Toyota Prius Prime (2022 year). Manual in english — page 28
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5-5. Using the driving support systems
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●
If a sensor is hit by a large amount of water, such as when driving on a
flooded road
●
There is dirt, snow, water drops or ice on a sensor. (Cleaning the sensors
will resolve this problem.)
●
A sensor is coated with a sheet of spray or heavy rain
●
When driving in inclement weather such as fog, snow or a sandstorm
●
When vehicle horns, vehicle detectors, motorcycle engines, air brakes of
large vehicles, the clearance sonar of other vehicles or other devices which
produce ultrasonic waves are near the vehicle
●
If the front of the vehicle is raised or lowered due to the carried load
●
If the orientation of a sensor has been changed due to a collision or other
impact
●
Driving close to columns (H-shaped steel beams, etc.) in multi-story parking
garages, construction sites, etc.
●
If the vehicle cannot be driven in a stable manner, such as when the vehicle
has been in an accident or is malfunctioning
●
When tire chains, a compact spare tire or an emergency tire puncture repair
kit are used.
●
When strong winds are blowing
●
On an extremely bumpy road, on an
incline, on gravel, or on grass
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5-5. Using the driving support systems
WARNING
■
Cautions regarding the use of the system
There is a limit to the degree of recognition accuracy and control perfor-
mance that this system can provide, do not overly rely on this system. The
driver is always responsible for paying attention to the vehicle’s surround-
ings and driving safely.
■
To ensure the system can operate properly
Observe the following precautions to avoid an unexpected accident.
●
Do not damage the sensors, and always keep them clean.
●
Do not attach a sticker or install an electronic component, such as a backlit
license plate (especially fluorescent type), fog lights, fender pole or wire-
less antenna near a radar sensor.
●
Do not subject the surrounding area of the sensor to a strong impact. If
subjected to an impact, have the vehicle inspected by your Toyota dealer.
If the front or rear bumper needs to be removed/installed or replaced, con-
tact your Toyota dealer.
●
Do not modify, disassemble or paint the sensors.
●
Do not attach a license plate cover.
●
Keep your tires properly inflated.
■
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.
●
Failing to observe the warnings above.
●
A non-genuine Toyota suspension (lowered suspension, etc.) is installed.
■
Side sensors
In the following situations, the intuitive parking assist may not operate nor-
mally and may result in an unexpected accident. Drive carefully.
●
Obstacles may not be detected in the side areas until the vehicle is driven
for a short time and a scan of the side areas is completed. (
●
Even after the scan of the side areas is completed, obstacles such as
other vehicles, people or animals that approach from the sides cannot be
detected.
●
Even after the scan of the side areas is completed, obstacles may not be
detected depending on the surrounding situation of the vehicle.
At that time, the side sensor operation displays (
P. 442) temporary turn
off.
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5-5. Using the driving support systems
5
D
WARNING
■
Notes when washing the vehicle
●
Do not apply intensive bursts of water or steam to the sensor area.
Doing so may result in the sensor malfunctioning.
●
When using steam to wash the vehicle, do not direct steam too close to
the sensors. The sensors may not function properly if subjected to steam.
NOTICE
■
When using intuitive parking assist
In the following situations, the system may not function correctly due to a
sensor malfunction etc. Have the vehicle checked by your Toyota dealer.
●
Intuitive parking assist operation display flashes, and a beep sounds when
no obstacles are detected.
●
If the area around a sensor collides with something, or is subjected to
strong impact.
●
If the bumper collides with something.
●
If the display shows up and remains on without a beep.
●
If a display error occurs, first check the sensor.
If the error occurs even when there is no ice, snow or mud on the sensor, it
is likely that the sensor is malfunctioning.
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5-5. Using the driving support systems
Parking Support Brake function
The system operates in the following situations when an obstacle is
detected in the traveling direction of the vehicle.
◆
The vehicle is driven at low speeds and the brake pedal is not
depressed, or is depressed too late
◆
The accelerator pedal is depressed too far
: If equipped
When a collision may occur with an obstacle while parking or
traveling at low speeds, when the vehicle suddenly moves for-
ward due to mistaken accelerator pedal operation, or when the
vehicle moves due to the wrong shift position being selected,
the sensors detect obstacles to the front or rear in the traveling
direction of the vehicle, and the system operates to lessen
impact with obstacles such as walls, and reduce resulting dam-
age.
