LEXUS LX 570 (2019 year). Instruction - part 17

267

LDA (Lane Departure Alert)



When driving on roads with white (yellow) lines, this function alerts the driver
when the vehicle might depart from its lane.
The LDA system recognizes visible
white (yellow) lines with the camera
sensor on the upper portion of the front
windshield.

◆

Lane departure alert function

When the system determines that
the vehicle might depart from its
lane, a warning is displayed on the
multi-information display, and either
the warning buzzer sounds or the
steering wheel vibrates to alert the
driver.

When the warning buzzer sounds or

the steering wheel vibrates, check

the surrounding road situation and

carefully operate the steering wheel

to move the vehicle back to the cen-

ter of the lane.



: If equipped

Summary of functions

Functions included in LDA system

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4-5. Using the driving support systems

◆

Vehicle sway warning function

When the vehicle is swaying or
appears as if it may depart from its
lane multiple times, the warning
buzzer sounds and a message is dis-
played on the multi-information dis-
play to alert the driver.

WARNING

■

Before using LDA system
Do not rely solely upon the LDA system. The LDA system does not automatically drive

the vehicle or reduce the amount of attention that must be paid to the area in front of

the vehicle. The driver must always assume full responsibility for driving safely by pay-

ing careful attention to the surrounding conditions and operating the steering wheel to

correct the path of the vehicle. Also, the driver must take adequate breaks when

fatigued, such as from driving for a long period of time.

Failure to perform appropriate driving operations and pay careful attention may lead to

an accident, resulting in death or serious injury.

■

To avoid operating LDA system by mistake
When not using the LDA system, use the LDA switch to turn the system off.

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4-5. Using the driving support systems

iving

Press the LDA switch to turn the LDA
system on.

The LDA indicator illuminates.
Press the LDA switch again to turn the

LDA system off.
When the LDA system is turned on or

off, operation of the LDA system contin-

ues in the same condition the next time

the engine is started.

WARNING

■

Situations unsuitable for LDA system
Do not use the LDA system in the following situations.

The system may not operate properly and lead to an accident, resulting in death or

serious injury.

●

A spare tire, tire chains, etc. are equipped.

●

Objects or patterns that could be mistaken for white (yellow) lines are present on the

side of the road (guardrails, curbs, reflective poles, etc.).

●

Vehicle is driven on a snow-covered road.

●

White (yellow) lines are difficult to see due to rain, snow, fog, dust, etc.

●

Asphalt repair marks, white (yellow) line marks, etc. are present due to road repair.

●

Vehicle is driven in a temporary lane or restricted lane due to construction work.

●

Vehicle is driven in a construction zone.

■

Preventing LDA system malfunctions and operations performed by mistake

●

Do not modify the headlights or place stickers, etc. on the surface of the lights.

●

Do not modify the suspension etc. If the suspension etc. needs to be replaced, con-

tact your Lexus dealer.

●

Do not install or place anything on the hood or grille. Also, do not install a grille guard

(bull bars, kangaroo bar, etc.).

●

If your windshield needs repairs, contact your Lexus dealer.

Turning LDA system on

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4-5. Using the driving support systems

Lane departure alert function display

Displayed when the multi-informa-
tion display is switched to the driving
assist system information screen.

Indications on multi-information display



Inside of displayed white lines is
white



Inside of displayed white lines is
black

Indicates that the system is recognizing
white (yellow) lines. When the vehicle
departs from its lane, the white line dis-
played on the side the vehicle departs
from flashes orange.

Indicates that the system is not able to
recognize white (yellow) lines or is
temporarily canceled.

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4-5. Using the driving support systems

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■

Operation conditions of each function

●

Lane departure alert function
This function operates when all of the following conditions are met.
• LDA is turned on.

• Vehicle speed is approximately 32 mph (50 km/h) or more.

• System recognizes white (yellow) lines.

• Width of traffic lane is approximately 9.8 ft. (3 m) or more.

