sensor TOYOTA MIRAI 2018 (in English) Owner's Guide

2235-5. Using the driving support systems
5
Driving
MIRAI_OM_USA_OM62025U
Intuitive parking assist
Front corner sensors
Rear corner sensors
Rear center sensors
The distance from your vehicle to nearby obstacles when paral-
lel parking or maneuvering into a garage is measured by the
sensors and communicated via the displays and a buzzer.
Always check the surrounding ar ea when using this system.
Types of sensors

2255-5. Using the driving support systems
5
Driving
MIRAI_OM_USA_OM62025U
When the sensors detect an obstacle, the following displays inform
the driver of the position and distance to the obstacle.
Front corner sensor operation
Rear corner sensor operation
Rear center sensor operation
Display

2265-5. Using the driving support systems
MIRAI_OM_USA_OM62025U■
Distance display
Sensors that detect
an obstacle will illuminate continuously or blink.
*: The images may differ from that shown in the illustrations. ( P. 225)
Sensor detection display, obstacle distance
Display*
Approximate distance to obstacle
Front corner sensorRear corner sensor/rear
center sensor
(continuous)
—
Rear center sensor only:
4.9 ft. (150 cm) to
2.0 ft. (60 cm)
(continuous)
2.0ft.(60cm) to
1.5ft.(45cm)2.0 ft. (60 cm) to
1.5 ft. (45 cm)
(continuous)
1.5ft.(45cm) to
1.0ft.(30cm)
Rear corner sensor:
1.5 ft. (45 cm) to
1.0 ft. (30 cm)
Rear center sensor:
1.5 ft. (45 cm) to
1.2 ft. (35 cm)
(blinking)
Less than
1.0ft.(30cm)
Rear corner sensor:
Less than
1.0 ft. (30 cm)
Rear center sensor:
Less than
1.1 ft. (35 cm)

2275-5. Using the driving support systems
5
Driving
MIRAI_OM_USA_OM62025U■
Buzzer operation and di
stance to an obstacle
A buzzer sounds when the sensors are operating.
● The buzzer sounds faster as the vehicle approaches an obstacle.
When the vehicle comes within the following distance of the
obstacle, the buzzer sounds continuously.
• Front corner sensors: Appr oximately 1.0 ft. (30 cm)
• Rear corner sensors: Appr oximately 1.0 ft. (30 cm)
• Rear center sensors: Approximately 1.2 ft. (35 cm)
● When 2 or more obstacles are detected simultaneously, the
buzzer system responds to the nearest obstacle. If one or both
come within the above distances , the beep will repeat a long
tone, followed by fast beeps.
Approximately 4.9 ft. (150 cm)
Approximately 2.0 ft. (60 cm)
The diagram shows the detection
range of the sensors. Note that the
sensors cannot detect obstacles
that are extremely close to the
vehicle.
The range of the sensors may
change depending on the shape of
the object, etc.
■ The intuitive parking assist can be operated when
●Front corner sensors:
• The power switch is in ON mode.
• The shift position is in other than P.
• The vehicle speed is less than about 6 mph (10 km/h).
(At any speed when the shift position is in R)
● Rear corner and rear center sensors:
• The power switch is in ON mode.
• The shift position is in R.
Detection range of the sensors

2285-5. Using the driving support systems
MIRAI_OM_USA_OM62025U■
Sensor detection information
●The sensor’s detection areas are limited to the areas around th e vehicle’s
bumper.
● Certain vehicle conditions and the surrounding environment may affect the
ability of a sensor to correctly detect an obstacle. 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 ma y show an
abnormal display, or obstacles may not be detected.
• The sensor is covered in any way.
• The vehicle is leaning considerably to one side.
• 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 pro ducing ultra-
sonic waves.
• There is another vehicle equipped with parking assist sensors in the
vicinity.
• The sensor is coated with a sheet of spray or heavy rain.
• The vehicle is equipped with a fender pole or wireless antenna .
• Towing eyelets are installed.
• The bumper or sensor receives a strong impact.
• A backlit license plate, license plate holder, etc., are insta lled.
• The vehicle is approaching a tall or curved curb.
• In harsh sunlight or intense cold weather.
• The area directly under the bumpers is not detected.
• If obstacles draw too close to the sensor.
• A non-genuine Toyota suspension (lowered suspension etc.) is i nstalled.
• People may not be detected if they are wearing certain types o f clothing.
In addition to the examples above, there are instances in which, because of
their shape, signs and other objects may be judged by a sensor to be closer
than they are.
● The shape of the obstacle may prevent a sensor from detecting i t. Pay par-
ticular 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

2295-5. Using the driving support systems
5
Driving
MIRAI_OM_USA_OM62025U●
The following situations may occur during use.
• Depending on the shape of the obstacle and other factors, the detection
distance may shorten, or detection may be impossible.
• Obstacles may not be detected if they are too close to the sen sor.
• There will be a short delay between obstacle detection and dis play. Even
at slow speeds, there is a possibility that the obstacle will c ome within the
sensor’s detection areas before the display is shown and the bu zzer
sounds.
• Thin posts or objects lower than the sensor may not be detecte d 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.
■ 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 case s, if it is
removed from the sensor, the system should return to normal.
Also, due to the sensor being frozen at low temperatures, a mal function dis-
play may appear or an obstacle may not be detected. If the sens or 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 your Toyota dealer.
■ Customization
Some functions can be customized.
(Customizable features: P. 440)
■ Certification for the intuitive parking assist
This device complies with Part 15 of the FCC Rules. Operation i s subject to
the following two conditions: (1) This device may not cause har mful interfer-
ence, and (2) This device must accept any interference received, including
interference that may cause undesired operation.

