TOYOTA SIENNA HYBRID 2022 Owners Manual

2304-1. Before driving
Avoid jerky starts or sudden
acceleration.
 Avoid jerky steering and
sharp turns, and slow down
before making turn.
 Note that when making a turn,
the trailer wheels will be
closer than the vehicle wheels
to the inside of the turn. Com-
pensate by making a wider
than normal turning radius.
 Slow down before making a
turn, in cross winds, on wet or
slippery surfaces, etc.
Increasing vehicle speed can
destabilize the trailer.
Take care when passing other
vehicles. Passing requires
considerable distance. After
passing a vehicle, do not for-
get the length of your trailer,
and be sure you have plenty
of room before changing
lanes.
 To maintain engine braking
efficiency and charging sys-
tem performance, when using
engine braking, do not use
the transmission in D.
 Instability happens more fre-
quently when descending
steep or long downhill grades.
Before descending, slow
down and downshift. Do not
make sudden downshifts
while descending steep or
long downhill grades.
 Avoid holding the brake pedal down too long or applying the
brakes too frequently. This
could cause the brakes to
overheat and result in
reduced braking efficiency.
 Due to the added load of the
trailer, your vehicle’s hybrid
system may overheat on hot
days (at temperatures over
85°F [30°C]) when driving up
a long or steep grade. If the
engine coolant temperature
gauge indicates overheating,
immediately turn off the air
conditioning (if in use), pull
your vehicle off the road and
stop in a safe spot. ( P.509)
 Always place wheel blocks
under both the vehicle’s and
the trailer’s wheels when
parking. Apply the parking
brake firmly, and put the
transmission in P. Avoid park-
ing on a slope, but if unavoid-
able, do so only after
performing the following:
1 Apply the brakes and keep
them applied.
2 Have someone place wheel
blocks under both the vehi-
cle’s and trailer’s wheels.
3 When the wheel blocks are in
place, release the brakes
slowly until the blocks absorb
the load.
4 Apply the parking brake
firmly.

2314-1. Before driving
4
Driving
5Shift into P and turn off the
hybrid system.
 When restarting after parking
on a slope:
1 With the transmission in P,
start the hybrid system. Be
sure to keep the brake pedal
depressed.
2 Shift into a forward gear. If
reversing, shift into R.
3 If the parking brake is in man-
ual mode, release the park-
ing brake. ( P.245)
4 Release the brake pedal, and
slowly pull or back away from
the wheel blocks. Stop and
apply the brakes.
5 Have someone retrieve the
blocks.
■Break-in schedule
If your vehicle is new or equipped
with any new power train compo-
nents (such as an engine, transmis-
sion, differential or wheel bearing),
Toyota recommends that you do not
tow a trailer unt il the vehicle has
been driven for over 500 miles (800
km).
After the vehicle has been driven for
over 500 miles (800 km), you can
start towing. However, for the next
500 miles (800 km), drive the vehi-
cle at a speed of less than 45 mph
(72 km/h) when towing a trailer, and
avoid full throttle acceleration.
■Maintenance
●If you tow a traile r, your vehicle
will require more f requent mainte-
nance due to the additional load.
(See “Scheduled Maintenance
Guide” or “Owner’s Manual Sup-
plement”.)
●Retighten the fixing bolts of the
towing ball and bracket after
approximately 600 miles (1000
km) of tra iler towing.
■If trailer sway occurs
One or more factors (crosswinds,
passing vehicles, rough roads, etc.)
can adversely affect handling of
your vehicle and t railer, causing
instability.
●If trailer swaying occurs:
• Firmly grip the steering wheel. Steer straight ahead.
Do not try to contr ol trailer sway-
ing by turning the steering wheel.
• Begin releasing the accelerator pedal immediately but very gradu-
ally to reduce speed.
Do not increase speed. Do not
apply vehicle brakes.
If you make no extreme correction
with the steering or brakes, your
vehicle and trailer should stabilize (if
enabled, Trailer Sway Control can
also help to stabilize the vehicle and
trailer.).
●After the trailer swaying has
stopped:
• Stop in a safe place. Get all occu- pants out of the vehicle.
• Check the tires of the vehicle and the trailer.
• Check the load in the trailer.
Make sure the load has not
shifted.
Make sure the tongue weight is
appropriate, if possible.
• Check the load in the vehicle. Make sure the vehicle is not over-
loaded after occupants get in.
If you cannot find any problems, the
speed at which trailer swaying
occurred is beyond the limit of your
particular vehicle-trailer combina-
tion. Drive at a lower speed to pre-
vent instability. Remember that
swaying of the towing vehicle-trailer
increases as speed increases.

