LEXUS LS 500 (2019 year). Instruction

284

4-5. Using the driving support systems

LS500_OM_(U)_1809

●

Objects which are extremely close to a

radar sensor

●

Vehicles which are approaching from the

right or left at the rear of the vehicle at a

traveling speed of less than approxi-

mately 5 mph (8 km/h)

●

Vehicles which are approaching from the

right or left at the rear of the vehicle at a

traveling speed of more than approxi-

mately 15 mph (24 km/h)

■

PKSB buzzer

If the Parking Support Brake is enabled and

brake control is performed, a buzzer will

sound to notify the driver.

■

Situations in which the system may

operate even though there is no possi-

bility of a collision

In some situations such as the following, the

Parking Support Brake function

(rear-crossing vehicles) may operate even

though there is no possibility of a collision.

●

When the parking space faces a street

and vehicles are being driven on the

street

●

When a detected vehicle turns while

approaching the vehicle

●

When a vehicle passes by the side of your

vehicle

●

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

●

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

■

Situations in which the Parking Support

Brake function (rear-crossing vehicles)

may not operate properly

In some situations, such as the following, the

radar sensors may not detect an object and

this function may not operate properly

●

Stationary objects

●

When a sensor or the area around a sen-

sor is extremely hot or cold

●

If the rear bumper is covered with ice,

snow, dirt, etc.

●

When it is raining heavily or water strikes

the vehicle

●

If the vehicle is significantly tilted

285

4-5. Using the driving support systems

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Driving

●

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 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

●

If an electronic component, such as a

backlit license plate (especially fluores-

cent type), fog lights, fender pole or wire-

less antenna is installed near a radar

sensor

●

If the orientation of a radar sensor has

been changed

●

When multiple vehicles are approaching

with only a small gap between each vehi-

cle

●

If a vehicle is approaching the rear of

your vehicle rapidly

●

Situations in which the radar sensor may

not detect a vehicle

• When a vehicle approaches from the

right or left at the rear of the vehicle while

you are turning while backing up

• When turning while backing up

• When backing out of a shallow angle

parking spot

• When backing up on a slope with a sharp

change in grade

• When a vehicle turns into the detection

area

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4-5. Using the driving support systems

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Driving

■

Parking Support Brake function (rear

pedestrians) will operate when

The function will operate when the PKSB

OFF indicator is not illuminated or flashing

(

P.69, 70) and all of the following condi-

tions are met:

●

Engine output restriction control

• The Parking Support Brake is enabled.

• The vehicle speed is 9 mph (15 km/h) or

less.

• The shift position is in R.

• The rear camera sensor detects a pedes-

trian behind the vehicle while backing up

and the system determines that the possi-

bility of colliding with the detected

pedestrian is high.

●

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 a

pedestrians.

■

The Parking Support Brake function

(rear pedestrians) 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 collision becomes avoidable with

normal brake operation.

• The pedestrian is no longer detected

behind your 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 pedestrian is no longer detected

behind your vehicle.

■

Re-enabling the Parking Support Brake

function (rear pedestrians)

P.274

■

Detection area of the Parking Support

Brake function (rear pedestrians)

The detection area of the Parking Support

Brake function (rear pedestrians) differs

from the detection area of the RCD func-

tion (

P.268). Therefore, even if the RCD

function detects a vehicle and provides an

alert, the Parking Support Brake function

(rear-crossing vehicles) may not start oper-

ating.

■

Situations in which the system may not

operate properly

●

Some pedestrians, such as the following,

may not be detected by the Parking Sup-

port Brake function (rear pedestrians),

preventing the function from operating

properly:

• Pedestrians who are bending forward or

squatting

• Pedestrians who are lying down

• Pedestrians who are running

• Pedestrians who suddenly enter the

detection area

WARNING

■

If the Parking Support Brake function

(rear pedestrians) operates unneces-

sarily

Depress the brake pedal immediately

after the Parking Support Brake function

(rear pedestrians) operates. (Operation

of the function is canceled by depressing

the brake pedal.)

■

Correct use of the Parking Support

Brake function (rear pedestrians)

Do not overly rely on the Parking Sup-

port Brake function (rear pedestrians).

Depending on the road conditions, vehi-

cle conditions and weather, this function

may not operate correctly. As the detec-

tion performance of the rear camera is

limited, always drive safely, taking care to

observe your surroundings.

Additionally, if the PKSB OFF indictor is

flashing or a warning message is dis-

played on the center display indicating

that the Parking Support Brake function

(rear pedestrians) is unavailable, the

function cannot be used. Even if these

warnings are not output, the driver is

always responsible for paying attention

to the vehicle’s surroundings and driving

safely.

