Content .. 11 12 13 14 ..

Lexus IS500 (2022 year). Manual in english - page 13

216

4-5. Using the driving support systems

: If equipped

■

Parking Support Brake function
(static objects)



P.222

■

Parking Support Brake function
(rear-crossing vehicles)



P.225

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

●

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

217

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
enabled/disabled simultaneously.
Use the meter control switches to
enable/disable the parking support
brake. (



P.76)

Press

to select

Press

to select “

PKSB” and then press

When the Parking Support Brake is dis-

abled, the PKSB OFF indicator (



P.66)

illuminates on the multi-information dis-

play.
When the Parking Support Brake is turned

on or off, operation of the Parking Support

Brake continues in the same condition the

next time the engine is started.

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.
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”
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.

WARNING

●

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

218

4-5. Using the driving support systems

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

Engine output
Braking force
Time

System overview

A
B
C

219

4-5. Using the driving support systems

Driving



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!”



Figure 3 When brake control operates

Engine output
Braking force

A
B
C
D

E
F

A
B

220

4-5. Using the driving support systems

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.66)

●

Turn the PKSB (Parking Support Brake)

on (



P.217)

●

The engine switch is turned to IGNI-

TION ON mode after the engine switch

has been turned off.

●

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 (such as changing from moving

forward to backing up, or from backing

up to moving forward)

■

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 Support Brake Unavailable”

and “Parking Assist Unavailable Clean

Parking Assist Sensor” is 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

C
D

E
F

221

4-5. Using the driving support systems

Driving

ahead for 5 seconds or more at a speed of

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

222

4-5. Using the driving support systems

: 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

223

4-5. Using the driving support systems

Driving

■

When the accelerator pedal is depressed excessively

■

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



P.203

■

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.204

■

If the Parking Support Brake function

(static objects) operates unnecessar-

ily, such as at a railroad crossing



P.220

■

Notes when washing the vehicle



P.205

224

4-5. Using the driving support systems

(



P.66, 65) 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.207) Therefore, even if the intu-

itive 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.206

■

Situations in which the system may

operate even if there is no possibility of a

collision



P.206

225

4-5. Using the driving support systems

Driving

: 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.197

■

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.66, 65) 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.197

226

4-5. Using the driving support systems

(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.211). 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.213

■

Situations in which the system may

operate even if there is no possibility of a

collision



P.214

227

4-5. Using the driving support systems

Driving



Vehicles without Adaptive Variable
Suspension System

Except F SPORT models
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.



Vehicles with Adaptive Variable
Suspension System

Normal mode/Customized mode

Normal mode and customized mode are
selected by pressing the driving mode
select switch. Each time the switch is
pressed, the driving mode changes
between normal mode and customized
mode. When customized mode is

Driving mode select switch

The driving modes can be selected
to suit driving condition.

Selecting a drive mode

A
B

228

4-5. Using the driving support systems

selected, the “Customize” indicator will be
illuminated.
When Eco drive mode or sport mode is
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.
• Customized mode
Allows you to drive with the following func-
tions set to your preferred settings. Cus-
tomized mode settings can only be
changed on the drive mode customization
display of the Center Display. (



P.240)

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

• 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.

■

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 customized mode

If the engine switch is turned off after driv-

ing in sport mode or customized mode, the

drive mode will be changed to normal

mode.

■

Driving mode pop-up display (10.3-inch

display only)

When the driving mode is changed, the

selected driving mode will be temporarily

displayed on the side display. (



P.241)

Function

Setting

Powertrain

Normal

Power

Eco

Chassis

Normal

Sport

Air conditioning sys-
tem

Normal

Eco

229

4-5. Using the driving support systems

Driving

■

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.

■

TRAC (Traction Control)

Helps to maintain drive power and pre-
vent the drive wheels from spinning
when starting the vehicle or accelerat-
ing on slippery roads

■

Active Cornering Assist (ACA)

Helps to prevent the vehicle from drift-
ing to the outer side by performing
inner wheel brake control when
attempting to accelerate while turning

■

Hill-start assist control

Helps to reduce the backward move-
ment of the vehicle when starting on an
uphill

■

EPS (Electric Power Steering)

Employs an electric motor to reduce
the amount of effort needed to turn the
steering wheel.

■

Adaptive Variable Suspension sys-
tem (if equipped)

Controls the damping force of the
shock absorber of each wheel accord-
ing to the road and driving conditions,
helping achieve a comfortable ride,
excellent driveability and a high level of
stability.
If SPORT S+ mode is selected using
the driving mode select switch, the
damping force will become more suit-
able for sporty driving. (



P.227)

■

VDIM (Vehicle Dynamics Inte-
grated Management)

Provides integrated control of the
ABS, brake assist, TRAC, VSC,
hill-start assist control and EPS systems
Helps to maintain vehicle stability when
swerving on slippery road surfaces by

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

230

4-5. Using the driving support systems

controlling the brakes, engine output
and steering assist.