2324-1. Before driving
Dinghy towing
Your vehicle is not designed
to be dinghy towed (with 4
wheels on the ground)
behind a motor home.
NOTICE
■To avoid serious damage to
your vehicle
Do not tow your vehicle with 4
wheels on the ground.
■To prevent causing serious
damage to the transmission
and AWD system.
2WD models: Never tow this vehi-
cle from the rear with the front
wheels on the ground. This may
cause serious damage to the
transmission.
AWD models: Never tow this vehi-
cle with any of t he wheels on the
ground. This may cause serious
damage to the transmission and
AWD system.

2334-2. Driving procedures
4
Driving
4-2.Driving procedures
1Pull the parking brake switch
to check that the parking
brake is set. ( P.245)
The parking brake indicator will
come on.
2Check that the shift lever is
set in P.
3 Firmly depress the brake
pedal.
and a message will be dis-
played on the multi-information dis-
play.
If it is not displayed, the hybrid sys-
tem cannot be started.
4 Press the power switch
shortly and firmly.
When operating the power switch,
one short, firm press is enough. It is
not necessary to press and hold the
switch.
If the “READY” indicator turns on,
the hybrid system will operate nor-
mally.
Continue depressing the brake
pedal until the “READY” indicator is
illuminated.
The hybrid system can be started from any power switch mode.
5
Check that the “READY” indi-
cator is illuminated.
The vehicle will not move when the
“READY” indicator is off.
■Power switch illumination
According to the situation, the
power switch illu mination operates
as follows.
●When driver’s door or front pas-
senger’s door is opened, the
power switch illu mination illumi-
nates.
●When the power switch is in OFF
and depressing t he brake pedal
with carrying the electronic key on
your person, the power switch illu-
mination blinks.
●When the power switch is in ACC
or ON, the power switch illumina-
tion illuminates.
●When the power switch mode is
changed from ACC or ON to OFF,
the power switch illumination illu-
minates for a certain amount of
time. Afterwards, the power switch
illumination turns off.
■If the hybrid system does not
start
●The immobilizer system may not
have been deactivated. ( P.88)
Contact your Toyota dealer.
●If a message related to start-up is
shown on the multi-information
display, read the message and fol-
low the instructions.
Power (ignition)
switch
Performing the following
operations when carrying
the electronic key on your
person starts the hybrid
system or changes power
switch modes.
Starting the hybrid sys-
tem

2344-2. Driving procedures
■When the ambient temperature
is low, such as during winter
driving conditions
When starting the hybrid system,
the flashing time of the “READY”
indicator may be long. Leave the
vehicle as it is u ntil the “READY”
indicator is steady on, as steady
means the vehicle is able to move.
■Sounds and vibrations specific
to a hybrid vehicle
 P.81
■If the 12-volt battery is dis-
charged
The hybrid system cannot be
started using the smart key system.
Refer to P.504to restart the hybrid
system.
■Electronic key battery depletion
 P.128
■Conditions affecting operation
 P.166
■Note for the entry function
 P.167
■If there is a mal function in the
smart key system
If “Smart Key System Malfunction
See Owner’s Manual” is displayed
on the multi-informat ion display, the
system may be malfunctioning.
Have the vehicle inspected by your
Toyota dealer immediately.
■If the “READY” indicator does
not come on
In the event that the “READY” indi-
cator does not come on even after
performing the proper procedures
for starting the vehicle, contact your
Toyota dealer immediately.
■If the hybrid system is malfunc-
tioning
 P.86
■When “Check Fuel Cap” is dis-
played on the multi-information
display
 P.263
■Electronic key battery
 P.444
■Operation of the power switch
●If the switch is not pressed shortly
and firmly, the power switch mode
may not change o r the hybrid sys-
tem may not start.
●If attempting to restart the hybrid
system immediately after turning
the power switch to OFF, the
hybrid system may not start in
some cases. Aft er turning the
power switch to OFF, please wait
a few seconds before restarting
the hybrid system.
■Customization
If the smart key system has been
deactivated in a customized setting,
refer to P.503.
WARNING
■When starting the hybrid sys-
tem
Always start the hybrid system
while sitting in the driver’s seat.
Do not depress t he accelerator
pedal while starting the hybrid
system under any circumstances.
Doing so may cause an accident
resulting in dea th or serious
injury.
NOTICE
■When starting the hybrid sys-
tem
If the hybrid system becomes diffi-
cult to start, have your vehicle
checked by your Toyota dealer
immediately.