288

4-5. Using the driving support systems

LS500_OM_(U)_1809

• 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

Parking Support Brake function (rear

pedestrians), preventing the function

from operating properly:

• When backing up in inclement weather

(rain, snow, fog, etc.)

• When the rear camera is obscured (dirt,

snow, ice, etc. are attached) or scratched

• When a very bright light, such as the sun,

or the headlights of another vehicle,

shines directly into the rear camera

• When backing up in a place where the

surrounding brightness changes 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

●

Even though there are no pedestrians in

the detection area, some objects, such as

the following, may be detected, possibly

causing the Parking Support Brake func-

tion (rear pedestrians) 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), such as those

used for drainage ditches

• Objects reflected in a puddle or on a wet

road surface

• The roadside or bumps on the road

• Shadows on the road

●

In some situations, such as the following,

the Parking Support Brake function (rear

pedestrians) may operate even though

there are no pedestrians in the detection

area.

• When backing up toward the roadside or

a bump on the road

• If the vehicle is significantly tilted, such as

when carrying a heavy load

• When backing up toward an

incline/decline

• If the suspension has been modified or

tires of a size other than specified are

installed

• If the rear of the vehicle is raised or low-

ered due to the carried load

• If an electronic component, such as a

backlit license plate or rear fog light, is

installed near the rear camera

• If a bumper protector, such as an addi-

tional trim strip, is installed to the rear

bumper

• If the orientation of the rear camera has

been changed

• If a towing eyelet is installed to the rear of

the vehicle

• When water is flowing over the rear 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

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Driving



Vehicles without Adaptive Variable
Suspension System

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 not in normal
mode.

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 backward, 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 forward, the
sport mode indicator will comes on.



Vehicles with Adaptive Variable
Suspension System

Except F SPORT models
F SPORT models

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 normal mode is selected, the normal
mode indicator comes on.
When custom mode is selected, the cus-
tom mode indicator comes on.
Press the switch to change the driving
mode to normal mode when not in normal
mode.
• Normal mode
Provides an optimal balance of fuel econ-
omy, quietness, and dynamic performance.

Driving mode select switch

The driving modes can be selected
to suit driving condition.

Selecting a drive mode

A
B

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4-5. Using the driving support systems

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Suitable for city driving.
When the shift position is in D, an appropri-
ate gear for sporty driving may automati-
cally be selected according to driver
performance and driving conditions.
• Custom mode
Allows you to drive with the powertrain,
chassis and air conditioning system 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.306)

Comfort mode

By controlling the suspension, riding com-
fort is further enhanced. Suitable for city
driving.
When not in comfort mode and the driving
mode select switch is turned backward, the
comfort mode indicator comes on.

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 in comfort mode, if the driving mode
select switch is turned backward, the Eco
drive mode indicator comes 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 forward, the
Sport S mode indicator comes 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 forward, the Sport
S+ mode indicator comes on.

■

If the driving mode select switch is oper-

ated while the opening screen is being

displayed

If the driving mode select switch is operated

while the opening screen is being displayed,

the driving mode will be changed and the

meter display will change accordingly after

the opening screen operation has com-

pleted.

■

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,

perform the following operations:

●

Turn off eco air conditioning mode

(

P.318)

●

Adjust the fan speed (

P.313)

●

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

When the driving mode is changed, the

selected driving mode will be temporarily

displayed on the side display. (

P.307)

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Driving

: If equipped

■

Situations in which the vehicle height

control may not operate properly

●

In the following situations, the vehicle

height may change slowly or may not

change to the correct height:

• When the vehicle comes into contact

with snow, ice, stone, etc.

• When the ambient temperature is low

• When the accumulator tank pressure is

low

●

In the following situations, the vehicle

height may not change:

• If the hood or trunk is not fully closed

• If the brake pedal depressed and the

vehicle is stopped

• When the vehicle is on a significantly

uneven or undulating road

• When the vehicle is on a slanted road or a

slope

■

Operating sound of the air suspension

compressor and valves

When the vehicle height is changed, such

as due to passengers entering the vehicle or

cargo being loaded, or when the vehicle

height is changed using the vehicle height

adjustment switch, the air suspension com-

pressor and valves may operate and a

sound may be heard. This does not indicate

a malfunction.

■

When the accumulator tank pressure is

low

When the accumulator tank pressure is low,

the air suspension compressor and valves

may operate repeatedly even though the

vehicle height is not being changed. This

does not indicate a malfunction.

Electronically modulated air
suspension

The height of the vehicle when driv-
ing can be selected using the vehi-
cle height adjustment switch. The
selected height level will be main-
tained regardless of the number of
passengers or weight of cargo.

