Lexus NX250 (2022 year). Manual in english

WARNING

■

Emergency steering assist

●

The emergency steering assist will be canceled when the system determines that lane
departure prevention control has completed.

●

Depending on operations performed by the driver, emergency steering assist may not
operate or operation may be canceled.

•

If the accelerator pedal is depressed strongly, the steering wheel is turned heavily,
the brake pedal is depressed, or the turn signal lever is operated, the system may
determine that the driver is taking evasive action and the emergency steering assist
may not operate.

•

While the emergency steering assist is operating, if the accelerator pedal is
depressed strongly, the steering wheel is turned heavily, or the brake pedal is
depressed, the system may determine that the driver is taking evasive action and
emergency steering assist operation may be canceled.

•

While the emergency steering assist is operating, if the steering wheel is held or
turned in the opposite direction of system operation, emergency steering assist
operation will be canceled.

INFORMATION

■

Operating conditions of each function of the pre-collision system

The pre-collision system is enabled and the system determines that the possibility of a
frontal collision with a detected object is high.
However, the system will not operate in the following situations:

●

When the vehicle has not been driven a certain amount after a terminal of the battery
has been disconnected and reconnected

●

When the shift position is in R

●

When the VSC OFF indicator is illuminated (only the pre-collision warning function
will be operational)

The following are the operational speeds and cancelation conditions of each function:

●

Pre-collision warning

Detectable ob-

jects

Vehicle speed

Relative speed between your

vehicle and object

Preceding vehi-
cles, stopped ve-
hicles

Approximately 3 to 110 mph
(5 to 180 km/h)

Approximately 3 to 110 mph (5
to 180 km/h)

Oncoming vehi-
cles

Approximately 20 to 110 mph
(30 to 180 km/h)

Approximately 50 to 130 mph
(80 to 220 km/h)

6-2. Using the safe driving support functions

368

Detectable ob-

jects

Vehicle speed

Relative speed between your

vehicle and object

Bicycles

Approximately 3 to 50 mph
(5 to 80 km/h)

Approximately 3 to 50 mph (5
to 80 km/h)

Pedestrians

Approximately 3 to 50 mph
(5 to 80 km/h)

Approximately 3 to 50 mph (5
to 80 km/h)

Preceding motor-
cycles, stopped
motorcycles

Approximately 3 to 110 mph
(5 to 180 km/h)

Approximately 3 to 50 mph (5
to 80 km/h)

Oncoming motor-
cycles

Approximately 20 to 110 mph
(30 to 180 km/h)

While the pre-collision warning is operating, if the steering wheel is operated heavily
or suddenly, the pre-collision warning may be cancelled.

●

Pre-collision brake assist

Detectable objects

Vehicle speed

Relative speed between your

vehicle and object

Preceding vehi-
cles, stopped vehi-
cles

Approximately 20 to 110
mph (30 to 180 km/h)

Approximately 7 to 110 mph (10
to 180 km/h)

Bicycles

Approximately 20 to 50
mph (30 to 80 km/h)

Approximately 20 to 50 mph
(30 to 80 km/h)

Pedestrians

Approximately 20 to 50
mph (30 to 80 km/h)

Approximately 20 to 50 mph
(30 to 80 km/h)

Preceding motor-
cycles, stopped
motorcycles

Approximately 20 to 110
mph (30 to 180 km/h)

Approximately 7 to 50 mph (10
to 80 km/h)

●

Pre-collision braking

Detectable ob-

jects

Vehicle speed

Relative speed between your

vehicle and object

Preceding vehi-
cles, stopped ve-
hicles

Approximately 3 to 110 mph
(5 to 180 km/h)

Approximately 3 to 110 mph (5
to 180 km/h)

Oncoming vehi-
cles

Approximately 20 to 110 mph
(30 to 180 km/h)

Approximately 50 to 130 mph
(80 to 220 km/h)

6-2. Using the safe driving support functions

369

Driving suppor

t s

ystem

Detectable ob-

jects

Vehicle speed

Relative speed between your

vehicle and object

Bicycles

Approximately 3 to 50 mph
(5 to 80 km/h)

Approximately 3 to 50 mph (5
to 80 km/h)

