TOYOTA SIENNA HYBRID 2021 Owners Manual (in English)

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

1363-2. Opening, closing and locking the doors
vehicle.
Depending on the position of the
electronic key, the key may not be
detected correctly and the door may
be locked.
■Open door warning buzzer
If the vehicle speed reaches 3 mph
(5 km/h), a buzzer sounds to indi-
cate that the door(s) or the hood is
not fully closed.
The open door(s) or hood is dis-
played on the multi-information dis-
play.
■When all the doors are locked
with the entry function, wireless
remote control or key
●The doors cannot be unlocked
with the door lock switch.
●The door lock switch can be reset
by unlocking all the doors with the
entry function, wireless remote
control or key.
The following functions can be
set or canceled:
For instructions on customizing,
refer to P.540.
Automatic door locking
and unlocking systems
FunctionOperation
Speed linked
door locking
function
All doors are
automatically
locked when
vehicle speed is
approximately
12mph (20 km/h)
or higher.
Shift position
linked door lock-
ing function
All doors are
automatically
locked when
shifting the shift
lever to position
other than P.
Shift position
linked door
unlocking func-
tionAll doors are
automatically
unlocked when
shifting the shift
lever to P.
Driver’s door
linked door
unlocking func-
tion
All doors are
automatically
unlocked when
driver’s door is
opened within
approximately 45
seconds after
turning the power
switch off.

1373-2. Opening, closing and locking the doors
3
Before driving
Sliding doors
The sliding doors can be
unlocked/locked and
opened/closed by the fol-
lowing procedures.
WARNING
■Before driving
Make sure that all doors are prop-
erly closed and locked. If the slid-
ing doors are not fully closed, it
may open unexpectedly while
driving and an occupant to fall out
of the vehicle, resulting in death
or serious injury.
■Caution while driving
Observe the following precautions
while driving. Failure to do so may
cause a door to open unexpect-
edly and an occupant to fall out of
the vehicle, resulting in death or
serious injury.
●Make sure that all doors are
properly closed and locked.
●Set the sliding door child-pro-
tector locks when children are
seated in the vehicle.
●Do not operate the inside han-
dle of the doors while driving.
■When children ar e in the vehi-
cle
Observe the following precau-
tions. Failure to do so may result
in death or serious injury.
●Do not leave children alone in
the vehicle. If a child is acciden-
tally locked in t he vehicle, they
could have heat exhaustion or
other injuries.
●Do not allow a child to open or
close the sliding door. Doing so
may cause the sliding door to
move unexpectedly, or cause
the child’s hands, head, or neck
to be caught by the moving slid-
ing door.
■Operating the sliding doors
Observe the following precau-
tions. Failure to do so may cause
parts of the body to be caught,
resulting in dea th or serious
injury.
●When opening or closing a slid-
ing door, thoroughly check to
make sure the surrounding area
is safe.
●When opening or closing the
sliding doors with windows
open, keep all body parts clear
of the windows.
●If anyone is in the vicinity, make
sure they are safe and let them
know that the sliding door is
about to open or close.
●Do not leave the sliding door at
half-opened position because
the sliding door is not latched at
this position. The sliding door
may move unexpectedly on an
incline.
●When the vehicle is stopped on
a slope, the door will slide faster
when opening or closing, so be
especially careful that the pas-
sengers do not get hit or
pinched by the door.

1383-2. Opening, closing and locking the doors
■Using the entry function (if
equipped)
 P.132
■Using the wireless remote
control
 P.130
■Using the door lock
switches
 P.135
■Using the inside lock but-
tons
1 Locks the door
2 Unlocks the door
WARNING
●Open the sliding door fully while
passengers are getting on or off
on a downward slope. Do not
operate the outside handle or
inside handle while the door is
open as the door could sud-
denly close by itself causing
injury.
●When opening or closing the
sliding door, take extra care to
prevent your fingers etc. from
being caught.
●Do not put your hands or feet on
the sliding door arms, rails and
pillars. Be careful not to get your
hands or feet caught in the slid-
ing doors.
Unlocking and locking the
sliding door from outside
Unlocking and locking the
sliding door from inside

1393-2. Opening, closing and locking the doors
3
Before driving
■Using wireless remote con-
trol
Vehicles with power back
door
Press and hold to open and
close the right side power
sliding door
Press and hold to open and
close the left side power slid-
ing door
Unlock the sliding door before oper-
ating.
Vehicles without power back
doorPress and hold to open and
close the right side power
sliding door
Press and hold to open and close the left side power slid-
ing door
Unlock the sliding door before oper-
ating.
■Using the outside sliding
door handles
1 Press the switch to
open/close the power sliding
door.
When the sliding door is locked:
Press the switch while carrying the
electronic key on your person.
Then, all the door s will unlock and
the power sliding door will be auto-
matically and completely opened.
Press the switch within detection
area of the electronic key.
(  P.165)
When the sliding door is unlocked:
After pressing the switch even with-
out the electronic key carried on
your person, the power sliding door
will be automatically and com-
pletely opened.
2 Pull the sliding door handle to
open/close the power sliding
door. Unlock the sliding door
before operating.
Pressing the swit ch or pulling the
handle while the power sliding door
is operating will cause the opera-
tion to stop. Pressing the switch or
Opening/closing the slid-
ing door automatically
A
B
A
B