2021 TOYOTA SIENNA HYBRID park assist

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

207
4
4
Driving
Driving
4-1. Before drivingDriving the vehicle....... 208
Cargo and luggage ..... 215
Vehicle load limits ....... 218
Trailer towing (without tow- ing package).............. 219
Trailer towing (with towing package) ................... 220
Dinghy towing ............. 230
4-2. Driving procedures Power (ignition) switch 231
EV drive mode ............ 236
Hybrid transmission .... 238
Turn signal lever ......... 242
Parking brake .............. 243
Brake Hold .................. 246
4-3. Operating the lights and wipers
Headlight switch .......... 248
AHB (Automatic High Beam)........................ 250
Fog light switch ........... 254
Windshield wipers and washer....................... 254
Rear window wiper and washer....................... 257
4-4. Refueling Opening the fuel tank cap.................................. 2594-5. Using the dr
iving support
systems
Toyota Safety Sense 2.0 .................................. 262
PCS (Pre-Collision System) .................................. 267
LTA (Lane Tracing Assist) .................................. 275
RSA (Road Sign Assist) .................................. 285
Dynamic radar cruise con- trol with full-speed range
.................................. 288
BSM (Blind Spot Monitor) .................................. 299
Intuitive parking assist . 308
RCD (Rear Camera Detec- tion) function .............. 315
PKSB (Parking Support Brake) ........................ 319
Parking Support Brake func- tion (static objects) .... 323
Parking Support Brake func- tion (rear-crossing vehi-
cles) ........................... 329
Driving mode select switch .................................. 333
Driving assist systems. 335
4-6. Driving tips Hybrid vehicle driving tips.................................. 341
Winter driving tips........ 343

2084-1. Before driving
4-1.Before driving
■Starting the hybrid system
 P.231
■Driving
1 With the brake pedal
depressed, shift the shift
lever to D. ( P.238)
2 Release the parking brake.
( P.243)
If the parking brake is in automatic
mode, the parking brake is
released automatically when shift-
ing the shift lever to any position
other than P. ( P.243)
3 Gradually release the brake
pedal and gently depress the
accelerator pedal to acceler-
ate the vehicle.
■Stopping
1 With the shift lever in D,
depress the brake pedal.
2 If necessary, set the parking
brake. ( P.243)
If the vehicle is to be stopped for an
extended period of time, shift the
shift lever to P. ( P.238)
■Parking the vehicle
1 With the shift lever in D,
depress the brake pedal. 2
Set the parking brake
( P.243), and shift the shift
lever to P ( P.238).
3 Turn the power switch to
OFF to stop the hybrid sys-
tem.
4 Lock the door, making sure
that you have the key on your
person.
If parking on a hill, block the wheels
as needed.
■Starting off on a steep
uphill
1 With the brake pedal
depressed, shift the shift
lever to D. ( P.238)
2 Pull the parking brake switch
and parking brake is set
manually. ( P.243)
3 Release the brake pedal and
gently depress the accelera-
tor pedal to accelerate the
vehicle.
Parking brake automatic release
function ( P.244)
■When starting off on a uphill
The hill-start assist control will acti-
vate. ( P.335)
■For fuel-efficient driving
Keep in mind that hybrid vehicles
are similar to conventional vehicles,
and it is necessary to refrain from
activities such as sudden accelera-
tion, etc. Refer to “Hybrid vehicle
driving tips”. ( P.341)
■Driving in the rain
●Drive carefully whe n it is raining,
because visibility will be reduced,
the windows may become fogged-
up, and the road could be slip-
Driving the vehicle
The following procedures
should be observed to
ensure safe driving:
Driving procedure

2344-2. Driving procedures
the vehicle as is or selecting “Per-
form Auto Off” keeps 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.504)
from the outside, the automatic
hybrid system shut off fe ature will
be disabled. The timer for the
automatic hybrid system shut off
feature will be re-enabled if the
driver’s door is opened.
Modes can be changed by
pressing the power switch with
the brake pedal released. (The
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.459)
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, how-
ever, power assist for the steer-
ing wheel may be lost making it
difficult to steer smoothly before
stopping the vehicle depending
on the remaining charge in the
12-volt battery or usage condi-
tions. In this situation, 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-information 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

