2022 TOYOTA AVALON engine

3084-5. Using the driving support systems
If the Intelligent Clearance Sona r function detects that a collision with
an object is possible, the engine output will be restricted to restrain
any increase in the vehicle spee d. (Engine output restriction control:
See A below.)
Additionally, if the accelerator pedal continues to be depresse d, the
brakes will be applied automatically to reduce the vehicle spee d.
(Brake control: See B below.)
Intelligent Clearance Sonar function

3094-5. Using the driving support systems
4
Driving
OnOff
Time
Down
OnOff
Time
On Off
Time
Down
Up
Accelerator pedal
Brake pedal
Engine output
Braking force Start of control
High possibility of a collision
Extremely high possibility of a
collision1
2
3
4
5
6
7

3104-5. Using the driving support systems
■The Intelligent Clearance Sonar function will operate when
The function will operate when the ICS OFF indicator is not illuminated or
flashing ( P. 306, 314) and all of the following conditions are met:
● Engine output restriction control
• The Intelligent Clearance Sonar system is enabled.
• The vehicle speed is 10 mph (15 km/h) or less.
• There is an object in the traveling direction of the vehicle a nd 6 to 13 ft. (2
to 4 m) away.
• The system determines that a stronger-than-normal brake operat ion is
necessary to avoid a collision.
● Brake control
• Engine output restriction control is operating.
• The system determines that an emergency brake operation is nec essary
to avoid a collision.
■ The Intelligent Clearance Sonar function will stop operating when
The function will stop operating if any of the following condit ions are met:
● Engine output restriction control
• The Intelligent Clearance Sonar system is disabled.
• The collision becomes avoidable with normal brake operation.
• The object is no longer 6 to 13 ft. (2 to 4 m) away in the traveling direction
of the vehicle.
● Brake control
• The Intelligent Clearance Sonar system is disabled.
• Approximately 2 seconds elapse after the vehicle is stopped by brake
control.
• The brake pedal is depressed after the vehicle is stopped by b rake con-
trol.
• The object is no longer 6 to 13 ft. (2 to 4 m) away in the traveling direction of the vehicle.
■ Detection range of the Intellig ent Clearance Sonar function
The detection range of the Intelligent Clearance Sonar function differs from
the detection range of the intuitive parking assist. ( P. 298)
Therefore, even if the intuitive parking assist detects an obje ct and provides a
warning, the Intelligent Clearance Sonar function may not start operating.
■ If the Intelligent Clearance Sonar function has operated
If the vehicle is stopped due to operation of the Intelligent C learance Sonar
function, the Intelligent Clearance Sonar system will be disabl ed and the ICS
OFF indicator will illuminate.

3114-5. Using the driving support systems
4
Driving
■Re-enabling the Intellig ent 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. 306), or turn the engine switch off and then back to IGNITIO N
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 d etect
The sensors may not be able to detect certain objects, such as the following.
● Cotton cloth, snow, and other materials that are poor reflector s of ultrasonic
waves.
(People may also not be detected depending on the type of cloth ing they are
wearing.)
● Objects which are not perpendicular to the ground, are not perp endicular to
the traveling direction of the vehicle, are uneven or are wavin 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 ope rate
properly
When the shift lever is in N
■ Intuitive parking assist buzzer
Regardless of whether the intuitive parking assist system is en abled or not
( P. 295), if the Intelligent Clearance Sonar system is enabled ( P. 306),
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.

3124-5. Using the driving support systems
■Situations in which the Intellige nt Clearance Sonar function ma y operate
even if there is no possibility of a collision
In some situations such as the following, the Intelligent Clear ance Sonar
function may operate even though there is no possibility of a c ollision.
● Vehicle surroundings
• When driving toward a banner, flag, low-hanging branch or boom barrier
(such as those used at railroad crossings, toll gates and parki ng lots).
• When driving on a narrow path surrounded by a structure, such as in a
tunnel or on an iron bridge
• When parallel parking
• When there is a rut or hole in the surface of the road
• When driving on a metal cover (grating), such as those used fo r drainage
ditches
• When driving on a steep slope
• If a sensor is hit by a large amount of water, such as when driving on a flooded road
● Weather
• If a sensor is covered with ice, snow, dirt, etc. (when cleared, the system
will return to normal)
• If heavy rain or water strikes a sensor
• When driving in inclement weather such as fog, snow or a sands torm
● Other ultrasonic waves sources
• 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 a sticker or an electronic component, such as a backlit license plate (especially fluorescent type), fog lights, a fender pole or wir eless antenna
is installed near a sensor
• When driving on a narrow road
• When driving on a gravel road or in
an area with tall grass

3144-5. Using the driving support systems
●Other ultrasonic waves sources
• 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 a sticker or an electronic component, such as a backlit license plate
(especially fluorescent type), fog lights, a fender pole or wir eless antenna
is installed near a sensor
● Changes in the vehicle posture
• If the vehicle is significantly tilted
• If the front of the vehicle is raised or lowered due to the ca rried load
• If the orientation of a sensor has been changed due to a collision or other impact
■ 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 “ICS Unavailable” is displayed on the multi-information display and
the ICS OFF indicator is flashing
Initialization may not have been performed after a battery term inal was dis-
connected and reconnected. Initialize the system. ( P. 314)
If this message continues to be displayed even after initializa tion, have the
vehicle inspected by your Toyota dealer.
■ If “ICS Unavailable” and “Parking Assist Unavailable Clean Park ing
Assist Sensor” are displayed on th e multi-information display and the
ICS OFF indicator is flashing
● A sensor may be covered with ice, snow, dirt, etc. In this case , remove the
ice, snow, dirt, etc., from the sensor to return the system to normal. If this
message is shown even after removing dirt from the sensor, or s hown when
the sensor was not dirty to begin with, have the vehicle inspec ted at your
Toyota dealer.
● A sensor may be frozen. Once the ice melts, the system will ret urn to nor-
mal.
● 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.

3174-5. Using the driving support systems
4
Driving
If the Rear Cross Traffic Auto Brake function detects that a collision
with an approaching vehicle is pos sible, the engine output will be
restricted to restrain any incre ase in vehicle speed. (Engine output
restriction control: See A below.)
Additionally, if the accelerator pedal continues to be depresse d, the
brakes will be applied automatically to reduce the vehicle spee d.
(Brake control: See B below.)
Rear Cross Traffic Auto Brake function

3184-5. Using the driving support systems
On
Off
Time
Down
OnOff
Time
On Off
Time
Down
Up
Accelerator pedal
Brake pedal
Engine output
Braking force Start of control
High possibility of a collision
Extremely high possibility of a
collision1
2
3
4
5
6
7