LEXUS LS 500H (2019 year). Instruction - part 15

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■

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.
When the system determines 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
operating.

: Boundary between asphalt and the side

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

WARNING

●

The traffic lines are yellow (which may

be more difficult to recognize than

lines that are white).

●

The white (yellow) lines cross over a

curb, etc.

●

The vehicle is driven on a bright sur-

face, such as concrete.

●

If the edge of the road is not clear or

straight.

●

The vehicle is driven on a surface that

is bright due to reflected light, etc.

●

The vehicle is driven in an area where

the brightness changes suddenly, such

as at the entrances and exits of tunnels,

etc.

●

Light from the headlights of an oncom-

ing vehicle, the sun, etc. enters the

camera.

●

The vehicle is driven on a slope.

●

The vehicle is driven on a road which

tilts left or right, or a winding road.

●

The vehicle is driven on an unpaved or

rough road.

●

The traffic lane is excessively narrow

or wide.

●

The vehicle is extremely tilted due to

carrying heavy luggage or having

improper tire pressure.

●

The distance to the preceding vehicle

is extremely short.

●

The vehicle is moving up and down a

large amount due to road conditions

during driving (poor roads or road

seams).

●

When driving in a tunnel or at night

with the headlights off or when a head-

light is dim due to its lens being dirty or

it being misaligned.

●

The vehicle is struck by a crosswind.

●

The vehicle is affected by wind from a

vehicle driven in a nearby lane.

●

The vehicle has just changed lanes

through operation of the steering

wheel by the driver or crossed an

intersection.

●

Tires which differ by structure, manu-

facturer, brand or tread pattern are

used.

●

Snow tires, etc. are equipped.

●

The vehicle is being driven at

extremely high speeds.

Functions included in LTA system

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■

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.

If the system detects that the steering
wheel has not been operated for a fixed
amount of time or the steering wheel is not
being firmly gripped, the steering assist
function may be canceled temporarily, a
warning message may be displayed on the
multi-information display and a warning
buzzer may sound. If the steering assist
function is canceled, release the steering
wheel and then grip it again to enable the
function.
When the system determines that the vehi-
cle 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 operating.

: 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.

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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.
If the system detects that the steering
wheel has not been operated for a fixed
amount of time or the steering wheel is not
being firmly gripped, a warning is displayed
on the multi-information display and the
warning buzzer sounds. Make sure to grip
the steering wheel firmly.

■

Lane change assist function (vehi-
cles with Lexus Safety System + A)

This function is linked to the dynamic
radar cruise control with full-speed
range and provides assistance for per-
forming lane changes by operating the
steering wheel when you hold the turn
signal lever partway (lane change posi-
tion).(

P.182)

When lane change assist function is
operating, the acceleration and decel-
eration of the vehicle is controlled
while the preceding vehicle and vehi-
cles driven in the lane toward which the
turn signal is operated are monitored.

When the lane centering function is not
operating, the lane change assist function
will not operate.
The lane change assist function should not
be operated when changing lanes on a
road that is diverging or merging.

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Driving

Press the LTA switch to turn the LTA
system on.

The LTA indicator illuminates and a mes-
sage is displayed on the multi-information
display.
Press the LTA switch again to turn the LTA
system off.
When the LTA system is turned on or off,
operation of the LTA system continues in
the same condition the next time the hybrid
system is started.

■

Lane change assist function (vehi-
cles with Lexus Safety System + A)

Hold the turn signal lever partway
(lane change position) for approxi-
mately 1 second.(

P.182)

The direction you are signaling will be dis-
played on the multi-information display.

LTA indicator

The illumination condition of the indicator
informs the driver of the system operation
status.

Turning LTA system on

Indications on multi-information
display

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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 assist system
information screen.
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 assist system
information screen.



Inside of displayed white 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.



Inside of displayed white lines is
black

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

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 assist system
information screen.
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.

