Lexus CT (2021 year). Manual in english — page 14

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4-5. Using the driving support systems

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■

Conditions under which the vehicle-to-vehicle distance control mode may not function

correctly

In the case of the following conditions, operate the brake pedal (or accelerator pedal,

depending on the situation) as necessary.

As the sensor may not be able to correctly detect vehicles ahead, the system may not

operate properly.

●

When the vehicle ahead of you decelerates suddenly

●

When driving on a road surrounded by a structure, such as in a tunnel or on a bridge

●

While the vehicle speed is decreasing to the set speed after the vehicle accelerates by

depressing the accelerator pedal

●

When the road curves or when the lanes are

narrow

●

When steering wheel operation or your posi-

tion in the lane is unstable

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4-5. Using the driving support systems

Cruise control



Use the cruise control to maintain a set speed without depressing the accelera-
tor pedal.

Indicator
Display
Cruise control switch

Press the “ON-OFF” button to acti-
vate the cruise control.

Cruise control indicator will come on.
Press the button again to deactivate the

cruise control.

Accelerate or decelerate the vehicle
to the desired speed, and push the
lever down to set the speed.

“SET” will be displayed.
The vehicle speed at the moment the

lever is released becomes the set speed.



: If equipped

Summary of functions

1

2
3

Setting the vehicle speed

1

2

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4-5. Using the driving support systems

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To change the set speed, operate the lever until the desired set speed is obtained.

Increases the speed
Decreases the speed

Fine adjustment: Momentarily move the

lever in the desired direction.
Large adjustment: Hold the lever in the

desired direction.

The set speed will be increased or decreased as follows:
Fine adjustment: By approximately 1.6 km/h (1 mph) each time the lever is operated
Large adjustment: The set speed can be increased or decreased continually until the

lever is released.

Pulling the lever toward you cancels
the constant speed control.

The speed setting is also canceled when

the brakes are applied.

Pushing the lever up resumes the
constant speed control.

Resuming is available when the vehicle

speed is more than approximately 40

km/h (25 mph).

Adjusting the set speed

1

2

Canceling and resuming the constant speed control

1

2

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4-5. Using the driving support systems

■

Cruise control can be set when

●

The shift position is in D.

●

Vehicle speed is above approximately 40 km/h (25 mph).

■

Accelerating after setting the vehicle speed

●

The vehicle can be accelerated normally. After acceleration, the set speed resumes.

●

Even without canceling the cruise control, the set speed can be increased by first accel-

erating the vehicle to the desired speed and then pushing the lever down to set the new

speed.

■

Automatic cruise control cancelation

Cruise control will stop maintaining the vehicle speed in any of the following situations.

●

Actual vehicle speed falls more than approximately 16 km/h (10 mph) below the preset

vehicle speed.

At this time, the memorized set speed is not retained.

●

Actual vehicle speed is below approximately 40km/h (25 mph).

●

VSC is activated.

■

If the warning message for the cruise control is shown on the multi-information display

Press the “ON-OFF” button once to deactivate the system, and then press the button

again to reactivate the system.

If the cruise control speed cannot be set or if the cruise control cancels immediately after

being activated, there may be a malfunction in the cruise control system. Have the vehi-

cle inspected by any authorized Lexus retailer or Lexus authorized repairer, or any reli-

able repairer.

WARNING

■

To avoid operating the cruise control by mistake

Switch the cruise control off using the “ON-OFF” button when not in use.

■

Situations unsuitable for cruise control

Do not use cruise control in any of the following situations.

Doing so may result in loss of control and could cause an accident resulting in death or

serious injury.

●

In heavy traffic

●

On roads with sharp bends

●

On winding roads

●

On slippery roads, such as those covered with rain, ice or snow

●

On steep hills

Vehicle speed may exceed the set speed when driving down a steep hill.

●

During emergency towing

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Lexus parking assist-sensor



Front corner sensors
Rear corner sensors
Rear center sensors

Turns the Lexus parking assist-sensor
on/off

When on, the indicator light comes on

to inform the driver that the system is

operational.



: If equipped

The distance from your vehicle to nearby obstacles when parallel parking or
maneuvering into a garage is measured by the sensors and communicated via
the displays and a buzzer. Always check the surrounding area when using this
system.