2354-2. Driving procedures
4
Driving
1Stop the vehicle completely.
2 If the parking brake is in man-
ual mode, set the parking
brake. ( P.245)
Check the parking brake indicator
is illuminated.
3 Shift the shift lever to P.
( P.241)
4 Press the power switch
shortly and firmly.
The hybrid system will stop, and the
meter display will be extinguished.
Release the shift lever when press-
ing the power switch.
5Release the brake pedal and
check that “ACCESSORY” or
“IGNITION ON” is not shown
on the multi-information dis-
play.
■Automatic hybrid system shut
off feature
●The vehicle is equipped with a
feature that automatically shuts off
the hybrid system when the shift
lever is in P with the hybrid system
operating for an extended period.
●The hybrid system will automati- cally shut off after approximately 1
hour if it has been left operating
while the shift lever is in P.
●The message asking if you wish to
enable/disable t
he automatic
hybrid syste m shut off feature will
sometimes be displayed on the
multi-information display. Leaving
the vehicle as is or selecting “Per-
form Auto Off” k eeps the auto-
matic hybrid system shut off
feature enabled, or selecting
“Keep Vehicle On” disables the
automatic hybrid system shut off
feature.
●The timer for the automatic hybrid
system shut off feature will reset if
the brake pedal is depressed or if
the shift lever is in a position other
than P.
●After the vehicle is parked, if the
door is locked with the door lock
switch ( P.135) from the inside
or the mechanical key ( P.502)
from the outside , the automatic
hybrid syste m shut off feature will
be disabled. The timer for the
automatic hybrid system shut off
feature will be re-enabled if the
driver’s door is opened.
NOTICE
■Symptoms indicating a mal-
function with the power
switch
If the power switch seems to be
operating somewhat differently
than usual, such as the switch
sticking slightly, there may be a
malfunction. Contact your Toyota
dealer immediately.
Stopping the hybrid sys-
tem

2364-2. Driving procedures
Modes can be changed by
pressing the power switch with
the brake pedal released. (The
mode changes each time the
switch is pressed.)
WARNING
■Stopping the hybrid system
in an emergency
●If you want to stop the hybrid
system in an emergency while
driving the vehicle, press and
hold the power switch for more
than 2 seconds, or press it
briefly 3 times or more in suc-
cession. (P.457)
However, do not touch the
power switch while driving
except in an emergency. Turn-
ing the hybrid system off while
driving will not cause loss of
steering or braking control.
However, power assist for the
steering wheel may be lost mak-
ing it difficult to steer smoothly
before stopping the vehicle
depending on the remaining
charge in the 12-volt battery or
usage conditions. In this situa-
tion, you should pull over and
stop the vehicle as soon as it is
safe to do so.
●If the power switch is operated
while the vehicle is running, a
warning message will be shown
on the multi-info rmation display
and a buzzer sounds.
●When restarting the hybrid sys-
tem after an emergency shut-
down, shift the shift lever to N
and press the power switch
shortly and firmly.
■When parking
Exhaust gases include harmful
carbon monoxide (CO), which is
colorless and odorless. Observe
the following precautions.
Failure to do so may cause
exhaust gases to enter the vehicle
and may lead to an accident
caused by light-headedness, or
may lead to death or a serious
health hazard.
●If the vehicle is in a poorly venti-
lated area or a closed area,
such as a garage, stop the
hybrid system.
●Do not leave the vehicle with
the hybrid system operating for
a long time. If such a situation
cannot be avoided, park the
vehicle in an open space and
ensure that exhaust fumes do
not enter the ve hicle interior.
●Do not leave the hybrid system
operating in an area with snow
build-up, or where it is snowing.
If snowbanks build up around
the vehicle while the hybrid sys-
tem is operating, exhaust gases
may collect and enter the vehi-
cle.
Changing power switch
modes

2374-2. Driving procedures
4
Driving
1OFF*
The emergency flashers can be
used.
2ACC
Some electrical components such
as the audio system can be used.
“ACCESSORY” will be displayed
on the multi-info rmation display.
3ON
All electrical com ponents can be
used.
“IGNITION ON” will be displayed on
the multi-inform ation display.
*: If the shift lever is in a position
other than P when turning off the
hybrid system, the power switch
will remain ON, will not turn to
OFF.
■Auto power off function
●If the vehicle is left in ACC or ON
(the hybrid system is not operat-
ing) for more than 20 minutes with
the shift lever in P, the power
switch will automatically turn to
OFF.
●If the 12-volt battery is low with the
shift lever is in P and the power
switch is in ACC or ON (the hybrid
system is not operating), a buzzer sounds and a message will be dis-
played on the multi-information
display. If this continues, the
power switch is automatically turn
to OFF.
However, this function cannot
entirely prevent the 12-volt battery
discharge. Do not leave the vehi-
cle with the power switch in ACC
or ON for long periods of time
when the hybrid system is not
operating.
If the hybrid system is stopped
with the shift lever in a position
other than P, the power switch
will not be turned to OFF but
instead be turned to ACC. Per-
form the following procedure to
turn the switch to OFF:
1
Check that the parking brake
is set.
2 Shift the shift lever to P.
3 Check that “Turn Power Off”
is displayed on the multi-
information display and press
NOTICE
■To prevent 12-volt battery dis-
charge
●Do not leave the power switch
in ACC or ON for long periods of
time without the hybrid system
on.
●If “ACCESSORY” or “IGNITION
ON” is displayed on the multi-
information display, the power
switch is not in OFF. Exit the
vehicle after turning the power
switch to OFF.
When stopping the hybrid
system with the shift lever
in a position other than P

