battery TOYOTA SIENNA HYBRID 2022 Owner's Guide

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.

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,

2404-2. Driving procedures
battery charge is low, vehicle speed
is higher than the EV drive mode
operating speed range or accelera-
tor pedal is depressed too much)
may be displayed. Use the EV drive
mode when it becomes available.
■If “EV Mode Deactivated” is
shown on the multi-information
display
The EV drive mode has been auto-
matically canceled. The reason the
EV drive mode is not available (the
battery charge is low, vehicle speed
is higher than the EV drive mode
operating speed range or accelera-
tor pedal is depressed too much)
may be displayed. Drive the vehicle
for a while before attempting to turn
on the EV drive mode again.
*1: To improve fuel efficiency and reduce noise, shift the shift lever
to D for normal driving.
*2: By selecting shift ranges using S mode, you can control accelerat-
ing force and engine braking
force.
■When driving with dynamic
radar cruise control with full-
speed range activated
Even when perform ing the following
actions with the intent of enabling
engine braking, engine braking will
not activate because dynamic radar
cruise control with full-speed range
will not be canceled.
●While driving in S mode, down-
shifting to 5 or 4. ( P.243)
●When switching th e driving mode
to sport mode while driving in D
position. ( P.333)
WARNING
■Caution while driving
When driving in EV drive mode,
pay special attention to the area
around the vehicle. Because
there is no engine noise, pedestri-
ans, people riding bicycles or
other people and vehicles in the
area may not be aware of the
vehicle starting off or approaching
them, so take extra care while
driving. Therefore, take extra care
while driving even if the Acoustic
Vehicle Alerting System is active.
Hybrid transmission
Select the shift position
depending on your purpose
and situation.
Shift position purpose
and functions
Shift
positionObjective or function
P
Parking the vehi-
cle/starting the hybrid system
RReversing
NNeutral
DNormal driving*1
SS mode driving*2

2414-2. Driving procedures
4
Driving
■Restraining sudden start (Drive-
Start Control)
 P.211
While the power switch
is in ON and the brake pedal
depressed
*, shift the shift lever
while pushing the shift release
button on the shift knob.
Shift the shift lever while
pushing the shift release button
on the shift knob.
Shift the shift lever nor-
mally.
When shifting the shift lever
between P and D, make sure that
the vehicle is completely stopped
and the brake pedal is depressed.
*: For the vehicle to be able to be shifted from P, the brake pedal
must be depressed before the
shift release button is pushed. If
WARNING
■When driving on slippery
road surfaces
Be careful of downshifting and
sudden acceleration, as this could
result in the vehicle skidding to
the side or spinning.
NOTICE
■Hybrid battery (traction bat-
tery) charge
If the shift lever is in N, the hybrid
battery (traction battery) will not
be charging, even when the
engine is running. Therefore, if
the vehicle is left with the shift
lever in N for a long period of
time, the hybrid battery (traction
battery) will discharge, and this
may result in the vehicle not being
able to start.
Shifting the shift lever

2514-3. Operating the lights and wipers
4
Driving
■Headlight control sensor
The sensor may not function prop-
erly if an object is placed on the sen-
sor, or anything that blocks the
sensor is affixed to the windshield.
Doing so interfere s with the sensor
detecting the level of ambient light
and may cause the automatic head-
light system to malfunction.
■Automatic light off system
●When the headlights are on: The
lights turn off 30 seconds after the
power switch is turned to ACC or
OFF and a door is opened and
closed. (The lights turn off imme-
diately if on the key is
pressed after all the doors are
closed.)
●When only the tail lights are on:
The tail lights turn off automati-
cally if the power switch is turned
to ACC or OFF and the driver’s
door is opened.
Except for Canada: To turn the
lights on again, turn the power
switch to ON, or turn the light switch
off once and the n back to or
position.
For Canada: To turn the lights on
again, turn the power switch to ON,
or turn the light s witch to once
and then back to or posi-
tion.
■Light reminder buzzer
A buzzer sounds when the power
switch is turned to ACC or OFF and
the driver’s door is opened while the
lights are turned on.
■Windshield wiper linked head-
light illumination (if equipped)
When driving during daytime with
the headlight switch turned to , if
the windshield wipers are used, the
headlights will turn o n automatically
after several se conds to help
enhance the visibility of your vehi-
cle.
■12-volt battery-saving function
In order to prevent the 12-volt bat-
tery of the vehicle from discharging,
if the headlights and/or tail lights are
on when the power switch is turned
to OFF, the battery saving function
will operate and au tomatically turn
off all the lights af ter approximately
20 minutes.
When any of the following are per-
formed, the battery-saving function
is canceled once and then reacti-
vated. All the light s will turn off auto-
matically 20 minutes after the
battery-saving function has been
reactivated:
●When the headlight switch is oper-
ated
●When a door is opened or closed
■If “Headlight System Malfunc-
tion Visit Your Dealer” is dis-
played on the multi-information
display
The system may be malfunctioning.
Have the vehicle inspected by your
Toyota dealer.
■Welcome light illumination con-
trol
The parking lights and tail lights
automatically turn on at night when
the doors are un locked using the
entry function or wireless remote
control if the light switch is in the
position.
■Customization
Settings (e.g. light sensor sensitiv-
ity) can be changed.
(Customizable features: P.546)

2524-3. Operating the lights and wipers
1With the headlights on, push
the lever away from you to
turn on the high beams.
Pull the lever toward you to the
center position to turn the high
beams off.
2Pull the lever toward you and
release it to flash the high
beams once.
You can flash the high beams with
the headlights on or off.1 Press the Automatic High
Beam switch.
NOTICE
■To prevent 12-volt battery dis-
charge
Do not leave the lights on longer
than necessary when the hybrid
system is not running.
Turning on the high beam
headlights
AHB (Automatic High
Beam)
The Automatic High Beam
uses an in-vehicle front
camera to assess the bright-
ness of streetlights, the
lights of vehicles ahead etc.,
and automatically turns the
high beam on or off as nec-
essary.
WARNING
■Limitations of the Automatic
High Beam
Do not overly rely on the Auto-
matic High Beam. Always drive
safely, taking care to observe
your surroundings and turning the
high beam on or off manually if
necessary.
■To prevent incorrect opera-
tion of the Automatic High
Beam system
Do not overload the vehicle.
Activating the Automatic
High Beam system

2564-3. Operating the lights and wipers
*: If equipped
1*1 or *2 Turns the
fog lights off
2 Turns the fog lights on
*1: For the U.S.A.
*2: For Canada
■Fog lights can be used when
The parking lights are on or the
headlights are on in low beam.
Operating the lever oper-
ates the wipers or washer as fol-
lows:
Intermittent windshield wipers
1
*1 or *2 Off
2
*1 or *2 Intermittent
operation
3
*1 or *2 Low speed
operation
Fog light switch*
The fog lights offer
improved visibility in diffi-
cult driving conditions,
such as in rain and fog.
Operating procedure
NOTICE
■To prevent 12-volt battery dis-
charge
Do not leave the lights on longer
than necessary when the hybrid
system is off.
Windshield wipers and
washer
Operating the lever can
switch between automatic
operation and manual oper-
ation, or can use the
washer.
NOTICE
■When the windshield is dry
Do not use the wipers, as they
may damage the windshield.
Operating the wiper lever