Lexus NX250 (2022 year). Manual in english

Buzzer and screen notifications when traveling at a low speed and an
approaching vehicle is detected at the rear

Purpose of the RCTA (Rear cross traffic alert) function

The RCTA function uses the BSM rear side radar sensors installed behind the rear
bumper. This function is intended to assist the driver in checking areas that are not
easily visible when backing up.

WARNING

■

Cautions regarding the use of the system

There is a limit to the degree of recognition accuracy and control performance that this
system can provide, do not overly rely on this system. The driver is always responsible for
paying attention to the vehicle’s surroundings and driving safely.

INFORMATION

■

The RCTA function is operational when

The RCTA function operates when all of the following conditions are met:

●

The engine switch is in ON.

●

The shift position is in R.

●

The vehicle speed is approximately 9 mph (15 km/h) or less.

●

The approaching vehicle speed is between approximately 5 mph (8 km/h) and 35
mph (56 km/h).

■

Conditions under which the system will not detect a vehicle

The RCTA function is not designed to detect the following types of vehicles and/or
objects:

●

Vehicles approaching from directly behind

●

Vehicles backing up in a parking space next to your vehicle

●

Vehicles that the sensors cannot detect due to
obstructions

●

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

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●

Small motorcycles, bicycles, pedestrians, etc.

●

Vehicles moving away from your vehicle

●

Vehicles approaching from the parking spaces next to your vehicle

●

The distance between the sensor and approaching vehicle gets too close

■

Situations in which the system may not operate properly

The RCTA function may not detect vehicles correctly in the following situations:

●

When the sensor is misaligned due to a strong impact to the sensor or its surrounding
area

●

When mud, snow, ice, a sticker, etc.,is covering the sensor or surrounding area on the
position above 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 a vehicle is approaching at high speed

●

When equipment that may obstruct a sensor is installed, such as a towing eyelet,
bumper protector (an additional trim strip, etc.), bicycle carrier, or snow plow

●

When backing up on a slope with a sharp change
in grade

●

When backing out of a sharp angle parking spot

*1 :

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

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●

When towing a trailer

●

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

●

When a sensor or the area around a sensor is extremely hot or cold.

●

If the suspension has been modified or tires of a size other than specified are installed

●

If the front of the vehicle is raised or lowered due to the carried load

●

When turning while backing up

●

When a vehicle turns into the detection area

■

Situations in which the system may operate even if there is no possibility of a
collision

Instances of the RCTA function unnecessary detecting a vehicle and/or object may
increase in the following situations:

●

When the parking space faces a street and vehi-
cles are being driven on the street

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●

When the distance between your vehicle and met-
al objects, such as a guardrail, wall, sigh, or parked
vehicle, which may reflect electrical waves toward
the rear of the vehicle, is short

●

When equipment that may obstruct a sensor is installed, such as a towing eyelet,
bumper protector (an additional trim strip, etc.), bicycle carrier, or snow plow

●

When a vehicle passes by the side of your vehicle

●

When a detected vehicle turns while approaching
the vehicle

●

When there are spinning objects near your vehicle such as the fan of an air condition-
ing unit

●

When water is splashed or sprayed toward the rear bumper, such as from a sprinkler

●

Moving objects (flags, exhaust fumes, large rain droplets or snowflakes, rain water on
the road surface, etc.)

●

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

●

Gratings and gutters

●

When a sensor or the area around a sensor is extremely hot or cold.

●

If the suspension has been modified or tires of a size other than specified are installed

●

If the front of the vehicle is raised or lowered due to the carried load

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System components

Meter
If a vehicle approaching from the right or
left at the rear of the vehicle is detected, a
buzzer will sound.

Outside rear view mirror indicators
When a vehicle approaching from the right
or left at the rear of the vehicle is detected,
both outside rear view mirror indicators will
flash.

Center display
If a vehicle approaching from the right or
left at the rear of the vehicle is detected,
the RCTA icon for the detected side will be
displayed on the center display. Turning the
RCTA function on/off on the center display.