Types of sensors

1

2
3

Lexus parking assist-sensor switch

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4-5. Using the driving support systems

When the sensors detect an obstacle, the following displays inform the driver of
the position and distance to the obstacle.

■

Multi-information display

Front corner sensor operation
Rear corner sensor operation
Rear center sensor operation

■

Lexus Display Audio screen (if equipped)

Lexus parking assist-sensor dis-
play

When the rear view monitor system

*

or Lexus parking assist monitor

*

is

not displayed.
A graphic is automatically displayed

when an obstacle is detected. The

screen can be set so that the graphic

is not displayed. (



P. 354)

: Select to mute the buzzer

sounds.

Insert display

When the rear view monitor system

*

or Lexus parking assist monitor

*

is

displayed.
A simplified image is displayed on

the right upper corner of the naviga-

tion system screen when an obstacle

is detected.

*

: if equipped

Display

1

2
3

1

2

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4-5. Using the driving support systems

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Navigation system screen (if equipped)

Lexus parking assist-sensor display

A graphic is automatically displayed

when an obstacle is detected. The

screen can be set so that the graphic

is not displayed. (



P. 354)

: Select to mute the buzzer

sounds.

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4-5. Using the driving support systems

■

Distance display

Sensors that detect an obstacle will illuminate continuously or blink.

*

1

: The images may differ from that shown in the illustrations. (



P. 350)

*

2

: Multi-information display

*

3

: Lexus Display Audio or navigation system screen

*

4

: Lexus Display Audio only

Sensor detection display, obstacle distance

Display

*

1

Insert display

*

4

Approximate distance to obstacle

Front and rear corner

sensor

Rear center sensor

(continuous)

(blinking slowly)



150 cm (4.9 ft.) to

60 cm (2.0 ft.)

(continuous)

(blinking)

Front corner sensor:

50 cm (1.6 ft.) to 40

cm (1.3 ft.)

Rear corner sensor:

60 cm (2.0 ft.) to 45

cm (1.5 ft.)

60 cm (2.0 ft.) to

45 cm (1.5 ft.)

(continuous)

(blinking rapidly)

Front corner sensor:

40 cm (1.3 ft.) to 30

cm (1.0 ft.)

Rear corner sensor:

45 cm (1.5 ft.) to 30

cm (1.0 ft.)

45 cm (1.5 ft.) to

35 cm (1.2 ft.)

(blinking

*

2

or

continuous

*

3

)

(continuous)

Less than

30 cm (1.0 ft.)

Less than

35 cm (1.2 ft.)

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Buzzer operation and distance 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: Approximately 30 cm (1.0 ft.)
• Rear corner sensors: Approximately 30 cm (1.0 ft.)
• Rear center sensors: Approximately 35 cm (1.2 ft.)

●

When 2 or more obstacles are detected simultaneously, the buzzer system
responds to the nearest obstacle. If one or both come within the above dis-
tances, the beep will repeat a long tone, followed by fast beeps.

Approximately 50 cm (1.6 ft.)
Approximately 60 cm (2.0 ft.)
Approximately 150 cm (4.9 ft.)

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.

Detection range of the sensors

1

2
3

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4-5. Using the driving support systems

You can change the buzzer sounds volume and the screen operating conditions
when the power switch is in ON mode.



Lexus Display Audio system
Press the “MENU” button on the Lexus Display Audio controller, and then
select

on the screen.

Select “Vehicle”, and then select “LEXUS park assist” on the screen.
Select the desired item.



Navigation system
Press the “MENU” button on the Remote Touch, and then select

on the

screen.
Select “Vehicle”, and then select “LEXUS park assist” on the screen.
Select the desired item.

The buzzer sounds volume can be adjusted.
On or off can be selected for Lexus parking assist-sensor display.
Rear center sensors display and tone indication can be set.

Setting up Lexus parking assist-sensor (vehicles with a Lexus Display
Audio or navigation system)

1

2
3

1

2
3



Lexus Display Audio screen



Navigation system

1

2
3

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The Lexus parking assist-sensor 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 10 km/h (6 mph).

(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.

■

Lexus parking assist-sensor display

When an obstacle is detected while the rear view monitor system or Lexus parking assist

monitor is in use, the warning indicator will appear in the upper corner 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.

