Lexus RX (2022 year). Manual in english - page 16

 

  Index      Manuals     Lexus RX (2022 year). Manual in english

 

Search            copyright infringement  

 

 

 

 

 

 

 

 

 

 

 

Content      ..     14      15      16      17     ..

 

 

 

Lexus RX (2022 year). Manual in english - page 16

 

 

272

4-5. Using the driving support systems

On an extremely bumpy road, on an 

incline, on gravel, or on grass.

When vehicle horns, vehicle detectors, 

motorcycle engines, air brakes of large 

vehicles, the clearance sonar of other 

vehicles or other devices which produce 

ultrasonic waves are near the vehicle

A sensor is coated with a sheet of spray 

or heavy rain.

If objects draw too close to the sensor.

When a pedestrian is wearing clothing 

that does not reflect ultrasonic waves (ex. 

skirts with gathers or frills).

When objects that are not perpendicular 

to the ground, not perpendicular to the 

vehicle traveling direction, uneven, or 

waving are in the detection range.

Strong wind is blowing

When driving in inclement weather such 

as fog, snow or a sandstorm

When an object that cannot be detected 

is between the vehicle and a detected 

object

If an object such as a vehicle, motorcycle, 

bicycle or pedestrian cuts in front of the 

vehicle or runs out from the side of the 

vehicle

If the orientation of a sensor has been 

changed due to a collision or other 

impact

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

If the front of the vehicle is raised or low-

ered due to the carried load

If the vehicle cannot be driven in a stable 

manner, such as when the vehicle has 

been in an accident or is malfunctioning

When a tire chains, compact spare tire or 

an emergency tire puncture repair kit is 

used

Situations in which the system may 

operate even if there is no possibility of a 

collision

In some situations, such as the following, the 

system may operate even though there is no 

possibility of a collision.

When driving on a narrow road

When driving toward a banner, flag, 

low-hanging branch or boom barrier 

(such as those used at railroad crossings, 

toll gates and parking lots)

When there is a rut or hole in the surface 

of the road

When driving on a metal cover (grating), 

such as those used for drainage ditches

When driving up or down a steep slope

If a sensor is hit by a large amount of 

water, such as when driving on a flooded 

road

There is dirt, snow, water drops or ice on 

a sensor. (Cleaning the sensors will 

resolve this problem.)

A sensor is coated with a sheet of spray 

or heavy rain

When driving in inclement weather such 

as fog, snow or a sandstorm

When strong winds are blowing

When vehicle horns, vehicle detectors, 

motorcycle engines, air brakes of large 

vehicles, the clearance sonar of other 

vehicles or other devices which produce 

ultrasonic waves are near the vehicle

If the front of the vehicle is raised or low-

273

4

4-5. Using the driving support systems

Driving

ered due to the carried load

If the orientation of a sensor has been 

changed due to a collision or other 

impact

The vehicle is approaching a tall or 

curved curb

Driving close to columns (H-shaped steel 

beams, etc.) in multi-story parking 

garages, construction sites, etc.

If the vehicle cannot be driven in a stable 

manner, such as when the vehicle has 

been in an accident or is malfunctioning

On an extremely bumpy road, on an 

incline, on gravel, or on grass

When a tire chains, compact spare tire or 

an emergency tire puncture repair kit is 

used

Detection range of the sensors

Approximately 100 cm (3.3 ft.)
Approximately 150 cm (4.9 ft.)
Approximately 60 cm (2.0 ft.)

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 display 
(if equipped). (As the distance to the object becomes short, the distance segments 
may blink.)

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

*

 (Rear center 

sensor)

Sensor detection display, object 
distance

A
B
C

274

4-5. Using the driving support systems

*

: Automatic buzzer mute function is enabled. (

P.275)

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

*

 (Front 

center sensor)

*

: Automatic buzzer mute function is enabled. (

P.275)

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

*

*

: Automatic buzzer mute function is enabled. (

P.275)

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

*

*

: Automatic buzzer mute function is enabled. (

P.275)

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

*1

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

275

4

4-5. Using the driving support systems

Driving

*1

: Automatic buzzer mute function is disabled. (

P.275)

*2

: The distance segments will blink slowly.

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

*1

*1

: Automatic buzzer mute function is disabled. (

P.275)

*2

: 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 30 cm (1.0 ft.)