This illustration shows an example of a vehicle
approaching from both sides of the vehicle.

INFORMATION

■

Outside rear view mirror indicator visibility

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

■

Hearing the RCTA buzzer

The RCTA buzzer may be difficult to hear over loud noises, such as if the audio system
volume is high.

■

Rear side radar sensors

→

P.395

RCTA function

The RCTA function is operational when

The RCTA function uses rear side radar sensors to detect vehicles approaching
from the right or left at the rear of the vehicle and alerts the driver of the presence
of such vehicles by flashing the outside rear view mirror indicators and sounding a
buzzer.

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Approaching vehicles

Detection areas of approaching vehicles

RCTA icon display

When a vehicle approaching from the right or left at the rear of the vehicle is
detected, the following will be displayed on the center display.
Example: Vehicles are approaching from both
sides of the vehicle (Example: Vehicles with a
Lexus parking assist monitor)

RCTA function detection areas

The areas that vehicles can be detected in are outlined below.
The buzzer can alert the driver of faster vehicles
approaching from farther away.
Example:

●

Approaching vehicle speed: 35 mph (56 km/h) (fast)

Approximate alert distance: 82 ft. (25 m)

●

Approaching vehicle speed: 5 mph (8 km/h) (slow)

Approximate alert distance: 18 ft. (5.5 m)

Changing the RCTA settings

Turning the RCTA function ON/OFF

The RCTA function can be enabled/disabled on the center display as follows:

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Select

Select [Driving assist].

Select [Rear cross traffic alert].

When the RCTA function is disabled, the driving assist infomation indicator illumi-
nates on the multi-information display.
(Each time the engine switch is turned off then changed to ON, the RCTA function
will be enabled automatically.)

Changing the RCTA buzzer volume

The buzzer volume can be adjusted on the center display.

Select

Select [Driving assist].

Select [Collision mitigation].

Select [Parking assist volume].

Temporarily muting the RCTA buzzer

A mute button will be displayed on the center display when an object is detected.
To mute the buzzer, select

.To mute the buzzer, select

. The buzzers for the

intuitive parking assist sensor, RCTA and RCD function will be muted simultane-
ously.

INFORMATION

Mute will be canceled automatically in the following situations:

●

When the shift position is changed.

●

When the vehicle speed exceeds a certain speed.

●

When there is a malfunction in a sensor or the system is temporarily unavailable.

●

When the operating function is disabled manually.

●

When the engine switch is turned off.

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Buzzer and screen notifications when traveling at a low speed and a
pedestrian is detected at the rear

Purpose of the RCD (Rear Camera Detection)

When the vehicle is backing up, the rear camera detection function can detect
pedestrians in the detection area behind the vehicle. If a pedestrian is detected, a
buzzer will sound and an icon will be displayed on the center display to inform the
driver of the pedestrian.

WARNING

■

Cautions regarding the use of the system

The recognition and control capabilities for this system are limited.
The driver should always drive safely by always being responsible without over relying on
the system and have a understanding of the surrounding situations.

■

To ensure the system can operate properly

Observe the following, otherwise there is the danger that could lead to an accident.

●

Always clean the camera with damaging it.

●

Do not install market electronic parts (such as Illuminated license plate, fog lamps,
etc.) in the camera vicinity.

●

Do not subject the camera vicinity to strong impacts. If the vicinity is subjected to a
strong impact, have the vehicle inspected by your Lexus dealer.

●

Do not disassemble, remodel or paint the camera.

●

Do not attach accessories or stickers to the camera.

●

Do not install market protection parts (bumper trim, etc.) to the rear bumper.

●

Maintain suitable tire air pressure.

●

Make sure the back door is completely closed.

■

RCD function is turned off

In the following situations the system turns off. The RCD function may not operate
properly and thus there is the danger that an accident may occur.

●

The contents mentioned above are not observed.

●

Suspensions other than Lexus genuine parts are installed.

