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Lexus LS500 (2022 year). Manual in english - page 15

249

4-5. Using the driving support systems

LEXUS LS500 Owner's Manual

Driving

■

Lane departure alert function

When the system determines that the
vehicle might depart from its lane or
course

, a warning is displayed on the

multi-information display, and either a
warning buzzer will sound or the steer-
ing wheel will vibrate to alert the driver.

When the warning buzzer sounds or the
steering wheel vibrates, check the area
around your vehicle and carefully operate
the steering wheel to move the vehicle
back to the center of the lane.
Vehicle with BSM: When the system deter-
mines that the vehicle might depart from its
lane and that the possibility of a collision
with an overtaking vehicle in the adjacent
lane is high, the lane departure alert will
operate even if the turn signals are operat-
ing.

: Boundary between asphalt and the side

of the road, such as grass, soil, or a curb

■

Steering assist function

When the system determines that the
vehicle might depart from its lane or
course

, the system provides assis-

tance as necessary by operating the
steering wheel in small amounts for a
short period of time to keep the vehicle
in its lane.

Vehicle with BSM: When the system deter-
mines that the vehicle might depart from its
lane and that the possibility of a collision
with an overtaking vehicle in the adjacent
lane is high, the steering assist function will
operate even if the turn signals are operat-
ing.

: Boundary between asphalt and the side

of the road, such as grass, soil, or a curb

■

Vehicle sway warning function

When the vehicle is swaying within a
lane, the warning buzzer will sound and
a message will be displayed on the
multi-information display to alert the
driver.

Functions included in LTA system

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■

Lane centering function

This function is linked with dynamic
radar cruise control with full-speed
range and provides the required assis-
tance by operating the steering wheel
to keep the vehicle in its current lane.

When dynamic radar cruise control with
full-speed range is not operating, the lane
centering function does not operate.
In situations where the white (yellow) lane
lines are difficult to see or are not visible,
such as when in a traffic jam, this function
will operate to help follow a preceding
vehicle by monitoring the position of the
preceding vehicle.

■

Turning the LTA system on

Press the LTA switch.

When the LTA system will turn on, the LTA
indicator will illuminate and a message will
be displayed on the multi-information dis-
play.
Also, the lane centering function will
change between on/off each time the
switch is pressed.

Lane centering function off: “LTA Steering
Assist Active” is displayed.
Lane centering function on: “LTA Steering

LTA system setting

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Driving

Assist Active Lane centering Active” is dis-
played.
When the LTA system is turned on, opera-
tion of the LTA system continues in the
same condition the next time the engine is
started.

■

Turning the LTA system off

Press and hold the LTA switch.

The LTA indicator light turns off when the
LTA is turned off.
When the LTA system is turned off, opera-
tion of the LTA system continues in the
same condition the next time the engine is
started.

LTA indicator

The illumination condition of the indicator
informs the driver of the system operation
status.
Illuminated in white: LTA system is operat-
ing.
Illuminated in green: Steering wheel assis-
tance of the steering assist function or lane
centering function is operating.
Flashing in orange: Lane departure alert
function is operating.

Operation display of steering
wheel operation support

Displayed when the multi-information dis-
play is switched to the driving support sys-
tem information display.
Indicates that steering wheel assistance of
the steering assist function or lane center-
ing function is operating.
Both outer sides of the lane are displayed:
Indicates that steering wheel assist of the
lane centering function is operating.
One outer side of the lane is displayed:
Indicates that steering wheel assist of the
steering assist function is operating.
Both outer sides of the lane are flashing:
Alerts the driver that their input is neces-
sary to stay in the center of the lane (lane
centering function).

Lane departure alert function dis-
play

Displayed when the multi-information dis-
play is switched to the driving support sys-
tem information display.



Inside of displayed lines is white

Indicates that the system is recognizing
white (yellow) lines or a course

. When

the vehicle departs from its lane, the
white line displayed on the side the
vehicle departs from flashes orange.

Indications on multi-information
display

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4-5. Using the driving support systems

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

Inside of displayed lines is black

Indicates that the system is not able to
recognize white (yellow) lines or a
course

or is temporarily canceled.