When 2 or more objects are 
detected simultaneously, the buzzer 
sounds for the nearest object. If one 
or more objects come within 
approximately 30 cm (1.0 ft.) 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 30 cm (1.0 ft.) or less, 
this function will not operate.)

The buzzer sounds volume can be 
adjusted. (

P.267)

Multi-information display

*2

Center Display

*2

Head-up display

Multi-information display

*2

Center Display

*2

Head-up display

276

4-5. Using the driving support systems

*

: If  equipped

Meter control switches

Turning 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.278) 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 crossing traffic 
alert) function

*

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

WARNING

Cautions regarding the use of the 

function

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.262)

To ensure the system can operate 

properly

P.263

System components

A

B

C

D

277

4

4-5. Using the driving support systems

Driving

Use the meter control switches to ena-
ble/disable the RCTA function. 
(

P.80)

Vehicles without the Lexus parking 
assist-sensor

1

Press 

 or 

 to select 

.

2

Press 

 or 

 to select “RCTA” 

and then press 

.

When the RCTA function is disabled, the 
RCTA OFF indicator (

P.70) 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.)

Vehicles with the Lexus parking 
assist-sensor

1

Press 

 or 

 to select 

.

2

Press 

 or 

 to select “PKSA” 

and then press 

.

3

Press 

 or 

 to select “RCTA” 

and then press 

.

When the RCTA function is disabled, the 

RCTA OFF indicator (

P.70) 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 Una-

vailable” is shown on the multi-informa-

tion display

Water, ice, snow, mud, etc., may be attached 

to the rear bumper around the sensors. 

(

P.263) Removing the water, ice, snow, 

mud, etc., from the attached to the rear 

bumper around the sensors to return the 

function to normal.
Additionally, the function may not operate 

normally when driving in extremely hot or 

cold environments.

Rear side radar sensors

P.263

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 objects near the sensors.

 RCTA function

278

4-5. Using the driving support systems

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 (Lexus parking assist mon-
itor) (if equipped): Vehicles are 
approaching from both sides of the 
vehicle

Example (Panoramic view monitor) 
(if equipped): Vehicles are 
approaching from both sides of the 
vehicle

RCTA function detection areas

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

A
B

279

4

4-5. Using the driving support systems

Driving

The buzzer can alert the driver of 
faster vehicles approaching from far-
ther away.
Example:

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 approximately 8 

km/h (5 mph) or less.

The approaching vehicle speed is 

between approximately 8 km/h (5 mph) 

and 28 km/h (18 mph).

Setting the buzzer volume

The buzzer volume can be adjusted on the 

multi-information display. (

P.267)

Use the meter control switches to change 

settings. (

P.80)

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:

Approaching vehi-

cle speed

 Approximate 

alert distance

28 km/h (18 mph) 

(fast)

20 m (65 ft.)

8 km/h (5 mph) 

(slow)

5.5 m (18 ft.)

A

280

4-5. Using the driving support systems

When the sensor is misaligned due to a 

strong impact to the sensor or itssur-

rounding 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 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 anglepark-

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-

sary 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

281

4

4-5. Using the driving support systems

Driving

When the distance between your vehicle 

and metal 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 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

282

4-5. Using the driving support systems

*

: If  equipped

Parking Support Brake function 
(static objects) (if equipped)

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.288)

Parking Support Brake function 
(rear-crossing vehicles) (if 
equipped)

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

P.291)

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 is high, a 
warning operates to urge the driver 
to take evasive action. If the system 
determines that the possibility of a 
collision with a detected object 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

WARNING

Cautions regarding the use of the sys-

tem

Do not overly rely on the system, as 

doing so may lead to an accident.

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

283

4

4-5. Using the driving support systems

Driving

The Parking Support Brake can be 
enabled/disabled on the multi-informa-

tion display. All of the Parking Support 
Brake functions (static objects and 
rear-crossing vehicles) are ena-
bled/disabled simultaneously.
Use the meter control switches to ena-
ble/disable the parking support brake. 
(

P.80)

1

Press 

 or 

 to select 

.

2

Press 

 or 

 to select 

 

and then press 

.

