TOYOTA PRIUS PRIME 2023 Owners Manual

3815-5. Using the driving support systems
5
Driving
ward or squatting
• Pedestrians who are lying down
• Pedestrians who are running
• Pedestrians who suddenly appear from the shadow of the vehicle or
a building
• Pedestrians who are riding mov- ing objects such as a bicycle or
skateboard
• Pedestrians wearing oversized clothing such as a rain coat, long
skirt, etc., making their silhouette
obscure
• Pedestrians whose body is par- tially hidden by an object, such as
a cart or umbrella
• Pedestrians which are obscured by darkness, such as at night
●In some situations, such as the
following, pedestrians may not be
detected by the rear camera
detection function, preventing the
function from operating properly:
• When backing up in inclement weather (rain, snow, fog, etc.)
• When the rear camera is
obscured (dirt, snow, ice, etc. are
attached) or scratched
• When a very bright light, such as
the sun, or the headlights of
another vehicle, shines directly
into the rear camera
• When backing up in a place where the surrounding brightness
changes suddenly, such as at the
entrance or exit of a garage or
underground parking lot
• When backing up in a dim envi-
ronment such as during dusk or in
an underground parking lot
• When the camera position and
direction are deviated
• When a towing hook is attached
• When towing with the vehicle
• When water droplets are flowing on the camera lens
• When the vehicle height is extremely changed (nose up,
nose down, etc.)
• When tire chains or an emergency tire puncture repair kit are used
• When the suspension has been lowered or tires that have a differ-
ent size than the genuine tires are installed
• When an aftermarket electronic part (backlit license plate, fog
light, etc.) is insta lled near the rear
camera
• If a bumper protector, such as an
additional trim strip, is installed to
the rear bumper
■Situations in which the system
may operate unexpectedly
●Even though there are no pedes-
trians in the detection area, some
objects, such as the following,
may be detected, possibly caus-
ing the rear camera detection
function to operate.
• Three dimensional objects, such as a pole, traffic cone, fence, or
parked vehicle
• Moving objects, such as a car or motorcycle
• Objects moving toward your vehi- cle when backing up, such as
flags or puddles (or airborne mat-
ter, such as smoke, steam, rain, or
snow)
• Cobblestone or gravel roads, tram
rails, road repair s, white lines,
pedestrian crossings or fallen
leaves on the road
• Metal covers (gratings), such as those used for drainage ditches
• Objects reflected in a puddle or on
a wet road surface
• Shadows on the road
●In some situations, such as the
following, the rear camera detec-
tion function may operate even
though there are no pedestrians in
the detection area.
• When backing up toward the road-
side or a bump on the road
• When backing up toward an incline/decline
• When the vehicle height is extremely changed (nose up,
nose down, etc.)
• If a bumper protector, such as an
additional trim strip, is installed to
the rear bumper
• When an aftermarket electronic
part (backlit license plate, fog
light, etc.) is insta lled near the rear

3825-5. Using the driving support systems
camera
• If the orientation of the rear cam- era has been changed due to a
collision or other impact, or
removal and installation
• If a towing eyelet is installed to the
rear of the vehicle
• When towing with the vehicle
• When water is flowing over the rear camera lens
• When the rear camera is obscured (dirt, snow, ice, etc. are
attached) or scratched
• If there is a flashing light in the detection area, such as the emer-
gency flashers of another vehicle
• When tire chains or an emergency tire puncture repair kit are used.
●Situations in which the rear cam-
era detection function may be diffi-
cult to notice
• The buzzer may be difficult to hear if the surrounding area is noisy or
the audio system volume is high.
• If the temperature in the cabin is extremely high or low, the Multi-
media Display may not operate
correctly.
*: If equipped
PKSB (Parking Sup-
port Brake)*
The PKSB (Parking Support
Brake) is a system that
issues warnings and auto-
matically performs braking
to help reduce collision
damage with operation tar-
gets that were detected
when traveling at a low
speed such as when park-
ing.
This system consists of the
following functions: a Park-
ing Support Brake function
(static objects to the front
and rear) that detects static
objects such as walls, a
Parking Support Brake
function (rear-crossing
vehicles)
* that detects vehi-
cles approaching from the
rear while backing up, a
Parking Support Brake
function (rear pedestrians)
*
that detects pedestrians
behind the vehicle, and a
Parking Support Brake
function (static objects
around the vehicle) (vehi-
cles with Advanced Park)
that detects static objects
around the vehicle.
*: If equipped

