sensor TOYOTA PRIUS PRIME 2023 Repair Manual

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

3915-5. Using the driving support systems
5
Driving
away from the vehicle or in the
traveling direction of the vehicle.
■Detection range of the Parking
Support Brake function (static
objects to the front and
rear/static objects around the
vehicle
*)*: Vehicles with Advanced Park
The detection range of the Parking
Support Brake function (static
objects to the front and rear/static
objects around the vehicle) differs
from the detection range of the intui-
tive parking assist ( P.363). There-
fore, even if the intuitive parking
assist detects an object and pro-
vides a warning, the Parking Sup-
port Brake function (static objects to
the front and rear/static objects
around the vehicle) may not start
operating.
■Situations in which the system
may not operate properly
 P.366
■Situations in which the system
may operate even if there is no
possibility of a collision
 P.367
■Situations in which the system
may operate even though there
is no possibility of a collision
(static objects around the vehi-
cle) (vehicles with Advanced
Park)
In addition to the situations in which
stationary objects front and rear
(  P.390) may not be detected,
objects may not be detected by the
sensors in the following situations:
●When moving sideways, such as
when parallel parking ( P.408)
■Detection of objects along the
sides of the vehicle (static
objects around the vehicle)
(vehicles with Advanced Park)
●Objects along the sides of the
vehicle are not instantaneously
detected. The location of objects in relation to the vehicle is esti-
mated after they are first detected
by the front or rear side sensors,
or side cameras. Therefore, after
the power switch is changed to
ON, even if an object is along the
side of the vehicle, it may not be
detected until the vehicle has
been driven a small amount and
the side sensors or side cameras
completely scan the areas along
the sides of the vehicle.
●If a vehicle, person, animal, etc., is
detected by a side sensors or side
cameras, but then leaves the
detection area of the side sensors
or side cameras, the system will
assume the object has not moved.

3925-5. Using the driving support systems
*: If equipped
This function will operate in situ-
ations such as the following if a
vehicle is detected in the travel-
ing direction of the vehicle.
■When reversing, a vehicle is
approaching and the brake
pedal is not depressed, or
is depressed late
P.355
■The Parking Support Brake
function (rear-crossing vehi-
cles) will operate when
The function will operate when the
driving assist information indicator is
not illuminated ( P.150, 152) and
all of the following 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.
• 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 position is in R.
• The Parking Support Brake deter- mines that a stronger than normal
brake operation is necessary to
avoid a collision wit h 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
Parking Support Brake
function (rear-crossing
vehicles)
*
If a rear radar sensor
detects a vehicle approach-
ing from the right or left at
the rear of the vehicle and
the system determines that
the possibility of a collision
is high, this function will
perform brake control to
reduce the likelihood of an
impact with the approach-
ing vehicle.
Examples of function
operation
Types of sensors
WARNING
■To ensure the system can
operate properly
 P.355

3935-5. Using the driving support systems
5
Driving
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.
■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.374). 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.376
■Situations in which the system
may operate even if there is no
possibility of a collision
 P.377
*: If equipped
The system operates when an
approaching pedestrian is
detected behind the vehicle
while backing up, and when the
brake pedal is not depressed or
is depressed late.
Parking Suppo rt Brake
function (rear pedes-
trians)
*
If the rear camera sensor
detects a pedestrian behind
the vehicle while backing up
and the system determines
that the possibility of collid-
ing with the detected pedes-
trian is high, a buzzer will
sound. If the system deter-
mines that the possibility of
colliding with the detected
pedestrian is extremely
high, the brakes will be
applied automatically to
help reduce the impact of
the collision.
Examples of system oper-
ation

3995-5. Using the driving support systems
5
Driving
Cameras and sensors are used
to detect parked vehicles, mak-
ing it easier to identify parking
spaces.
Front camera
Side cameras
Rear camera
Depending on the vehicle grade
and equipped options, the
actual rear camera may be dif-
ferent from this illustration.
Sensors
 P.363
■Camera images
As special cameras are used, the
colors in displa yed images may dif-
fer from the actual color.
WARNING
• When a heater is installed in the surface of the parking space
(road surface freeze prevention
heater)
• When the wheels are mis- aligned, such a fter a wheel has
been subjected to a strong
impact
• When a pedestrian or passing vehicle is detected during assis-
tance
• When something is incorrectly detected as a parking line (light,
reflections from a building, dif-
ference in height on the parking
surface, a gutter, painted road
lines, redrawn lines, etc.)
If the vehicle deviates greatly from
the set parking space in any situa-
tion other than the above, have
the vehicle inspected by your
Toyota dealer.
NOTICE
■Precautions for use
Advanced Park
If the 12-volt battery was dis-
charged or has been removed
and installed, fold and extend the
outside rear view mirrors.
Types of cameras and
sensors used for the
Advanced Park