■

Lane change assist function (vehi-
cles with Lexus Safety System + A)

 Lane change assist display

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Driving

Indicates that steering wheel assist of the
lane change assist function is operating.

 Approaching vehicle warning dis-

play

Indicates that an approaching vehicle is
detected in the adjacent lane.

■

Warning display (vehicles with
Lexus Safety System + A)

When the lane centering function is oper-
ating and the system determines that the
vehicle may depart from its lane due to a
sharp curve, etc., a warning display urging
the driver to operate the steering wheel,
will be displayed.
This display will also be displayed when
operation of the lane change assist func-
tion is canceled.
In some situations a warning display may
not be displayed.

Some displays, which are the same as
those displayed on the multi-informa-
tion display, will be displayed.

■

LTA system curve display on the
head-up display

The curve display on the head-up display
changes according to the direction and
curvature of the curve.

■

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. (Except

when a vehicle is in the lane on the side

the turn signal was operated)

• Vehicle is not being driven around a

sharp curve.

• No system malfunctions are detected.

(

P.245)

: The function operates even if the vehi-

Indications on head-up display
(vehicles with Lexus Safety Sys-
tem + A)

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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.
• Setting for “Steering Assist” in

of the

multi-information display is set to “ON”.

(

P.90)

• 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.

• Hands off steering wheel warning is not

displayed. (

P.244)

●

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.90)

• 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.245)

●

Lane centering function

This function operates when all of the fol-
lowing conditions are met.
• LTA is turned on.

• Setting for “Steering Assist” and “Lane

Center” in

of the multi-information

display are set to “ON”. (

P.90)

• This function recognizes white (yellow)

lane lines or the position of a preceding

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.245)

• 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.244)

• The driver has one or both hands on the

steering wheel.

• The vehicle is being driven in the center

of a lane.

• Steering assist function is not operating.

●

Lane change assist function (vehicles with

Lexus Safety System + A)

This function will operate when all of the
following conditions are met:
• The lane centering function is operating.

• “Lane Change Assist” is set to “ON” in

of the multi-information dis-

play.(

P.90)

• The vehicle speed is between approxi-

mately 57 and 85 mph (90 and 140

km/h).

• White (yellow) lane lines are detected by

the system.

• A broken white line is detected between

your vehicle and the lane toward which

the turn signal is operated.

• The turn signal lever is held partway (lane

change position) for approximately 1 sec-

ond.

• A vehicle is not overtaking your vehicle

or detected in the lane toward which the

turn signal is operated.

• The vehicle is being driven straight or

around a slight curve.

• The vehicle is not accelerating or decel-

erating more than a certain amount.

• The steering wheel is not being turned

sufficiently to perform a lane change.

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• 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.244)

• The dynamic radar cruise control with

full-speed range approach warning is not

operating.

• The lane departure alert function is not

operating.

■

Temporary cancellation 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.241)

●

If the operation conditions (

P.241) 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.

●

If the operating conditions (

P.241) are

no longer met, the lane change assist

function will be canceled. (vehicles with

Lexus Safety System + A)

If a message urging operation of the steer-

ing wheel is displayed, operate the steering

wheel.

■

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

overrided by the driver’s steering wheel

operation.

●

When the vehicle speed is approximately

31 mph (50 km/h) or less, the warning

display of the lane centering function will

not operate.

●

Do not attempt to test the operation of

the steering assist function.

●

The steering assist function may operate

when attempting to cut closely in front of

another vehicle while changing lanes.

■

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.

●

It may not be possible for the system to

determine if there is a danger of a colli-

sion with a vehicle in an adjacent lane.

●

Do not attempt to test the operation of

the lane departure alert function.

●

This function may operate if, when chang-

ing lanes, your vehicle cuts closely in front

of another vehicle.

