Lexus NX (2022 year). Manual in english

•

When the silhouette of a pedestrian or bicycle is unclear (such as when they are
wearing a raincoat, long skirt, etc.)

•

When a pedestrian or bicycle is bending forward or squatting

•

When a pedestrian or bicycle is moving at high speed

•

When a pedestrian is pushing a stroller, wheelchair, bicycle or other vehicle

•

When a detectable object blends in with the surrounding area, such as when it is
dim (at dawn or dusk) or dark (at night or in a tunnel)

•

When the vehicle has not been driven for a certain amount of time after the engine
was started

•

While turning left/right or a few seconds after turning left/right

•

While driving around a curve and a few seconds after driving around a curve

•

When turning left/right and an oncoming vehicle is driving in a lane 3 or more lanes
from the vehicle

•

When turning left/right and the direction of the
vehicle differs greatly from the direction traffic
flows in the oncoming lane

•

When turning left/right and approaching a pe-
destrian which was traveling in the same direc-
tion as the vehicle and continues straight

●

In addition to the preceding, in certain situations, such as the following, the emergency
steering assist may not operate properly:

•

When a detectable object is too close to the vehicle

•

When there is insufficient space to perform evasive steering maneuvers or an
obstruction exists in the evasion direction

•

When there is an oncoming vehicle

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Driving suppor

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ystem

Changing the pre-collision setting

●

The pre-collision system can be enabled/disabled through a customize set-
ting.

→

P.660

The system is enabled each time the engine switch is turned to ON.

●

When the system is disabled, the PCS warning light will illuminate and a mes-
sage will be displayed on the multi-information display.

●

The pre-collision settings can be changed on the customize settings.

→

P.660

●

When the pre-collision warning timing is changed, the emergency steering
assist (excluding the active steering function) timing will also be changed. When
[Later] is selected, the emergency steering assist (excluding the active steering
function) will not operate in most cases.
When the dynamic radar cruise control is operating, the pre-collision warning
will operate at the [Earlier] timing, regardless of the user setting.

6-2. Using the safe driving support functions

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Lane Tracing Assist

LTA (Lane Tracing Assist)

LTA functions

●

When driving on a road with clear lane lines
with the dynamic radar cruise control operat-
ing, lane lines and preceding and surrounding
vehicles are detected using the front camera
and radar sensor, and the steering wheel is op-
erated to maintain the vehicle’s lane position.

Use the this function only on highways and ex-
pressways.
If the dynamic radar cruise control is not operating,
the function will not operate.
In situations where the lane lines are difficult to see
or are not visible, such as when in a traffic jam, sup-
port will be provided using the path of preceding
and surrounding vehicles.
If the system determines that the steering wheel has not been operated for a certain
amount of time or the steering wheel is not being firmly gripped, the driver will be
alerted via a display and this function will be temporarily canceled.
If the steering wheel is firmly gripped, the function will begin operating again.

●

When the function is operating, if the vehicle is
likely to depart from its lane, the driver will be
alerted via a display and buzzer.

When the buzzer sounds, check the area around
the vehicle and carefully operate the steering
wheel to move the vehicle back to the center of
the lane.

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ystem

WARNING

■

Before using the LTA system

●

Do not overly rely on the LTA system. The LTA system is a system which provides
automated assistance in driving. However, as it is not a system which reduces the
amount of attention necessary for safe driving. The driver is solely responsible for
paying attention to their surroundings and operating the steering wheel as necessary
to ensure safety. Also, the driver is responsible for taking adequate breaks when
fatigued, such as when driving for a long time.
Failure to perform appropriate driving operations and pay careful attention may lead
to an accident.

●

When not using the LTA system, turn it off using the LTA switch.

INFORMATION

■

Operating conditions of function

●

This function is operable when all of the following conditions are met:

•

The LTA system detects lane lines or the path of preceding or surrounding vehicles
(except when the preceding vehicle is small, such as a motorcycle).

•

The dynamic radar cruise control is operating.

•

The lane width is approximately 3 to 4 m (10 to 13 ft.).

•

The turn signal lever is not being operated.

•

The vehicle is not being driven around a sharp curve.

•

The vehicle is not accelerating or decelerating more than a certain amount.

•

The steering wheel is not being turned with a large force.

•

The hands off steering wheel warning

(

→

P.349)

is not operating.

•

The vehicle is being driven in the center of a lane.

