Lexus LC Cabriolet (2021 year). Manual in english

243

4-5. Using the driving support systems

ivin
g

Press the LKA switch to turn the LKA
system on.

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

LKA indicator

The illumination condition of the indicator
informs the driver of the system operation
status.
Illuminated in white:
LKA system is operating.
Illuminated in green:
Steering wheel assistance 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

Indicates that steering wheel assistance of
the steering assist function or lane center-
ing function is operating.

Lane departure alert function dis-
play

Displayed when the multi-information dis-
play is switched to the driving assist system
information screen.

WARNING

Do not modify the suspension etc. If

the suspension etc. needs to be

replaced, contact any authorized

Lexus retailer or Lexus authorized

repairer, or any reliable repairer.

Do not install or place anything on the

hood or grille. Also, do not install a

grille guard (bull bars, kangaroo bar,

etc.).

If your windshield needs repairs, con-

tact any authorized Lexus retailer or

Lexus authorized repairer, or any reli-

able repairer.

Turning LKA system on

Indications on multi-information
display

244

4-5. Using the driving support systems



Inside of displayed white lines is
white

Indicates that the system is recognizing
white (yellow) lines. When the vehicle
departs from its lane, the white line dis-
played on the side the vehicle departs
from flashes orange.



Inside of displayed white lines is
black

Indicates that the system is not able to
recognize white (yellow) lines or is
temporarily canceled.

Operation conditions of each function

Lane departure alert function

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

• Vehicle speed is approximately 50 km/h

(32 mph) or more.

• System recognizes white (yellow) lines.

• Width of traffic lane is approximately 3 m

(9.8 ft.) or more.

• Turn signal lever is not operated.

• Vehicle is driven on a straight road or

around a gentle curve with a radius of

more than approximately 150 m (492

ft.).

• No system malfunctions are detected.

(



P.246)

Steering assist function

This function operates when all of the fol-
lowing conditions are met in addition to the
operation conditions for the lane departure
alert function.
• Setting for “Steering Assist” in

of the

multi-information display is set to “On”.

(



P.93)

• Vehicle is not accelerated or decelerated

by a certain amount or more.

• Steering wheel is not operated with a

steering force level suitable for changing

lanes.

• ABS, VSC, TRC and PCS are not oper-

ating.

• TRC or VSC is not turned off.

• Hands off steering wheel warning is not

displayed. (



P.245)

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.93)

• Vehicle speed is approximately 50 km/h

(32 mph) or more.

• Width of traffic lane is approximately 3 m

(9.8 ft.) or more.

• No system malfunctions are detected.

(



P.246)

Lane centering function

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

• Setting for “Steering Assist” and “Lane

Center” in

of the multi-information

display are set to “On”. (



P.93)

• System recognizes white (yellow) lines.

• Dynamic radar cruise control with full-

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4-5. Using the driving support systems

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speed range is operating.

• Width of traffic lane is approximately 2.5

to 4.1 m (8.2 to 13.5 ft.).

• Turn signal lever is not operated.

• Vehicle is driven on a straight road or

around a gentle curve with a radius of

more than approximately 200 m (656

ft.).

• No system malfunctions are detected.

(



P.246)

• Vehicle does not accelerate or deceler-

ate by a certain amount or more.

• Steering wheel is not operated with a

steering force level suitable for changing

lanes.

• ABS, VSC, TRC and PCS are not oper-

ating.

• TRC or VSC is not turned off.

• Hands off steering wheel warning is not

displayed. (



P.245)

• Steering assist function is not operating.

Temporary cancellation of functions

When the operation conditions are no lon-

ger met, a function may be temporarily can-

celed. However, when the operation

conditions are met again, operation of the

function is automatically restored.

(



P.244)

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 oper-

ating or the function may not operate at all.

Lane departure alert function

The warning buzzer may be difficult to hear

due to external noise, audio playback, etc.

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 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 function is tem-
porarily canceled. This warning also oper-
ates in the same way when the driver
continuously operates the steering wheel
only a small amount.
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 steering wheel assist

of the steering assist function is operat-

ing.

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.

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.

246

4-5. Using the driving support systems

Depending on the vehicle and road condi-

tions, the warning may not operate.

White (yellow) lines are only on one side

of road

The LKA system will not operate for the

side on which white (yellow) lines could not

be recognized.

Conditions in which functions may not

operate properly

In the following situations, the front camera

may not detect white (yellow) lines and vari-

ous functions may not operate normally.

There are shadows on the road that run

parallel with, or cover, the white (yellow)

lines.

The vehicle is driven in an area without

white (yellow) lines, such as in front of a

tollgate or checkpoint, or at an intersec-

tion, etc.

The white (yellow) lines are cracked,

“Raised pavement marker” or stones are

present.

The white (yellow) lines cannot be seen

or are difficult to see due to sand, etc.

