2018 TOYOTA PRIUS PLUG-IN HYBRID sensor

4655-5. Using the driving support systems
PRIUS PHV_OM_OM47C99E_(EE)
5
Driving
■Sensor detection information
● The sensor’s detection areas are limited to the areas around the vehicle’s
bumper.
● Depending on the shape of the obstacle and other factors, the detection dis-
tance may shorten, or detection may be impossible.
● Obstacles may not be detected if they are too close to the sensor.
● There will be a short delay between obstacle detection and display. Even
when traveling at a low speed, if you come too close to an obstacle before
the display and buzzer activate, the display and buzzer may not activate at
all.
● Thin posts or objects lower than the sensor may not be detected when
approached, even if they have been detected once.
● It might be difficult to hear beeps due to the volume of audio system or air
flow noise of the air conditioning system.
■ Obstacle warning function
When an obstacle in the side areas is within the vehicle course while the
vehicle is moving forward or backward, this function inform the driver by the
display and the buzzer. ( P. 461, 463)
■ Obstacle detection in side areas
● Obstacles in the side areas are detected while driving by scanning the side
areas with the side sensors. Recognized obstacles are retained in memory
for up to approximately 2 minutes.
● Obstacles may not be detected in the side areas until the scan completes.
After the power switch is turned on, scanning completes after driving the
vehicle for a short period of time.
● When an obstacle such as another vehicle, pedestrian or animal is detected
by the side sensors, the obstacle may continue to be detected even after it
has left the side sensor detection area.
Obstacle
Calculated vehicle course
1
2

4665-5. Using the driving support systems
PRIUS PHV_OM_OM47C99E_(EE)
■ If “Clean Parking Assist Sensor” is displayed on the multi-information
display
A sensor may be dirty or covered with snow or ice. In such cases, if it is
removed from the sensor, the system should return to normal.
Also, due to the sensor being frozen at low temperatures, a malfunction dis-
play may appear or an obstacle may not be detected. If the sensor thaws out,
the system should return to normal.
■ If “Parking Assist Malfunction” is displayed on the multi-information dis-
play
Depending on the malfunction of the sensor, the device may not be working
normally. Have the vehicle inspected by any authorized Toyota retailer or
Toyota authorized repairer, or any reliable repairer.
■ Customization
Setting of buzzer volume can be changed.
(Customizable features: P. 738)
WARNING
■When using Toyota parking assist-sensor
Observe the following precautions to avoid an unexpected accident.
● Do not exceed the speed limit of 10 km/h (6 mph).
● The sensors’ detection areas and reaction times are limited. When moving
forward or reversing, check the areas surrounding the vehicle (especially
the sides of the vehicle) for safety, and drive slowly, using the brake to
control the vehicle’s speed.
● Do not install accessories within the sensors’ detection areas.

4675-5. Using the driving support systems
PRIUS PHV_OM_OM47C99E_(EE)
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Driving
WARNING
■Sensors
Certain vehicle conditions and the surrounding environment may affect the
ability of the sensor to correctly detect obstacles. Particular instances where
this may occur are listed below.
● There is dirt, snow or ice on the sensor. (Wiping the sensors will resolve
this problem.)
● The sensor is frozen. (Thawing the area will resolve this problem.)
In especially cold weather, if a sensor is frozen, the screen may show an
abnormal display, or obstacles may not be detected.
● The sensor is covered in any way.
● In harsh sunlight or intense cold weather
● On an extremely bumpy road, on an incline, on gravel, or on grass
● The vicinity of the vehicle is noisy due to vehicle horns, motorcycle
engines, air brakes of large vehicles , or other loud noises producing ultra-
sonic waves.
● The sensor is splashed with water or drenched with heavy rain.
● The sensor is drenched with water on a flooded road.
● The vehicle is leaning considerably to one side.
● The vehicle is equipped with a fender pole or wireless antenna.
● The vehicle is approaching a tall or curved curb.
● The detection range is reduced due to an object such as a sign.
● The area directly under the bumpers is not detected.
● If obstacles draw too close to the sensor.
● The bumper or sensor receives a strong impact.
● A non-genuine Toyota suspension (lowered suspension etc.) is installed.
● There is another vehicle equipped with parking assist sensors in the vicin-
ity.
● Towing eyelets are installed.
● A backlit license plate is installed.
In addition to the examples above, depending on the shape and condition of
obstacles, detection may not be possible, or the detection range may be
shortened.

4685-5. Using the driving support systems
PRIUS PHV_OM_OM47C99E_(EE)
WARNING
■Side sensors
In the following situations, the Toyota parking assist-sensor may not operate
normally 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. ( P. 465)
● 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. 460) temporary turn
off.
■ Obstacles which may not be properly detected
● The shape of the obstacle may prevent the sensor from detecting it. Pay
particular attention to the following obstacles:
• Wires, fences, ropes, etc.
• Cotton, snow and other materials that absorb sound waves
• Sharply-angled objects
• Low obstacles
• Tall obstacles with upper sections projecting outwards in the direction of
your vehicle
• People may not be detected if they are wearing certain types of cloth-
ing.
• Moving objects such as people or animals

4695-5. Using the driving support systems
PRIUS PHV_OM_OM47C99E_(EE)
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Driving
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
retailer or Toyota authorized repairer, or any reliable repairer.
● 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.

4705-5. Using the driving support systems
PRIUS PHV_OM_OM47C99E_(EE)
Intelligent Clearance Sonar
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

4725-5. Using the driving support systems
PRIUS PHV_OM_OM47C99E_(EE)
Front corner sensors
Front center sensors
Rear corner sensors
Rear center sensors
The Intelligent Clearance Sonar
can be enabled/disabled on the
screen ( P. 250) of the
multi-information display.
When the Intelligent Clearance
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.)
Types of sensors
1
2
3
4
Changing settings of the Intelligent Clearance Sonar

4775-5. Using the driving support systems
PRIUS PHV_OM_OM47C99E_(EE)
5
Driving
■Sensor detection range
The detection range of the Intelligent Clearance Sonar function differs from
the detection range of the Toyota parking assist-sensor (P. 464).
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. 472), 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. 4 5 9 ) ,
if the Intelligent Clearance Sonar function is not stopped (P. 472), 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.