• Turn signal lever is not operated.

• Vehicle is driven on a straight road or around a gentle curve with a radius of more

than approximately 492 ft. (150 m).

• No system malfunctions are detected. (

P. 273)

●

Vehicle sway warning function
This function operates when all of the following conditions are met.

• Setting for “Sway Warning” in

(Settings display) of the multi-information dis-

play is set to “On”. (

P. 584)

• Vehicle speed is approximately 32 mph (50 km/h) or more.

• Width of traffic lane is approximately 9.8 ft. (3 m) or more.

• No system malfunctions are detected. (

P. 273)

■

Temporary cancellation of functions
When the operation conditions are no longer met, a function may be temporarily can-

celed. However, when the operation conditions are met again, operation of the function

is automatically restored. (

P. 271)

■

Lane departure alert function
The warning buzzer may be difficult to hear due to external noise, audio playback, etc.

Also, it may be difficult to feel steering wheel vibrations due to the road conditions etc.

■

Vehicle sway warning function

■

White (yellow) lines are only on one side of road
The LDA system will not operate for the side on which white (yellow) lines could not be

recognized.

When the system determines that the vehicle is

swaying while the vehicle sway warning function

is operating, a buzzer sounds and a warning

message urging the driver to rest and the sym-

bol shown in the illustration are simultaneously

displayed on the multi-information display.
Depending on the vehicle and road conditions,

the warning may not operate.

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4-5. Using the driving support systems

■

Conditions in which functions may not operate properly
In the following situations, the camera sensor may not detect white (yellow) lines and var-

ious functions may not operate normally.

●

There are shadows on the road that run parallel with, or cover, the white (yellow) lines.

●

The vehicle is driven in an area without white (yellow) lines, such as in front of a tollgate

or checkpoint, or at an intersection, etc.

●

The white (yellow) lines are cracked, “Botts’ dots”, “Raised pavement marker” or stones

are present.

●

The white (yellow) lines cannot be seen or are difficult to see due to sand, etc.

●

The vehicle is driven on a road surface that is wet due to rain, puddles, etc.

●

The traffic lines are yellow (which may be more difficult to recognize than lines that are

white).

●

The white (yellow) lines cross over a curb, etc.

●

The vehicle is driven on a bright surface, such as concrete.

●

The vehicle is driven on a surface that is bright due to reflected light, etc.

●

The vehicle is driven in an area where the brightness changes suddenly, such as at the

entrances and exits of tunnels, etc.

●

Light from the headlights of an oncoming vehicle, the sun, etc. enters the camera.

●

The vehicle is driven where the road diverges, merges, etc.

●

The vehicle is driven on a slope.

●

The vehicle is driven on a road which tilts left or right, or a winding road.

●

The vehicle is driven on an unpaved or rough road.

●

The vehicle is driven around a sharp curve.

●

The traffic lane is excessively narrow or wide.

●

The vehicle is extremely tilted due to carrying heavy luggage or having improper tire

pressure.

●

The distance to the preceding vehicle is extremely short.

●

The vehicle is moving up and down a large amount due to road conditions during driv-

ing (poor roads or road seams).

●

The headlight lenses are dirty and emit a faint amount of light at night, or the beam axis

has deviated.

●

The vehicle has just changed lanes or crossed an intersection.

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4-5. Using the driving support systems

iving

■

Warning message
If the following warning message is displayed on the multi-information display and the

LDA indicator turns off, follow the appropriate troubleshooting procedure.

If a different warning message is displayed, follow the instructions displayed on the

screen.

Warning message

Details/Actions

“Lane Departure

Alert

Malfunction

Visit Your Dealer”

The system may not be operating properly.

 Have the vehicle inspected at your Lexus

dealer.

“Forward Camera

System

Unavailable

Clean Windshield”

Dirt, rain, condensation, ice, snow, etc. are

present on the windshield in front of the cam-

era sensor.

