Toyota Prius Plug-in Hybrid (2017 year). Manual - part 27
442
5-5. Using the driving support systems
NOTICE
■ When using Toyota parking assist-sensor
In the following situations, the system may not function correctly due to a
sensor malfunction etc. Have the vehicle checked by any authorized Toyota
dealer or repairer, or another duly qualified and equipped professional.
● Toyota parking assist-sensor 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.
■ 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.
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Intelligent Clearance Sonar
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
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
5
◆ The accelerator pedal is depressed too far
: If equipped
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5-5. Using the driving support systems
◆ The vehicle moves due to the wrong shift position being
selected
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Types of sensors
1
Front corner sensors
2
Front center sensors
3
Rear corner sensors
4
Rear center sensors
Changing settings of the Intelligent Clearance Sonar
The Intelligent Clearance Sonar
can be enabled/disabled on the
screen
(P. 242) of the
multi-information display.
When the Intelligent Clearance
5
Sonar function is off, the ICS OFF
indicator illuminates.
When the Intelligent Clearance Sonar function is switched off, system
operation does not resume until the function is switched back on through
the settings screen on the multi-information display. (System operation
does not resume by operating the power switch.)
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Operation
When the Intelligent Clearance Sonar function detects an obstacle
with a probability of collision, hybrid system output is restricted to
restrain an increase in vehicle speed. (Hybrid system output restric-
tion control: A)
Furthermore, when the accelerator pedal continues to be depressed,
the brakes are applied to reduce the vehicle speed. (Brake control: B)
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ON
OFF
ON
OFF
DOWN
5
ON
OFF
DOWN
UP
1
Accelerator pedal
5
Control starts
2
Brake pedal
6
Collision is possible
3
Hybrid system output
7
Collision is likely
4
Braking force
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5-5. Using the driving support systems
Operation conditions
■ Operation starting conditions
When the ICS OFF indicator is not illuminated or flashing (P. 453,
644) and all of the following conditions are met, the system operates.
Hybrid system output restriction control
● The Intelligent Clearance Sonar is on.
● The vehicle speed is 15 km/h (10 mph) or less.
● There is an obstacle in the traveling direction of the vehicle (2 to
4 m [6 to 13 ft.] 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 Intelligent Clearance Sonar 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
(2 to 4 m [6 to 13 ft.] ahead).
Brake control
● The Intelligent Clearance Sonar 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
(2 to 4 m [6 to 13 ft.] ahead).
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Display and buzzer for hybrid system output restriction control
and brake control
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.
Multi-information
ICS OFF
Control
Situation
Buzzer
display
Indicator
Hybrid sys-
tem output
Accelera-
restriction
tion at a cer-
control
is
Not
tain speed
operating
illuminated
or higher is
(accelera-
not possible.
tion limita-
tion control)
Hybrid sys-
5
tem output
restriction
A stronger-
control
is
than-normal
Short
operating
brake opera-
beep
(control
to
tion is nec-
Not
restrict out-
essary
illuminated
put as much
as possible)
Brake con-
Emergency
trol is oper-
braking
is
ating
necessary
The vehicle
The vehicle
is
stopped
is
stopped
after brake
Illuminated
by system
control oper-
operation
ation
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■Sensor detection range
The detection range of the Intelligent Clearance Sonar function differs from
the detection range of the Toyota parking assist-sensor (P. 437).
Therefore, even if the Toyota parking assist-sensor detects an obstacle and
provides a warning, the Intelligent Clearance Sonar may not start operating.
■ System operation
When the vehicle is stopped by system operation, the Intelligent Clearance
Sonar function stops and the ICS OFF indicator illuminates.
■ System recovery
When the Intelligent Clearance Sonar function is stopped by system opera-
tion and you would like to resume operation, either turn the Intelligent Clear-
ance Sonar on again (P. 445), 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
■ Toyota parking assist-sensor buzzer
Regardless of whether the Toyota parking assist-sensor is on or off (P. 432),
if the Intelligent Clearance Sonar function is not stopped (P. 445), when the
front or rear sensors detect an obstacle and brake control is performed, the
Toyota parking assist-sensor buzzer also sounds and a notification of the
approximate distance to the obstacle is provided.