: Boundary between asphalt and the side

of the road, such as grass, soil, or a curb

Follow-up cruising display

Displayed when the multi-information dis-
play is switched to the driving support sys-
tem information display.
Indicates that steering assist of the lane
centering function is operating by monitor-
ing the position of a preceding vehicle.
When the follow-up cruising display is dis-
played, if the preceding vehicle moves,
your vehicle may move in the same way.
Always pay careful attention to your sur-
roundings and operate the steering wheel
as necessary to correct the path of the
vehicle and ensure safety.

■

Operation conditions of each function

●

Lane departure alert function

This function operates when all of the fol-

lowing conditions are met.

• LTA is turned on.

• Vehicle speed is approximately 32 mph

(50 km/h) or more.

• System recognizes white (yellow) lane

lines or a course

. (When a white [yel-

low] line or course

is recognized on

only one side, the system will operate

only for the recognized side.)

• Width of traffic lane is approximately 9.8

ft. (3 m) or more.

• Turn signal lever is not operated. (Vehicle

with BSM: Except when another vehicle

is in the lane on the side where the turn

signal was operated)

• Vehicle is not being driven around a

sharp curve.

• No system malfunctions are detected.

(



P.254)

: The function operates even if the vehi-

cle speed is less than approximately 32
mph (50 km/h) when the lane center-
ing function is operating.

: Boundary between asphalt and the side

of the road, such as grass, soil, or a curb

●

Steering assist function

This function operates when all of the fol-

lowing conditions are met in addition to the

operation conditions for the lane depar-

ture alert function.

• Vehicle is not accelerated or decelerated

by a fixed amount or more.

• Steering wheel is not operated with a

steering force level suitable for changing

lanes.

• ABS, VSC, TRAC and PCS are not oper-

ating.

• TRAC or VSC is not turned off.

●

Vehicle sway warning function

This function operates when all of the fol-

lowing conditions are met.
• Setting for “Sway Warning” in

of the

multi-information display is set to “ON”.

(



P.77)

• Vehicle speed is approximately 32 mph

(50 km/h) or more.

• Width of traffic lane is approximately 9.8

ft. (3 m) or more.

• No system malfunctions are detected.

(



P.254)

●

Lane centering function

This function operates when all of the fol-

lowing conditions are met.

• LTA is turned on.
• Setting for “Lane Center” in

of the

multi-information display is set to “ON”.

(



P.77)

• This function recognizes white (yellow)

lane lines or the position of a preceding

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LEXUS LS500 Owner's Manual

Driving

vehicle (except when the preceding vehi-

cle is small, such as a motorcycle).

• The dynamic radar cruise control with

full-speed range is operating in vehi-

cle-to-vehicle distance control mode.

• Width of traffic lane is approximately 10

to 13 ft. (3 to 4 m).

• Turn signal lever is not operated.

• Vehicle is not being driven around a

sharp curve.

• No system malfunctions are detected.

(



P.254)

• Vehicle does not accelerate or deceler-

ate by a fixed amount or more.

• Steering wheel is not operated with a

steering force level suitable for changing

lanes.

• ABS, VSC, TRAC and PCS are not oper-

ating.

• TRAC or VSC is not turned off.

• Hands off steering wheel warning is not

displayed. (



P.253)

• The vehicle is being driven in the center

of a lane.

• Steering assist function is not operating.

■

Temporary cancelation of functions

●

When operation conditions are no longer

met, a function may be temporarily can-

celed. However, when the operation con-

ditions are met again, operation of the

function is automatically restored.

(



P.252)

●

If the operation conditions (



P.252) are

no longer met while the lane centering

function is operating, the steering wheel

may vibrate and the buzzer may sound to

indicate that the function has been tem-

porarily canceled. However, if the “Alert”
customization setting is set to

the system will notify the driver by vibrat-

ing the steering wheel instead of sound-

ing the buzzer.

