Lexus NX250 (2022 year). Manual in english

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

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.

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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.
If the system determines that the vehicle may
collide with a vehicle in an adjacent 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
to ensure safety. Also, the driver is responsible for taking adequate breaks when
fatigued, such as when driving for a long time.

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WARNING

●

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 30 mph (50 km/h) or more.
Operation may be possible when the vehicle speed is approximately 25 mph (40
km/h) 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 9.8 ft. (3 m) or more.

•

The turn signal lever is not being operated.
(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 30 mph (50 km/h) or more.

•

The lane width is approximately 9.8 ft. (3 m) 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.387)

■

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.

*2 :

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

guardrail, etc.

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●

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.

●

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.

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.

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Indicator

Lane display

Steering icon

Situation

Not illuminated Not illuminated Not illuminated System disabled

White

Gray

Not illuminated

Lane lines are not detected by the
system

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

Changing LDA settings

●

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

→

P.713

●

The following settings of the LDA can be changed through customize set-
tings.

→

P.713

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WARNING

■

Situations in which the LDA should not be used

In the following situations, disable the LDA system. Failure to do so may lead to an
accident.

●

When it is necessary to disable the system:

→

P.349

■

Situations in which the system may not operate properly

In the following situations, the system 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 the boundary between the asphalt and grass, soil, etc., or structures, such as a
curb, guardrail, etc. is not clear or straight

●

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

●

Situations in which the lane may not be detected :

→

P.356

●

Situations in which the sensors may not operate properly:

→

P.354

●

Situations in which some or all of the functions of the system cannot operate:

→

P.356

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Front cross traffic alert

FCTA(Front cross traffic alert)

When approaching an intersection, etc., at a low speed, vehicles approaching from
the left and right of the front of the vehicle can be detected and the driver informed
of these vehicles.

FCTA system control

●

When the system detects a vehicle approach-
ing from the left or right in front of your vehicle
when approaching an intersection, a notifica-
tion will be displayed.

●

When the system determines that your vehicle
may be about to enter an intersection even
though a vehicle is approaching from the left
or right in front of your vehicle, a buzzer will
sound and a message will be displayed to urge
you to depress the brake pedal.

WARNING

■

For safe use

Driving safely is solely the responsibility of the driver. Pay careful attention to the sur-
rounding conditions in order to ensure safe driving. The FCTA system is a supplementary
system that informs the driver of vehicles approaching from the left and right of the
front of the vehicle. Over-reliance on this system may lead to an accident resulting in
death or serious injury. The details of the warning display may differ from the actual
traffic conditions. Although the warning display will stop being displayed after a certain
amount of time, this does not necessarily indicate that there are no longer any vehicles or
pedestrians around your vehicle.

▶

Head-up display

▶

Multi-information display

* :

If equipped

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INFORMATION

■

FCTA system operating conditions

The system will operate when all of the following conditions are met:

●

A shift position other than P or R is selected

●

The vehicle speed is approximately 10 mph (15 km/h) or less

●

A vehicle is approaching from the left or right in front of your vehicle at a speed
between approximately 7 to 37 mph (10 to 60 km/h)

●

There are no vehicles in front of your vehicle

●

The accelerator pedal is not being strongly depressed

●

The brake pedal is not being strongly depressed

■

Situations in which the system may operate even though no vehicles are approach-
ing

In certain situations, such as the following, the system may operate even though no
vehicles are approaching:

●

When approaching objects on the roadside, such as guardrails, traffic signs, utility
poles, street lights, trees, tall grass, walls, etc.

●

When passing an object on the side of the road, such as a parked vehicle

●

When a vehicle or pedestrian is approaching from the left or right in front of your
vehicle in the distance

●

When a vehicle or pedestrian is moving within a parking spot, etc., next to the lane
your vehicle is in

●

When a pedestrian or bicyclist is approaching on a sidewalk

●

When a vehicle or pedestrian is moving away from your vehicle

●

When an approaching vehicle is decelerating or stops

●

When an approaching vehicle makes a left/right turn immediately in front of your
vehicle

●

When a pedestrian is approaching your vehicle

●

When an oncoming vehicle makes a right/left turn

●

When your vehicle enters an intersection before a vehicle approaching from the left or
right in front of your vehicle

●

When stopped at traffic light and a vehicle approaches from the left or right in front of
your vehicle

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●

When making a left/right turn in front of an ap-
proaching vehicle

●

When an oncoming vehicle approaches and pass-
es

●

When being overtaken by another vehicle

●

When driving next to another vehicle or a pedes-
trian

●

When a vehicle or pedestrian approaches the side of your vehicle

■

Situations in which the system may not operate properly

In situations such as the following, a vehicle may not be detected by a front side radar
sensor and the system may not operate properly:

●

If an approaching vehicle moves suddenly (sudden steering, acceleration, decelera-
tion, etc.)