3835-5. Using the driving support systems
5
Driving
The system has detected the
following as operation targets.
(The operation targets vary
depending on the function.)
Parking Support Brake func-
tion (static objects to the front
and rear):
P.388
 Parking Support Brake func-
tion (rear-crossing vehicles)
(if equipped):
P.392
 Parking Support Brake func-
tion (rear pedestrians) (if
equipped):
P.393
 Parking Support Brake func-
tion (static objects around the
vehicle) (vehicles with
Advanced Park):
P.388
PKSB (Parking Support
Brake) systemWARNING
■Cautions regarding the use of
the system
Do not overly rely on the system,
as doing so may lead to an acci-
dent.
Always drive while checking the
safety of the surroundings of the
vehicle.
Depending on the vehicle and
road conditions, weather, etc., the
system may not operate.
The detection capabilities of sen-
sors and radars are limited.
Always drive while checking the
safety of the surroundings of the
vehicle.
●The driver is solely responsible
for safe driving. Always drive
carefully, taking care to observe
your surroundings. The Parking
Support Brake system is
designed to provide support to
lessen the severity of collisions.
However, it may not operate in
some situations.
●The Parking Support Brake sys-
tem is not designed to stop the
vehicle completely. Addition-
ally, even if the system has
stopped the vehicle, it is neces-
sary to depress the brake pedal
immediately as brake control
will be canceled after approxi-
mately 2 seconds.
●It is extremely dangerous to
check the system operations by
intentionally driving the vehicle
into the direction of a wall, etc.
Never attempt such actions.
■When to disable the Parking
Support Brake
In the following situations, disable
the Parking Support Brake as the
system may operate even though
there is no possibility of a colli-
sion.

3845-5. Using the driving support systems
All of the Parking Support Brake
functions (static objects to the
front and rear, rear-crossing
vehicles [if equipped], rear
pedestrians [if equipped], and
static objects around the vehicle
[vehicles with Advanced Park])
are enabled/disabled simultane-
ously.
The Parking Support Brake
function can be enabled/dis-
abled on of the multi-infor-
WARNING
●When inspecting the vehicle
using a chassis roller, chassis
dynamo or free roller
●When loading the vehicle onto a
boat, truck or other transport
vessel
●If the suspension has been
modified or tires of a size other
than specified are installed
●If the front of the vehicle is
raised or lowered due to the
carried load
●When equipment that may
obstruct a sensor is installed,
such as a towing eyelet, trans-
port hook, bumper protector (an
additional trim strip, etc.), bicy-
cle carrier, or snow plow
●When using automatic car
washing devices
●If the vehicle cannot be driven in
a stable manner, such as when
the vehicle has been in an acci-
dent or is malfunctioning
●When the vehicle is driven in a
sporty manner or off-road
●When the tires are not properly
inflated
●When the tires are very worn
●When tire chains, a compact
spare tire or an emergency tire
puncture repair kit are used.
●When towing with the vehicle
■Precautions for the suspen-
sion
Do not modify the suspension of
the vehicle. If the height or tilt of
the vehicle is changed, the sen-
sors may not be able to detect
detectable objects and the system
may not operate correctly, possi-
bly leading to an accident.
NOTICE
■If “System Stopped See
Owner’s Manual” is displayed
on the multi-information dis-
play and the driving assist
information indi cator is illu-
minated
If this message is displayed
immediately after the power
switch is changed to ON, operate
the vehicle carefully, paying atten-
tion to your surr oundings. It may
be necessary to drive the vehicle
for a certain amount of time
before the system returns to nor-
mal. (If the system is not return to
normal after driv ing for a while,
clean the sensor or rear camera
lens.)
Enabling/Disabling the
Parking Support Brake

3855-5. Using the driving support systems
5
Driving
mation display. (P.167)
When the PKSB (Parking Support
Brake) is disabled, the driving
assist information indicator
( P.152) illuminates, and a mes-
sage is displayed on the multi-infor-
mation display.
If the system switches to OFF (dis-
abled) and the PKSB (Parking Sup-
port Brake) is st opped, the PKSB
(Parking Support Br ake) will not be
re-enabled until ON (enabled) is
selected again on the multi-infor-
mation display and the system
operates.
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 to OFF.
If the hybrid system output
restriction control or brake con-
trol operates, a buzzer will
sound and a message will be
displayed on the Multimedia
Display and multi-information
display, to alert the driver.
Depending on the situation, hybrid
system output rest riction control will
operate to either limit acceleration
or restrict output as much as possi-
ble.
 Hybrid system output restric-
tion control is operating
(acceleration restriction)
Acceleration greater than a certain amount is restricted by the system.
Multimedia Display (vehicles with
panoramic view monitor): No warn-
ing displayed
Multi-information
display: “Object
Detected Acceleration Reduced”
Driving assist info rmation indicator:
Not illuminated
Buzzer: Does not sound
 Hybrid system output restric-
tion control is operating (out-
put restricted as much as
possible)
The system has determined that
stronger-than-normal brake opera-
tion is necessary.
Multimedia Display (vehicles with
panoramic view monitor): “BRAKE!”
Multi-information display: “BRAKE!”
Driving assist info rmation indicator:
Not illuminated
Buzzer: Short beep
 Brake control is operating
The system determined that emer-
gency braking is necessary.
Multimedia Display (vehicles with
panoramic view monitor): “BRAKE!”
Multi-information display: “BRAKE!”
Driving assist info rmation indicator:
Not illuminated
Buzzer: Short beep
 Vehicle stopped by system
operation
The vehicle has been stopped by
brake control operation.
Multimedia Display (vehicles with
panoramic view monitor): “Press
Brake Pedal”
Display and buzzer for
hybrid system output
restriction control and
brake control