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■ Situations when the system may operate even though there is no possi-
bility of a collision
In the following situations, the system may operate even though there is no
possibility of a collision.
● Environmental influence
• The vehicle is driven on a narrow
road
• The vehicle is driven on a gravel road
or in an area with tall grass
5
• The vehicle is driven toward a banner or flag, a low-hanging branch or a
boom barrier (such as those used at railroad crossings, toll gates and
parking lots).
• There is an obstacle on the shoulder of the road (when the vehicle is
driven in a narrow tunnel, on a narrow bridge or on a narrow road)
• The vehicle is being parallel parked
• There is a rut or hole in the surface of the road
• When the vehicle is driven on a metal cover (grating), such as those used
for drainage ditches
• The vehicle is driven on a steep slope
• The sensor is covered by water on a flooded road
● Influence from the weather
• Ice, snow, dirt, etc., has adhered to the sensor (if removed, the system
returns to normal)
• Heavy rain or water strikes the vehicle
• In severe weather such as fog, snow or a sand storm
● Influence from other sonic waves
• An ultrasonic wave source is nearby, such as the horn or parking assist-
sensor of another vehicle, a vehicle detector, a motorcycle engine or the
air brake of a large vehicle
• Electronic components (such as a backlit license plate (especially fluo-
rescent types), fog lights, a fender pole or a wireless antenna) are
installed near the sensors
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●Changes in the vehicle
• The vehicle is tilted a large amount
• The height of the vehicle has drastically changed due to the carried load
(the nose tilts up or down)
• The direction of the sensor has deviated due to a collision or other impact
■ In the unlikely event that the Intelligent Clearance Sonar function mistak-
enly operates at a crossing or elsewhere
Even in the unlikely event that the Intelligent Clearance Sonar function mis-
takenly operates at a crossing or elsewhere, brake control is canceled after
approximately 2 seconds, allowing you to proceed forward and leave the
area. Furthermore, 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.
■ Situations in which the system may not operate normally
In the following situations, the system may not operate normally.
● Environmental influence
• There is an obstacle that cannot be detected between the vehicle and
another obstacle that can be detected
• An obstacle such as another vehicle, a motorcycle, a bicycle or a pedes-
trian cuts in front of the vehicle or jumps out from the side.
● Influence from the weather
• The area around the sensor is
extremely hot or cold
• The wind is strong
• Ice, snow, dirt, etc., has adhered to the sensor (if removed, the system
returns to normal)
• Heavy rain or water strikes the vehicle
• In severe weather such as fog, snow or a sand storm
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● Influence from other sonic waves
• An ultrasonic wave source is nearby, such as the horn or parking assist-
sensor of another vehicle, a vehicle detector, a motorcycle engine or the
air brake of a large vehicle
• Electronic components (such as a backlit license plate (especially fluo-
rescent types), fog lights, a fender pole or a wireless antenna) are
installed near the sensors
●Changes in the vehicle
• The vehicle is tilted a large amount
• The height of the vehicle has drastically changed due to the carried load
(the nose tilts up or down)
• The direction of the sensor has deviated due to a collision or other impact
■ Intelligent Clearance Sonar function while the Simple Intelligent Parking
Assist System is operating
P. 458
■ 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 35 km/h (22 mph) or higher.
■ When “ICS Unavailable” is displayed on the multi-information display
and the ICS OFF indicator flashes
5
● 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
any authorized Toyota dealer or repairer, or another duly qualified and
equipped professional.
●System initialization may not have been performed after removal and instal-
lation of the 12-volt battery. Perform system initialization.
■ When “ICS Malfunction Visit Your Dealer” is displayed on the multi-infor-
mation display, the ICS OFF indicator flashes and the buzzer sounds
The system may not be operating properly. Have the vehicle inspected at any
authorized Toyota dealer or repairer, or another duly qualified and equipped
professional.
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5-5. Using the driving support systems
WARNING
■ For safe use
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 Intelli-
gent Clearance Sonar function can provide support to lessen the severity
of collisions. However, it may not operate depending on the situation.
●The Intelligent Clearance Sonar function is not a system designed to com-
pletely stop the vehicle. Furthermore, even if the Intelligent Clearance
Sonar function is able to stop the vehicle, brake control is canceled after
approximately 2 seconds, so depress the brake pedal immediately.