■

Steering assist function/lane centering

function

●

Depending on the vehicle speed, lane

departure situation, road conditions, etc.,

the driver may not feel the function is

operating or the function may not oper-

ate at all.

●

The steering control of the function is

overridden by the driver’s steering wheel

operation.

●

Do not attempt to test the operation of

the steering assist function.

■

Lane departure alert function

●

The warning buzzer may be difficult to

hear due to external noise, audio play-

back, etc. Also, it may be difficult to feel

steering wheel vibrations due to the road

conditions, etc.

●

If the edge of the course

is not clear or

straight, the lane departure alert function

may not operate.

●

Vehicle with BSM: It may not be possible

for the system to determine if there is a

danger of a collision with a vehicle in an

adjacent lane.

●

Do not attempt to test the operation of

the lane departure alert function.

: Boundary between asphalt and the side

of the road, such as grass, soil, or a curb

■

Hands off steering wheel warning

In the following situations, a warning mes-

sage urging the driver to hold the steering

wheel and the symbol shown in the illustra-

tion are displayed on the multi-information

display to warn the driver. The warning

stops when the system determines that the

driver holds the steering wheel. Always

keep your hands on the steering wheel

when using this system, regardless of warn-

ings.

●

When the system determines the driver is

not holding the steering wheel while the

lane centering function is operating.

If the driver continues to keep their hands
off of the steering wheel, the buzzer
sounds, the driver is warned and the func-
tion is temporarily canceled. This warning
also operates in the same way when the

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4-5. Using the driving support systems

LEXUS LS500 Owner's Manual

driver continuously operates the steering
wheel only a small amount.
The buzzer also sounds even if the alert
type is set to

●

When the system determines that the

vehicle may deviate from the lane while

driving around a curve while the lane

centering function is operating.

●

When the system determines that the

driver is driving without holding the steer-

ing wheel while the steering wheel assist

of the steering assist function is operating

If the driver continues to keep their hands
off of the steering wheel and the steering
wheel assist is operating, the buzzer
sounds and the driver is warned. Each time
the buzzer sounds, the continuing time of
the buzzer becomes longer.
The buzzer also sounds even if the alert
type is set to

■

Vehicle sway warning function

When the system determines that the vehi-

cle is swaying while the vehicle sway warn-

ing function is operating, a buzzer sounds

and a warning message urging the driver to

rest and the symbol shown in the illustration

are simultaneously displayed on the

multi-information display.

Depending on the vehicle and road condi-

tions, the warning may not operate.

■

Warning message

If the following warning message is dis-

played on the multi-information display and

the LTA indicator illuminates in orange, fol-

low the appropriate troubleshooting proce-

dure. Also, if a different warning message is

displayed, follow the instructions displayed

on the screen.

●

“LTA Malfunction Visit Your Dealer”

The system may not be operating properly.

Have the vehicle inspected by your Lexus

dealer.

●

“LTA Unavailable”

The system is temporarily canceled due to

a malfunction in a sensor other than the

front camera. Turn the LTA system off, wait

for a little while, and then turn the LTA sys-

tem back on.

●

“LTA Unavailable at Current Speed”

The function cannot be used as the vehicle

speed exceeds the LTA operation range.

Drive slower.

■

Customization

Function settings can be changed. (Cus-

tomizable features:



P.474)

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4-5. Using the driving support systems

LEXUS LS500 Owner's Manual

Driving

: If equipped

The RSA system recognizes specific
road signs using the front camera
and/or navigation system (when speed
limit information is available) to provide
information to the driver via the display.

If the system judges that the vehicle is
being driven over the speed limit, per-
forming prohibited actions, etc.
according to the recognized road
signs, it notifies the driver through a
visual notification and notification
buzzer.

When the front camera recognizes a

sign and/or information of a sign is
available from the navigation system,
the sign will be displayed on the
multi-information display.



When the Driving support system
information display is selected, a
maximum of 3 signs can be dis-
played. (



P.77)



When a tab other than the Driving
support system information display
is selected, the following types of
road signs will be displayed.
(



P.77)

• Speed limit sign
• Do Not Enter sign (when notification is

necessary)

If signs other than speed limit signs are rec-
ognized, they will be displayed in an over-
lapping stack under the current speed limit
sign.

