sensor TOYOTA AVALON 2021 (in English) Service Manual

2784-5. Using the driving support systems
■Distance display
Sensors that detect an object will illuminate continuously or blink.
*: The images may differ from those shown in the illustrations. (P. 277)
Sensor detection display, object distance
Multi-
information
display
*
Insert
displayApproximate distance to object
Front and rear
center sensorFront and rear
corner sensor
(continuous)(blinking
slowly)
Far
NearFront center
sensor:
3.3 ft. (100 cm) to
2.4 ft. (73 cm)
Rear center
sensor:
4.9 ft. (150 cm) to
2.5 ft. (75 cm)

(continuous)(blinking)Front center
sensor:
2.4 ft. (73 cm) to
1.5 ft. (45 cm)
Rear center
sensor:
2.5 ft. (75 cm) to
1.5 ft. (45 cm)
2.6 ft. (80 cm) to
1.5 ft. (45 cm)
(continuous)(blinking
rapidly)1.5 ft. (45 cm) to
1.1 ft. (35 cm)
1.5 ft. (45 cm) to
1.1 ft. (35 cm)
(blinking)(continuous)Less than
1.1 ft. (35 cm)
Less than
1.1 ft. (35 cm)

2794-5. Using the driving support systems
4
Driving
■Buzzer operation and distance to an object
A buzzer sounds when the sensors are operating.
●The buzzer sounds faster as the vehicle approaches an object.
When the vehicle comes within the following distance of the
object, the buzzer sounds continuously: Approximately 1.2 ft. (35
cm).
●When 2 or more objects are detected simultaneously, the buzzer
system responds to the nearest object. If one or both come within
the above distances, the beep will repeat a long tone, followed by
fast beeps.
Approximately 3.3 ft. (100 cm)
Approximately 4.9 ft. (150 cm)
Approximately 2.6 ft. (80 cm)
The diagram shows the detection
range of the sensors. Note that the
sensors cannot detect objects that
are extremely close to the vehicle.
The range of the sensors may
change depending on the shape of
the object, etc.
Detection range of the sensors
1
2
3

2804-5. Using the driving support systems
■The intuitive parking assist can be operated when
●Front corner sensors:
• The engine switch is in IGNITION ON mode.
• The shift lever is in other than P.
• The vehicle speed is less than about 6 mph (10 km/h).
●Front center sensors:
• The engine switch is in IGNITION ON mode.
• The shift lever is in other than P or R.
• The vehicle speed is less than about 6 mph (10 km/h).
●Rear corner and rear center sensors:
• The engine switch is in IGNITION ON mode.
• The shift lever is in R.
• The vehicle speed is less than about 6 mph (10 km/h).
■Intuitive parking assist display
When an object is detected while the Toyota parking assist monitor or pan-
oramic view monitor is in use, the warning indicator will appear in the upper
part of the screen even if the display setting has been set to off.
■Sensor detection information
●The sensor’s detection areas are limited to the areas around the vehicle’s
bumper.
●Depending on the shape of the object and other factors, the detection dis-
tance may shorten, or detection may be impossible.
●Objects may not be detected if they are too close to the sensor.
●There will be a short delay between object detection and display. Even at
slow speeds, there is a possibility that the object will come within the sen-
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440051004700030057004b0048000300450058005d005d0048[r sounds.
●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.
■If a battery terminal has been disconnected and reconnected
The system needs to be initialized.
To initialize the system, drive the vehicle straight ahead for 5 seconds or more
at a speed of approximately 22 mph (35 km/h) or more.
■If “Parking Assist Unavailable 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 object may not be detected. If the sensor thaws out,
the system should return to normal.

2814-5. Using the driving support systems
4
Driving
■If “Parking Assist Unavailable” is displayed on the multi-information dis-
play
●Water may be continuously flowing over the sensor surface, such as in a
heavy rain. When the system determines that it is normal, the system will
return to normal.
●Initialization may not have been performed after a battery terminal was dis-
connected and reconnected. Initialize the system. If this message continues
to be displayed even after initialization, have the vehicle inspected by your
Toyota dealer.
■Certification
For vehicles sold in Canada
This ISM device complies with Canadian ICES-001.
Cet appareil ISM est conforme a la norme NMB-001 du Canada.
■Customization
Some functions can be customized. (P. 100, 506)
WARNING
■When using the intuitive parking assist
Observe the following precautions.
Failing to do so may result in the vehicle being unable to be driven 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 the brake to
control the vehicle’s speed.
●Do not install accessories within the sensors’ detection areas.