■

Temporary cancelation of functions

●

When the operating conditions are no longer met, a function may be temporarily
canceled. However, when the operation conditions are met again, operation of the
function will automatically be restored.

(

→

P.348)

●

If the operating conditions of a function are no longer met while the function is
operating, a buzzer may sound to indicate that the function has been temporarily
canceled.

●

The steering assist operation of the function can be overridden by the steering wheel
operation of the driver.

6-2. Using the safe driving support functions

348

■

Lane departure warning function when the LTA is operating

●

Even if the LDA warning method is changed to vibration of the steering wheel, if the
vehicle deviates from the lane while the LTA is operating, the warning buzzer will
sound to alert the driver.

●

If steering wheel operation equivalent to that necessary for a lane change is detected,
the system will determine the vehicle is not deviating from the lane and the warning will
not operate.

■

Hands off steering wheel warning operation

In the following situations, a message urging the driv-
er to grip the steering wheel and the icon shown in
the illustration will be displayed on the multi-informa-
tion display to warn the driver. If the system detects
that the steering wheel is held, the warning will be
canceled. When using the system, make sure to grip
the steering wheel firmly, regardless of whether the
warning is operating or not.

●

When the system determines the driver is not holding the steering wheel while the
function is operating
If no operations are detected for a certain amount of time, a buzzer will sound, the
warning will operate, and the function will be temporarily canceled. This warning may
also operate if the driver only operates steering wheel a small amount continuously.

●

Depending on the condition of the vehicle, handle control condition and road surface,
the warning function may not operate.
Vehicles with LCA:In the following situations, the system may not be able to detect
when the driver’s hands are off the steering wheel.

•

When a steering wheel cover is installed

•

When the driver is wearing gloves

•

When foreign matter is attached to the steering wheel

•

When the driver is gripping the wood trim, seam of the leather, spokes, or other
part of the steering wheel that does not have sensors

Vehicles with LCA: In the following situations, the hands off steering wheel warning
may not operate and the LTA function may continue operating even though the
driver’s hands are off the steering wheel:

•

When something other than a hand is contacting the steering wheel

•

When a wide object or arms are held across the steering wheel

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Driving suppor

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ystem

Enabling/disabling the system

The LTA will change between enabled/disabled
each time the LTA switch is pressed.

When the LTA is enabled, the LTA indicator will illumi-
nate.

WARNING

■

Situations in which the functions may not operate properly

In the following situations, the functions may not operate properly and the vehicle may
depart from its lane. Do not overly rely on these functions. The driver is solely responsible
for paying attention to their surroundings and operating the steering wheel as necessary
to ensure safety.

●

When a preceding or surrounding vehicle
changes lanes (Your vehicle may follow the pre-
ceding or surrounding vehicle and also change
lanes)

●

When a preceding or surrounding vehicle is swaying (Your vehicle may sway accord-
ingly and depart from the lane)

●

When a preceding or surrounding vehicle departs from a lane (Your vehicle may
follow the preceding or surrounding vehicle and also depart from the lane)

●

When a preceding or surrounding vehicle is being driven extremely close to the
left/right lane line (Your vehicle may follow the preceding or surrounding vehicle
accordingly and depart from the lane)

▶

Vehicles without a head-up

display

▶

Vehicles with a head-up dis-

play

6-2. Using the safe driving support functions

350

WARNING

●

When there are moving objects or structures in the surrounding area (Depending on
the position of the moving object or structure relative to your vehicle, your vehicle may
sway)

●

When the vehicle is struck by a crosswind or the turbulence of other nearby vehicles

●

Situations in which the sensors may not operate properly:

→

P.321

●

Situations in which the lane may not be detected:

→

P.323

●

When it is necessary to disable the system:

→

P.316

Operation display of steering wheel operation support

The operating state of the LTA system is indicated.

Indicator Lane display Steering icon

Situation

White

Gray

Grey

LTA is on standby

Green

LTA is operating

Orange
Flashing

Green

The vehicle is departing the lane toward the side
which the lane display is flashing

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Driving suppor

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ystem

Lane Change Assist

LCA (Lane Change Assist)

LCA functions

This function is linked to the LTA and provides assistance in performing lane
changes through steering wheel operations when the turn signal lever is held
partway

When not using the LCA system, turn it off using the LCA switch.
Use the this function only on highways and expressways.
The steering assist operation can be overridden by the steering wheel operation of the
driver.
The lane change assist function is not designed to operate when changing lanes at a
junction.