●

If a vehicle is approaching from the left or right of the front of your vehicle diagonally

●

When a vehicle is approaching from the left or right in front of your vehicle in the
distance

●

When there is an object between your vehicle and an approaching vehicle

●

When several vehicles are approaching with little space between them

●

Situations in which the sensors may not operate properly:

→

P.354

●

Situations in which some or all of the functions of the system cannot operate:

→

P.356

Changing FCTA system settings

●

The FCTA can be enabled/disabled through a customize setting.

→

P.712

●

The following settings of the FCTA can be changed through customize set-
tings.

→

P.712

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Assistance in detecting vehicles behind when changing lanes

The Blind Spot Monitor is a system that uses rear side radar sensors installed on
the inner side of the rear bumper on the left and right side to assist the driver in
confirming safety when changing lanes.

WARNING

■

Cautions regarding the use of the system

The driver is solely responsible for safe driving. Always drive safely, taking care to
observe your surroundings.
The Blind Spot Monitor is a supplementary function which alerts the driver that a vehicle
is in a blind spot of the outside rear view mirrors or is approaching rapidly from behind
into a blind spot. Do not overly rely on the Blind Spot Monitor. As the function cannot
judge if it is safe to change lanes, over reliance could lead to an accident resulting in
death or serious injury.
As the system may not function correctly under certain conditions, the driver’s own visual
confirmation of safety is necessary.

Related Links

Customizable features(P. 703)

Purpose of the Blind Spot Monitor

INFORMATION

■

Conditions under which the system will not detect a vehicle

The Blind Spot Monitor is not designed to detect the following types of vehicles and/or
objects:

●

Small motorcycles, bicycles, pedestrians, etc.

●

Vehicles traveling in the opposite direction

●

Guardrails, walls, signs, parked vehicles and similar stationary objects

●

Following vehicles that are in the same lane

●

Vehicles traveling 2 lanes away from your vehicle

●

Vehicles which are being overtaken rapidly by your vehicle

*1 :

Depending on the conditions, detection of a vehicle and/or object may occur.

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System components

Center display
Turning the Blind Spot Monitor on/off.

Outside rear view mirror indicators
When a vehicle is detected in a blind spot of
the outside rear view mirrors or approach-
ing rapidly from behind into a blind spot,
the outside rear view mirror indicator on
the detected side will illuminate. If the turn
signal lever is operated toward the detected
side, the outside rear view mirror indicator
flashes.

INFORMATION

■

Outside rear view mirror indicator visibility

In strong sunlight, the outside rear view mirror indicator may be difficult to see.

WARNING

■

To ensure the system can operate properly

Blind Spot Monitor sensors are installed behind the left and right sides of the rear bumper
respectively. Observe the following to ensure the Blind Spot Monitor can operate
correctly.

●

Keep the sensors and the surrounding areas on
the rear bumper clean at all times.
If a sensor or its surrounding area on the rear
bumper is dirty or covered with snow, the Blind
Spot Monitor may not operate and a warning
message will be displayed. In this situation, clear
off the dirt or snow and drive the vehicle with the
operation conditions of the BSM function satisfied
for approximately 10 minutes. If the warning message does not disappear, have the
vehicle inspected by your Lexus dealer.

●

Do not attach accessories, stickers (including transparent stickers), aluminum tape,
etc., to a sensor or its surrounding area on the rear bumper.

●

Do not subject a sensor or its surrounding area on the rear bumper to a strong impact.
If a sensor is moved even slightly off position, the system may malfunction and vehicles
may not be detected correctly. In the following situations, have your vehicle inspected
by your Lexus dealer.

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WARNING

•

A sensor or its surrounding area is subject to a strong impact.

•

If the surrounding area of a sensor is scratched or dented, or part of them has
become disconnected.

●

Do not disassemble the sensor.

●

Do not modify the sensor or surrounding area on the rear bumper.

●

If a sensor or the rear bumper needs to be removed/installed or replaced, contact
your Lexus dealer.