3054-5. Using the driving support systems
4
Driving
when driving on the edge of a
lane, and the vehicle in an adja-
cent lane is far away from your
vehicle
• When an accessory (such as a hitch-mounted bicycle carrier) is
installed to the r ear of the vehicle
• When the vehicle is heavily loaded in the luggage compart-
ment
• When there is a significant differ- ence in height between your vehi-
cle and the vehicle that enters the
detection area
• Immediately after the BSM func-
tion/RCTA function are turned on
• When towing a trailer
●Instances of the BSM function
unnecessarily detecting a vehicle
and/or object may increase in the
following situations:
• When the sensor is misaligned
due to a strong impact to the sen-
sor or its surrounding area
• When the distanc e between your
vehicle and a guar drail, wall, etc.
that enters the detection area is
short
• When driving up and down con-
secutive steep inclines, such as
hills, dips in the road, etc.
• When vehicle lanes are narrow, or
when driving on the edge of a
lane, and a vehicle traveling in a
lane other than the adjacent lanes
enters the detection area
• When driving on roads with sharp bends, consecutive curves, or
uneven surfaces
• When the tires are slipping or spinning
• When the distanc e between your
vehicle and a following vehicle is
short
• When an accessory (such as a hitch-mounted bicycle carrier) is
installed to the r ear of the vehicle
• When the vehicle throws up water
or snow behind.
■Operation of the RCTA
function
The RCTA function uses radar
sensors to detect vehicles
approaching from the right or left
at the rear of the vehicle and
alerts the driver of the presence
of such vehicles by flashing the
outside rear view mirror indica-
tors and sounding a buzzer.
Approaching vehicles
Detection areas
■RCTA icon display (if
equipped)
When a vehicle approaching
from the right or left at the rear
of the vehicle is detected, the
following will be displayed on
the audio system screen.
 When the Toyota parking
assist monitor (if equipped) is
displayed
The Rear Cross Traffic
Alert function (if
equipped)
A
B

3084-5. Using the driving support systems
driven on the street
• When the distanc e between your
vehicle and metal objects, such as
a guardrail, wall, sign, or parked
vehicle, which may reflect electri-
cal waves toward the rear of the
vehicle, is short
• When an accessory (such as a
hitch-mounted bicycle carrier) is
installed to the r ear of the vehicle
*: If equipped
■Location and types of sen-
sors
Front corner sensors
Front center sensors
Rear corner sensors
Rear center sensors
■Display (Multi-information
display)
When the sensors detect an
object, such as a wall, a graphic
is shown on the multi-informa-
Intuitive parking
assist*
The distance from your
vehicle to objects, such as a
wall, when parallel parking
or maneuvering into a
garage is measured by the
sensors and communicated
via the multi-information
display, audio system
screen and a buzzer. Always
check the surrounding area
when using this system.
System components
A
B
C
D

3094-5. Using the driving support systems
4
Driving
tion display depending on the
position and distance to the
object.Front corner sensor detection
Front center sensor detec-
tion
*1
Rear corner sensor detec-
tion
*2
Rear center sensor detec-
tion
*2
*1: Displayed when the shift lever is in a driving position
*2: Displayed when the shift lever is in R
■Display (audio system
screen)
When the sensors detect an
object, such as a wall, a graphic
is shown on the navigation sys-
tem (if equipped) or multimedia
system (if equipped) screen
depending on the position and
distance to the object.
 When the Toyota parking
assist monitor (if equipped) is
displayed
A simplified image is displayed on
the upper corner of the screen
when an obstacle is detected.
 When the panoramic view
monitor (if equipped) is dis-
played
Panoramic view*
A graphic is shown when the
panoramic view monitor is dis-
played.
*: A simplified image is displayed on
the upper corner of the screen
when an obstacle is detected
while magnified display is shown.
A
B
C
D

3104-5. Using the driving support systems
Except panoramic view
A simplified image is displayed
on the upper corner of the
screen when an obstacle is
detected.
The Intuitive parking assist can
be enabled/disabled on the
screen of the multi-information
display. ( P.112)
When the intuitive parking assist
function is disabled, the intuitive
parking assist OFF indicator
(  P.95) illuminates on the multi-
information display.
To re-enable the system, select
on the multi-inform ation display,
select and turn it on.
If the system is disabled, it will
remain off even if the power switch
is turned to ON after the power
switch has been turned off.
Turning intuitive parking
assist on/off
WARNING
■Intuitive parking assist pre-
cautions
Observe the following precau-
tions.
Failing to do so may result in the
vehicle being unable to be driven
safely and possibly cause an acci-
dent.
●Do not use the sensor at
speeds in excess of approxi-
mately 6 mph (10 km/h).
●The sensors’ detection areas
and reaction times are limited.
When moving forward or revers-
ing, check the areas surround-
ing the vehicle (especially the
sides of the vehicle) for safety,
and drive slowly, using the
brake to control the vehicle’s
speed.
●Do not install accessories near
the bumpers as those areas are
within the sensors’ detection
areas.
●The area directly under the
bumpers is not detected.
Thin posts or objects lower than
the sensor may not be detected
when approached, even if they
have been detected once.
■When to disable the function
In the following situations, disable
the function as it may operate
even though there is no possibility
of a collision.
●The vehicle is equipped with a
commercial fender pole, wire-
less antenna or fog lights.
●The front or rear bumper or a
sensor receives a strong
impact.
●A non-genuine Toyota suspen-
sion (lowered suspension, etc.)
is installed.