2023 TOYOTA SIENNA HYBRID Owners Manual

3274-5. Using the driving support systems
4
Driving
pedal continues to be
depressed, the brakes will be
applied automatically to reduce
the vehicle speed. (Brake con-
trol: See figure 3.)
Figure 1: When the PKSB
(Parking Support Brake) is not
operating
Hybrid system output
Braking force
Time
 Figure 2: When hybrid system
output restriction control oper-
ates
Hybrid system output
Braking force
Time
Hybrid system output restric-
tion control begins operating (System determines that pos-
sibility of collision with
detected object is high)
 Figure 3: When hybrid system
output restriction control and
brake control operates
Hybrid system output
Braking force
Time
Hybrid system output restric-
tion control begins operating
(System determines that pos-
sibility of collision with
detected object is high)
Brake control begins operat-
ing (System determines that
possibility of co llision with
detected object is extremely
high)
■If the Parking Support Brake
has operated
If the vehicle is stopped due to oper-
ation of the Parking Support Brake,
the Parking Support Brake will be
disabled and the PKSB OFF indica-
tor will illuminate. If the Parking Sup-
port Brake operates unnecessarily,
brake control can be canceled by
depressing the brake pedal or wait-
ing for approximate ly 2 seconds for
it to automatically be canceled.
A
B
C
A
B
C
D
A
B
C
D
E

3284-5. Using the driving support systems
Then, the vehicle can be operated
by depressing the accelerator pedal.
■Re-enabling the Parking Sup-
port Brake
To re-enable the Parking Support
Brake when it is disabled due to
operation of the Parking Support
Brake, either enable the system
again ( P.325), or turn the power
switch off and then back to ON.
Additionally, if the object becomes
no longer in the traveling direction of
the vehicle or if the traveling direc-
tion of the vehicle changes (such as
changing from moving forward to
backing up, or from backing up to
moving forward) , the system will be
re-enabled automatically.
■If “Parking Support Brake
Unavailable Remove the Dirt of
Rear Camera” is displayed on
the multi-information display
and the PKSB OFF indicator
illuminates
●A sensor may be covered with ice,
snow, dirt, etc. In this case,
remove the ice, s now, dirt, etc.,
from the sensor to return the sys-
tem to normal. If this message is
shown even after removing dirt
from the sensor, or shown when
the sensor was not dirty to begin
with, have the vehicle inspected at
your Toyota dealer.
●A sensor may be frozen. Once the
ice melts, the sys tem will return to
normal.
●Water may be continuously flow-
ing over the sensor surface, such
as in a heavy rain. When the sys-
tem determines that it is normal,
the system will re turn to normal.

3294-5. Using the driving support systems
4
Driving
*: If equipped
This function will operate in situations such as the following if an
object is detected in the traveling direction of the vehicle.
■When traveling at a low speed and the brake pedal is not
depressed, or is depressed late
Parking Support Brake fu nction (static objects)*
If the sensors detect a static object, such as a wall, in the t rav-
eling direction of the vehicle and the system determines that
a collision may occur due to the vehicle suddenly moving for-
ward due to an accidental accelerator pedal operation, the
vehicle moving the unintended direction due to the wrong
shift position being selected, or while parking or traveling at
low speeds, the system will operate to lessen the impact with
the detected static object and reduce the resulting damage.
Examples of function operation

3304-5. Using the driving support systems
■When the accelerator pedal is depressed excessively
■When the vehicle moves in the unintended direction due to
the wrong shift position being selected
 P.312
Types of sensors
WARNING
■To ensure the system can
operate properly
 P.314
■If the Parking Support Brake
function (static objects) oper-
ates unnecessarily, such as
at a railroad crossing
 P.327
■Notes when washing the vehi-
cle
 P.314

3314-5. Using the driving support systems
4
Driving
■The Parking Support Brake
function (static object) will
operate when
The function will op erate when the
PKSB OFF indicato r is not illumi-
nated ( P.93, 94) and all of the fol-
lowing conditions are met:
●Hybrid system output restriction
control
• The Parking Support Brake is enabled.
• The vehicle speed is approxi-
mately 9 mph (15 km/h) or less.
• There is a static object in the trav- eling direction o f the vehicle and
approximately 6 to 13 ft. (2 to 4 m)
away.
• The Parking Support Brake deter-
mines that a stronger-than-nor-
mal brake operation is necessary
to avoid a collision.
●Brake control
• Hybrid system output restriction
control is operating
• The Parking Support Brake deter- mines that an immediate brake
operation is necessary to avoid a
collision.
■The Parking Support Brake
function (static objects) will
stop operating when
The function will st op operating if
any of the following conditions are
met:
●Hybrid system output restriction
control
• The Parking Support Brake is dis- abled.
• The system determines that the collision has beco me avoidable
with normal brake operation.
• The static object is no longer approximately 6 to 13 ft. (2 to 4 m)
away from the vehicle or in the
traveling directi on of the vehicle.
●Brake control
• The Parking Support Brake is dis- abled.
• Approximately 2 seconds have
elapsed since the vehicle was stopped by brake control.
• The brake pedal is depressed after the vehicle is stopped by
brake control.
• The static object is no longer approximately 6 to 13 ft. (2 to 4 m)
away from the vehicle or in the
traveling direction of the vehicle.
■Detection range of the Parking
Support Brake function (static
objects)
The detection range of the Parking
Support Brake function (static
objects) differs from the detection
range of the intuiti ve parking assist.
(  P.317) Therefore, even if the
intuitive parking assist detects an
object and provides a warning, the
Parking Support Brake function
(static objects) may not start operat-
ing.
■Situations in wh ich the Parking
Support Brake function (static
objects) may not operate
When the shift lever is in N
■Situations in which the system
may not operate properly
 P.315
■Situations in which the system
may operate even if there is no
possibility of a collision
 P.316

