Content .. 11 12 13 14 ..

Lexus ES250 (2023 year). Manual in english - page 13

218

4-5. Using the driving support systems

●

When tire chains, a compact spare tire or

an emergency tire puncture repair kit are

used.

■

Detection range of the sensors

Approximately 3.3 ft. (100 cm)

Approximately 4.9 ft. (150 cm)

Approximately 2.0 ft. (60 cm)

The diagram shows the detection range of
the sensors. Note that the sensors cannot
detect objects that are extremely close to
the vehicle.
The range of the sensors may change
depending on the shape of the object, etc.

■

Multi-information display, head-up display (if equipped) and Center Display

When an object is detected by a sensor, the approximate distance to the object will
be displayed on the multi-information display, Center Display, and head-up dis-
play. (As the distance to the object becomes short, the distance segments may
blink.)



Approximate distance to object: 4.9 ft. (150 cm) to 2.0 ft. (60 cm)

(Rear cen-

ter sensor)

Sensor detection display, object
distance

A
B
C

Multi-information display

Center Display

Head-up display

219

4-5. Using the driving support systems

Driving

: Automatic buzzer mute function is enabled. (



P.220)



Approximate distance to object: 3.3 ft. (100 cm) to 2.0 ft. (60 cm)

(Front cen-

ter sensor)

: Automatic buzzer mute function is enabled. (



P.220)



Approximate distance to object: 2.0 ft. (60 cm) to 1.5 ft. (45 cm)

: Automatic buzzer mute function is enabled. (



P.220)



Approximate distance to object: 1.5 ft. (45 cm) to 1.0 ft. (30 cm)

: Automatic buzzer mute function is enabled. (



P.220)



Approximate distance to object: 1.0 ft. (30 cm) to 0.5 ft. (15 cm)

: Automatic buzzer mute function is disabled. (



P.220)

: The distance segments will blink slowly.

Multi-information display

Center Display

Head-up display

Multi-information display

Center Display

Head-up display

Multi-information display

Center Display

Head-up display

Multi-information display

Center Display

Head-up display

220

4-5. Using the driving support systems



Approximate distance to object: Less than 0.5 ft. (15 cm)

: Automatic buzzer mute function is disabled. (



P.220)

: The distance segments will blink rapidly.

■

Buzzer operation and distance to
an object

A buzzer sounds when the sensors are
operating.



The buzzer beeps faster as the vehi-
cle approaches an object. When the
vehicle comes within the following
distance of the object, the buzzer
sounds continuously:

Approximately 1.0 ft. (30 cm)



When 2 or more objects are
detected simultaneously, the buzzer
sounds for the nearest object. If one
or more objects come within
approximately 1.0 ft. (30 cm) of the
vehicle, the buzzer will repeat a long
tone, followed by fast beeps.



Automatic buzzer mute function:
After a buzzer begins sounding, if
the distance between the vehicle
and the detected object does not
become shorter, the buzzer will be
muted automatically. (However, if
the distance between the vehicle
and object is 1.0 ft. [30 cm] or less,
this function will not operate.)

The buzzer sounds volume can be
adjusted. (



P.212)

Multi-information display

Center Display

Head-up display

221

4-5. Using the driving support systems

Driving

Meter control switches

Turn the RCTA function on/off.
When the RCTA function is disabled, the
RCTA OFF indicator illuminates.

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 (



P.223) for the detected

side will be displayed on the Center Dis-
play. This illustration shows an example of a
vehicle approaching from both sides of the
vehicle.

RCTA buzzer

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

RCTA (Rear cross traffic
alert) function

The RCTA function uses the BSM
rear side radar sensors installed on
the inner side of 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 recogni-

tion 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. (



P.205)

■

To ensure the system can operate

properly



P.206

System components

222

4-5. Using the driving support systems

Use the meter control switches to
enable/disable the RCTA function.
(



P.77)



Vehicles without the Intuitive park-
ing assist

Press

to select

Press

to select “RCTA”

and then press “OK”.

Press

to select “RCTA”

and then press “OK”.



Vehicles with the Intuitive parking
assist

Press

to select

Press

to select “PKSA”

and then press “OK”.

Press

to select “RCTA”

and then press “OK”.