4005-5. Using the driving support systems
■Precautions for use
For details on the following, refer to
“Panoramic view monitor” of “Park-
ing assist system” in the “MULTIME-
DIA OWNER’S MANUAL”.
●Displayable range of the screens
●Cameras
●Differences between displayed
images and the actual road
●Differences between displayed
images and the actual objects
■Detection range of the cameras
and sensors
●If a parked vehicle is behind the
target parking space and the dis-
tance between it and the vehicle
becomes far, it may no longer be
able to be detected. Depending on
shape or condition of a parked
vehicle, the detection range may
become short or the vehicle may
not be detected.
●Objects other than parked vehi-
cles, such as columns, walls, etc.,
may not be detected. Also, if they
are detected, they may cause the
target parking space to be mis-
aligned.
■Situations in which parking
space lines may not be recog-
nized properly
●In situations such as the following,
parking space lines on the road
surface may not be detected:
• When the parking space does not use lines (parking space boundar-
ies are marked with rope, blocks,
etc.)
• When the parking space lines are
faded or dirty, making them
unclear
• When the road surface is bright, such as concrete, and the contrast
between it and the white parking
space lines is small
• When the parking space lines are
any color other than yellow or
white
• When the area surrounding the
parking space is dark, such as at night, in an underground parking
lot, parking garage, etc.
• When it is rainin g or has rained
and the road surface is wet and
reflective or there are puddles
• When the sun is shining directly
into a camera, such as in the early
morning or evening
• When the parking space is cov-
ered with snow or de-icing agent
• When there marks from repairs or other marks on the road surface,
or there is a traffic bollard, or other
object on the road surface
• When the color or brightness of
the road surface is uneven
• When a camera has been splashed by hot or cold water and
the lens has fogged up
• When the appearance of the park- ing space is affected by the
shadow of the vehicle or trees
• When a camera lens is dirty or covered with wa ter droplets
●In situations such as the following,
the target parking space may not
be recognized correctly:
• When there marks from repairs or other marks on the road surface,
or there is a parking block, traffic
bollard, or other object on the road
surface
• When it is rainin g or has rained
and the road surface is wet and
reflective or there are puddles
• When the area around the vehicle is dark or backlit
• When the color or brightness of
the road surface is uneven
• When the parking space is on a slope
• When there are diagonal lines (access aisle) near the parking
space
• When the appearance of the park- ing space is affected by the
shadow of a parked vehicle (such
as shadows from the grille, side
step, etc.)
• When accessories which obstruct the view of the camera are
installed
• When the parking space lines are faded or dirty, making them

4015-5. Using the driving support systems
5
Driving
unclear
• When the appearance of the park- ing space is affected by the
shadow of the vehicle or trees
■Sensor detection information
 P.365
■Objects which the sensor may
not be properly detected
 P.366
■Situations in which the sensor
may not operate properly
 P.366
■Situations in which parking
assistance may not operate
even if there is no possibility of
a collision
 P.367
Press the Advanced Park main
switch.
If the switch is pressed while assis-
tance is being performed, the assis-
tance will be canceled.
■Operating conditions of the
Advanced Park
Assistance will begin when all of the
following conditions are met:
●The brake pedal is depressed
●The vehicle is stopped
●The driver’s seat belt is fastened
●The steering wheel is not being
operated
●The accelerator pedal is not
depressed
●All of the doors and the back door
are closed
●The outside rear view mirrors are
not folded
●The parking brake is not engaged
●The dynamic radar cruise control
are not operating
●ABS, VSC, TRAC, PCS and
PKSB are not operating
●The vehicle is not on a steep
WARNING
■Precautions for the cameras
and sensors
●Due to the characteristics of the
camera lens, the position of and
distance to people and objects
displayed on the screen may
differ from the actual situation.
For details, refer to “MULTIME-
DIA OWNER’S MANUAL”.
●Make sure to observe the pre-
cautions for using the intuitive
parking assist, otherwise a sen-
sor may not operate correctly,
possibly leading to an accident.
(  P.364)
●In situations such as the follow-
ing, the sensors may not oper-
ate correctly, possibly leading to
an accident. Proceed carefully.
• When there is a parked vehicle next to the target parking space,
if the displayed target parking
space is far from the actual tar-
get parking space, a sensor
may be misaligned. Have the
vehicle inspected by your
Toyota dealer.
• Do not install any accessories near the detection area of the
sensors.
Turning the Advanced
Park system on/off