When the Parking Support Brake is disa-

bled, the PKSB OFF indicator (

P.70) 

illuminates on the multi-information dis-

play.
To re-enable the system when it was disa-
bled, 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 dis-
play, to alert the driver. On vehicles with a 
head-up display, the head-up display (if 
equipped) 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)

WARNING

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 a tire chains, compact spare tire 

or an emergency tire puncture repair 

kit is used

NOTICE

If “Parking Support Brake Unavaila-

ble” is displayed on the multi-informa-

tion 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 sensors and 

their surrounding area on the bumpers.)

Enabling/Disabling the Parking 
Support Brake

Displays and buzzers for engine 
output restriction control and 
brake control

284

4-5. Using the driving support systems

Acceleration greater than a certain 
amount is restricted by the system.
Center Display (Panoramic view monitor) 
(If equipped): 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 stron-
ger-than-normal brake operation is neces-
sary.
Center Display (Panoramic view monitor) 
(If equipped): “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.
Center Display (Panoramic view monitor) 
(If equipped): “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) 
(If equipped): “Press Brake Pedal”
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 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 disabled

System overview

285

4

4-5. Using the driving support systems

Driving

Engine output
Braking force
Time

Figure 2 When engine output restriction control operates

Engine output
Braking force
Time
Engine output restriction control begins operating
System determines that possibility of collision with detected object is high
Engine output reduced
Example: Multi-information display: “BRAKE!”

A
B
C

A
B
C
D

E
F

G

286

4-5. Using the driving support systems

Figure 3 When brake control operates

Engine output
Braking force
Time
Engine output restriction control begins operating
System determines that possibility of collision with detected object is high
Engine output reduced
System determines that possibility of collision with detected object is extremely 
high
Brake control begins operating
Brake control strength increased
Example: Multi-information display: “BRAKE!”
Example: Multi-information display: “Switch to Brake”

If the Parking Support Brake has oper-

ated

If the vehicle is stopped due to operation of 

the Parking Support Brake, the Parking 

Support Brake will be disabled and the 

PKSB OFF indicator will illuminate. If the 

Parking Support Brake operates unneces-

sarily, brake control can be canceled by 

depressing the brake pedal or waiting for 

approximately 2 seconds for it to automati-

cally be canceled. Then, the vehicle can be 

operated by depressing the accelerator 

pedal.

Re-enabling the Parking Support Brake

To re-enable the Parking Support Brake 

when it has been disabled due to system 

operation perform any of the following 

operations.
At this time, the PKSB OFF indicator will 

turn off. (

P.72)

Turn the PKSB (Parking Support Brake) 

on (

P.283)

The shift lever is in P.

A
B
C
D

E
F

G

H

I

J

K

287

4

4-5. Using the driving support systems

Driving

Drive with no operation targets in the 

traveling direction of the vehicle

Change the traveling direction of the 

vehicle

If “Parking Support Brake Unavailable” 

is displayed on the multi-information 

display and the PKSB OFF indicator is 

flashing

If this message is displayed only when the 

shift lever is in any position other than R, a 

sensor on the front or rear bumper may be 

dirty. Clean the sensors and their surround-

ing area on the bumpers.

If “Parking Assist Unavailable” and 

“Parking Assist Unavailable Clean 

Parking Assist Sensor” are displayed on 

the multi-information display and the 

PKSB OFF indicator is flashing

A sensor may be covered with ice, snow, 

dirt, etc. Remove the ice, snow, dirt, etc., 

from the sensor to return the system to 

normal.

If this message is shown even after 

removing dirt from the sensor, or shown 

when the sensor was not dirty to begin 

with, have the vehicle inspected by any 

authorized Lexus retailer or Lexus 

authorized repairer, or any reliable 

repairer.

A sensor may be frozen. Once the ice 

melts, the system will return to normal.

Water may be continuously flowing over 

the sensor surface, such as in a heavy 

rain. When the system determines that it 

is normal, the system will return to nor-

mal.

If a battery terminal has been discon-

nected and reconnected

The system needs to be initialized. To initial-

ize the system, drive the vehicle straight 

ahead for 5 seconds or more at a speed of 

approximately 35 km/h (22 mph) or more. 

Additionally, for vehicles with the Parking 

Support Brake function, turn the steering 

wheel fully to the left and right with the vehi-

cle stopped.

 

 

 

 

 

 

 

Content      ..     14      15      16      17     ..