Lexus RX350 L (2022 year). Manual in english — page 15

250

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

251

4-5. Using the driving support systems

Driving

: 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.257)

■

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.260)

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

●

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

252

4-5. Using the driving support systems

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
enabled/disabled simultaneously.
Use the meter control switches to

enable/disable the parking support
brake. (



P.80)

Press

to select

Press

to select

and then press

When the Parking Support Brake is dis-

abled, the PKSB OFF indicator (



P.70)

illuminates on the multi-information dis-

play.
To re-enable the system when it was dis-
abled, 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)

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”

WARNING

●

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 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 sur-

roundings. 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

253

4-5. Using the driving support systems

Driving

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

254

4-5. Using the driving support systems

Engine output
Braking force
Time



Figure 2 When engine output restriction control operates



Figure 3 When brake control operates

A
B
C

A
B
C
D

E
F

255

4-5. Using the driving support systems

Driving

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.252)

●

The shift lever is in P.

●

Drive with no operation targets in the

traveling direction of the vehicle

●

Change the traveling direction of the

vehicle

A
B
C
D

E
F

256

4-5. Using the driving support systems

■

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 your

Lexus dealer.

●

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 22 mph (35 km/h) 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.

257

4-5. Using the driving support systems

Driving

: If equipped

This function will operate in situations such as the following if an object is detected
in the traveling direction of the vehicle.

■

When traveling at a low speed and the brake pedal is not depressed, or is
depressed late

Parking Support Brake function (static objects)

If the sensors detect a static object, such as a wall, in the travelling direction of
the vehicle and the system determines that a collision may occur due to the
vehicle suddenly moving forward due to an accidental accelerator pedal oper-
ation, the vehicle moving the unintended direction due to the wrong shift lever
position, or while parking or traveling at low speeds, the system will operate to
lessen the impact with the detected static object and reduce the resulting
damage.

Examples of function operation

258

4-5. Using the driving support systems

■

When the accelerator pedal is depressed excessively

■

When the vehicle moves in the unintended direction due to the wrong shift
lever position



P.238

■

The Parking Support Brake function

(static object) will operate when

The function will operate when the PKSB

OFF indicator is not illuminated or flashing

Types of sensors

WARNING

■

To ensure the system can operate

properly



P.239

■

If the Parking Support Brake function

(static objects) operates unnecessar-

ily, such as at a railroad crossing



P.239

■

Notes when washing the vehicle



P.240

259

4-5. Using the driving support systems

Driving

(



P.71, 72) and all of the following condi-

tions are met:

●

Engine output restriction control

• The Parking Support Brake is enabled.

• The vehicle speed is approximately 9

mph (15 km/h) or less.

• There is a static object in the traveling

direction of the vehicle and approxi-

mately 6 to 13 ft. (2 to 4 m) away.

• The Parking Support Brake determines

that a stronger-than-normal brake opera-

tion is necessary to avoid a collision.

●

Brake control

• Engine output restriction control is oper-

ating.

• The Parking Support Brake determines

that an immediate brake operation is nec-

essary to avoid a collision.

■

The Parking Support Brake function

(static objects) will stop operating when

The function will stop operating if any of the

following conditions are met:

●

Engine output restriction control

• The Parking Support Brake is disabled.

• The system determines that the collision

has become avoidable with normal brake

operation.

• The static object is no longer approxi-

mately 6 to 13 ft. (2 to 4 m) away from the

vehicle or in the traveling direction of the

vehicle.

●

Brake control

• The Parking Support Brake is disabled.

• Approximately 2 seconds have elapsed

since the vehicle was stopped by brake

control.

• The brake pedal is depressed after the

vehicle is stopped by brake control.

• The static object is no longer approxi-

mately 6 to 13 ft. (2 to 4 m) away from the

vehicle or in the traveling direction of the

vehicle.

■

Detection range of the Parking Support

Brake function (static objects)

The detection range of the Parking Support

Brake function (static objects) differs from

the detection range of the intuitive parking

assist. (



P.242) Therefore, even if the intui-

tive parking assist detects an object and

provides a warning, the Parking Support

Brake function (static objects) may not start

operating.