: Boundary between asphalt and the side

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

■

Lane change assist function (vehicles

with Lexus Safety System + A)

Depending on the vehicle speed, vehicle

condition, road conditions, or conditions of

the area around the vehicle, the lane

change assist function may not operate or it

may be difficult to recognize that it has

operated.
If steering control operation is excessive or

insufficient, it can be corrected by the

driver’s operation of the steering wheel.
In situations such as the following, the lane

change assist function may be canceled:

●

When the system no longer detects white

(yellow) lane lines

●

When the turn signal lever is operated

fully (right/left turn position)

●

When the vehicle speed is outside of the

operational range of the function

●

When the system detects operation of

the steering wheel, brake or accelerator

pedal by the driver

While the lane change assist function is

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operating, if the system detects that a vehi-

cle is quickly approaching in the lane

toward which the turn signal is operated,

the steering assist may slightly steer the

vehicle away from the lane while a buzzer is

sounding, the steering wheel is vibrating,

and a warning display is displayed on the

multi-information display, to help prevent

the vehicle from entering the lane and alert

the driver of the approaching vehicle.

■

Hands off steering wheel alert

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.
Depending on the vehicle condition and

road conditions, the warning may not oper-

ate. Also, if the system determines that the

vehicle is driving around a curve, warnings

will occur earlier than during straight-lane

driving.

●

When the system determines that the

driver is driving without holding the steer-

ing wheel while the system 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

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 not turn and instead depart

from its lane while driving around a curve

(vehicles with Lexus Safety System + 2.0)

●

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

(vehicles with Lexus Safety System + 2.0)

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

In situations such as the following, the sys-

tem may not be able to detect when the

driver’s hands are on the steering wheel

(vehicles with Lexus Safety System + A):

●

If a steering wheel cover is installed.

●

If the driver is wearing gloves.

●

If something is attached to the steering

wheel.

●

If the driver is gripping the wood trim,

stitched area, spokes, or other part of the

steering wheel that does not have sen-

sors.

In situations such as the following, the hands

off steering wheel alert may not operate

and the steering assist function and lane

centering function may operate even if the

driver’s hands are off the steering wheel

(vehicles with Lexus Safety System + A):

●

If an object contacts the steering wheel.

●

If a wide object or arms are held in front

of the steering wheel.

■

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.

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Driving

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 at 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.

(

P.479)

■

Meter display

Multi-information display
Set speed
Indicators

Dynamic radar cruise con-
trol with full-speed range

In vehicle-to-vehicle distance con-
trol mode, the vehicle automati-
cally accelerates, decelerates and
stops to match the speed changes
of the preceding vehicle even if the
accelerator pedal is not depressed.
In constant speed control mode,
the vehicle runs at a fixed speed.

Use the dynamic radar cruise con-
trol with full-speed range on free-
ways and highways.

 Vehicle-to-vehicle distance con-

trol mode (

P.248)

 Constant speed control mode

(

P.252)

System Components

A
B
C

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Operation switches

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

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 may not be correctly

detecting the vehicle ahead:

P.253

• Conditions under which the vehi-

cle-to-vehicle distance control mode

may not function correctly:

P.254

●

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.

A
B
C
D

●

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.

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WARNING

●

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.

●

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

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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.

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 a left lane while driving at
50 mph (80 km/h) or more, the vehicle will quickly accelerate to help to overtake a pass-
ing vehicle.

Example of acceleration

Driving in vehicle-to-vehicle distance control mode

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Driving

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.

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 control.
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.252)

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

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

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

Adjusting the set speed

250

4-5. Using the driving support systems

LS500h_OM_(U)_1809

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.252), 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”

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

Long

Medium

Short

The vehicle-to-vehicle distance is set auto-
matically to long mode when the power
switch is turned ON mode.
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.

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

251

4-5. Using the driving support systems

LS500h_OM_(U)_1809

Driving

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.

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.

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)

Distance

options

Vehicle-to-vehicle dis-

tance

Canceling and resuming the
speed control

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

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