RSA (Road Sign Assist)

Summary of function

WARNING

■

Before using the RSA

Do not rely solely upon the RSA system.

RSA is a system which supports the

driver by providing information, but it is

not a replacement for a driver’s own

vision and awareness. Drive safely by

always paying careful attention to the

traffic rules.

Indication on the multi-informa-
tion display

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4-5. Using the driving support systems

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The following types of road signs,
including electronic signs and blinking
signs, are recognized.

A non-official or a recently introduced traf-
fic sign may not be recognized.

In the following situations, the RSA sys-
tem will notify the driver.



When the vehicle speed exceeds
the speed notification threshold of
the speed limit sign displayed, the
sign display will be emphasized and
a buzzer will sound.



When the RSA system recognizes a
do not enter sign and determines
that your vehicle has entered a
no-entry area, the displayed sign will
flash and a buzzer will sound.

Depending on the situation, a notifica-
tion function may not operate properly.

■

Setting procedure

Press

of the meter control

switches and select

Press

of the meter control

switches and select “Vehicle Settings”,
then press

Press

of the meter control

switches and select

, then press

Press

of the meter control

switches and select “RSA”, then press

■

Automatic turn-off of RSA sign display

In the following situations, a displayed

speed limit sign and/or do not enter sign will

stop being displayed automatically:

●

No sign has been recognized for a cer-

tain distance.

●

The road changes due to a left or right

turn, etc.

In the following situations, stop and yield

signs will stop being displayed automati-

cally:

●

The system determines that your vehicle

has passed the sign.

●

The road changes due to a left or right

turn, etc.

■

Conditions in which the function may

not operate or detect correctly

In the following situations, RSA does not

operate normally and may not recognize

signs, display the incorrect sign, etc. How-

ever, this does not indicate a malfunction.

●

The front camera is misaligned due to a

strong impact being applied to the sen-

sor, etc.

●

Dirt, snow, stickers, etc. are on the wind-

shield near the front camera.

●

In inclement weather such as heavy rain,

fog, snow or sand storms.

●

Light from an oncoming vehicle, the sun,

etc. enters the front camera.

Supported types of road signs

Speed limit

US Night speed limit

Do Not Enter

Stop

Yield

Notification function

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4-5. Using the driving support systems

LEXUS LS500 Owner's Manual

Driving

●

The sign is dirty, faded, tilted or bent.

●

The contrast of electronic sign is low.

●

All or part of the sign is hidden by the

leaves of a tree, a pole, etc.

●

The sign is only visible to the front camera

for a short amount of time.

●

The driving scene (turning, lane change,

etc.) is judged incorrectly.

●

If a sign not appropriate for the currently

traveled lane, but the sign exists directly

after a freeway branches, or in an adja-

cent lane just before merging.

●

Stickers are attached to the rear of the

preceding vehicle.

●

A sign resembling a system compatible

sign is recognized.

●

Side road speed signs may be detected

and displayed (if positioned in sight of the

front camera) while the vehicle is travel-

ing on the main road.

●

Roundabout exit road speed signs may

be detected and displayed (if positioned

in sight of the front camera) while travel-

ing on a roundabout.

●

The front of the vehicle is raised or low-

ered due to the carried load.

●

The surrounding brightness is not suffi-

cient or changes suddenly.

●

When a sign intended for trucks, etc. is

recognized.

●

The navigation system map data is out-

dated.

●

The navigation system is not operating.

●

The speed information displayed on the

meter and on the navigation system may

be different due to the navigation system

using map data.

■

Speed limit sign display

If the engine switch was last turned off while

a speed limit sign was displayed on the

multi-information display, the same sign dis-

plays again when the engine switch is

turned to IGNITION ON mode.

■

If “RSA Malfunction Visit Your Dealer”

is shown

The system may be malfunctioning. Have

the vehicle inspected by your Lexus dealer.