WARNING

■

Before using the LCA system

●

Do not overly rely on the LCA system.
The LCA system is a system which provides automated assistance in driving. However,
as it is not a system which reduces the need for checking an adjacent lane for
other vehicles, approaching vehicles, etc. when changing lanes. The driver is solely
responsible for paying attention to their surroundings and operating the steering
wheel as necessary to ensure safety.
Also, do not use the LCA to change lanes into which a lane change should not be
performed (oncoming lanes, road shoulders, etc.).

●

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

INFORMATION

■

Operating conditions of function

●

This function is operable when all of the following conditions are met:

•

The LTA is operating.

•

The lane change assist function is enabled by a customize setting.

•

The vehicle speed is between approximately 100 and 140 km/h (60 and 85 mph).

•

The system recognizes the current road as a highway or expressway.

* :

If equipped

6-2. Using the safe driving support functions

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•

The system detects a broken white line on the side which the lane change is to be
performed.

•

A vehicle is not detected in the lane toward which the turn signal is operated.

•

The navigation system map data is current.

•

The steering wheel is not being turned with a large force.

•

The hands off steering wheel warning

(

→

P.353)

is not operating.

•

The system has detected a moving object behind the vehicle at least once since the
engine was started.

■

Cancelation of functions

●

If the operating conditions are no longer met while the LCA is operating, a message
may be displayed and buzzer may sound to indicate that the LCA has been can-
celed.

→

P.352

In the following situations, operation of the LCA may be canceled:

●

When the system can no longer detect lane lines

●

When the turn signal lever is operated to the left/right turn position

●

When the LTA system detects operation of the steering wheel, brake pedal or acceler-
ator pedal by the driver

●

When the system determines the driver is not holding the steering wheel while the
function is operating

If the system detects that a vehicle is quickly approaching in the lane toward which the
turn signal is operated, a buzzer will sound, the steering wheel will vibrate, and a message
will be displayed to alert the driver. At the same time the steering wheel may be slightly
operated to help keep the vehicle away from the approaching vehicle.

■

Hands off steering wheel warning operation

●

When the system determines the driver is not holding the steering wheel while LCA is
operating

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ystem

Operating the LCA

If the turn signal lever is held in the lane change position, the lane change direction
will be displayed and the function will operate.

WARNING

■

Situations in which the LCA should not be used

●

When driving on a one lane road

●

When there is no broken white line between the current lane and the lane to be
changed to

Enabling/disabling the system

●

LCA can be enabled/disabled through a customize setting.

→

P.660

Operation display of steering wheel operation support

The operating state of the LCA system is indicated.

LCA display

Steering icon

Condition

Blue arrow and white line

Green

LCA on standby

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LCA display

Steering icon

Condition

Blue arrow and white line

Green

LCA is operating

Grey

Approaching vehicle detected while LCA is
operating

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ystem

Lane Departure Alert

LDA (Lane Departure Alert)

Basic functions

The LDA system warns the driver if the vehicle may deviate from the current lane
or course

, and also can slightly operate the steering wheel to help avoid deviation

from the lane or course

The front camera is used to detect lane lines or a course

■

Lane departure alert function

When the system determines that the vehicle
might depart from its lane or course

, a warning

is displayed on a display, and either a warning
buzzer will sound or the steering wheel will vi-
brate to alert the driver.

Check the area around your vehicle and carefully
operate the steering wheel to move the vehicle back
to the center of the lane or course

Vehicles with BSM: If the system determines that the
vehicle may collide with a vehicle in an adjacent lane,
the lane departure alert will operate even if the turn
signals are operating.

*1 :

Boundary between the asphalt and grass, soil, etc., or structures, such as a curb,

guardrail, etc.

6-2. Using the safe driving support functions

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■

Lane departure prevention function

If the system determines that the vehicle is likely
to depart from its lane or course

, it provides

assistance through steering wheel operations to
help avoid deviation from the lane or course.
If the system determines that the steering wheel
has not been operated for a certain amount of
time or the steering wheel is not being firmly
gripped, a warning message may be displayed
and a warning buzzer may sound to alert the
driver.
Vehicles with BSM: If the system determines that
the vehicle may collide with a vehicle in an adja-
cent lane, the lane departure prevention function
will operate even if the turn signals are operating.

■

Break suggestion function

If the vehicle is swaying, a message will be dis-
played and a warning buzzer will sound to urge
the driver to take a break.