When the RCTA function is disabled, the

RCTA OFF indicator (



P.66) illuminates

on the multi-information display. (Each

time the engine switch is turned off then

changed to IGNITION ON mode, the

RCTA function will be enabled automati-

cally.)

■

Outside rear view mirror indicator visi-

bility

In strong sunlight, the outside rear view mir-

ror 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.

■

When “Rear Cross Traffic Alert

Unavailable” is shown on the multi-

information display

Ice, snow, mud, etc., may be attached to the

rear bumper around the sensors.

(



P.206) Remove the ice, snow, mud, etc.,

attached to the rear bumper around the

sensors to return the function to normal.

Additionally, the sensors may not operate

normally when driving in extremely hot or

cold environments.

■

Rear side radar sensors



P.206

■

Operation of the RCTA function

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.

Turning the RCTA function
on/off

NOTICE

■

Before using the RCTA function

Do not place obstacles near the sensors.

RCTA function

223

4-5. Using the driving support systems

Driving

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 dis-
played on the Center Display.

Example: Vehicles are approaching from
both sides of the vehicle

■

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 far-
ther away.

Example:

A
B

Approaching vehi-

cle speed

Approximate

alert distance

18 mph (28 km/h)

(fast)

65 ft. (20 m)

5 mph (8 km/h)

(slow)

18 ft. (5.5 m)

224

4-5. Using the driving support systems

■

The RCTA function is operational when

The RCTA function operates when all of the

following conditions are met:

●

The engine switch is in IGNITION ON

mode.

●

The RCTA function is on.

●

The shift lever is in R.

●

The vehicle speed is less than approxi-

mately 5 mph (8 km/h).

●

The approaching vehicle speed is

between approximately 5 mph (8 km/h)

and 18 mph (28 km/h).

■

Setting the buzzer volume

The buzzer volume can be adjusted on the

multi-information display.
Use the meter control switches to change

settings. (



P.77)



Vehicles without the Intuitive parking

assist

Press

to select

Press

to select “RCTA”,

then press “OK”.

Press

to select

and then

press “OK”.

Each time the switch is pressed, the volume
level will change between 1, 2 and 3.



Vehicles with the Intuitive parking assist



P.212

■

Muting a buzzer temporarily



Vehicles without the Intuitive parking

assist

A mute button will be displayed on the
multi-information display when an object is
detected. To mute the buzzer, press “OK”.

●

When the shift lever is changed.

●

When the vehicle speed exceeds a cer-

tain speed.

●

When the operating function is tempo-

rarily canceled.

●

When the operating function is disabled

manually.

●

When the engine switch is turned off.



Vehicles with the Intuitive parking assist



P.212

■

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

●

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

: Depending on the conditions, detection

of a vehicle and/or object may occur.

■

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 sur-

rounding 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

225

4-5. Using the driving support systems

Driving

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 vehi-

cle.

●

When a vehicle is approaching at high

speed.

●

When equipment that may obstruct a

sensor is installed, such as a towing eye-

let, 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 park-

ing spot.

●

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 sen-

sor 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 low-

ered 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 unneces-

sarily detecting a vehicle and/or object may

increase in the following situations:

●

When the parking space faces a street

and vehicles are being driven on the

street.

●

When the distance between your vehicle

and metal objects, such as a guardrail,

wall, sign, or parked vehicle, which may

reflect electrical waves toward the rear of

the vehicle, is short.

226

4-5. Using the driving support systems

●

When equipment that may obstruct a

sensor is installed, such as a towing eye-

let, 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 con-

ditioning 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 sen-

sor 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 low-

ered due to the carried load.

227

4-5. Using the driving support systems

Driving

: If equipped

Pedestrian detection icon

Displayed automatically when a pedestrian
is detected.

Use the meter control switches to
enable/disable the RCD function.
(



P.77)

Press

to select

Press

to select “PKSA”

and then press “OK”.

RCD (Rear Camera Detec-
tion) function

When the vehicle is backing up, the
rear camera detection function can
detect pedestrians in the detection
area behind the vehicle. If a pedes-
trian 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 under-
standing of the surrounding situations.

■

To ensure the system can operate

properly

Observe the following, otherwise there is

the danger that could lead to an acci-

dent.