2384-2. Driving procedures
the power switch shortly and
firmly.
4 Check that “Turn Power Off”
on the multi-information dis-
play is off.
Turns EV drive mode on/off
When EV drive mode is turned on,
the EV drive mode indicator will
come on. Pressing the switch when
in EV drive mode will return the
vehicle to normal driving (using the
gasoline engine and electric motor
[traction motor]).
NOTICE
■To prevent 12-volt battery dis-
charge
Do not stop the hybrid system
when the shift lever is in a position
other than P. If the hybrid system
is stopped in another shift lever
position, the powe r switch will not
be turned to OFF but instead
remain ON. If the vehicle is left in
ON, 12-volt batte ry discharge
may occur.
EV drive mode
In EV drive mode, electric
power is supplied by the
hybrid battery (traction bat-
tery), and only the electric
motor (traction motor) is
used to drive the vehicle.
This mode allows you to
drive in residential areas
early in the morning and
late at night, or in indoor
parking lots etc. without
concern for noises and gas
emissions.
However, when the Acous-
tic Vehicle Alerting System
is active, the vehicle may
produce sound.
Operating instructions

2394-2. Driving procedures
4
Driving
■Situations in which EV drive
mode cannot be turned on
It may not be po ssible to turn EV
drive mode on in t he following situa-
tions. If it cannot be turned on, a
buzzer will sound and a message
will be shown on the multi-informa-
tion display.
●The temperature of the hybrid sys-
tem is high.
The vehicle has been left in the
sun, driven on a hill, driven at high
speeds, etc.
●The temperature of the hybrid sys-
tem is low.
The vehicle has been left in tem-
peratures lower than about 32°F
(0°C) for a long period of time etc.
●The gasoline engine is warming
up.
●The hybrid battery (traction bat-
tery) is low.
The remaining batt ery level indi-
cated in the Energy monitor dis-
play is low. ( P.122)
●Vehicle speed is high.
●The accelerator pedal is
depressed firmly or the vehicle is
on a hill etc.
●The windshield defogger is in use.
Use the EV drive mode when it
becomes available.
■Switching to EV drive mode
when the gasoline engine is
cold
If the hybrid system is started while
the gasoline engine is cold, the gas-
oline engine will star t automatically
after a short peri od of time in order
to warm up.
In this case, you will become unable
t o s w i t c h t o E V d r i v e m o d e . A f t e r t h e
hybrid system has started and the
“READY” indicator has illuminated,
press the EV drive mode switch
before the gasoline engine starts to
switch to EV drive mode.
■Automatic cancelation of EV
drive mode
When driving in EV drive mode, the
gasoline engine may automatically
restart in the follo wing situations.
When EV drive mode is canceled, a
buzzer will sound, the EV drive
mode indicator will flash and go off
and a message will be shown on the
multi-informat ion display.
●The hybrid battery (traction bat-
tery) becomes low.
The remaining batt ery level indi-
cated in the Ener gy monitor dis-
play is low. ( P.122)
●Vehicle speed is high.
●The accelerator pedal is
depressed firmly or the vehicle is
on a hill etc.
Drive the vehicle for a while before
attempting to turn on the EV drive
mode again.
■Possible driving distance when
driving in EV drive mode
EV drive mode’s possible driving
distance ranges from a few hundred
meters to approximately 0.6 mile (1
km). However, depending on vehi-
cle conditions, there are situations
when EV drive mode cannot be
used.
(The distance tha t is possible
depends on the hybrid battery [trac-
tion battery] level a nd driving condi-
tions.)
■Fuel economy
The hybrid system is designed to
achieve the best possible fuel econ-
omy during normal driving (using
the gasoline engine and electric
motor [traction motor]). Driving in
EV drive mode more than neces-
sary may lower fuel economy.
■If “EV Mode Unavailable” is
shown on the multi-information
display
The EV drive mode is not available.
The reason the EV drive mode is
not available (the vehicle is idling,