The vehicle is driven on a road surface

that is wet due to rain, puddles, etc.

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 surface,

such as concrete.

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 oncoming

vehicle, the sun, etc. enters the camera.

The vehicle is driven where the road

diverges, merges, etc.

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 vehicle is driven around a sharp

curve.

The traffic lane is excessively narrow or

wide.

The vehicle is extremely tilted due to car-

rying 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).

The headlight lenses are dirty and emit a

faint amount of light at night, or the beam

axis has deviated.

The vehicle is struck by a crosswind.

The vehicle has just changed lanes or

crossed an intersection.

Snow tires, etc. are equipped.

Warning message

If the following warning message is dis-

played on the multi-information display and

the LKA indicator illuminates in orange, fol-

low the appropriate troubleshooting proce-

dure.

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4-5. Using the driving support systems

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If a different warning message is displayed,

follow the instructions displayed on the

screen.

Customization

The following settings can be changed.

Warning
message

Details/Actions

“Lane Keep-

ing Assist

Malfunction

Visit Your

Dealer”

The system may not be
operating properly.



Have the vehicle

inspected any authorized
Lexus retailer or Lexus
authorized repairer, or
any reliable repairer.

“Front Cam-

era Vision

Blocked

Clean and

Demist Wind-

shield”

Dirt, rain, condensation,
ice, snow, etc. are present
on the windshield in front
of the front camera.



Turn the LKA system

off, remove any dirt, rain,
condensation, ice, snow,
etc. from the windshield,
and then turn the LKA sys-
tem back on.

“Front Cam-

era Unavail-

able”

The operation conditions
of the front camera (tem-
perature, etc.) are not
met.



When the operation

conditions of the front
camera (temperature,
etc.) are met, the LKA sys-
tem will become avail-
able. Turn the LKA system
off, wait for a little while,
and then turn the LKA sys-
tem back on.

“Lane Keep-

ing Assist

Unavailable”

The LKA system is tempo-
rarily canceled due to a
malfunction in a sensor
other than the front cam-
era.



Turn the LKA system

off and follow the appro-
priate troubleshooting
procedures for warning
message. Afterward,
drive the vehicle for a
short time, and then turn
the LKA system back on.

“Lane Keep-

ing Assist

Unavailable

Below

Approx

50km/h”

The LKA system cannot
be used as the vehicle
speed is less than approxi-
mately 50 km/h (32
mph).



Drive the vehicle at

approximately 50 km/h
(32 mph) or more.

“Lane Keep-

ing Assist

Unavailable

at Current

Speed”

The LKA system cannot
be used as the vehicle
speed is too high.



Slow down.

Function

Setting details

Lane depar-

ture alert

function

Adjust alert sensitivity

Steering

assist function

Turn steering wheel assis-

tance on and off

Warning
message

Details/Actions

248

4-5. Using the driving support systems

For how to change settings, refer to P.435.

: If equipped

Vehicle sway

warning func-

tion

Turn function on and off

Adjust alert sensitivity

Lane center-

ing function

Turn function on and off

Function

Setting details

RSA (Road Sign Assist)

RSA recognizes specific road signs
using the front camera

and pro-

vides information to the driver via
the multi-information display.

If the system judges that the vehicle
is being driven over the speed limit,
performing prohibited actions, etc.
in relation to the recognized road
signs, it alerts the driver using a
warning display and warning
buzzer

: This setting needs to be customized.

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.
Inappropriate or negligent driving could

lead to an unexpected accident.

249

4-5. Using the driving support systems

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After the front camera recognizes a
sign, it is displayed on the multi-infor-
mation display when the vehicle passes
the sign.



When the driving assist system
information is selected, a maximum
of 3 signs can be displayed.
(



P.93)



When other than the driving assist
system information is selected, a
speed limit sign or an all canceled
sign can be displayed. (



P.93)

A no overtaking sign and a speed limit sign
with supplemental mark are not displayed.
However, if signs other than speed limit
signs are recognized, they are mentioned
in a stack under the current speed limit
sign.

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

A non-official (not meeting the Vienna Convention) or a recently introduced traffic sign
may not be recognized.

Indication on the multi-informa-
tion display

Types of recognized road signs

Type

Multi-information display

Speed limit begins/ends

250

4-5. Using the driving support systems

: If the turn signal indicator is not operated when changing lanes, the mark does not dis-

play.

: For vehicles with navigation system

In the following situations, the RSA sys-
tem alerts the driver using a warning
display.



When the vehicle speed exceeds
the speed warning threshold
applied to the speed limit of the sign
displayed on the multi-information

display, the sign color becomes
inverted.



If it is detected that your vehicle is
overtaking when a no overtaking
sign is displayed on the multi-infor-
mation display, the sign flashes.