* :

If equipped

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INFORMATION

■

The rear camera detection function is operational when

●

The engine switch is in ON.

●

RCD function is on.

●

The shift position is in R.

■

Situations in which the system may not operate properly

●

Some pedestrians, such as the following, may not be detected by the rear camera
detection function, preventing the function from operating properly:

•

Pedestrians who are bending forward or squatting

•

Pedestrians who are lying down

•

Pedestrians who are running

•

Pedestrians who suddenly enter the detection area

•

People riding a bicycle, skateboard, or other light vehicle

•

Pedestrians wearing oversized clothing such as a rain coat, long skirt, etc., making
their silhouette obscure

•

Pedestrians whose body is partially hidden by an object, such as a cart or umbrella

•

Pedestrians which are obscured by darkness, such as at night

●

In some situations, such as the following, pedestrians may not be detected by the rear
camera detection function, preventing the function from operating properly:

•

When backing up in inclement weather (rain, snow, fog, etc.)

•

When the rear camera is obscured (dirt, snow, ice, etc. are attached) or scratched

•

When a very bright light, such as the sun, or the headlights of another vehicle,
shines directly into the rear camera

•

When backing up in a place where the surrounding brightness changes suddenly,
such as at the entrance or exit of a garage or underground parking lot

•

When backing up in a dim environment such as during dusk or in an underground
parking lot

•

When the camera position and direction are deviated

•

When a towing hook is attached

•

When water droplets are flowing on the camera lens

•

When the rear washer is operating

•

When the vehicle height is extremely changed (nose up, nose down)

•

When tire chains or an emergency tire puncture repair kit is used

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•

If the suspension has been modified or tires of a size other than specified are
installed

•

When install market electronic parts (such as Illuminated license plate, fog lamps,
etc.) in the camera vicinity

•

When install market protection parts (bumper trim, etc.) to the rear bumper

■

Situations in which the system may operate unexpectedly

●

Even though there are no pedestrians in the detection area, some objects, such as the
following, may be detected, possibly causing the rear camera detection function to
operate.

•

Three dimensional objects, such as a pole, traffic cone, fence, or parked vehicle

•

Moving objects, such as a car or motorcycle

•

Objects moving toward your vehicle when backing up, such as flags or puddles (or
airborne matter, such as smoke, steam, rain, or snow)

•

Cobblestone or gravel roads, tram rails, road repairs, white lines, pedestrian cross-
ings or fallen leaves on the road

•

Metal covers (gratings), such as those used for drainage ditches

•

Objects reflected in a puddle or on a wet road surface

•

Shadows on the road

●

In some situations, such as the following, the rear camera detection function may
operate even though there are no pedestrians in the detection area.

•

When backing up toward the roadside or a bump on the road

•

When backing up toward an incline/decline

•

If the rear of the vehicle is raised or lowered due to the carried load

•

If a bumper protector, such as an additional trim strip, is installed to the rear bumper

•

If the orientation of the rear camera has been changed

•

If a towing eyelet is installed to the rear of the vehicle

•

When water is flowing over the rear camera lens

•

When the rear camera is obscured (dirt, snow, ice, etc., are attached) or scratched

•

If there is a flashing light in the detection area, such as the emergency flashers of
another vehicle

•

When a tire chains or an emergency tire puncture repair kit is used

●

Situations in which the rear camera detection function may be difficult to notice

•

The buzzer may be difficult to hear if the surrounding area is noisy, the volume of
the audio system volume is high, the air conditioning system is being used, etc.

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•

If the temperature in the cabin is extremely high or low, the audio system screen
may not operate correctly.

RCD function

Center Display

Pedestrian detection icon
Displayed automatically when a pedestrian
is detected.
(Each time the engine switch is turned off
then changed to ON, the RCD function will
be enabled automatically.)