 Turn the LDA system off, remove any dirt,

rain, condensation, ice, snow, etc. from the

windshield, and then turn the LDA system

back on.

“Forward Camera

System

Unavailable”

The operation conditions of the camera sen-

sor (temperature, etc.) are not met.

 When the operation conditions of the cam-

era sensor (temperature, etc.) are met, the

LDA system will become available. Turn

the LDA system off, wait for a little while,

and then turn the LDA system back on.

“Lane Departure Alert Unavailable”

The LDA system is temporarily canceled due

to a malfunction in a sensor other than the

camera sensor.

 Turn the LDA system off and follow the

appropriate troubleshooting procedures

for the warning message. Afterward, drive

the vehicle for a short time, and then turn

the LDA system back on.

“Lane Departure

Alert

Unavailable

Below Approx

32 mph”

The LDA system cannot be used as the vehicle

speed is less than approximately 32 mph

(50 km/h).

 Drive the vehicle at approximately 32 mph

(50 km/h) or more.

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4-5. Using the driving support systems

■

Customization
The following settings can be changed.

For how to change settings, refer to P. 584.

Function

Setting details

Lane departure alert function

Adjust alert sensitivity

Adjust alert type

Vehicle sway warning function

Turn function on and off

Adjust alert sensitivity

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4-5. Using the driving support systems

iving

Dynamic radar cruise control

with full-speed

range



In vehicle-to-vehicle distance control mode, the vehicle automatically acceler-
ates, decelerates and stops to match the speed changes of the preceding vehicle
even if the accelerator pedal is not depressed. In constant speed control mode,
the vehicle runs at a fixed speed.
Use the dynamic radar cruise control with full-speed range on freeways and
highways.

●

Vehicle-to-vehicle distance control mode (

P. 278)

●

Constant speed control mode (

P. 283)

Indicators
Display
Set speed
Vehicle-to-vehicle distance switch
Cruise control switch



: If equipped

Summary of functions

2
3
4
5

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4-5. Using the driving support systems

WARNING

■

Before using dynamic radar cruise control with full-speed range

●

Driving safely is the sole responsibility of the driver. Do not rely solely on the system,

and drive safely by always paying careful attention to your surroundings.

●

The dynamic radar cruise control with full-speed range provides driving assistance to

reduce the driver’s burden. However, there are limitations to the assistance provided.

Read the following conditions carefully. Do not overly rely on this system and always

drive carefully.
• When the sensor may not be correctly detecting the vehicle ahead:

P. 285

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

function correctly:

P. 286

●

Set the speed appropriately depending on the speed limit, traffic flow, road condi-

tions, weather conditions, etc.

●

Even when the system is functioning normally, the condition of the preceding vehicle

as detected by the system may differ from the condition observed by the driver.

Therefore, the driver must always remain alert, assess the danger of each situation

and drive safely. Relying on this system or assuming the system ensures safety while

driving can lead to an accident, resulting in death or serious injury.

●

Switch the dynamic radar cruise control with full-speed range off using the “ON/

OFF” button when not in use.

■

Cautions regarding the driving assist systems
Observe the following precautions, as there are limitations to the assistance provided

by the system.

Failure to do so may cause an accident resulting in death or serious injury.

●

Assisting the driver to measure following distance

The dynamic radar cruise control with full-speed range is only intended to help the

driver in determining the following distance between the driver’s own vehicle and a

designated vehicle traveling ahead. It is not a mechanism that allows careless or inat-

tentive driving, and it is not a system that can assist the driver in low-visibility condi-

tions. It is still necessary for driver to pay close attention to the vehicle’s surroundings.

●

Assisting the driver to judge proper following distance

The dynamic radar cruise control with full-speed range determines whether the fol-

lowing distance between the driver’s own vehicle and a designated vehicle traveling

ahead is within a set range. It is not capable of making any other type of judgement.