■

The Secondary Collision Brake

When the SRS airbag sensor detects a
collision and the system operates, the
brakes and brake lights are automati-
cally controlled to reduce the vehicle
speed and help reduce the possibility
of further damage due to a secondary
collision.

■

When the TRAC/VSC systems are

operating

The slip indicator light will flash while the

TRAC/VSC systems are operating.

■

Disabling the TRAC system

If the vehicle gets stuck in mud, dirt or snow,

the TRAC system may reduce power from
the engine to the wheels. Pressing the

switch to turn the system off may make it

easier for you to rock the vehicle in order to

free it.
To turn the TRAC system off, quickly press
and release

switch.

The “Traction Control Turned Off” will be
shown on the multi-information display.

Press the

switch again to turn the sys-

tem back on.

■

Turning off both TRAC and VSC sys-

tems

To turn the TRAC and VSC systems off,
press and hold the

switch for more

than 3 seconds while the vehicle is stopped.
The VSC OFF indicator light will come on
and the “Traction Control Turned Off” will
be shown on the multi-information display.

Press the

switch again to turn the sys-

tem back on.

: Pre-collision brake assist and pre-colli-

sion braking will also be disabled. The
pre-collision system warning light will
come on and the message will be shown
on the multi-information display.
(



P.174)

■

When the message is displayed on the

multi-information display showing that

TRAC has been disabled even if the

VSC OFF switch has not been pressed

TRAC is temporary deactivated. If the infor-

mation continues to show, contact your

Lexus dealer.

■

Operating conditions of hill-start assist

control

When the following four conditions are met,

the hill-start assist control will operate:

●

The shift lever is in a position other than P

or N (when starting off forward/back-

ward on an upward incline)

●

The vehicle is stopped

●

The accelerator pedal is not depressed

●

The parking brake is not engaged

●

Engine switch is turned to IGNITION

ON mode

231

4-5. Using the driving support systems

Driving

■

Automatic system cancelation of

hill-start assist control

The hill-start assist control will turn off in any

of the following situations:

●

The shift lever is shifted to P or N

●

The accelerator pedal is depressed

●

The parking brake is engaged

●

2 seconds at maximum elapsed after the

brake pedal is released

●

Engine switch is turned to ACCESSORY

mode or turned off

■

Sounds and vibrations caused by the

ABS, brake assist, VSC, TRAC and

hill-start assist control systems

●

A sound may be heard from the engine

compartment when the brake pedal is

depressed repeatedly, when the engine is

started or just after the vehicle begins to

move. This sound does not indicate that a

malfunction has occurred in any of these

systems.

●

Any of the following conditions may

occur when the above systems are oper-

ating. None of these indicates that a mal-

function has occurred.

• Vibrations may be felt through the vehicle

body and steering.

• A motor sound may be heard also after

the vehicle comes to a stop.

• The brake pedal may pulsate slightly after

the ABS is activated.

• The brake pedal may move down slightly

after the ABS is activated.

■

Active Cornering Assist operation

sounds and vibrations

When the Active Cornering Assist is oper-

ated, operation sounds and vibrations may

be generated from the brake system, but

this is not a malfunction.

■

Automatic reactivation of TRAC and

VSC systems

After turning the TRAC and VSC systems

off, the systems will be automatically

re-enabled in the following situations:

●

When the engine switch is turned off

●

If only the TRAC system is turned off, the

TRAC will turn on when vehicle speed

increases

If both the TRAC and VSC systems are

turned off, automatic re-enabling will not

occur when vehicle speed increases.

■

EPS operation sound

When the steering wheel is operated, a

motor sound (whirring sound) may be

heard. This does not indicate a malfunction.

■

Reduced effectiveness of the EPS sys-

tem

The effectiveness of the EPS system is

reduced to prevent the system from over-

heating when there is frequent steering

input over an extended period of time. The

steering wheel may feel heavy as a result.

Should this occur, refrain from excessive

steering input or stop the vehicle and turn

the engine off. The EPS system should

return to normal within 10 minutes.

■

Operating conditions of Active Corner-

ing Assist

The system operates when the following

occurs.

●

TRAC/VSC can operate

●

The driver is attempting to accelerate

while turning

●

The system detects that the vehicle is

drifting to the outer side

●

The brake pedal is released

■

Secondary Collision Brake operating

conditions

The system operates when the SRS airbag

sensor detects a collision while the vehicle

is in motion.
However, the system does not operate in

any of the following situations.

●

The vehicle speed is below 6 mph (10

km/h)

●

Components are damaged

■

Secondary Collision Brake automatic

cancellation

The system is automatically canceled in any

of the following situations.

●

The vehicle speed drops below approxi-

mately 6 mph (10 km/h)

●

A certain amount of time elapses during

operation

Content .. 11 12 13 14 ..