2824-5. Using the driving support systems
WARNING
■Sensors
Certain vehicle conditions and the surrounding environment may affect the
ability of a sensor to correctly detect an object. 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 objects may not be detected.
●The sensor is covered in any way.
●The vehicle is leaning considerably to one side.
●<0032005100030044005100030048005b00570055004800500048004f005c00030045005800500053005c00030055005200440047000f0003005200510003004400510003004c00510046004f004c00510048000f0003005200510003004a00550044005900
48004f000f0003005200550003005200510003004a00550044[ss.
●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.
●There is another vehicle equipped with parking assist sensors in the vicin-
ity.
●The sensor is coated with a sheet of spray or heavy rain.
●The sensor is drenched with water on a flooded road.
●The vehicle is equipped with a fender pole or wireless antenna.
●Towing eyelets are installed.
●The bumper or sensor receives a strong impact.
●The vehicle is approaching a tall or curved curb.
●The detection range is reduced due to an object such as a sign.
●In harsh sunlight or intense cold weather.
●The area directly under the bumpers is not detected.
●If objects draw too close to the sensor.
●A non-genuine Toyota suspension (lowered suspension, etc.) is installed.
●A backlit license plate is installed.
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.

2834-5. Using the driving support systems
4
Driving
WARNING
■Objects which may not be properly detected
The shape of the object may prevent a sensor from detecting it. Pay partic-
ular attention to the following objects:
●Wires, fences, ropes, etc.
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03005a0044005900480056[
●Sharply-angled objects
●Low objects
●Tall objects with upper sections projecting outwards in the direction of your
vehicle
●<0033004800520053004f0048000300500044005c00030051005200570003004500480003004700480057004800460057004800470003004c004900030057004b0048005c00030044005500480003005a004800440055004c0051004a000300460048005500
570044004c005100030057005c005300480056000300520049[ clothing.
●Moving objects such as people or animals
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.
●The intuitive parking assist operation display flashes, and a buzzer sounds
when no objects 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
volume is muted.
●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 area.
Doing so may result in the sensor malfunctioning.

2844-5. Using the driving support systems
The system will operate in situations such as the following if an object
is detected in the traveling direction of the vehicle.
◆When traveling at a low speed and the brake pedal is not
depressed, or is depressed late
Intelligent Clearance Sonar (ICS)
: If equipped
If a collision with an object may occur due to the vehicle sud-
denly moving forward due to an accidental accelerator pedal
operation, the vehicle moving the unintended direction due to
the wrong shift position being selected, or while parking or trav-
eling at low speeds, the sensors detect objects, such as a wall,
in the traveling direction of the vehicle, and the system operates
to lessen an impact with an object and reduce the resulting dam-
age.
Examples of system operation

2864-5. Using the driving support systems
If a radar sensor detects a vehicle approaching from the right or left at
the rear of the vehicle and a collision may occur, this function will per-
form brake control to reduce the likelihood of an impact with the
approaching vehicle.
■Examples of system operation
The system will operate in situations such as the following if an
object is detected in the traveling direction of the vehicle.
◆When reversing, a vehicle is approaching and the brake pedal
is not depressed, or is depressed late
Rear Cross Traffic Auto Brake function

2874-5. Using the driving support systems
4
Driving
Front corner sensors
Front center sensors
Rear corner sensors
Rear center sensors
Press
/ of the meter con-
trol switches, select .
Press
/ of the meter con-
trol switches, select .
Press of the meter con-
trol switch.
Select the “Yes” and push .
When the Intelligent Clearance Sonar is disabled, the ICS OFF indicator
illuminates.
To re-enable the system when it was disabled, select on the multi-infor-
mation display, select and then “On”. If disabled using this method, the
system will not be re-enabled by turning the engine switch off and then to
IGNITION ON mode.
Types of sensors
1
2
3
4
Turning the Intelligent Clearance Sonar system on/off
1
2
3
4

2924-5. Using the driving support systems
■Re-enabling the Intelligent Clearance Sonar system
To re-enable the Intelligent Clearance Sonar system when it is disabled due
to operation of the Intelligent Clearance Sonar function, either enable the sys-
tem again (P. 287), or turn the engine switch off and then back to IGNITION
ON mode.
Additionally, if the object becomes no longer in the traveling direction of the
vehicle or if the traveling direction of the vehicle changes (such as changing
from moving forward to backing up, or from backing up to moving forward),
the system will be re-enabled automatically.
■Objects that the Intelligent Clearance Sonar function may not detect
The sensors may not be able to detect certain objects, such as the following.
●Cotton cloth, snow, and other materials that are poor reflectors of ultrasonic
waves.
(People may also not be detected depending on the type of clothing they are
wearing.)
●Objects which are not perpendicular to the ground, are not perpendicular to
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030052005500030044005500480003005a00440059004c0051[g.
●Low objects
●Thin objects such as wires, fences, ropes and signposts
●Objects that are extremely close to the bumper
■Situations in which the Intelligent Clearance Sonar may not operate
properly
When the shift lever is in N
■Intuitive parking assist buzzer
Regardless of whether the intuitive parking assist system is enabled or not
(P. 276), if the Intelligent Clearance Sonar system is enabled (P. 287),
the front or rear sensors detect an object and brake control is performed, the
intuitive parking assist buzzer will sound to notify the driver of the approxi-
mate distance to the object.