■ In order for the system to operate properly
Make sure to observe the following precautions regarding the sensors
(P. 445). Failure to observe these precautions may cause the sensors
not to operate properly, and may result in an unexpected accident.
●Do not perform work such as modification, disassembly or painting
●Only perform replacements using genuine parts
●Do not subject the area around the sensors to any impacts
●Do not damage the sensors, and always keep them clean
■ 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.
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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 any authorized Toyota dealer or repairer, or another duly qualified and
equipped professional.
● 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.
■ Preventing unnecessary operation
In the following situations, turn the Intelligent Clearance Sonar function off.
The system may operate even though there is no possibility of a collision.
● A chassis roller, chassis dynamo, free roller or similar equipment is being
used for an inspection, etc.
●The vehicle is being loaded onto a ship, truck or other transport vessel
●The suspension has been lowered or tires that have a different size than
the genuine tires are equipped
5
●The height of the vehicle has drastically changed due to the carried load
(the nose tilts up or down).
● A towing eyelet is installed
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S-IPA (Simple Intelligent Parking Assist
System)
Simple Intelligent Parking Assist System
■ Function summary
The Simple Intelligent Parking Assist System automatically oper-
ates the steering wheel to provide support when backing into an
area near a target parking spot, and when departing from a parallel
parking spot. (Changing the shift position and speed adjustment
when moving forward or backing up are not performed automati-
cally.)
● The Simple Intelligent Parking Assist 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 Intelligent Parking Assist System provides steering
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 Intelligent Clearance Sonar function
While the Simple Intelligent Parking Assist System is operating, if
the system detects an obstacle that could result in a collision, the
emergency brakes operate, regardless of whether the Intelligent
Clearance Sonar function is on or off. (P. 458)
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-IPA switch (P. 459) to turn the system off.
: If equipped
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Chart of Simple Intelligent Parking Assist System assist modes
and functions
Type of
Assist mode
Function summary
See page
parking
Guidance is provided to
detect the intended
parking spot and reach a
position to begin back-
Parallel
parking
Parallel park-
ing up from. Assistance
P. 462
assist mode
ing
is provided from when
the vehicle begins back-
ing up until it reaches
the intended parking
spot.
Assistance starts after
the vehicle has been
parallel parked. Assis-
Exit parallel park-
Exit parallel
tance is provided to
P. 469
ing assist mode
parking
guide the vehicle from
the parking space to a
5
position from which it
can take off.
Assistance starts after
stopping the vehicle in
front of the intended
Back-in
parking
parking spot, and is pro-
assist mode
Back-in park-
vided for backing into a
P. 474
(with forward guid-
ing
parking space, including
ance function)
guidance to reach a
position to begin back-
ing up from.
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■ Intelligent Clearance Sonar function while the Simple Intelligent Parking
Assist System is operating
While the Simple Intelligent Parking Assist System is operating, if the system
detects an obstacle that could result in a collision, hybrid system output
restriction control and brake control of the Intelligent Clearance Sonar func-
tion are operated, regardless of whether the Intelligent Clearance Sonar func-
tion is on or off. (P. 445)
● After the Intelligent Clearance Sonar function operates, operation of the
Simple Intelligent Parking Assist System is temporarily stopped, and opera-
tion of the Intelligent Clearance Sonar function is indicated on the multi-
information display. (P. 449)
● When operation of the Simple Intelligent Parking Assist System is stopped 3
times by operation of the Intelligent Clearance Sonar function, the Simple
Intelligent Parking Assist System is canceled.
● Once the Simple Intelligent Parking Assist System becomes available after
the Intelligent Clearance Sonar function is operated, a message prompting
you to shift is displayed on the multi-information display. Operation of the
Simple Intelligent Parking Assist System can be resumed by shifting accord-
ing to the prompt on the multi-information display and pressing the S-IPA
switch (P. 459) again.
■ Shifting while the Simple Intelligent Parking Assist System is operating
If the system determines that the drivers intends to move forward or in
reverse, assistance continues even if the drivers 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. the obstacle detection range) can be changed. (Customizable
features: P. 708)
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