3324-5. Using the driving support systems
*: If equipped
This function will operate in situations such as the following if a vehi-
cle is detected in the traveling direction of the vehicle.
■When reversing, a vehicle is approaching and the brake pedal
is not depressed, or is depressed late
 P.304
■The Parking Support Brake
function (rear-crossing vehi-
cles) will operate when
The function will op erate when the
PKSB OFF indicator is not illumi-
nated ( P.93, 94) and a ll of the fol-
lowing conditions are met:
●Hybrid system output restriction
control
• The Parking Support Brake is
enabled.
• The vehicle speed is approxi-
Parking Support Brake function (rear-crossing
vehicles)*
If a rear radar sensor detects a vehicle approaching from the
right or left at the rear of the vehicle and the system deter-
mines that the possibility of a collision is high, this function
will perform brake control to reduce the likelihood of an
impact with the approaching vehicle.
Examples of function operation
Types of sensors
WARNING
■To ensure the system can
operate properly
 P.304

3334-5. Using the driving support systems
4
Driving
mately 9 mph (15 km/h) or less.
• Vehicles are approaching from the right or left at the rear of the vehi-
cle at a traveling speed of approx-
imately 5 mph (8 km/h) or more.
• The shift lever is in R.
• The Parking Support Brake deter-
mines that a stronger than normal
brake operation is necessary to
avoid a collision with an approach-
ing vehicle.
●Brake control
• Hybrid system output restriction control is operating
• The Parking Support Brake deter- mines that an emergency brake
operation is necessary to avoid a
collision with an approaching vehi-
cle.
■The Parking Support Brake
function (rear-crossing vehi-
cles) will stop operating when
The function will st op operating if
any of the following conditions are
met:
●Hybrid system output restriction
control
• The Parking Support Brake is dis-
abled.
• The collision becomes avoidable with normal brake operation.
• A vehicle is no longer approaching from the right or left at the rear of
the vehicle.
●Brake control
• The Parking Support Brake is dis-
abled.
• Approximately 2 seconds have elapsed since the vehicle was
stopped by brake control.
• The brake pedal is depressed after the vehicle is stopped by
brake control.
• A vehicle is no longer approaching from the right or left at the rear of
the vehicle.
■Detection area of the Parking
Support Brake function (rear-
crossing vehicles)
The detection area of the Parking
Support Brake function (rear-cross- ing vehicles) differs from the detec-
tion area of the RCTA function
(
 P.308). Therefore, even if the
RCTA function detects a vehicle
and provides an alert, the Parking
Support Brake function (rear-cross-
ing vehicles) may not start operat-
ing.
■Situations in which the system
may not operate properly
 P.309
■Situations in which the system
may operate even if there is no
possibility of a collision
 P.310

3344-5. Using the driving support systems
Multi-information display (7-
inch display)
Multi-information display
(4.2-inch display)
Driving mode select switch
Operate the driving mode select
switch forward or backward to
select the desired driving mode on
the multi-information display.
1Normal mode
Provides an optimal balance of fuel
economy, quietness, and dynamic
performance. Suitable for normal driving.
2
Sport mode
Controls the hybrid system to pro-
vide quick, powerful acceleration.
This mode also changes the steer-
ing feel, making it suitable for when
agile driving response is desired,
such as when driving on roads with
many curves.
When Sport mode is selected,
Sport mode indicator comes on.
3Eco drive mode
Helps the driver accelerate in an
eco-friendly manner and improve
fuel economy through moderate
throttle characteristics and by con-
trolling the operation of the air con-
ditioning system (heating/cooling).
When Eco drive mode is selected,
Eco drive mode indicator comes
on.
■When changing to a driving
mode other than normal mode
●The background color of the multi-
information display changes
according to the selected driving
mode.
●When the speedometer is set to
analog display, the speedometer
display color also changes. (For
vehicles with the 7-inch multi-
information di splay only)
■Air conditioning system opera-
tion in Eco drive mode
In Eco drive mode, heating/cooling
operations and the fan speed is con-
trolled to improve fuel efficiency.
Perform the following procedures to
increase the air conditioning perfor-
mance.
●Turn eco air conditioning mode off
(  P.350)
●Adjust the fan speed ( P.349)
●Cancel Eco drive mode
Driving mode select
switch
The driving modes can be
selected to suit the driving
and usage conditions.
Selecting a driving mode
A
B
C