Pedestrians

Approximately 3 to 50 mph
(5 to 80 km/h)

Approximately 3 to 50 mph (5
to 80 km/h)

Preceding motor-
cycles, stopped
motorcycles

Approximately 3 to 110 mph
(5 to 180 km/h)

Approximately 3 to 50 mph (5
to 80 km/h)

Oncoming motor-
cycles

Approximately 20 to 110 mph
(30 to 180 km/h)

If either of the following occur while the pre-collision braking function is operating, it
will be canceled:

•

The accelerator pedal is strongly depressed

•

The steering wheel is operated heavily or suddenly

●

Emergency steering assist
The emergency steering assist will not operate when the turn signal lights are flashing.

Detectable objects

Vehicle speed

Relative speed between your

vehicle and object

Preceding vehicles,
stopped vehicles, bicy-
cles, pedestrians, mo-
torcycles

Approximately 25 to 50
mph (40 to 80 km/h)
Active steering function: *
to 50 mph (* to 80 km/h)

Approximately 25 to 50 mph
(40 to 80 km/h)
Active steering function: * to
50 mph (* to 80 km/h)

*Minimum vehicle speed: Vehicle speed at which evasion using pre-collision brake
control is difficult

While the emergency steering assist is operating, if any of the following are performed,
emergency steering assist operation may be cancelled:

•

The accelerator pedal is strongly depressed

•

The steering wheel is operated heavily or suddenly

•

The brake pedal is depressed

●

Intersection collision avoidance support (left/right turn)
The intersection collision avoidance support (for left/right turning vehicles) will not
operate when the turn signal lights are not flashing.

6-2. Using the safe driving support functions

370

Detectable

objects

Vehicle speed

Oncoming vehi-

cle speed

Relative speed between

your vehicle and object

Oncoming
vehicles

Approximately 3 to 25
mph (5 to 40 km/h)

Approximately
3 to 45 mph (5
to 75 km/h)

Approximately 7 to 70
mph (10 to 115 km/h)

Pedestrians

Approximately 3 to 20
mph (5 to 30 km/h)

Approximately 3 to 25
mph (5 to 40 km/h)

Bicycles

Approximately 3 to 20
mph (5 to 30 km/h

Approximately 3 to 30
mph (5 to 50 km/h)

Oncoming
motorcycles

Approximately 3 to 25
mph (5 to 40 km/h)

Approximately
3 to 45 mph (5
to 75 km/h)

Approximately 7 to 70
mph (10 to 115 km/h)

●

Intersection collision avoidance support (crossing vehicles)

Detecta-

ble objects

Vehicle speed

Crossing vehicle speed

Relative speed be-

tween your vehicle

and object

Vehicles
(side)

Approximately 3
to 38 mph (5 to
60 km/h)

●

Your vehicle speed or
less

●

Approximately 25 mph
or less (40 km/h or less)

Approximately 3 to
38 mph (5 to 60
km/h)

Motorcy-
cles (side)

Approximately 3
to 38 mph (5 to
60 km/h)

●

Your vehicle speed or
less

●

Approximately 25 mph
or less (40 km/h or less)

Approximately 3 to
38 mph (5 to 60
km/h)

●

Acceleration Suppression at Low Speed
The Acceleration Suppression at Low Speed function will not operate when the turn
signal lights are flashing.

Detectable ob-

jects

Vehicle speed

Relative speed between your ve-

hicle and object

Preceding vehi-
cles, stopped ve-
hicles

Approximately 0 to 9 mph (0
to 15 km/h)

Approximately 0 to 9 mph (0 to
15 km/h)

Bicycles

Approximately 0 to 9 mph (0
to 15 km/h)

Approximately 0 to 9 mph (0 to
15 km/h)

6-2. Using the safe driving support functions

371

Driving suppor

t s

ystem

Detectable ob-

jects

Vehicle speed

Relative speed between your ve-

hicle and object

Pedestrians

Approximately 0 to 9 mph (0
to 15 km/h)

Approximately 0 to 9 mph (0 to
15 km/h)

While the Acceleration Suppression at Low Speed function is operating, if any of
the following are performed, the low speed sudden acceleration suppression function
operation will be cancelled:

•

The accelerator pedal is released.