Examples of system operation
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5-5. Using the driving support systems
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◆
The vehicle moves due to the wrong shift position being
selected
Front corner sensors
Front center sensors
Rear corner sensors
Rear center sensors
The Parking Support Brake function can be enabled/disabled on the
screen (
P. 246) of the multi-information display.
When the Parking Support Brake
function is off, the PKSB OFF indi-
cator illuminates.
When the Parking Support Brake function is switched off, system operation
does not resume until the function is switched back on through the
screen on the multi-information display. (System operation does not
resume by operating the power switch.)
Types of sensors
1
2
3
4
Changing settings of the Parking Support Brake function
454
5-5. Using the driving support systems
When the Parking Support Brake function detects an obstacle with a
probability of collision, hybrid system output is restricted to restrain an
increase in vehicle speed. (Hybrid system output restriction control: A)
Furthermore, when the accelerator pedal continues to be depressed,
the brakes are applied to reduce the vehicle speed. (Brake control: B)
Operation
DOWN
DOWN
UP
ON
OFF
ON
OFF
ON
OFF
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5-5. Using the driving support systems
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Accelerator pedal
Brake pedal
Hybrid system output
Braking force
Control starts
Collision is possible
Collision is likely
1
2
3
4
5
6
7
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5-5. Using the driving support systems
■
Operation starting conditions
When the PKSB OFF indicator is not illuminated or flashing
(
P. 459, 673) and all of the following conditions are met, the
system operates.
Hybrid system output restriction control
●
The Parking Support Brake function is on.
●
The vehicle speed is approximately 10 mph (15 km/h) or less.
●
There is an obstacle in the traveling direction of the vehicle
(approximately 6 to 13 ft. [2 to 4 m] ahead).
●
The system determined that a stronger-than-normal brake opera-
tion was necessary to avoid a collision.
Brake control
●
Hybrid system output restriction control is being performed.
●
The system determined that an emergency brake operation was
necessary to avoid a collision.
■
Operation ending conditions
In any of the following situations, the system stops operating.
Hybrid system output restriction control
●
The Parking Support Brake function has been turned off
(stopped).
●
The collision became avoidable with normal brake operation.
●
The obstacle is no longer in the traveling direction of the vehicle
(approximately 6 to 13 ft. [2 to 4 m] ahead).
Brake control
●
The Parking Support Brake function has been turned off
(stopped).
●
Approximately 2 seconds elapsed after the vehicle was stopped
by brake control.
●
The brake pedal was depressed after the vehicle was stopped by
brake control.
●
The obstacle is no longer in the traveling direction of the vehicle
(approximately 6 to 13 ft. [2 to 4 m] ahead).
Operation conditions
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5-5. Using the driving support systems
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When the hybrid system output restriction control or brake control
operates, the buzzer sounds and a message is displayed on the multi-
information display to alert the driver.
Depending on the situation, output restriction control operates to either
limit acceleration or restrict output as much as possible.
Display and buzzer for hybrid system output restriction control
and brake control
Control
Situation
Multi-information
display
PKSB
OFF Indi-
cator
Buzzer
Hybrid sys-
tem
output
restriction
control
is
operating
(accelera-
tion
limita-
tion control)
Acceleration
at a certain
speed
or
higher is not
possible.
Not illumi-
nated
Short
beep
Hybrid sys-
tem
output
restriction
control
is
operating
(control
to
restrict out-
put as much
as possible)
A stronger-
than-normal
brake opera-
tion is neces-
sary
Not illumi-
nated
Brake
con-
trol is operat-
ing
Emergency
braking
is
necessary
The vehicle
is stopped by
system oper-
ation
The vehicle
is
stopped
after
brake
control oper-
ation
Illumi-
nated
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5-5. Using the driving support systems
■
Sensor detection range
The detection range of the Parking Support Brake function differs from the
detection range of the intuitive parking assist. (
Therefore, even if the intuitive parking assist detects an obstacle and pro-
vides a warning, the Parking Support Brake function may not start operating.