When a pedestrian is detected

If the rear camera detection function detects a pedestrian in the detection area, the
buzzer and pedestrian detection will operate as follows:

If a pedestrian is detected in area
Buzzer: Sounds repeatedly
Pedestrian detection icon: Blinks

If a pedestrian is detected in area
Buzzer (When the vehicle is stationary):
Sounds 3 times
Buzzer (When the vehicle is backing up,
when a pedestrian approaches the rear of
the vehicle): Sounds repeatedly
Pedestrian detection icon: Blinks

If the system determines that your vehicle
may collide with a pedestrian in area
Buzzer: Sounds repeatedly
Pedestrian detection icon: Blinks

Changing the RCD settings

Turning the RCD function ON/OFF

The RCD function can be enabled/disabled on the center display as follows:

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Select

Select [Driving assist].

Select [Rear camera detection].

When the RCD function is disabled, the driving assist infomation indicator illumi-
nates on the multi-information display.

Changing the RCD buzzer volume

The buzzer volume can be adjusted on the center display.

Select

Select [Driving assist].

Select [Collision mitigation].

Select [Parking assist volume].

Temporarily muting the RCD buzzer

A mute button will be displayed on the center display when an object is detected.
To mute the buzzer, select

.To mute the buzzer, select

. The buzzers for

the intuitive parking assist sensor, RCTA and RCD function will be muted simulta-
neously.

INFORMATION

Mute will be canceled automatically in the following situations:

●

When the shift position is changed.

●

When the vehicle speed exceeds a certain speed.

●

When there is a malfunction in a sensor or the system is temporarily unavailable.

●

When the operating function is disabled manually.

●

When the engine switch is turned off.

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Brake operation when an object is detected while approaching at low
speed

Purpose of the PKSB (Parking Support Brake) system

The PKSB (Parking Support Brake) system consists of the following functions that
operate when driving at a low speed or backing up, such as when parking. When
the system determines that the probability of a collision with a detected object is
high, a warning operates to urge the driver to take evasive action.

■

Parking assist function

The system can detect the following as detectable objects. (Detectable objects
differ depending on the function.)

●

Static Objects Front and Rear of the vehicle

●

Moving Vehicles Rear of the Vehicle

●

Pedestrians Rear of the Vehicle

PKSB (Parking Support Brake) system

WARNING

■

Cautions regarding the use of the system

Do not overly rely on the system, as doing so may lead to an accident. Always drive while
checking the safety of the surroundings of the vehicle.
Depending on the vehicle and road conditions, weather, etc., the system may not operate.
The detection capabilities of sensors and radars are limited. Always drive while checking
the safety of the surroundings of the vehicle.

●

The driver is solely responsible for safe driving. Always drive carefully, taking care to
observe your surroundings. The PKSB (Parking Support Brake) system is designed
to provide support to lessen the severity of collisions. However, it may not operate in
some situations.

●

The PKSB (Parking Support Brake) system is not designed to stop the vehicle com-
pletely. Additionally, even if the system has stopped the vehicle, it is necessary to
depress the brake pedal immediately as brake control will be canceled after approxi-
mately 2 seconds.

●

It is extremely dangerous to check the system operations by intentionally driving the
vehicle into the direction of a wall, etc. Never attempt such actions.

* :

If equipped

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WARNING

■

When to disable the PKSB (Parking Support Brake) system

In the following situations, disable the PKSB (Parking Support Brake) as the system may
operate even though there is no possibility of a collision.

●

When inspecting the vehicle using a chassis roller, chassis dynamo or free roller

●

When loading the vehicle onto a boat, truck or other transport vessel

●

If the suspension has been modified or tires of a size other than specified are installed

●

If the front of the vehicle is raised or lowered due to the carried load

●

When equipment that may obstruct a sensor is installed, such as a towing eyelet,
bumper protector (an additional trim strip, etc.), bicycle carrier, or snow plow

●

When using automatic car washing devices

●

If the vehicle cannot be driven in a stable manner, such as when the vehicle has been in
an accident or is malfunctioning

●

When the vehicle is driven in a sporty manner or off-road

●

When the tires are not properly inflated

●

When the tires are very worn

●

When a tire chains, compact spare tire or an emergency tire puncture repair kit is
used

■

Precautions for the suspension

Do not modify the suspension of the vehicle. If the height or tilt of the vehicle is changed,
the sensors may not be able to detect detectable objects and the system may not operate
correctly, possibly leading to an accident.