●

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 prob-

lem.)

• 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.

• 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 producing ultrasonic 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.

• 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 Lexus suspension (lowered suspension etc.) is installed.

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

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4-5. Using the driving support systems

●

The shape of the obstacle may prevent a sensor from detecting it. Pay particular atten-

tion 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 vehi-

cle

●

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 sensor.

• There will be a short delay between obstacle detection and display. Even at slow

speeds, there is a possibility that the obstacle will come within the sensor’s detection

areas before the display is shown and the buzzer 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 message is displayed on the multi-information display



P. 671

■

Customization

Settings (e.g. buzzer sounds volume) can be changed.

(Customizable features:



P. 742)

WARNING

■

When using the Lexus parking assist-sensor

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 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 vehi-

cle) for safety, and drive slowly, using the brake to control the vehicle’s speed.

●

Do not install accessories within the sensors’ detection areas.

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NOTICE

■

When using Lexus parking assist-sensor

In the following situations, the system may not function correctly due to a sensor mal-

function etc. Have the vehicle checked by any authorized Lexus retailer or Lexus

authorized repairer, or any reliable repairer.

●

The Lexus parking assist-sensor 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 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 area.
Doing so may result in the sensor malfunctioning.

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4-5. Using the driving support systems

Rear view monitor system



The rear view image is displayed when the shift position is in R and the power
switch is in ON mode.

The rear view monitor system will be deactivated when the shift position is in any posi-

tion other than R.
Lexus Display Audio system type: When the shift position is shifted to R and any mode

button (such as “MENU”) is pressed, the rear view monitor system is canceled, and

the screen is switched to the mode of the button that was pressed.



: If equipped

The rear view monitor system assists the driver by displaying guide lines and
an image of the view behind the vehicle while backing up, for example while
parking.

The screen illustrations used in this text are intended as examples, and may dif-
fer from the image that is actually displayed on the screen.



Rear view mirror type



Lexus Display Audio system type

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●

To temporarily turn off the monitor
when it is on.
Push the “AUTO” button. The indica-
tor should turn orange.
The monitor will automatically turn
on again after the power switch is
turned off and ON mode.

●

To manually turn on the monitor
when it is turned off.
Push the “AUTO” button. The indica-
tor should turn green.

■

When using the rear view monitor system

The anti-glare function of the inside rear view mirror will be canceled.

■

Automatic shut off

The display will be turned off automatically after 5 minutes.

■

Display mode

The rear view monitor display mode can be adjusted when the power switch is
in ON mode and the shift position is in R.

●

To select a display language (English, French, Spanish or Arabic [if
equipped]).

Push and hold the “AUTO” button for 6 to 12 seconds.
The monitor should turn on and the indicator should turn green.

Push the “AUTO” button.

Each time the “AUTO” button is pushed and released, the language will
change.
The warning message should flash 5 seconds after the button is
released, indicating that the change has been completed.

Switching the screen (rear view mirror type)

1

2

3

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4-5. Using the driving support systems

●

To permanently disable the monitor.
Push and hold the “AUTO” button for 12 to 15 seconds.
The monitor will turn off and on after 6 seconds. Continue holding the but-
ton down until the display turns back off.
The indicator should flash orange.
The monitor will not automatically turn on again after the power switch is
turned off and ON mode.

●

To manually turn on the monitor when it is turned off.
Push the “AUTO” button. The indicator should turn green.

■

Screen description

The rear view monitor system screen will be displayed if the shift position is
shifted to R while the power switch is in ON mode.

Vehicle width guide line

The line indicates a guide path when the vehicle is being backed straight up.

The displayed width is wider than the actual vehicle width.

Vehicle center guide line

These lines indicate the estimated vehicle center on the ground.

Distance guide line (red)

The line shows distance behind the vehicle, a point approximately 0.5 m (1.5 ft.)

from the edge of the bumper.

Distance guide line (blue)

The line shows distance behind the vehicle, a point approximately 1 m (3 ft.) from

the edge of the bumper.

Lexus parking assist-sensor display (if equipped)

Lexus Display Audio system type: If an obstacle is detected while the Lexus park-

ing assist-sensor is on, a display is shown at the top right corner of the screen.

Using the rear view monitor system

1

2

3

4

5