•

The steering wheel is operated heavily or suddenly

■

Detection of detectable objects

Objects are detected based on their size, shape, and
movement. Depending on the ambient brightness,
movement, posture and direction of a detectable ob-
ject, it may not be detected and the system may not
operate properly. The system detects shapes, such as
the following, as detectable objects.

■

Situations in which the system may operate even though the possibility of a collision
is not high

●

In certain situations, such as the following, the system may determine that the possibili-
ty of a collision is high and operate:

•

When passing a detectable object

•

When changing lanes while overtaking a detectable object

•

When suddenly approaching a detectable object

•

When approaching a detectable object or other object on the roadside, such as
guardrails, utility poles, trees, walls, etc.

•

When there is a detectable object or other ob-
ject by the roadside at the entrance of a curve

•

When there are patterns or a painting ahead of the vehicle that may be mistaken for
a detectable object

6-2. Using the safe driving support functions

372

•

When passing a detectable object that is
changing lanes or turning left/right

•

When passing a detectable object which is
stopped to make a left/right turn

•

When a detectable object stops immediately before entering the path of the vehicle

•

When passing through a location with a struc-
ture above the road (traffic sign, billboard, etc.)

•

When approaching an electric toll gate barrier, parking lot barrier, or other barrier
that opens and closes

•

When turning left/right and an oncoming vehicle or pedestrian crosses in front of
the vehicle

•

When attempting to turn left/right in front of an oncoming vehicle or pedestrian

•

When turning left/right and an oncoming vehicle or pedestrian stops immediately
before entering the path of the vehicle

•

When turning left/right and an oncoming vehi-
cle turns left/right in front of the vehicle

•

When the steering wheel is operated toward the path of an oncoming vehicle

6-2. Using the safe driving support functions

373

Driving suppor

t s

ystem

■

Situations in which the system may not operate properly

●

In certain situations, such as the following, a detectable object may not be detected by
the front sensors, and the system may not operate properly:

•

When a detectable object is approaching your vehicle

•

When your vehicle or a detectable object is wandering

•

When a detectable object makes an abrupt maneuver (such as sudden swerving,
acceleration or deceleration)

•

When suddenly approaching a detectable object

•

When the detectable object is near a wall, fence, guardrail, manhole cover, steel
plate on the road surface, or another vehicle

•

When there is a structure above a detectable object

•

When part of a detectable object is hidden by another object (large luggage,
umbrella, guardrail, etc.)

•

When multiple detectable objects are overlapping

•

When a bright light, such as the sun, is reflecting off of a detectable object

•

When a detectable object is white and looks extremely bright

•

When the color or brightness of a detectable object causes it to blend in with its
surroundings

•

When a detectable object cuts in front of or suddenly emerges in front of your
vehicle

•

When approaching a vehicle which is diagonal

•

If a vehicle ahead is a child sized bicycle, is carrying a large load, is carrying an extra
passenger, or has an unusual shape (bicycles equipped with a child seat, tandem
bicycles, etc.)

•

If a pedestrian or bicycle is shorter than approximately 3.2 ft. (1 m) or taller than
approximately 6.5 ft. (2 m).

•

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

6-2. Using the safe driving support functions

374

•

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

Changing the pre-collision setting

●

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

→

P.713

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.713

●

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

375

Driving suppor

t s

ystem

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.

6-2. Using the safe driving support functions

376

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 10 to 13 ft. (3 to 4 m).

•

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.378)

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.377)

●

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

377

Driving suppor

t s

ystem

■

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

6-2. Using the safe driving support functions

378

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

379

Driving suppor

t s

ystem

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.354

●

Situations in which the lane may not be detected:

→

P.356

●

When it is necessary to disable the system:

→

P.349

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

6-2. Using the safe driving support functions

380

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 55 and 85 mph (90 and 140 km/h).

•

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

* :

If equipped

6-2. Using the safe driving support functions

381

Driving suppor

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ystem

•

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

•

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

•

The hands off steering wheel warning

(

→

P.382)

is not operating.

■

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.381

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

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.

6-2. Using the safe driving support functions

382

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.713

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 is operating

6-2. Using the safe driving support functions

383

Driving suppor

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ystem

Lexus NX250 (2022 year). Manual in english - page 22