WARNING

■

Before using the LDA system

●

Do not overly rely on the LDA system. The LDA system is a system which provides
automated assistance in driving. However, as it is not a system which reduces the
amount of attention necessary for safe driving. The driver is solely responsible for
paying attention to their surroundings and operating the steering wheel as necessary

6-2. Using the safe driving support functions

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Driving suppor

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ystem

WARNING

to ensure safety. Also, the driver is responsible for taking adequate breaks when
fatigued, such as when driving for a long time.

●

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

INFORMATION

■

Operating conditions of each function

●

Lane departure alert/prevention function
This function is operable when all of the following conditions are met:

•

The vehicle speed is approximately 50 km/h (30 mph) or more.
Operation may be possible when the vehicle speed is approximately 40 km/h (25
mph) or more if vehicles, motorcycles, bicycles, or pedestrians are detected near
the lane.

•

The system recognizes a lane or course

. (When recognized on only one side

the system will operate only for the recognized side.)

•

The lane width is approximately 3 m (9.8 ft.) or more.

•

The turn signal lever is not being operated.
(Vehicles with BSM: Except when a vehicle is detected in the direction that the turn
signal lever is operated.)

•

The vehicle is not being driven around a sharp curve.

•

The vehicle is not accelerating or decelerating more than a certain amount.

•

The steering wheel is not being turned sufficiently to perform a lane change.

●

Break suggestion function
This function is operable when all of the following conditions are met:

•

The vehicle speed is approximately 50 km/h (30 mph) or more.

•

The lane width is approximately 3 m (9.8 ft.) or more.

■

Temporary cancellation of functions

When the operating conditions are no longer met, a function may be temporarily can-
celed. However, when the operation conditions are met again, operation of the function
will automatically be restored.

(

→

P.358)

*2 :

Boundary between the asphalt and grass, soil, etc., or structures, such as a curb,

guardrail, etc.

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■

Operation of the lane departure alert function/lane departure prevention function

●

Depending on the vehicle speed, road conditions, lane departure angle, etc., opera-
tion of the lane departure prevention function may not be felt or the function may not
operate.

●

Depending on the conditions, the warning buzzer may operate even if vibration is
selected through a customize setting.

●

If a course

is not clear or straight, the lane departure alert function or lane departure

prevention function may not operate.

●

The lane departure alert function or lane departure prevention function may not
operate if the system judges that the vehicle is intentionally being steered to avoid a
pedestrian or parked vehicle.

●

Vehicles with BSM: It may not be possible for the system to judge if there is danger of a
collision with a vehicle in an adjacent lane.

●

The steering assist operation of the lane departure prevention function can be overrid-
den by the steering wheel operation of the driver.

■

Hands off steering wheel warning operation

In the following situations, a message urging the driv-
er to operate the steering wheel and an icon will
be displayed and a buzzer will sound to warn the
driver. When using the system, make sure to grip
the steering wheel firmly, regardless of whether the
warning is operating or not.

●

When the system determines that the driver is
not securely holding the steering wheel, or the
steering wheel is not being operated when the steering assist operation of the lane
departure prevention function is operating
The length of time that the warning buzzer operates will become longer as the
frequency of the steering assist operating increases. Even if the system judges that the
steering wheel has been operated, the warning buzzer will sound for a certain amount
of time.

■

Break suggestion function

If the vehicle is swaying, a message will be displayed
and a warning buzzer will sound to urge the driver to
take a break.
Depending on the condition of the vehicle and road
surface, the break suggestion function may not oper-
ate.

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ystem

Displays and system operation

The operating state of the lane departure alert function and steering assist opera-
tion of the lane departure prevention function are indicated.

Indicator

Lane display

Steering icon

Situation

Orange
Illuminated

Not illuminated Not illuminated System disabled

Not illuminated

Gray

Not illuminated

Lane lines are not detected by the
system

Not illuminated

White

Not illuminated Lane lines are detected by the system

Orange
Flashing

Not illuminated

Lane departure alert function is op-
erating for the side which the lane
display is flashing

Green

Lane departure prevention function
is operating for the side which the
lane display is illuminated

Orange
Flashing

Green

Lane departure alert function/lane
departure prevention function is op-
erating for the side which the lane
display is flashing

6-2. Using the safe driving support functions

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Lexus NX (2022 year). Manual in english - page 21