Additionally, settings of the follow-
ing functions can be changed:

 Enabling/Disabling controls of

access mode

 Temporarily disabling vehicle

height control

WARNING

■

Situations in which the operation of

the electronically modulated air sus-

pension should be temporarily dis-

abled

In the following situations, make sure to

temporarily disable all functions of the

vehicle height control of the electroni-

cally modulated air suspension and then

stop the engine. Otherwise, the vehicle

height may change and part of your body

may be caught under the vehicle, possi-

bly causing injury.

●

When the vehicle is parked on a curb

●

If any of the wheels is not touching the

ground

●

If the vehicle needs to be jacked up

●

If the vehicle is to be tied down

●

If the vehicle is to be towed

■

Vehicle height control precautions

In the following situations, make sure to

check the safety of the area around the

vehicle, as the vehicle height may change

and part of someone’s body may be

caught in the vehicle, possibly causing

injury or the vehicle may be damaged.

●

When opening a door

●

When unlocking the doors using the

smart access system with push-button

start

●

When changing the vehicle height

using the vehicle height adjustment

switch

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4-5. Using the driving support systems

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To adjust the vehicle height to one
appropriate for road and driving con-
ditions, press the vehicle height adjust-
ment switch.
Turns high mode on/off.

When high mode is enabled, the high
mode indicator on the meter will illuminate.
The vehicle height will increase by approxi-
mately 0.8 in. (20 mm) from its normal
position.
When the vehicle height is increased by a
control of access mode press the vehicle
height adjustment switch twice to
enable/disable high mode.

■

The vehicle height adjustment switch

can be used to change the mode when

The engine switch is in IGNITION ON

mode.

■

System protection function

If the vehicle height is repeatedly increased

and decreased using the vehicle height

adjustment switch, etc., the system may not

operate temporarily.

In order to improve the ease of enter-
ing and exiting the vehicle, the vehicle
height will increase automatically.



Enter control

If any of the following operations are
performed, the vehicle height will
increase automatically:
 When the doors are unlocked using

the smart access system with
push-button start

 When the doors are unlocked using

the wireless remote control and
then a door is opened.

The vehicle height will increase by approxi-
mately 1.2 in. (30 mm) from its normal
position.
The vehicle height may not increase, if the
vehicle height already reaches the
selected height.
The vehicle will return to its normal height
when the vehicle speed reaches approxi-
mately 12 mph (20 km/h).



Exit control

When “Select Parking Height” is set to
“High”, the vehicle height will automati-

NOTICE

■

Parking precaution

If the vehicle is parked for a long time, the

vehicle height may change due to

changes in the ambient temperature.

When parking the vehicle, make sure

that the area above and below the vehi-

cle is clear, so that the vehicle will not

contact anything if its height changes.
Be careful when parking the vehicle in an

area with a low ceiling or near low hang-

ing objects, as the vehicle height will

increase when passengers exit the vehi-

cle and exit control of access mode

operates.

Selecting the vehicle height

Vehicle height control when
entering/exiting the vehicle
(“Access Mode”)

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4-5. Using the driving support systems

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Driving

cally increase when the P shift position
is selected and a door is opened.

Press

to select

Press

to select “Vehicle

Settings” and then press

Press

to select

and then press

Press

to select “Select

Parking Height” and then press

The vehicle height will increase by approxi-
mately 0.4 in. (10 mm) from its normal
position.
The vehicle height may not increase, if the
vehicle height already reaches the
selected height.
The vehicle will return to its normal height
when the vehicle speed reaches approxi-
mately 12 mph (20 km/h).

■

Enabling/Disabling access mode

Press the

meter control

switch to select

Press the

meter control

switch to select “Vehicle Settings”
and then press

Press the

meter control

switch to select

and then

press .

Press the

meter control

switch to select “Access Mode”
and then press

The setting will change between

enabled/disabled each time the

meter control switch is pressed.

■

When the vehicle height has been

increased by a control of access mode

Press the vehicle height adjustment switch

with the engine switch in any mode to return

the vehicle to its previous vehicle height.

■

Access mode operation

●

Access mode will not operate if the vehi-

cle is not parked on a level road surface.

●

When the P shift position is selected, if

the doors are not locked and any door is

opened from the outside, exit control will

operate.

Vehicle height control can be tempo-
rarily disabled using the meter control
switches. (

P.81)

When to temporarily disable vehicle height
control:

P.291

Press

to select

Press

to select “Vehicle

Settings” and then press

Press

to select

and then press

Press

to select “Height

Control” and then press

This setting is memorized even if the
engine switch is turned off.