Vehicles with navigation system:
When the RSA system recognizes a
no-entry sign and detects that the

Speed limit with supple-
mental mark (Displayed

simultaneously with

speed limit)

(Display example)

Wet

Rain

Ice

On/off ramp

Supplemental mark

exists

(Contents not recog-

nized)

No overtaking begins/ends

No-entry

All canceled

(All restrictions canceled. Returns to default road

regulation.)

Type

Multi-information display

Warning display

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4-5. Using the driving support systems

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vehicle has entered a no-entry area
based on the map information of the
navigation system, the no-entry sign
flashes.

Depending on the situation, traffic
environment (traffic direction, speed
unit) may be detected incorrectly and a
warning display may not operate prop-
erly.

Automatic turn-off of RSA sign display

One or more signs automatically turn off in

the following situations.

A new sign is not recognized for a certain

distance.

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.

The sign is dirty, faded, tilted or bent, and

if an electronic sign, the contrast is poor.

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.

Even if it is a sign not appropriate for the

currently traveled lane, such a sign exists

directly after a freeway branches, or in an

adjacent lane just before merging.

Stickers are attached to the rear of the

preceding vehicle.

A sign resembling a system compatible

sign is recognized.

The vehicle is driven in a country with a

different direction of traffic.

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.

Vehicles without navigation system: The

speed information displayed on the

meter and that displayed on the naviga-

tion system may be different due to the

navigation system using map data.

Turning the system on/off

Select

of the

multi-information display (



P.93)

Press “OK” on the steering wheel.

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 ON.

Customization

Setting (e.g. speeding warning threshold)

can be changed.

(Customizable feature:



P.435)

252

4-5. Using the driving support systems

Meter display

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

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.254)



Constant speed control mode
(



P.259)

System components

A
B
C

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.260

• Conditions under which the vehicle-

to-vehicle distance control mode may

not function correctly:



P.261

A
B
C
D

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4-5. Using the driving support systems

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WARNING

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.

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 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 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 neces-
sary 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 has limited capability to
prevent or avoid a collision with a vehicle
traveling ahead. Therefore, if there is
ever any danger, the driver must take
immediate and direct control of the vehi-
cle 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 acci-

dent 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

254

4-5. Using the driving support systems

This mode employs a radar sensor to detect the presence of vehicles up to approx-
imately 100 m (328 ft.) ahead, determines the current vehicle-to-vehicle following
distance, and operates to maintain a suitable following distance from the vehicle
ahead.

Note that vehicle-to-vehicle distance will close in when traveling on long downhill slopes.

WARNING

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 high-

ways

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 sensor or

front camera

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

255

4-5. Using the driving support systems

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Example of constant speed cruising
When there are no vehicles ahead

The vehicle travels at the speed set by the driver. The desired vehicle-to-vehicle distance
can also be set by operating the vehicle-to-vehicle distance switch.

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 will resume follow-up cruising.

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 con-
trol.

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

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

256

4-5. Using the driving support systems

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.259)

Accelerate or decelerate, with
accelerator pedal operation, to the
desired vehicle speed (at or above
approximately 50 km/h [30 mph])
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.
If the switch is operated while the vehicle

speed is below approximately 50 km/h

(30 mph) and a preceding vehicle is pres-

ent, the set speed will be adjusted to

approximately 50 km/h (30 mph).

To change the set speed, operate 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 vehi-
cle-to-vehicle 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 Europe

Fine adjustment: By 5 km/h (3.1 mph)

5 mph (8 km/h)

each time the switch is

pressed
Large adjustment: Increases or decreases
in 5 km/h (3.1 mph)

or 5 mph (8 km/h)

increments for as long as the switch is held



Except for Europe

Fine adjustment: By 1 km/h (0.6 mph)

or 1

mph (1.6 km/h)

each time the switch is

pressed
Large adjustment: Increases or decreases
in 5 km/h (3.1 mph)

or 5 mph (8 km/h)

Adjusting the set speed

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4-5. Using the driving support systems

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increments for as long as the switch is held

In the constant speed control mode
(



P.259), the set speed will be

increased or decreased as follows:

Fine adjustment: By 1 km/h (0.6 mph)

or 1

mph (1.6 km/h)

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 “km/h”

: When the set speed is shown in “MPH”

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 engine
switch is turned to ON.
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 80 km/h
(50 mph). 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

distance

Long

Approximately 50

m (160 ft.)

Medium

Approximately 40

m (130 ft.)

Short

Approximately 30

m (100 ft.)

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

258

4-5. Using the driving support systems

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 control, 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.

However, when a vehicle ahead is not
detected, cruise control does not resume
when the vehicle speed is approximately
40 km/h (25 mph) or less.

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 appropri-
ate vehicle-to-vehicle distance.

Warnings may not occur when

In the following instances, warnings
may not occur even when the vehicle-
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

Canceling and resuming the
speed control

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

Lexus LC Cabriolet (2021 year). Manual in english - page 11