Therefore, it is absolutely necessary for the driver to remain vigilant and to determine

whether or not there is a possibility of danger in any given situation.

●

Assisting the driver to operate the vehicle

The dynamic radar cruise control with full-speed range has limited capability to pre-

vent or avoid a collision with a vehicle traveling ahead. Therefore, if there is ever any

danger, the driver must take immediate and direct control of the vehicle and act

appropriately in order to ensure the safety of all involved.

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4-5. Using the driving support systems

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WARNING

■

Situations unsuitable for dynamic radar cruise control with full-speed range
Do not use dynamic radar cruise control with full-speed range in any of the following

situations.

Doing so may result in inappropriate speed control and could cause an accident result-

ing in death or serious injury.

●

Roads where there are pedestrians, cyclists, etc.

●

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 downhills, or where there are sudden changes between sharp up and down

gradients

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

●

At entrances to freeways and highways

●

When weather conditions are bad enough that they may prevent the sensors from

detecting correctly (fog, snow, sandstorm, heavy rain, etc.)

●

When there is rain, snow, etc. on the front surface of the radar sensor or camera sen-

sor

●

In traffic conditions that require frequent repeated acceleration and deceleration

●

When your vehicle is towing a trailer or during emergency towing

●

When an approach warning buzzer is heard often

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4-5. Using the driving support systems

This mode employs a radar sensor to detect the presence of vehicles up to
approximately 328 ft. (100 m) ahead, determines the current vehicle-to-vehicle
following distance, and operates to maintain a suitable following distance from
the vehicle ahead.

When driving on downhill slopes, the vehicle-to-vehicle distance may become

shorter.

Example of constant speed cruising
When there are no vehicles ahead

The vehicle travels at the speed set by the driver. The desired vehicle-to-vehicle dis-

tance can also be set by operating the vehicle-to-vehicle distance switch.

Example of deceleration cruising and follow-up cruising
When a preceding vehicle driving slower than the set speed appears

When a vehicle is detected running ahead of you, the system automatically deceler-

ates your vehicle. When a greater reduction in vehicle speed is necessary, the system

applies the brakes (the stop lights will come on at this time). The system will respond to

changes in the speed of the vehicle ahead in order to maintain the vehicle-to-vehicle

distance set by the driver. Approach warning warns you when the system cannot

decelerate sufficiently to prevent your vehicle from closing in on the vehicle ahead.

When the vehicle ahead of you stops, your vehicle will also stop (vehicle is stopped by

system control). After the vehicle ahead starts off, pushing the cruise control lever up

or depressing the accelerator pedal will resume follow-up cruising.

Example of acceleration
When there are no longer any preceding vehicles driving slower than the set
speed

The system accelerates until the set speed is reached. The system then returns to con-

stant speed cruising.

Driving in vehicle-to-vehicle distance control mode

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iving

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

Radar cruise control indicator will come

on and a message will be displayed on

the multi-information display.
Press the button again to deactivate the

cruise control.
If the “ON/OFF” button is pressed and

held for 1.5 seconds or more, the system

turns on in constant speed control

mode. (

P. 283)

Accelerate or decelerate, with
accelerator pedal operation, to the
desired vehicle speed (at or above
approximately 30 mph [50 km/h])
and push the lever down to set the
speed.

Cruise control “SET” indicator will come

on.
The vehicle speed at the moment the

lever is released becomes the set speed.
If the lever is operated while the vehicle speed is below approximately 30 mph (50

km/h) and a preceding vehicle is present, the set speed will be adjusted to approxi-

mately 30 mph (50 km/h).

Setting the vehicle speed (vehicle-to-vehicle distance control mode)

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4-5. Using the driving support systems

To change the set speed, operate the lever until the desired set speed is dis-
played.