Even if the vehicle height control func-
tions are disabled, they will be enabled
automatically when the vehicle speed
reaches approximately 19 mph (30
km/h).

Temporarily disabling vehicle
height control

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4-5. Using the driving support systems

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■

When “Check Air Suspension System”

is displayed on the multi-information

display

The system may not operate properly. Have

the vehicle inspected by your Lexus dealer.

■

Customization

Some functions can be customized.

(

P.466)

■

ECB (Electronically Controlled
Brake System) (vehicles with Lexus
Safety System + A)

The electronically controlled system
generates braking force correspond-
ing to the brake operation

■

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.

■

Secondary Collision Brake

When the airbag sensor detects a colli-
sion, the brakes and stop lights are

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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4-5. Using the driving support systems

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Driving

automatically controlled to reduce the
vehicle speed and that helps reduce
the possibility of further damage due to
a secondary collision.

■

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

■

Hill-start assist control

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

■

VGRS (Variable Gear Ratio Steer-
ing) (if equipped)

Adjusts the front wheel turning angle in
accordance with the vehicle speed and
steering wheel movement

■

DRS (Dynamic Rear Steering) (if
equipped)

Contributes to the turning characteris-
tics and responsiveness of the vehicle
by adjusting the rear wheel angle of the
vehicle in accordance with steering
wheel movement.

■

EPS (Electric Power Steering)

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

■

Active stabilizer suspension sys-
tem (if equipped)

Reduces sway when cornering accord-
ing to steering wheel movement in
order to maintain a stable vehicle pos-
ture.

■

Adaptive Variable Suspension Sys-
tem (if equipped)

By independently controlling the
damping force of the shock absorbers
for each of the 4 wheels according to
the road and driving conditions, this
system helps riding comfort with supe-
rior vehicle stability, and helps good
vehicle posture.
Also, the damping force changes
depending on the selected driving
mode. (

P.289)

■

LDH (Lexus Dynamic Handling
system) (if equipped)

Provides integrated control of the
VGRS, DRS and EPS. Contributes to
turning characteristics at low speeds,
responsiveness at medium speeds and
safety at high speeds by controlling the
steering angle of the front and rear
wheels in accordance with the steering
wheel operation and vehicle speed.

■

VDIM (Vehicle Dynamics Inte-
grated Management)

Provides integrated control of the
ABS, brake assist, TRAC, VSC,
hill-start assist control, EPS, VGRS (if
equipped), DRS (if equipped), active
stabilizer suspension system (if
equipped) and Adaptive Variable Sus-
pension System (if equipped)
Helps to maintain vehicle stability when
swerving on slippery road surfaces by
controlling the brakes, engine output,
steering assist, and steering ratio

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4-5. Using the driving support systems

LS500_OM_(U)_1809

■

When the TRAC/VSC systems are

operating (vehicles without Lexus

Safety System + A)

The slip indicator light will flash while the

TRAC/VSC systems are operating.

■

When the TRAC/VSC/ABS systems are

operating (vehicles with Lexus Safety

System + A)

The slip indicator light will flash while the

TRAC/VSC/ABS 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 the

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.

■

Disabling both TRAC and VSC systems

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.

: On vehicles with PCS (Pre-Collision

System), PCS will also be disabled (only
Pre-Collision warning is available). The
PCS warning light will come on and a
message will be displayed on the
multi-information display. (

P.214,

222)

■

When the message is displayed on the

multi-information display showing that

TRAC has been disabled even if the

switch has not been pressed

TRAC cannot be operated. 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 position is in a position other

than P or N (when stating off for-

ward/backward on an upward incline)

●

The vehicle is stopped

●

The accelerator pedal is not depressed

●

The parking brake is not engaged

■

Automatic system cancelation of

hill-start assist control

The hill-start assist control will turn off in any

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4-5. Using the driving support systems

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Driving

of the following situations:

●

Shift the shift position 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

■

VGRS is disabled when

VGRS may stop operating in the following

situations.

In this event, the steering wheel may move

from its straight forward position, but it will

return when the system restarts.

●

When the steering wheel is operated for

an extended period of time while the

vehicle is stopped or is moving very

slowly (on vehicles with LDH, DRS is dis-

abled together with VGRS)

●

When the steering wheel has been held

fully to the left or right

The center position of the steering wheel

may change when VGRS is disabled. How-

ever, the position will return to normal after

VGRS is reactivated.

■

When the battery is disconnected (vehi-

cles with VGRS)

The steering wheel may move from its

straight forward position, but this will be

corrected automatically when driving.