■

Situations in which the system may not

operate properly



P.241

■

Situations in which the system may

operate even if there is no possibility of a

collision



P.241

260

4-5. Using the driving support systems

: If equipped

This function will operate in situations such as the following if a vehicle is detected
in the traveling direction of the vehicle.

■

When reversing, a vehicle is approaching and the brake pedal is not
depressed, or is depressed late



P.232

■

The Parking Support Brake function

(rear-crossing vehicles) will operate

when

The function will operate when the PKSB

OFF indicator is not illuminated or flashing

(



P.71, 72) and all of the following condi-

tions are met:

●

Engine output restriction control

• The Parking Support Brake is enabled.

• The vehicle speed is approximately 9

mph (15 km/h) or less.

• Vehicles which are approaching from the

right or left at the rear of the vehicle at a

traveling speed of approximately 5 mph

Parking Support Brake function (rear-crossing vehicles)

If a rear radar sensor detects a vehicle approaching from the right or left at the
rear of the vehicle and the system determines that the possibility of a collision
is high, this function will perform brake control to reduce the likelihood of an
impact with the approaching vehicle.

Examples of function operation

Types of sensors

WARNING

■

To ensure the system can operate

properly



P.232

261

4-5. Using the driving support systems

Driving

(8 km/h) or more.

• The shift lever is in R.

• The Parking Support Brake determines

that a stronger than normal brake opera-

tion is necessary to avoid a collision with

an approaching vehicle.

●

Brake control

• Engine output restriction control is oper-

ating.

• The Parking Support Brake determines

that an emergency brake operation is

necessary to avoid a collision with an

approaching vehicle.

■

The Parking Support Brake function

(rear-crossing vehicles) will stop operat-

ing when

The function will stop operating if any of the

following conditions are met:

●

Engine output restriction control

• The Parking Support Brake is disabled.

• The collision becomes avoidable with

normal brake operation.

• A vehicle is no longer approaching from

the right or left at the rear of the vehicle.

●

Brake control

• The Parking Support Brake is disabled.

• Approximately 2 seconds have elapsed

since the vehicle was stopped by brake

control.

• The brake pedal is depressed after the

vehicle is stopped by brake control.

• A vehicle is no longer approaching from

the right or left at the rear of the vehicle.

■

Detection area of the Parking Support

Brake function (rear-crossing vehicles)

The detection area of the Parking Support

Brake function (rear-crossing vehicles) dif-

fers from the detection area of the RCTA

function (



P.247). Therefore, even if the

RCTA function detects a vehicle and pro-

vides an alert, the Parking Support Brake

function (rear-crossing vehicles) may not

start operating.

■

Situations in which the system may not

operate properly



P.248

■

Situations in which the system may

operate even if there is no possibility of a

collision



P.249

262

4-5. Using the driving support systems



Except F SPORT models

Normal mode

Provides an optimal balance of fuel econ-
omy, quietness, and dynamic performance.
Suitable for city driving.
Press the switch to change the driving
mode to normal mode when Eco drive
mode or sport mode is selected.

Eco drive mode

Helps the driver accelerate in an
eco-friendly manner and improve fuel
economy through moderate throttle char-
acteristics and by controlling the operation
of the air conditioning system (heat-
ing/cooling).
When not in Eco drive mode, if the driving

mode select switch is turned to the left, the
Eco drive mode indicator will come on.

Sport mode

Controls the transmission and engine to
provide quick, powerful acceleration. This
mode also changes the steering feel, mak-
ing it suitable for when agile driving
response is desired, such as when driving
on roads with many curves.
When not in sport mode, if the driving
mode select switch is turned to the right,
the “Sport” indicator will comes on.



F SPORT models (vehicles with
Adaptive Variable Suspension Sys-
tem)

Normal mode/Custom mode

Normal mode and custom mode are
selected by pressing the driving mode
select switch. Each time the switch is
pressed, the driving mode changes
between normal mode and custom mode.
When custom mode is selected, the “Cus-
tom” indicator will be illuminated.
When Eco drive mode or sport mode is

Driving mode select switch

The driving modes can be selected
to suit driving conditions.