3865-5. Using the driving support systems
Multi-information display: “Acceler-
ator Pedal is Pressed Press Brake
Pedal” (If the accelerator pedal is
not depressed, “Press Brake Pedal”
will be displayed.)
Driving assist info rmation indicator:
Illuminated
Buzzer: Sounds repeatedly
If the Parking Support Brake
determines that a collision with a
detected object or pedestrian (if
equipped) is possible, the hybrid
system output will be restricted
to restrain any increase in the
vehicle speed. (Hybrid system
output restriction control: See
figure 2.)
Additionally, if the accelerator
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-
System overview
A
B
C
A
B
C
D
A
B
C
D

3875-5. Using the driving support systems
5
Driving
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 collision 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 driving assist infor-
mation indicator will illuminate. In
addition, even when the PKSB
(Parking Support Brake) operates,
the brake control is canceled after
approximately 2 seco nds to start off.
Furthermore, the brake control also
can be canceled by depressing the
brake pedal. Depressing the accel-
erator pedal again after that allows
the vehicle to start off.
■Re-enabling the Parking Sup-
port Brake
To re-enable the Parking Support
Brake when it is disabled due to
operation of the PKSB (Parking
Support Brake), either enable the
system again, or turn the power
switch off and then back to ON.
Additionally, if any of the following
conditions are met, the system will
be re-enabled automatically and the
driving assist info rmation indicator
will turn off ( P.152):
●The P shift position is selected
●Drive with no operation targets in
the traveling direction of the vehi-
cle
●Change the traveling direction of
the vehicle
■Buzzer
Regardless of whether the intuitive
parking assist is enabled or not
(  P.364), if the PKSB (Parking
Support Brake) system is enabled
(  P.384), the buzzer will sound to
notify the driver of the approximate
distance to the object when the
brake control and the hybrid system
output restriction control are oper-
ated.
E

3885-5. Using the driving support systems
*: If equipped
This function will operate in situ-
ations such as the following if an
object is detected in the travel-
ing direction of the vehicle.
■When traveling at a low
speed and the brake pedal
is not depressed, or is
depressed late
■When the accelerator pedal
is depressed excessively
Parking Support Brake
function (static
objects to the front
and rear/static objects
around the vehicle)
*
If the sensors detect a static
object, such as a wall, in the
traveling direction of the
vehicle and the system
determines that a collision
may occur due to the vehi-
cle suddenly moving for-
ward due to an accidental
accelerator pedal opera-
tion, 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 (static objects
to the front and rear)

3895-5. Using the driving support systems
5
Driving
■When the vehicle moves
forward due to the incorrect
shift position being
selected
The system will operate in the
following situations when a sta-
tionary object is detected in the
surrounding area.■When moving forward and a
collision with a stationary
object on the inner side of a
turn is likely
■When reversing and a colli-
sion with a stationary
object on the outer side of a
turn is likely
 P.363Examples of function
operation (static objects
around the vehicle) (vehi-
cles with Advanced Park)
Types of sensors

3905-5. Using the driving support systems
■The Parking Support Brake
function (static objects to the
front and rear) will operate
when
The function will operate when the
driving assist information indicator is
not illuminated ( P.150, 152) and
all of the followin g 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 of 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 around
the vehicle)
* will operate when*: Vehicles with Advanced Park
This function is operable when any
of the following conditions are met in
addition to the operating conditions
for stationary objects in around the
vehicle.
●After the hybrid system has been
started, the vehicle has moved
approximately 23.0 ft. (7 m) or
less
●The R shift position is selected
●After the shift position has been
changed from R to D, the vehicle
has moved approximately 23.0 ft.
(7 m) or less
■The Parking Support Brake
function (static objects to the
front and rear/static objects
around the vehicle
*) will stop
operating when
*: Vehicles with Advanced Park
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 become 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 direction 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)
WARNING
■To ensure the system can
operate properly
 P.364
■If the PKSB (Parking Support
Brake) operates unnecessar-
ily, such as at a railroad
crossing
 P.387
■Notes when washing the vehi-
cle
 P.365