■
System operation
When the vehicle is stopped by system operation, the Parking Support Brake
function stops and the PKSB OFF indicator illuminates.
■
System recovery
When the Parking Support Brake function is stopped by system operation
and you would like to resume operation, either turn the Parking Support
Brake function on again (
P. 453), or turn the power switch off and then back
on. Furthermore, when the vehicle moves with an obstacle no longer in the
traveling direction of the vehicle, or when the traveling direction of the vehicle
changes (such as when switching from moving forward to backing up, and
vice versa), system operation automatically resumes.
■
Obstacles not detected by the sensors
The following obstacles may not be detected by the sensors.
●
Objects such as people, cloth and snow, that are difficult for sonic waves to
reflect off of. (In particular, people may also not be detected depending on
the type of clothing they are wearing.)
●
Objects not perpendicular with the ground, objects not at a right angle to the
traveling direction of the vehicle, uneven objects or waving objects
●
Low objects
●
Thin objects such as wires, fences, ropes and signposts
●
Objects that are extremely close to the bumper
■
Situations in which the system may not operate properly
■
Situations in which the system may operate even if there is no possibil-
ity of a collision
■
In the unlikely event that the Parking Support Brake function mistakenly
operates at a crossing or elsewhere
Even in the unlikely event that the Parking Support Brake function mistakenly
operates at a crossing or elsewhere, brake control is canceled after approxi-
mately 2 seconds, allowing you to proceed forward and leave the area. Fur-
thermore, brake control is also canceled when the brake pedal is depressed.
Depressing the accelerator pedal again allows you to proceed forward and
leave the area.
■
When removing and installing the 12-volt battery
The system needs to be initialized.
The system can be initialized by driving the vehicle straight ahead for 5 sec-
onds or more at a speed of approximately 22 mph (35 km/h) or higher.
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5-5. Using the driving support systems
5
D
■
When “PKSB Unavailable” is displayed on the multi-information display
and the PKSB OFF indicator flashes
●
Ice, snow, dirt, etc., may have adhered to the sensor. If this occurs, remove
the ice, snow, dirt, etc., from the sensor to return the system to normal.
Also, a warning message may be displayed at low temperatures due to ice
forming on the sensor, and the sensor may not detect obstacles. Once the
ice melts, the system will return 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.
■
When “PKSB Malfunction Visit Your Dealer” is displayed on the multi-
information display, the PKSB OFF indicator flashes and the buzzer
sounds
The system may not be operating properly. Have the vehicle inspected at
your Toyota dealer.
WARNING
■
Cautions regarding the use of the system
Do not rely solely upon the system. Relying solely upon the system may
lead to an unexpected accident.
●
Driving safely is the sole responsibility of the driver. Pay careful attention
to the surrounding conditions in order to ensure safe driving. The Parking
Support Brake function can provide support to lessen the severity of colli-
sions. However, it may not operate depending on the situation.
●
The Parking Support Brake function is not a system designed to com-
pletely stop the vehicle. Furthermore, even if the Parking Support Brake
function is able to stop the vehicle, brake control is canceled after approxi-
mately 2 seconds, so depress the brake pedal immediately.
●
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.
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5-5. Using the driving support systems
WARNING
■
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 collision.
●
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, bumper protector (an additional trim strip, etc.), bicycle carrier, or
snow plow
●
When using automatic car washing devices
●
If the vehicle cannot be driven in a stable manner, such as when the vehi-
cle has been in an accident 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, compact spare tire or an emergency tire puncture repair
kit are used
■
To ensure the system can operate properly
■
Handling the suspension
Do not modify the suspension, as changes to the height or incline of the
vehicle may prevent the sensors from correctly detecting obstacles, may
cause the system not operate, or may cause the system to operate unnec-
essarily.
■
If the Parking Support Brake function (static objects) operates unnec-
essarily, such as at a railroad crossing
■
Notes when washing the vehicle
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D
NOTICE
■
Preventing sensor malfunctions
●
If the area around a sensor is subjected to an impact, equipment may not
operate properly due to a sensor malfunction. Have the vehicle inspected
at your Toyota dealer.
