Toyota Avalon (2019 year). Manual - part 18

273

4-5. Using the driving support systems

ivi

WARNING

■

Obstacles which may not be properly detected
The shape of the obstacle may prevent a sensor from detecting it. 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

●

People may not be detected if they are wearing certain types of 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 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
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.

274

4-5. 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

275

4-5. Using the driving support systems

ivi

◆

When the accelerator pedal is depressed excessively

◆

When the vehicle moves in the unintended direction due to the
wrong shift position being selected

276

4-5. 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

277

4-5. Using the driving support systems

ivi

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

278

4-5. Using the driving support systems

If the engine output restriction control or brake control operates, a
buzzer will sound and a message will be displayed on the multi-infor-
mation display to alert the driver.

Depending on the situation, engine output restriction control will operate to
either limit acceleration or restrict output as much as possible.

Displays and buzzers for engine output restriction control and
brake control

Control

Situation

Multi-information

display

ICS OFF

Indicator

Buzzer

Engine output
restriction con-
trol is operating
(acceleration
restriction)

Acceleration
greater than a
certain amount is
not possible.

“Object Detected
Acceleration
Reduced”

Not illu-
minated



Engine output
restriction con-
trol is operating
(output restricted
as much as pos-
sible)

Stronger-than-
normal brake
operation is nec-
essary.

“Brake!”

Short
beep

Brake control is
operating

Emergency brak-
ing is necessary.

Vehicle stopped
by system opera-
tion

The vehicle has
been stopped by
brake control
operation.

If the accelera-
tor pedal is
depressed:
“Switch to
Brake”
If the accelera-
tor pedal is not
depressed:
“Brake”

Illumi-
nated

279

4-5. Using the driving support systems

ivi

If the Intelligent Clearance Sonar function detects that a collision with
an  object  is  possible,  the  engine  output  will  be  restricted  to  restrain
any increase in the vehicle speed. (Engine output restriction control:
See A below.)
Additionally,  if  the  accelerator  pedal  continues  to  be  depressed,  the
brakes  will  be  applied  automatically  to  reduce  the  vehicle  speed.
(Brake control: See B below.)

Intelligent Clearance Sonar function

280

4-5. Using the driving support systems

Off

Time

Down

Off

Time

Off

Time

Down

Accelerator pedal
Brake pedal
Engine output
Braking force

Start of control
High possibility of a collision
Extremely high possibility of a
collision

1
2
3
4

5
6
7

281

4-5. Using the driving support systems

ivi

■

The Intelligent Clearance Sonar function will operate when
The function will operate when the ICS OFF indicator is not illuminated or
flashing (

P. 277, 285) 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 and 6 to 13 ft. (2

to 4 m) away.

• The system determines that a stronger-than-normal brake operation is

necessary to avoid a collision.

●

Brake control
• Engine output restriction control is operating.
• The system determines that an emergency brake operation is necessary

to avoid a collision.

■

The Intelligent Clearance Sonar function will stop operating when
The function will stop operating if any of the following conditions 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 brake 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 Intelligent Clearance Sonar function
The detection range of the Intelligent Clearance Sonar function differs from
the detection range of the intuitive parking assist. (

P. 269)

Therefore, even if the intuitive parking assist detects an object 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 Clearance Sonar
function, the Intelligent Clearance Sonar system will be disabled and the ICS
OFF indicator will illuminate.

282

4-5. 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. 277), 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
the traveling direction of the vehicle, are uneven or are waving.

●

Low objects

●

Thin objects such as wires, fences, ropes and signposts

●

Objects that are extremely close to the bumper

■

Intuitive parking assist buzzer
Regardless of whether the intuitive parking assist system is enabled or not
(

P. 266), if the Intelligent Clearance Sonar system is enabled (P. 277),

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.

283

4-5. Using the driving support systems

ivi

■

Situations in which the Intelligent Clearance Sonar function may operate
even if there is no possibility of a collision
In some situations such as the following, the Intelligent Clearance Sonar
function may operate even though there is no possibility of a collision.

●

Vehicle surroundings

• When driving toward a banner, flag, low-hanging branch or boom barrier

(such as those used at railroad crossings, toll gates and parking 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 for 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 sandstorm

●

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 wireless 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

284

4-5. Using the driving support systems

●

Changes in the vehicle posture
• If the vehicle is significantly tilted
• If the front of the vehicle is raised or lowered due to the carried load
• If the orientation of a sensor has been changed due to a collision or other

impact

■

If the Intelligent Clearance Sonar function operates unnecessarily such
as at a railroad crossing
Even in the event that the Intelligent Clearance Sonar function operates
unnecessarily, such as at a railroad crossing, brake control will be canceled
after approximately 2 seconds, allowing you to proceed forward and leave the
area, Brake control can also be canceled by depressing the brake pedal.
Depressing the accelerator pedal again will allow you to proceed forward and
leave the area.