●

Always clean the camera without

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 sub-

jected 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 trunk 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 genu-

ine parts are installed.

RCD display

Turning the RCD function on/off

228

4-5. Using the driving support systems

Press

to select “RCD”

and then press “OK”.

When the RCD function is disabled, the

RCD OFF indicator (



P.66) illuminates

on the multi-information display.
Each time the engine switch is turned off

then changed to IGNITION ON mode,

the RCD function will be enabled automat-

ically.

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

If a pedestrian is detected in area

Buzzer: Sounds repeatedly
Pedestrian detection icon: Blinks 3
times and then stays on

If a pedestrian is detected in area

Buzzer (When the vehicle is sta-
tionary): Sounds 3 times
Buzzer (When the vehicle is back-
ing up, when a pedestrian

approaches the rear of the vehicle):
Sounds repeatedly
Pedestrian detection icon: Blinks 3
times and then stays on

If the system determines that your
vehicle may collide with a pedes-
trian in area
Buzzer: Sounds repeatedly
Pedestrian detection icon: Blinks 3
times and then stays on

■

The rear camera detection function is

operational when

●

The engine switch is in IGNITION ON

mode.

●

RCD function is on.

●

The shift lever is in R.

■

Setting the buzzer volume

The buzzer volume of the RCD, intuitive

parking assist and RCTA can all be

adjusted at once on the multi-information

display. (



P.212)

■

If “Rear Camera Detection Unavailable

Remove the Dirt of Rear Camera” is

displayed on the multi-information dis-

play

A rear camera lens may be dirty or covered

with snow or ice. In such cases, if it is

removed from the rear camera lens, the

system should return to normal. (It may be

necessary to drive the vehicle for some time

before the system returns to normal.)

■

If “Rear Camera Detection Unavail-

able” is displayed on the multi-informa-

tion display

●

If the trunk lid is open, fully close it.

●

If this message is displayed only when the

shift lever is in R, the rear camera lens

may be dirty. Clean the rear camera lens.

■

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 func-

When a pedestrian is detected

229

4-5. Using the driving support systems

Driving

tion 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 hid-

den by an object, such as a cart or

umbrella

• Pedestrians which are obscured by dark-

ness, such as at night

●

In some situations, such as the following,

pedestrians may not be detected by the

rear camera detection function, prevent-

ing 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 sud-

denly, 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 vehicle height is extremely

changed (nose up, nose down)

• When tire chains or an emergency tire

puncture repair kit are used

• When the suspension has been lowered

or tires of a size other than specified are

installed

• When market electronic parts (such as

illuminated license plate, fog lights, etc.)

are installed in the rear camera vicinity

• When market protection parts (bumper

trim, etc.) are installed 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 func-

tion to operate.

• Three dimensional objects, such as a

pole, traffic cone, fence, or parked vehi-

cle

• Moving objects, such as a car or motor-

cycle

• Objects moving toward your vehicle

when backing up, such as flags or pud-

dles (or airborne matter, such as smoke,

steam, rain, or snow)

• Cobblestone or gravel roads, tram rails,

road repairs, white lines, pedestrian

crossings or fallen leaves on the road

• Metal covers (gratings) or 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 pedes-

trians 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 low-

ered due to the carried load

• When market electronic parts (such as

illuminated license plate, fog lights, etc.)

are installed in the rear camera vicinity

• When market protection parts (bumper

trim, etc.) are installed to the rear

bumper.

• If the orientation of the rear camera has

been changed due to a collision or other

impact, or removal and installation

• If a towing eyelet is installed to the rear of

the vehicle

• When water is flowing over the rear cam-

era 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 tire chains or an emergency tire

230

4-5. Using the driving support systems

puncture repair kit are 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.

• If the temperature in the cabin is

extremely high or low, the Center Dis-

play may not operate correctly.

: If equipped

■

Parking Support Brake function
(static objects)

Ultrasonic sensors are used to detect
static objects, such as a wall, in the
detection area when driving at a low
speed or backing up. (



P.237)

■

Parking Support Brake function
(rear-crossing vehicles)

Rear radar sensors are used to detect
approaching vehicles in the detection
area behind the vehicle when backing
up. (



P.240)

PKSB (Parking Support
Brake)

The 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 deter-
mines that the possibility of a colli-
sion with a detected object or
pedestrian is high, a warning oper-
ates to urge the driver to take eva-
sive action. If the system
determines that the possibility of a
collision with a detected object or
pedestrian is extremely high, the
brakes are automatically applied to
help avoid the collision or help
reduce the impact of the collision.