■

Customization

Some functions can be customized. (Cus-

tomizable features:



P.474)

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In vehicle-to-vehicle distance control
mode, the vehicle automatically accel-
erates, decelerates and stops to match
the speed changes of the preceding
vehicle even if the accelerator pedal is
not depressed. In constant speed con-
trol mode, the vehicle runs at a fixed
speed.
Use the dynamic radar cruise control
with full-speed range on freeways and
highways.



Vehicle-to-vehicle distance control
mode (



P.260)



Constant speed control mode
(



P.265)

■

Meter display

Multi-information display
Set speed
Indicators

■

Operation switches

Vehicle-to-vehicle distance switch
“+RES” switch
Cruise control main switch
Cancel switch
“-SET” switch

Dynamic radar cruise con-
trol with full-speed range

Summary of functions

System Components

WARNING

■

Before using dynamic radar cruise

control with full-speed range

●

Driving safely is the sole responsibility

of the driver. Do not rely solely on the

system, and drive safely by always pay-

ing careful attention to your surround-

ings.

●

The dynamic radar cruise control with

full-speed range provides driving

assistance to reduce the driver’s bur-

den. However, there are limitations to

the assistance provided.

Read the following conditions care-

fully. Do not overly rely on this system

and always drive carefully.

• When the sensor ma

y not be correctly

detecting the vehicle ahead:



P.267

• Conditions under which the vehi-

cle-to-vehicle distance control mode

may not function correctly:



P.267

●

Set the speed appropriately depend-

ing on the speed limit, traffic flow, road

conditions, weather conditions, etc.

The driver is responsible for checking

the set speed.

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Driving

WARNING

●

Even when the system is functioning

normally, the condition of the preced-

ing vehicle as detected by the system

may differ from the condition

observed by the driver. Therefore, the

driver must always remain alert, assess

the danger of each situation and drive

safely. Relying solely on this system or

assuming the system ensures safety

while driving can lead to an accident,

resulting in death or serious injury.

●

Switch the dynamic radar cruise con-

trol with full-speed range setting to off,

using the cruise control main switch

when not in use.

■

Cautions regarding the driving assist

systems

Observe the following precautions, as

there are limitations to the assistance

provided by the system. Failure to do so

may cause an accident resulting in death

or serious injury.

●

Assisting the driver to measure follow-

ing distance

The dynamic radar cruise control with

full-speed range is only intended to help

the driver in determining the following

distance between the driver’s own vehi-

cle and a designated vehicle traveling

ahead. It is not a mechanism that allows

careless or inattentive driving, and it is

not a system that can assist the driver in

low-visibility conditions.

It is still necessary for driver to pay close

attention to the vehicle’s surroundings.

●

Assisting the driver to judge proper

following distance

The dynamic radar cruise control with

full-speed range determines whether the

following distance between the driver’s

own vehicle and a designated vehicle

traveling ahead is within a set range. It is

not capable of making any other type of

judgement. Therefore, it is absolutely

necessary for the driver to remain vigi-

lant and to determine whether or not

there is a possibility of danger in any

given situation.

●

Assisting the driver to operate the

vehicle

The dynamic radar cruise control with

full-speed range does not include func-

tions which will prevent or avoid colli-

sions with vehicles ahead of your vehicle.

Therefore, if there is ever any possibility

of danger, the driver must take immedi-

ate and direct control of the vehicle and

act appropriately in order to ensure the

safety of all involved.

■

Situations unsuitable for dynamic

radar cruise control with full-speed

range

Do not use dynamic radar cruise control

with full-speed range in any of the follow-

ing situations. Doing so may result in

inappropriate speed control and could

cause an accident resulting in death or

serious injury.

●

Roads where there are pedestrians,

cyclists, etc.

●

In heavy traffic

●

On roads with sharp bends

●

On winding roads

●

On slippery roads, such as those cov-

ered with rain, ice or snow

●

On steep downhills, or where there

are sudden changes between sharp up

and down gradients

Vehicle speed may exceed the set

speed when driving down a steep hill.