2305-5. Using the driving support systems
MIRAI_OM_USA_OM62025U
WARNING
■When using the intuitive parking assist
Observe the following precautions.
Failing to do so may result in the vehicle being unable to be d riven safely
and possibly cause an accident.
● Do not use the sensor at speeds in excess of 6 mph (10 km/h).
● 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 t he brake to
control the vehicle’s speed.
● Do not install accessories within the sensors’ detection areas.
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 Toyot a dealer.
● The intuitive parking assist operation display flashes, and a b uzzer 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 continuously without beeping, except when the buzzer
mute switch has been turned on.
● If a display error occurs, first check the sensor.
If the error occurs even if 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 a rea.
Doing so may result in the sensor malfunctioning.

2375-5. Using the driving support systems
5
Driving
MIRAI_OM_USA_OM62025U
PCS (Pre-Collision System)
0
◆Pre-collision warning
When a high possibility of a
frontal collision is detected, a
buzzer sounds and a message
is shown on the multi-informa-
tion display to urge the driver to
take evasive action.
◆Pre-collision brake assist
When there is a high possibility of a frontal collision, the system
applies greater braking force in relation to how strongly the b rake
pedal is depressed.
◆Pre-collision braking
When there is a high possibility of a frontal collision, the system
warns the driver using warning display and buzzer. If the syste m
determines that a collision is u navoidable, the brakes are auto mati-
cally applied to reduc e the collision speed.
When the radar sensor detects possibility of a frontal collisio n,
brakes are automatically engaged to lessen impact as well as
vehicle damage.
The alert timing for the pre-collision system can be changed or
turned on/off, as necessary, by operating the switch. ( P. 238)

2395-5. Using the driving support systems
5
Driving
MIRAI_OM_USA_OM62025U
The radar sensor detects vehi-
cles or other obstacles on or near
the road ahead and determines
whether a collision is imminent
based on the position, speed, and
heading of the obstacles.
■The pre-collision system is operational when
The pre-collision system is on ( P. 238) and the following conditions are met:
● Pre-collision warning:
• Vehicle speed is greater than about 10 mph (15 km/h).
• The speed at which your vehicle is approaching the obstacle or the vehi-
cle running ahead of you is greater than about 7 mph (10 km/h).
● Pre-collision brake assist:
• The VSC is not turned off.
• Vehicle speed is greater than about 19 mph (30 km/h).
• The speed at which your vehicle is approaching the obstacle or the vehi-
cle running ahead of you is greater than about 19 mph (30 km/h) .
• The brake pedal is depressed.
● Pre-collision braking:
• The VSC is not turned off.
• Vehicle speed is greater than about 10 mph (15 km/h).
• The speed at which your vehicle is approaching the obstacle or the vehi-
cle running ahead of you is greater than about 7 mph (10 km/h).
Radar sensor

2405-5. Using the driving support systems
MIRAI_OM_USA_OM62025U■
Conditions that may trigger the system even if there is no poss ibility of a
collision
In any of the following situations where the frontal area of the radar sensor is
interrupted, the radar sensor may detect possibility of a frontal collision and
the system may be activated.
● When passing by an oncoming vehicle in a curve or a turn to the right or the
left
● When rapidly approaching an obstacle ahead (e.g. preceding vehi cle, toll
gate barrier, etc.)
● When there is a structural object (billboard, low ceiling, fluo rescent light,
etc.) above the uphill road ahead
● When driving on a narrow road or through under a low overhead structure
(bridge, tunnel, fly-under, etc.)
● When driving on an uneven road surface
● When there is a metal object, bump, or protrusion on the road surface
● When vehicle’s front part is raised or lowered depending on loa ding condi-
tions
● When the direction of radar sensor is misaligned by strong impa ct applied
on an area around the radar sensor, etc.
● When there is an obstacle (guard rail, etc.) by the roadside at the entrance
to a curve
● When the front of your vehicle is pointing upwards (caused by putting a
heavy load in the trunk, etc.)
When the system is activated in the situations described above, there is also
a possibility that the brakes may be applied with a force greater than normal.
■ Obstacles not detected
The sensor cannot detect plastic obstacles such as traffic cone s. There may
also be occasions when the sensor cannot detect pedestrians, an imals, bicy-
cles, motorcycles, trees, or snowdrifts.
■ Situations in which the pre-col lision system does not function properly
The system may not function effectively in situations such as t he following:
● On roads with sharp bends or uneven surfaces
● If a vehicle suddenly moves in front of your vehicle, such as a t an intersec-
tion
● If a vehicle suddenly cuts in front of your vehicle, such as wh en overtaking
● In inclement weather such as heavy rain, fog, snow or sand stor ms
● When your vehicle is skidding with the VSC system off
● When an extreme change in vehicle height occurs
● When the radar sensor moves off position due to its surrounding area being
subjected to a strong impact
● Due to greatly turning the wheel when an obstacle suddenly appe ars ahead