accident, however, the system may
not operate.
■Operation signals (vehicles
with entry function)
A buzzer sounds and the emer-
gency flashers flash to indicate that
the doors have been
locked/unlocked . (Locked: Once;
Unlocked: Twice)
■Security feature
If a door is not opened within
approximately 60 seconds after the
vehicle is unlocked, the security fea-
ture automatically locks the vehicle
again. (Vehicles with entry function:
However, depending on the location
of the electronic key, the key may
be detected as being in the vehicle.
In this case, vehicle may be
unlocked.)
■When the door cannot be
locked by the lock sensor on
the upper part of the door han-
dle (vehicles with entry func-
tion)
If the door will no t lock even when
the topside sensor area is touched,
try touching both the topside and
underside sensor areas at the same
time. When gloves are being worn,
remove the gloves.
■Door lock buzzer
If an attempt to lock the doors using
the entry function or wireless remote
control is made w hen a door is not fully closed, a buzzer sounds contin-
uously for 5 seconds. Fully close the
door to stop the buzzer, and lock the
vehicle once more.
■Setting the alarm (if equipped)
Locking the doors will set the alarm
system. ( P.89)
■Conditions affecting the opera-
tion of the smart key system or
wireless remote control
 P.166
■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.504)
●Replace the key battery with a
new one if it is depleted. ( P.447)
■If the 12-volt b attery is dis-
charged
The doors cannot be locked and
unlocked using the smart key sys-
tem or wireless remote control. Lock
or unlock the do ors using the
mechanical key. ( P.133, 504)
■Rear seat reminder function
●In order to r emind you not to for-
get the luggage, etc. on the rear
seat, when the power switch is
turned to OFF afte r any of the fol-
lowing conditions are met, a
buzzer will sound and a message
will be displayed on the multi-
information display for approxi-
mately 6 seconds.
• The hybrid system is started within 10 minutes after opening
and closing a sliding door.
• A sliding door has been opened and closed after the hybrid system
is started. However, if a sliding
door is opened and then closed
within approximately 2 seconds,
the rear seat rem inder function
may not operate.
●The rear seat reminder function
determines that t he luggage, etc.
has been placed on the rear seat
depending on opening and closing

1353-2. Opening, closing and locking the doors
3
Before driving
of a sliding door. Therefore,
depending on the situation, the
rear seat reminder function may
not operate and you may still for-
get the luggage, etc. on the rear
seat, or it may operate unneces-
sarily.
●The rear seat reminder function
can be enabled/disabled.
(  P.541)
■Customization
Settings (e.g. unlocking function
using a key) can be changed.
(Customizable features: P.543)
■Using the door lock
switches
1 Locks all the doors
2 Unlocks all the doors
■Using the inside lock but-
tons
1 Locks the door
2 Unlocks the door
The front doors can be opened by
pulling the inside handle even if the
lock buttons are in the lock position.
■Locking the front doors from
the outside without a key
1 Move the inside lock button to
the lock position.
2 Close the door.
The door cannot be locked if the
power switch is in ACC or ON, or
the electronic key is left inside the
WARNING
■To prevent an accident
Observe the following precautions
while driving t he vehicle.
Failure to do so m ay result in a
door opening and an occupant
could be thrown out of the vehicle,
resulting in dea th or serious
injury.
●Ensure that all doors are prop-
erly closed and locked.
●Do not pull the inside handle of
the doors while driving.
Be especially careful for the
front doors, as the doors may
be opened even if the inside
lock buttons are in locked posi-
tion.
■When opening or closing a
door
Check the surroundings of the
vehicle such as whether the vehi-
cle is on an incline, whether there
is enough space for a door to
open and whether a strong wind
is blowing. When opening or clos-
ing the door, hold the door handle
tightly to prepare for any unpre-
dictable movement.
Unlocking and locking the
doors from the inside