●

Do not paint the rear bumper any color other than an official Lexus color.

Vehicles that can be detected by the Blind Spot Monitor

The Blind Spot Monitor uses rear side radar sensors to detect the following
vehicles traveling in adjacent lanes and advises the driver of the presence of such
vehicles via the indicators on the outside rear view mirrors.

Vehicles that are traveling in areas that are not visible using the outside rear
view mirrors (the blind spots)

Vehicles that are approaching rapidly from behind in areas that are not visible
using the outside rear view mirrors (the blind spots)

The Blind Spot Monitor detection areas

The areas that vehicles can be detected in are outlined below.

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The range of each detection area is:

Approximately 1.6 ft. (0.5 m) to 11.5 ft. (3.5 m) from either side of the vehicle

Approximately 3.3 ft. (1 m) forward of the rear bumper

Approximately 9.8 ft. (3 m) from the rear bumper

Approximately 9.8 ft. (3 m) to 197 ft. (60 m) from the rear bumper

Turning the Blind Spot Monitor system ON/OFF

The Blind Spot Monitor system can be changed between ON and OFF on the
center display

Select

Select [Driving assist].

Select [Blind spot monitor].

When the BSM function is disabled, the driving assist infomation indicator illumi-
nates.
Each time the engine switch is turned off then changed to ON, the Blind Spot
Monitor will be enabled automatically.

INFORMATION

■

The Blind Spot Monitor is operational when

The Blind Spot Monitor is operational when all of the following conditions are met:

●

The Blind Spot Monitor is on.

●

The shift position is in a position other than R.

●

The vehicle speed is greater than approximately 7 mph (10 km/h).

■

The Blind Spot Monitor will detect a vehicle when

The Blind Spot Monitor will detect a vehicle present in the detection area in the following
situations:

●

A vehicle in an adjacent lane overtakes your vehicle.

●

You overtake a vehicle in an adjacent lane slowly.

●

Another vehicle enters the detection area when it changes lanes.

■

Conditions under which the system may not function correctly

●

The Blind Spot Monitor may not detect vehicles correctly in the following situations:

*2 :

The area between the side of the vehicle and 1.6 ft. (0.5 m) from the side of the vehicle

cannot be detected.

*3 :

The greater the difference in speed between your vehicle and the detected vehicle

is, the farther away the vehicle will be detected, causing the outside rear view mirror

indicator to illuminate or flash.

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•

When the sensor is misaligned due to a strong impact to the sensor or its surround-
ing area

•

When mud, snow, ice, a sticker, etc., is covering the sensor or surrounding area on
the rear bumper

•

When driving on a road surface that is wet with standing water during bad weather,
such as heavy rain, snow, or fog

•

When multiple vehicles are approaching with only a small gap between each
vehicle

•

When the distance between your vehicle and a following vehicle is short

•

When there is a significant difference in speed between your vehicle and the
vehicle that enters the detection area

•

When the difference in speed between your vehicle and another vehicle is chang-
ing

•

When a vehicle enters a detection area traveling at about the same speed as your
vehicle

•

As your vehicle starts from a stop, a vehicle remains in the detection area

•

When driving up and down consecutive steep inclines, such as hills, dips in the road,
etc.

•

When driving on roads with sharp bends, consecutive curves, or uneven surfaces

•

When vehicle lanes are wide, or when driving on the edge of a lane, and the vehicle
in an adjacent lane is far away from your vehicle

•

When an accessory (such as a bicycle carrier) is installed to the rear of the vehicle

•

When there is a significant difference in height between your vehicle and the
vehicle that enters the detection area

•

Immediately after the Blind Spot Monitor is turned on

●

Instances of the Blind Spot Monitor unnecessarily detecting a vehicle and/or object
may increase in the following situations:

•

When the sensor is misaligned due to a strong impact to the sensor or its surround-
ing area

•

When the distance between your vehicle and a guardrail, wall, etc., that enters the
detection area is short

•

When driving up and down consecutive steep inclines, such as hills, dips in the road,
etc.

•

When vehicle lanes are narrow, or when driving on the edge of a lane, and a vehicle
traveling in a lane other than the adjacent lanes enters the detection area

•

When driving on roads with sharp bends, consecutive curves, or uneven surfaces

•

When the tires are slipping or spinning

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Lexus NX250 (2022 year). Manual in english - page 23