■

Sounds and vibrations caused by the

ABS, brake assist, VSC, TRAC, hill-start

assist control and VGRS 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.

• Vehicles without Lexus Safety System +

A: The brake pedal may pulsate slightly

after the ABS is activated.

• Vehicles without Lexus Safety System +

A: The brake pedal may move down

slightly after the ABS is activated.

■

ECB operating sound

ECB operating sound may be heard in the

following cases, but it does not indicate that

a malfunction has occurred.

●

Operating sound heard from the engine

compartment when the brake pedal is

operated.

●

Motor sound of the brake system heard

from the front part of the vehicle when

the driver’s door is opened.

●

Operating sound heard from the engine

compartment when one or two minutes

passed after the stop of the engine.

■

EPS, VGRS and DRS operation sound

When the steering wheel is operated, a

motor sound (whirring sound) may be

heard. This does not indicate 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.

■

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.

■

Secondary Collision Brake operating

conditions

The vehicle speed is approximately 6 mph

298

4-5. Using the driving support systems

LS500_OM_(U)_1809

(10 km/h) or more and the airbag sensor

detects a collision. (The Secondary Colli-

sion Brake will not operate when the vehicle

speed is below approximately 6 mph [10

km/h].)

■

Secondary Collision Brake automatic

cancellation

The Secondary Collision Brake is automati-

cally canceled in the following situations:

●

The vehicle speed drops below approxi-

mately 6 mph (10 km/h)

●

A certain amount of time elapses during

operation

●

The accelerator pedal is depressed a

large amount

■

When “Check VGRS System” or

“CHECK DRS” is displayed on the

multi-information display

The VGRS or DRS may not operate prop-

erly. Have the vehicle inspected by your

Lexus dealer.

WARNING

■

The ABS does not operate effectively

when

●

The limits of tire gripping performance

have been exceeded (such as exces-

sively worn tires on a snow covered

road).

●

The vehicle hydroplanes while driving

at high speed on wet or slick roads.

■

Stopping distance when the ABS is

operating may exceed that of normal

conditions

The ABS is not designed to shorten the

vehicle’s stopping distance. Always main-

tain a safe distance from the vehicle in

front of you, especially in the following

situations:

●

When driving on dirt, gravel or

snow-covered roads

●

When driving with tire chains

●

When driving over bumps in the road

●

When driving over roads with potholes

or uneven surfaces

■

TRAC/VSC may not operate effec-

tively when

Directional control and power may not

be achievable while driving on slippery

road surfaces, even if the TRAC/VSC

system is operating. Drive the vehicle

carefully in conditions where stability and

power may be lost.

■

Hill-start assist control does not oper-

ate effectively when

●

Do not overly rely on hill-start assist

control. Hill-start assist control may

not operate effectively on steep

inclines and roads covered with ice.

●

Unlike the parking brake, hill-start

assist control is not intended to hold

the vehicle stationary for an extended

period of time. Do not attempt to use

hill-start assist control to hold the vehi-

cle on an incline, as doing so may lead

to an accident.

■

When the TRAC/VSC is activated

(vehicles without Lexus Safety Sys-

tem + A)

The slip indicator light flashes. Always

drive carefully. Reckless driving may

cause an accident. Exercise particular

care when the indicator light flashes.

■

When the TRAC/ABS/VSC is acti-

vated (vehicles with Lexus Safety Sys-

tem + A)

The slip indicator light flashes. Always

drive carefully. Reckless driving may

cause an accident. Exercise particular

care when the indicator light flashes.

■

When the TRAC/VSC systems are

turned off

Be especially careful and drive at a speed

appropriate to the road conditions. As

these are the systems to help ensure

vehicle stability and driving force, do not

turn the TRAC/VSC systems off unless

necessary.

299

4-5. Using the driving support systems

LS500_OM_(U)_1809

Driving

WARNING

■

Secondary Collision Brake

Do not overly rely on the Secondary Col-

lision Brake. This system is designed to

help reduce the possibility of further

damage due to a secondary collision,

however, that effect changes according

to various conditions. Overly relying on

the system may result in death or serious

injury.

■

Replacing tires

Make sure that all tires are of the speci-

fied size, brand, tread pattern and total

load capacity. In addition, make sure that

the tires are inflated to the recom-

mended tire inflation pressure level.
The ABS, TRAC and VSC systems will

not function correctly if different tires are

installed on the vehicle.

Contact your Lexus dealer for further

information when replacing tires or

wheels.

■

Handling of tires and the suspension

Using tires with any kind of problem or

modifying the suspension will affect the

driving assist systems, and may cause a

system to malfunction.

LEXUS LS 500 (2019 year). Instruction - part 18