Increases the speed

(Except when the vehicle has been

stopped by system control in vehicle-to-

vehicle distance control mode)

Decreases the speed

Fine adjustment: Momentarily move
the lever in the desired direction.
Large adjustment: Hold the lever up or
down to change the speed, and release
when the desired speed is reached.
In the vehicle-to-vehicle distance control mode, the set speed will be increased
or decreased as follows:



For vehicles sold in the U.S.A. and Hawaii

Fine adjustment: By 1 mph (1.6 km/h)

or 1 km/h (0.6 mph)

each time the lever is

operated
Large adjustment: Increases or decreases in 1 mph (1.6 km/h)

or 1 km/h (0.6 mph)

increments for as long as the lever is held



For vehicles sold in Canada, Guam and Puerto Rico

Fine adjustment: By 1 mph (1.6 km/h)

or 1 km/h (0.6 mph)

each time the lever is

operated
Large adjustment: Increases or decreases in 5 mph (8 km/h)

or 5 km/h (3.1 mph)

increments for as long as the lever is held

In the constant speed control mode (

P. 283), the set speed will be increased

or decreased as follows:

Fine adjustment: By 1 mph (1.6 km/h)

or 1 km/h (0.6 mph)

each time the lever is

operated
Large adjustment: The speed will continue to change while the lever is held.

: When the set speed is shown in “MPH”

: When the set speed is shown in “km/h”

Adjusting the set speed

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4-5. Using the driving support systems

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Pressing the switch changes the vehi-
cle-to-vehicle distance as follows:

Long
Medium
Short

The vehicle-to-vehicle distance is set

automatically to long mode when the

engine switch is turned to IGNITION

ON mode.
If a vehicle is running ahead of you, the preceding vehicle mark will also be displayed.

Select a distance from the table below. Note that the distances shown corre-
spond to a vehicle speed of 50 mph (80 km/h). Vehicle-to-vehicle distance
increases/decreases in accordance with vehicle speed. When the vehicle is
stopped by system control, the vehicle stops at a certain vehicle-to-vehicle dis-
tance depending on the situation.

After the vehicle ahead of you starts off,
push the lever up.
Your vehicle will also resume follow-up
cruising if the accelerator pedal is
depressed after the vehicle ahead of
you starts off.

Changing the vehicle-to-vehicle distance (vehicle-to-vehicle distance
control mode)

Preceding
vehicle mark

2
3

Vehicle-to-vehicle distance settings (vehicle-to-vehicle distance con-
trol mode)

Distance options

Vehicle-to-vehicle distance

Long

Approximately 160 ft. (50 m)

Medium

Approximately 130 ft. (40 m)

Short

Approximately 100 ft. (30 m)

Resuming follow-up cruising when the vehicle has been stopped by sys-
tem control (vehicle-to-vehicle distance control mode)

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4-5. Using the driving support systems

Pulling the lever toward you cancels
the speed control.

The speed control is also canceled when

the brake pedal is depressed.
(When the vehicle has been stopped by

system control, depressing the brake

pedal does not cancel the setting.)

Pushing the lever up resumes the
cruise control and returns vehicle
speed to the set speed.

However, when a vehicle ahead is not detected, cruise control does not resume when

the vehicle speed is approximately 25 mph (40 km/h) or less.

When your vehicle is too close to a
vehicle ahead, and sufficient automatic
deceleration via the cruise control is
not possible, the display will flash and
the buzzer will sound to alert the driver.
An example of this would be if another
driver cuts in front of you while you are
following a vehicle. Depress the brake
pedal to ensure an appropriate vehicle-
to-vehicle distance.

■

Warnings may not occur when
In the following instances, warnings may not occur even when the vehicle-to-
vehicle distance is small.

●

When the speed of the preceding vehicle matches or exceeds your vehicle
speed

●

When the preceding vehicle is traveling at an extremely slow speed

●

Immediately after the cruise control speed was set

●

When depressing the accelerator pedal

Canceling and resuming the speed control

Approach warning (vehicle-to-vehicle distance control mode)

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