PKSB (Parking Support Brake)
system

231

4-5. Using the driving support systems

Driving

■

Parking Support Brake function
(rear pedestrians) (if equipped)

A rear camera sensor is used to detect
pedestrians in the detection area
behind the vehicle when backing up.
(



P.242)

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 con-
ditions, 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 Parking Support Brake system is

designed to provide support to lessen

the severity of collisions. However, it

may not operate in some situations.

●

The 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 immedi-

ately as brake control will be canceled

after approximately 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.

■

When to disable the Parking Support

Brake

In the following situations, disable the

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 addi-

tional trim strip, etc.), bicycle carrier,

or snow plow.

●

When using automatic car washing

devices.

●

If the vehicle cannot be driven in a sta-

ble manner, such as when the vehicle

has been in an accident or is malfunc-

tioning.

●

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 tire chains, a compact spare tire

or an emergency tire puncture repair

kit are used.

●

During emergency towing

232

4-5. Using the driving support systems

The Parking Support Brake can be
enabled/disabled on the multi-infor-
mation display. All of the Parking Sup-
port Brake functions (static objects,
rear-crossing vehicles, and rear
pedestrians) are enabled/disabled
simultaneously.
Use the meter control switches to
enable/disable the parking support
brake. (



P.77)

Press

to select

Press

to select

and

then press “OK”.

When the Parking Support Brake is dis-

abled, the PKSB OFF indicator (



P.66)

illuminates on the multi-information dis-

play.

To re-enable the system, select

on the

multi-information display, select

and

turn it on. If the system is disabled, it will

remain off even if the engine switch is

turned to IGNITION ON mode after the

engine switch has been turned off.

If the engine output restriction control or
brake control operates, a buzzer will
sound and a message will be displayed on
the Center Display and multi-information
display, to alert the driver. On vehicles with
a head-up display, the head-up display will
display the same message as the multi-
information display.
Depending on the situation, engine output
restriction control will operate 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.
Center Display (Panoramic view monitor):
No warning displayed
Multi-information display: “Object
Detected Acceleration Reduced”
PKSB OFF 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 necessary.
Center Display (Panoramic view monitor):
“BRAKE!”
Multi-information display: “BRAKE!”
PKSB OFF indicator: Not illuminated
Buzzer: Short beep



Brake control is operating

The system determined that emergency
braking is necessary.

NOTICE

■

If “Parking Support Brake Unavail-

able” is displayed on the multi-infor-

mation display and the PKSB OFF

indicator is flashing

If this message is displayed immediately

after the engine switch is changed to

IGNITION ON mode, operate the vehi-

cle carefully, paying attention to your

surroundings. It may be necessary to

drive the vehicle for a certain amount of

time before the system returns to normal.

(If the system is not return to normal after

driving for a while, clean the rear camera

lens.)

Enabling/Disabling the Parking
Support Brake

Displays and buzzers for engine
output restriction control and
brake control

233

4-5. Using the driving support systems

Driving

Center Display (Panoramic view monitor):
“BRAKE!”
Multi-information display: “BRAKE!”
PKSB OFF indicator: Not illuminated
Buzzer: Short beep



Vehicle stopped by system opera-
tion

The vehicle has been stopped by brake
control operation.

Center Display (Panoramic view monitor):
“Switch to Brake” (If the accelerator pedal
is not depressed, “Press Brake Pedal” will
be displayed.)
Multi-information display: “Switch to
Brake” (If the accelerator pedal is not
depressed, “Press Brake Pedal” will be dis-
played.)
PKSB OFF indicator: Illuminated
Buzzer: Short beep

If the 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 below.)
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
below.)



Figure 1 When the PKSB (Parking Support Brake) is disabled

Engine output

Braking force

Time



Figure 2 When engine output restriction control operates

System overview

A
B
C

Content .. 11 12 13 14 ..