■

Situations in which the Intelligent Clearance Sonar Brake function may
not operate properly
In some situations such as the following, this function may not operate prop-
erly.

●

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 sandstorm

●

Vehicle surroundings
• When an object that cannot be detected is between the vehicle and a

detected object

• If an object such as a vehicle, motorcycle, bicycle or pedestrian cuts in

front of the vehicle or runs out from the side of the vehicle.

• When a sensor or the area around a

sensor is extremely hot or cold

• When strong winds are blowing

285

4-5. Using the driving support systems

ivi

●

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 wireless antenna
is installed near a sensor

●

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

●

A sensor may be covered with ice, snow, dirt, etc. Remove the ice, snow,
dirt, etc., from the sensor to return the system to normal.
Also, due to ice forming on a sensor at low temperatures, a warning mes-
sage may be displayed or the sensor may not be able to detect an object.
Once the ice melts, the system will return to normal.

●

If this message continues to be displayed even after cleaning the sensor, or
is displayed even though the sensor is clean, have the vehicle inspected by
your Toyota dealer.

●

Initialization may not have been performed after a battery terminal was dis-
connected and reconnected. Initialize the system. (

P. 285)

286

4-5. Using the driving support systems

WARNING

■

Limitations of the Intelligent Clearance Sonar system
Do not overly rely on the system, as doing so may lead to an accident.

●

The driver is solely responsible for safe driving. Always drive carefully, tak-
ing care to observe your surroundings. The Intelligent Clearance Sonar
system is designed to provide support to lessen the severity of collisions.
However, it may not operate in some situations.

●

The Intelligent Clearance Sonar system is not designed to stop the vehicle
completely. Additionally, even if the system has stopped the vehicle, it is
necessary to depress the brake pedal immediately as brake control will be
canceled after approximately 2 seconds.

■

To ensure the Intelligent Clearance Sonar system can operate properly
Observe the following precautions regarding the sensors (

P. 277). Failure

to do so may cause a sensor to not operate properly, and may cause an
accident.

●

Do not modify, disassemble or paint the sensors.

●

Do not replace a sensor with a part other than a genuine part.

●

Do not subject a sensor or its surrounding area to a strong impact.

●

Do not damage the sensors, and always keep them clean.

Observe the following precautions regarding the radar sensors (

P. 254).

Failure to do so may cause a radar sensor to not operate properly, and may
cause an accident.

●

Do not modify, disassemble or paint the sensors.

●

Do not replace a radar sensor with a part other than a genuine part.

●

Do not subject a radar sensor or its surrounding area to a strong impact.

●

Do not damage the radar sensors, and always keep the radar sensors and
their surrounding area on the bumper clean.

■

Handling the suspension
Do not modify the suspension, as changes to the height or inclination of the
vehicle may prevent the sensors from detecting objects correctly or cause
the system to not operate or operate unnecessarily.

287

4-5. Using the driving support systems

ivi

NOTICE

■

To prevent the system from malfunctioning

●

If the area around a sensor is subjected to an impact, the system may not
operate properly due to the sensor being misaligned. Have the vehicle
inspected by your Toyota dealer.

●

When using a high pressure washer to wash the vehicle, do not spray the
sensors directly, as doing so may cause a sensor to malfunction.

●

When using steam to clean the vehicle, do not direct steam too close to
the sensors as doing so may cause a sensor to malfunction.

■

To prevent a radar sensor from malfunctioning

●

If the area around a radar sensor is subjected to an impact, the system
may not operate properly due to a sensor malfunction. Have the vehicle
inspected by your Toyota dealer.

●

Observe the radar sensor handling precautions. (

P. 254)

■

To prevent unnecessary operation of the Intelligent Clearance Sonar
system
In the following situations, disable the Intelligent Clearance Sonar system
as the system may operate even though there is no possibility of a collision.

●

When inspecting the vehicle using a chassis roller, chassis dynamo or free
roller

●

When loading the vehicle onto a boat, truck or other transport vessel

●

If the suspension has been modified or tires of a size other than specified
are installed

●

If the front of the vehicle is raised or lowered due to the carried load

●

When equipment that may obstruct a sensor is installed, such as a towing
eyelet, bumper protector (an additional trim strip, etc.), bicycle carrier, or
snow plow

288

4-5. Using the driving support systems

If the Rear Cross Traffic Auto Brake function detects that a collision
with  an  approaching  vehicle  is  possible,  the  engine  output  will  be
restricted  to  restrain  any  increase  in  vehicle  speed.  (Engine  output
restriction control: See A below.)
Additionally,  if  the  accelerator  pedal  continues  to  be  depressed,  the
brakes  will  be  applied  automatically  to  reduce  the  vehicle  speed.
(Brake control: See B below.)

Rear Cross Traffic Auto Brake function

Content .. 16 17 18 19 ..