4085-5. Using the driving support systems
or brake pedal.
■If you feel that the vehicle is
approaching close to a sur-
rounding vehicle, object, per-
son, or gutter
 P.406
■Perpendicular exiting (for-
ward/reverse) function
Do not use exiting (for-
ward/reverse) function in any situa-
tion other than when exiting a
parallel parking spot. If assistance is
started unintentionally, depress the
brake pedal and stop the vehicle,
then press the Advanced Park main
switch to cancel assistance.
■Situations in which the perpen-
dicular exiting (forward/reverse)
function will not operate
In situations such as the following,
the perpendicular exiting (for-
ward/reverse) func tion will not oper-
ate:
●When a vehicle which is waiting to
park is in the exit direction
●When a wall, column, or person is
detected as near a front or rear
center or corner sensor
■When the brakes have been
operated
 P.406
The parallel parking function
can be used if the target parking
space can be detected when the
vehicle is stopped close and
aligned with the center of the
parking space. Also, depending
on the condition of the parking
space, etc., if it is necessary to
change the direction of travel of
the vehicle, the shift position can
be changed by assistance con-
trol.
1 Stop the vehicle with it
aligned near the center of the
target parking space.
Advanced Park parallel
parking function
Parking using the parallel
parking function

4135-5. Using the driving support systems
5
Driving
wheel” will be displayed. If the
steering wheel is operated,
“Advanced Park Finished” will be
displayed and assistance will end.
As assistance will end while the
vehicle is moving, grip the steering
wheel and drive forward.
If the steering wheel is not oper-
ated, the vehicle will stop at the exit
position. Assistance can be ended
by depressing the accelerator pedal
or brake pedal.
■If you feel that the vehicle is
approaching close to a sur-
rounding vehicle, object, per-
son, or gutter
 P.406
■Parallel exiting function
Do not use parallel exiting function
in any situation other than when
exiting a parallel parking spot. If
assistance is started unintentionally,
depress the brake pedal and stop
the vehicle, then press the
Advanced Park main switch to can-
cel assistance.
■Situations in which the parallel
exiting function will not operate
In situations such as the following,
the parallel exiti ng function will not
operate:
●When vehicles waiting at a traffic
signal in the exit direction
●When a vehicle is stopped in the
area behind where the vehicle will
exit
●When a wall, column, or person is
detected as near a front or rear
side sensor
●When the vehicle has been
parked on a curb and a side sen-
sor detects the road surface

4255-5. Using the driving support systems
5
Driving
wheel.
■The Secondary Collision
Brake
When the SRS airbag sensor
detects a collision and the sys-
tem operates, the brakes and
brake lights are automatically
controlled to reduce the vehicle
speed and help reduce the pos-
sibility of further damage due to
a secondary collision.
■When the TRAC/VSC/ABS sys-
tems are operating
The slip indicator light will flash
while the TRAC/VSC/ABS systems
are operating.
■Disabling the TRAC system
If the vehicle gets stuck in mud, dirt
or snow, the TRAC system may
reduce power from the hybrid sys-
tem to the wheels.
Pressing to turn the system off
may make it easier for you to rock
the vehicle in order to free it.
To turn the TRAC system off,
quickly press and release . The “Traction Control Turned OFF”
will be shown on the multi-informa-
tion display.
Press again to turn the system
back on.
■Turning off both TRAC and VSC
systems
To turn the TRAC and VSC systems
off, press and hold for more than
3 seconds while the vehicle is
stopped.
The VSC OFF indicator light will
come on and the “Traction Control
Turned OFF” will be shown on the
multi-informat ion display.
*
Press again to turn the systems
back on.
*: PCS (Pre-Collision System) will
also be disabled (only pre-collision
warning is available). The PCS
warning light will come on and a
message will be disp layed on the
multi-information display.
(  P.298)
■When the message is dis-
played on the mu lti-information
display showing that TRAC has
been disabled even if has
not been pressed
TRAC is temporary deactivated. If
the information continues to show,
contact your Toyota dealer.
■Operating conditions of hill-
start assist control
When all of the following conditions
are met, the hill-start assist control
will operate:
●The shift position is in a position
other than P or N (when starting
off forward/backward on an
upward incline)
●The vehicle is stopped