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4-5. Using the driving support systems

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This mode employs a radar to detect the presence of vehicles up to approximately
328 ft. (100 m) ahead, determines the current vehicle-to-vehicle following dis-
tance, and operates to maintain a suitable following distance from the vehicle
ahead. The desired vehicle-to-vehicle distance can also be set by operating the
vehicle-to-vehicle distance switch.

When driving on downhill slopes, the vehicle-to-vehicle distance may become shorter.

Example of constant speed cruising
When there are no vehicles ahead

The vehicle travels at the speed set by the driver.

WARNING

●

At entrances to freeways and highways

●

When weather conditions are bad

enough that they may prevent the sen-

sors from detecting correctly (fog,

snow, sandstorm, heavy rain, etc.)

●

When there is rain, snow, etc. on the

front surface of the radar or front cam-

era

●

In traffic conditions that require fre-

quent repeated acceleration and

deceleration

●

During emergency towing

●

When an approach warning buzzer is

heard often

Driving in vehicle-to-vehicle distance control mode

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Driving

Example of deceleration cruising and follow-up cruising
When a preceding vehicle driving slower than the set speed appears

When a vehicle is detected running ahead of you, the system automatically decelerates
your vehicle. When a greater reduction in vehicle speed is necessary, the system applies
the brakes (the stop lights will come on at this time). The system will respond to changes in
the speed of the vehicle ahead in order to maintain the vehicle-to-vehicle distance set by
the driver. Approach warning warns you when the system cannot decelerate sufficiently to
prevent your vehicle from closing in on the vehicle ahead.
When the vehicle ahead of you stops, your vehicle will also stop (vehicle is stopped by sys-
tem control). After the vehicle ahead starts off, pressing the “+RES” switch or depressing
the accelerator pedal (start-off operation) will resume follow-up cruising. If the start-off
operation is not performed, system control continues to keep your vehicle stopped.
When the turn signal lever is operated and your vehicle moves to an overtaking lane while
driving at 50 mph (80 km/h) or more, the vehicle will accelerate to help to overtake a
passing vehicle.
The system’s identification of what is an overtaking lane may be determined solely based on
the location of the steering wheel in the vehicle (left side driver position versus right side
driver position.) If the vehicle is driven to a region where the overtaking lane is on a different
side from where the vehicle is normally driven, the vehicle may accelerate when the turn
signal lever is operated in the opposite direction to the overtaking lane (e.g., if the driver
normally operates the vehicle in a region where the overtaking lane is to the right but then
drives to a region where the overtaking lane is to the left, the vehicle may accelerate when
the right turn signal is activated).

Example of acceleration
When there are no longer any preceding vehicles driving slower than the set
speed

The system accelerates until the set speed is reached. The system then returns to constant
speed cruising.

Press the cruise control main switch
to activate the cruise control.

Dynamic radar cruise control indicator will

come on and a message will be displayed

on the multi-information display. Press the

switch again to deactivate the cruise con-

trol.
If the cruise control main switch is pressed

and held for 1.5 seconds or more, the sys-

tem turns on in constant speed control

mode. (



P.265)

Accelerate or decelerate, with
accelerator pedal operation, to the
desired vehicle speed (at or above

Setting the vehicle speed (vehi-
cle-to-vehicle distance control
mode)

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4-5. Using the driving support systems

LEXUS LS500 Owner's Manual

approximately 20 mph [30 km/h])
and press the “-SET” switch to set
the speed.

Cruise control “SET” indicator will come

on.
The vehicle speed at the moment the

switch is released becomes the set speed.



Adjusting the set speed by the
switch

To change the set speed, press the
“+RES” or “-SET” switch until the
desired set speed is displayed.

Increases the speed (Except when
the vehicle has been stopped by
system control in vehicle-to-vehi-
cle distance control mode)

Decreases the speed

Fine adjustment: Press the switch.
Large adjustment: Press and hold the
switch to change the speed, and release

when the desired speed is reached.