Selecting a drive mode

263

4-5. Using the driving support systems

Driving

selected, pressing the switch changes the
driving mode to normal mode.
• Normal mode
Provides an optimal balance of fuel econ-
omy, quietness, and dynamic performance.
Suitable for city driving.
• Custom mode
Allows you to drive with the following func-
tions set to your preferred settings. Cus-
tom mode settings can only be changed on
the drive mode customization display of
the Center Display. (



P.280)

Eco drive mode

Sport mode

• Sport S mode
Controls the transmission and engine to
provide quick, powerful acceleration. This
mode is suitable for when agile driving
response is desired, such as when driving
on roads with many curves.
When not in Sport S mode, if the driving

mode select switch is turned to the right,
the “Sport S” indicator will come on.
• Sport S+ mode
Helps to ensure steering performance and
driving stability by simultaneously con-
trolling the steering and suspension in
addition to the transmission and engine.
Suitable for sportier driving.
When in Sport S mode, if the driving mode
select switch is turned to the right, the
“Sport S+” indicator will come on.



F SPORT models (vehicles without
Adaptive Variable Suspension Sys-
tem)

Normal mode

Eco drive mode

Helps the driver accelerate in an
eco-friendly manner and improve fuel

Function

Setting

Powertrain

Normal

Power

Eco

Chassis

Normal

Sport

Air conditioning sys-
tem

Normal

Eco

264

4-5. Using the driving support systems

economy through moderate throttle char-
acteristics and by controlling the operation
of the air conditioning system (heat-
ing/cooling).
When not in Eco drive mode, if the driving
mode select switch is turned to the left, the
Eco drive mode indicator will come on.

Sport mode

■

Operation of the air conditioning sys-

tem in Eco drive mode

Eco drive mode controls the heating/cool-

ing operations and fan speed of the air con-

ditioning system to enhance fuel efficiency.

To improve air conditioning performance,

adjust the fan speed or turn off Eco drive

mode.

■

Automatic deactivation of sport mode

and custom mode

If the engine switch is turned off after driv-

ing in sport mode or custom mode, the

drive mode will be changed to normal

mode.

■

Driving mode pop-up display (12.3-inch

display only)

When the driving mode is changed, the

selected driving mode will be temporarily

displayed on the side display. (



P.280)

Press the switch.
The torque of the engine is distributed
to the rear wheels to the maximum
extent possible in accordance with
driving conditions.
Pressing the switch again cancels
all-wheel drive lock mode and returns
the Dynamic Torque Control AWD
system to normal mode. (



P.266)

■

All-wheel drive lock mode can be oper-

ated when

The engine switch is in IGNITION ON

mode.

■

Automatic release for the all-wheel

drive lock mode

●

All-wheel drive lock mode is canceled

when the brakes are applied to ensure

the ABS and VSC systems operate effec-

tively.

All-wheel drive lock switch
(AWD models)

All-wheel drive lock mode can be
used when a large amount of drive
power needs to be applied to all the
wheels, such as when the vehicle
gets stuck in mud and you need to
free it.

Using All-wheel drive lock mode

265

4-5. Using the driving support systems

Driving

●

All-wheel drive lock mode is canceled

when the vehicle speed exceeds 25 mph

(40 km/h).

■

ABS (Anti-lock Brake System)

Helps to prevent wheel lock when the
brakes are applied suddenly, or if the
brakes are applied while driving on a
slippery road surface

■

Brake assist

Generates an increased level of brak-
ing force after the brake pedal is
depressed when the system detects a
panic stop situation

■

VSC (Vehicle Stability Control)

Helps the driver to control skidding
when swerving suddenly or turning on
slippery road surfaces

■

Enhanced VSC (Enhanced Vehi-
cle Stability Control)

Provides cooperative control of the
ABS, TRAC, VSC and EPS.
Helps to maintain directional stability
when swerving on slippery road sur-
faces by controlling steering perfor-
mance.

Driving assist systems

To keep driving safety and perfor-
mance, the following systems oper-
ate automatically in response to
various driving situations. Be aware,
however, that these systems are
supplementary and should not be
relied upon too heavily when oper-
ating the vehicle.

Summary of the driving assist
systems

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