■

System overview

If the PKSB (Parking Support Brake) determines that a collision with a detected
object or pedestrian is possible, the engine output will be restricted to restrain
any increase in the vehicle speed. (Engine output restriction control: See figure 2.)
Additionally, if the accelerator pedal continues to be depressed, the brakes will be
applied automatically to reduce the vehicle speed. (Brake control: See figure 3.)

●

Figure 1 When the PKSB (Parking Support Brake) is not operating

Engine output

Braking force

Time

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●

Figure 2 When engine output restriction control operates

Engine output

Braking force

Time

Engine output restriction control begins op-
erating (System determines that possibility
of collision with detected object is high)

●

Figure 3 When engine output restriction control and brake control operates

Engine output

Braking force

Time

Engine output restriction control begins op-
erating (System determines that possibility
of collision with detected object is high)

Brake control begins operating (System de-
termines that possibility of collision with de-
tected object is extremely high)

INFORMATION

■

If the PKSB (Parking Support Brake) system has operated

If the vehicle is stopped due to operation of the PKSB (Parking Support Brake), the PKSB
(Parking Support Brake) will be disabled and the driving assist infomation indicator will
illuminate.
If the PKSB (Parking Support Brake) system operates unnecessarily, brake control can
be canceled by depressing the brake pedal or waiting approximately 2 seconds for
it to automatically be canceled. Then, the vehicle can be operated by depressing the
accelerator pedal.

■

Re-enabling the PKSB (Parking Support Brake) system

To re-enable the PKSB (Parking Support Brake) when it has been disabled due to
operation of the PKSB (Parking Support Brake), either enable the system again, or turn
the engine switch off and then back to ON.
Additionally, if any of the following conditions are met, the system will be re-enabled
automatically and the driving assist infomation indicator will turn off:

●

The P shift position is selected

●

The object is no longer detected in the traveling direction of the vehicle

●

The traveling direction of the vehicle changes

*1 :

Except when the Pedestrians Rear of the Vehicle operated.

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Turning the PKSB (Parking Support Brake) system ON/OFF

The PKSB (Parking Support Brake) system can be changed between ON (ena-
bled) and OFF (disabled) on the center display.

Select

Select [Driving assist].

Select [Parking support brake] to change ON (enable)/OFF (disabled).

When the PKSB (Parking Support Brake) is disabled, the driving assist infomation
indicator illuminates.
When turned OFF (disabled), the PKSB (Parking Support Brake) will be disabled
and will not be enabled until the setting is changed to ON again in center display.
(The function will not be reenabled by operating the engine switch.)

PKSB (Parking Support Brake) function displays and buzzers

When the engine output restriction control or brake control operates, a buzzer
sounds and a message is displayed on the multi-information display, head-up
display

and center display to alert the driver.

Depending on the situation, output restriction control operates to either limit
acceleration or restrict output as much as possible.

■

Engine output restriction control is operating (acceleration restriction)

●

Acceleration greater than a certain amount is restricted by the system.

●

Multi-information display:"Object Detected Acceleration Reduced"

●

Head-up display

:"Object Detected Acceleration Reduced"

●

Center display: No warning displayed

●

Driving assist infomation indicator: Not illuminated

●

Buzzer: Does not sound

■

Engine output restriction control is operating (output restricted as much as
possible)

●

The system has determined that stronger-than-normal brake operation is neces-
sary.

●

Multi-information display and head-up display

: "BRAKE!"

●

Center display: "BRAKE!"

●

Driving assist infomation indicator: Not illuminated

* :

If equipped

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Lexus NX250 (2022 year). Manual in english - page 25