●
When using a high-pressure washer to wash the vehicle, do not spray
water directly on the sensors. The sensors may not function properly if
subjected to an impact from strong water pressure.
●
When using steam to wash the vehicle, do not direct steam too close to
the sensors. The sensors may not function properly if subjected to steam.
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5-5. Using the driving support systems
S-APGS (Simple Advanced Parking Guidance
System)
■
Function summary
The Simple Advanced Parking Guidance System automatically
operates the steering wheel to provide support when backing into
an area near a target parking spot, and when departing from a par-
allel parking spot. (Changing the shift position and speed adjust-
ment when moving forward or backing up are not performed
automatically.)
●
The Simple Advanced Parking Guidance System does not park
the vehicle automatically. It is a system that provides support
when pulling out of a perpendicular or parallel parking spot.
●
The Simple Advanced Parking Guidance System provides steer-
ing wheel operation assistance to guide the vehicle toward the
selected intended parking spot. The selected intended parking
spot may not always be reachable, depending on road and vehi-
cle conditions at the time of parking, and the distance to the
intended parking spot.
■
Linking with the Parking Support Brake function
While the Simple Advanced Parking Guidance System is operating,
if the system detects an obstacle that could result in a collision, the
emergency brakes operate, regardless of whether the Parking Sup-
port Brake function is on or off. (
: If equipped
Simple Advanced Parking Guidance System
WARNING
●
When backing up or proceeding forward, be sure to directly confirm the
safety of the area to the front or rear, and the area around the vehicle, and
slowly back up or proceed forward while adjusting the vehicle speed by
depressing the brake pedal.
●
If it seems the vehicle may make contact with a pedestrian, another vehi-
cle or any other obstacles, stop the vehicle by depressing the brake pedal,
and then press the S-APGS switch (
P. 465) to turn the system off.
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Chart of Simple Advanced Parking Guidance System assist
modes and functions
Assist mode
Type of
parking
Function summary
See page
Parallel parking
assist mode
Parallel park-
ing
Guidance is provided to
detect
the
intended
parking spot and reach a
position to begin back-
ing up from. Assistance
is provided from when
the vehicle begins back-
ing up until it reaches
the intended parking
spot.
Exit parallel parking
assist mode
Exit parallel
parking
Assistance starts after
the vehicle has been
parallel parked. Assis-
tance is provided to
guide the vehicle from
the parking space to a
position from which it
can take off.
Back-in parking
assist mode
(with forward guid-
ance function)
Back-in park-
ing
Assistance starts after
stopping the vehicle in
front of the intended
parking spot, and is pro-
vided for backing into a
parking space, including
guidance to reach a
position to begin back-
ing up from.
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5-5. Using the driving support systems
■
Parking Support Brake function while the Simple Advanced Parking
Guidance System is operating
While the Simple Advanced Parking Guidance System is operating, if the sys-
tem detects an obstacle that could result in a collision, hybrid system output
restriction control and brake control of the Parking Support Brake function are
operated, regardless of whether the Parking Support Brake function is on or
off. (
●
After the Parking Support Brake function operates, operation of the Simple
Advanced Parking Guidance System is temporarily stopped, and operation
of the Parking Support Brake function is indicated on the multi-information
display. (
●
When operation of the Simple Advanced Parking Guidance System is
stopped 3 times by operation of the Parking Support Brake function, the
Simple Advanced Parking Guidance System is canceled.
●
Once the Simple Advanced Parking Guidance System becomes available
after the Parking Support Brake function is operated, a message prompting
you to shift is displayed on the multi-information display. Operation of the
Simple Advanced Parking Guidance System can be resumed by shifting
according to the prompt on the multi-information display and pressing the
S-APGS switch (
P. 465) again.
■
Shifting while the Simple Advanced Parking Guidance System is operat-
ing
If the system determines that the driver intends to move forward or in reverse,
assistance continues even if the driver shifted before being prompted to do so
by the system. However, because driver operation differs from the guidance
provided by the system, the number of turning maneuvers may increase.
■
Customization
Settings (e.g. obstacle detection range) can be changed. (Customizable fea-
tures:
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