In the vehicle-to-vehicle distance con-
trol mode, the set speed will be
increased or decreased as follows:
• For the U.S. mainland, Hawaii

Fine adjustment: By 1 mph (1.6 km/h)

or 1

km/h (0.6mph)

each time the switch is

pressed
Large adjustment: Increases or decreases
in 1mph (1.6 km/h)

or 1 km/h (0.6 mph)

increments for as long as the switch is held

• For Canada, Guam and Puerto Rico

Fine adjustment: By 1 mph (1.6 km/h)

or 1

km/h (0.6mph)

each time the switch is

pressed
Large adjustment: Increases or decreases
in 5 mph (8 km/h)

or 5 km/h (3.1 mph)

increments for as long as the switch is held

In the constant speed control mode
(



P.265), the set speed will be

increased or decreased as follows:

Fine adjustment: By 1 mph (1.6 km/h)

or 1

km/h (0.6 mph)

each time the switch is

pressed
Large adjustment: The speed will continue
to change while the switch is held.

: When the set speed is shown in “MPH”

: When the set speed is shown in “km/h”



Increasing the set speed by the
accelerator pedal

Accelerate with accelerator pedal
operation to the desired vehicle
speed

Press the “-SET” switch

Adjusting the set speed

263

4-5. Using the driving support systems

LEXUS LS500 Owner's Manual

Driving

Pressing the switch changes the vehi-
cle-to-vehicle distance as follows:

Long

Medium

Short

If a vehicle is running ahead of you, the pre-
ceding vehicle mark

will also be dis-

played.

Select a distance from the table below.
Note that the distances shown corre-
spond to a vehicle speed of 50 mph
(80 km/h). Vehicle-to-vehicle distance
increases/decreases in accordance
with vehicle speed. When the vehicle is
stopped by system control, the vehicle
stops at a certain vehicle-to-vehicle
distance depending on the situation.

After the vehicle ahead of you starts
off, press the “+RES” switch.
Your vehicle will also resume follow-up
cruising if the accelerator pedal is
depressed after the vehicle ahead of
you starts off.

Changing the vehicle-to-vehicle
distance (vehicle-to-vehicle dis-
tance control mode)

Vehicle-to-vehicle distance set-
tings (vehicle-to-vehicle dis-
tance control mode)

Distance

options

Vehicle-to-vehicle dis-

tance

Long

Approximately 160 ft. (50

Medium

Approximately 130 ft. (40

Short

Approximately 100 ft. (30

Resuming follow-up cruising
when the vehicle has been
stopped by system control (vehi-
cle-to-vehicle distance control
mode)

264

4-5. Using the driving support systems

LEXUS LS500 Owner's Manual

Pressing the cancel switch cancels
the speed control.

The speed control is also canceled when
the brake pedal is depressed. (When the
vehicle has been stopped by system con-
trol, depressing the brake pedal does not
cancel the setting.)

Pressing the “+RES” switch
resumes the cruise control and
returns vehicle speed to the set
speed.

When your vehicle is too close to a
vehicle ahead, and sufficient automatic
deceleration via the cruise control is
not possible, the display will flash and
the buzzer will sound to alert the driver.
An example of this would be if another
driver cuts in front of you while you are
following a vehicle. Depress the brake
pedal to ensure an appropriate vehi-
cle-to-vehicle distance.

■

Warnings may not occur when

In the following instances, warnings
may not occur even when the vehi-
cle-to-vehicle distance is small.



When the speed of the preceding
vehicle matches or exceeds your
vehicle speed



When the preceding vehicle is trav-
eling at an extremely slow speed



Immediately after the cruise control
speed was set



When depressing the accelerator
pedal

While driving in vehicle-to-vehicle dis-
tance control mode, this function will
reduce the vehicle speed, if it is deter-
mined to be necessary.

■

Function operation

When the steering wheel begins to be
turned, the vehicle speed will begin
being reduced. When the steering
wheel is returned to the center posi-
tion, the vehicle speed reduction will
end.
Depending on the situation, the vehicle
speed will then return to the vehi-

Canceling and resuming the
speed control

Approach warning (vehi-
cle-to-vehicle distance control
mode)

Curve speed reduction function

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