Lexus LC500h (2021 year). Manual in english - page 12

206

4-5. Using the driving support systems

• The vehicle is wobbling.

• The vehicle is being driven at extremely 

high speeds.

• When driving on a hill

• If the radar sensor or front camera is mis-

aligned

●

In some situations such as the following, 

sufficient braking force may not be 

obtained, preventing the system from 

performing properly:

• If the braking functions cannot operate to 

their full extent, such as when the brake 

parts are extremely cold, extremely hot, 

or wet

• If the vehicle is not properly maintained 

(brakes or tires are excessively worn, 

improper tire inflation pressure, etc.)

• When the vehicle is being driven on a 

gravel road or other slippery surface

●

Some pedestrians such as the following 

may not be detected by the radar sensor 

and front camera, preventing the system 

from operating properly:

• Pedestrians shorter than approximately 

3.2 ft. (1 m) or taller than approximately 

6.5 ft. (2 m)

• Pedestrians wearing oversized clothing 

(a rain coat, long skirt, etc.), making their 

silhouette obscure

• Pedestrians who are carrying large bag-

gage, holding an umbrella, etc., hiding 

part of their body

• Pedestrians who are bending forward or 

squatting

• Pedestrians who are pushing a stroller, 

wheelchair, bicycle or other vehicle

• Groups of pedestrians which are close 

together

• Pedestrians who are wearing white and 

look extremely bright

• Pedestrians in the dark, such as at night 

or while in a tunnel

• Pedestrians whose clothing appears to 

be nearly the same color or brightness as 

their surroundings

• Pedestrians near walls, fences, guardrails, 

or large objects

• Pedestrians who are on a metal object 

(manhole cover, steel plate, etc.) on the 

road

• Pedestrians who are walking fast

• Pedestrians who are changing speed 

abruptly

• Pedestrians running out from behind a 

vehicle or a large object

• Pedestrians who are extremely close to 

the side of the vehicle (outside rear view 

mirror, etc.)

■

If VSC is disabled

●

If VSC is disabled (



P.244), the pre-col-

lision brake assist and pre-collision brak-

ing functions are also disabled.

●

The PCS warning light will turn on and 

“VSC Turned Off Pre-Collision Brake 

System Unavailable” will be displayed on 

the multi-information display.

207

4-5. Using the driving support systems

4

Driving

■

Lane departure alert function

When the system determines that the 
vehicle might depart from its lane, a 
warning is displayed on the multi-infor-
mation display, and either the warning 
buzzer sounds to alert the driver.

When the warning buzzer sounds, check 
the surrounding road situation and care-

fully operate the steering wheel to move 
the vehicle back to the center of the lane.

■

Steering assist function

When the system determines that the 
vehicle might depart from its lane, the 
system provides assistance as neces-
sary 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, a warning is displayed 
on the multi-information display and the 
warning buzzer sounds.

LKA (Lane-Keeping Assist)

When driving on highways and 
freeways with white or yellow lines, 
this function alerts the driver when 
the vehicle might depart from its 
lane and provides assistance by 
operating the steering wheel to 
keep the vehicle in its lane. Further-
more, the system also provides 
steering assistance when dynamic 
radar cruise control with full-speed 
range is operating to keep the vehi-
cle in its lane.
The LKA system recognizes visible 
white or yellow lines with the front 
camera on the upper portion of the 
front windshield.

Functions included in LKA sys-
tem

208

4-5. Using the driving support systems

■

Vehicle sway warning function

When the vehicle is swaying or 
appears as if it may depart from its lane 
multiple times, the warning buzzer 
sounds and a message is displayed on 
the multi-information display to alert 
the driver.

■

Lane centering function

This function is linked with radar cruise 
control and provides the required 
assistance by operating the steering 
wheel to keep the vehicle in its current 
lane.

When radar cruise control is not operating, 
the lane centering function does not oper-
ate.
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.

209

4-5. Using the driving support systems

4

Driving

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 <hybrid system> is started.

WARNING

■

Before using LKA system

Do not rely solely upon the LKA system. 

The LKA system does not automatically 

drive the vehicle or reduce the amount of 

attention that must be paid to the area in 

front of the vehicle. The driver must 

always assume full responsibility for driv-

ing safely by paying careful attention to 

the surrounding conditions and operat-

ing the steering wheel to correct the path 

of the vehicle. Also, the driver must take 

adequate breaks when fatigued, such as 

from driving for a long period of time.
Failure to perform appropriate driving 

operations and pay careful attention may 

lead to an accident, resulting in death or 

serious injury.

■

To avoid operating LKA system by 

mistake

When not using the LKA system, use the 

LKA switch to turn the system off.

■

Situations unsuitable for LKA system

Do not use the LKA system in the follow-

ing situations. 

The system may not operate properly 

and lead to an accident, resulting in 

death or serious injury.

●

A spare tire, tire chains, etc. are 

equipped.

●

When the tires have been excessively 

worn, or when the tire inflation pres-

sure is low.

●

Tires which differ by structure, manu-

facturer, brand or tread pattern are 

used.

●

Objects or patterns that could be mis-

taken for white (yellow) lines are pres-

ent on the side of the road (guardrails, 

curbs, reflective poles, etc.).

●

Vehicle is driven on a snow-covered 

road.

●

White (yellow) lines are difficult to see 

due to rain, snow, fog, dust, etc.

●

Asphalt repair marks, white (yellow) 

line marks, etc. are present due to road 

repair.

●

Vehicle is driven in a temporary lane or 

restricted lane due to construction 

work.

●

Vehicle is driven on a road surface 

which is slippery due to rainy weather, 

fallen snow, freezing, etc.

●

Vehicle is driven in traffic lanes other 

than on highways and freeways.

●

Vehicle is driven in a construction 

zone.

■

Preventing LKA system malfunctions 

and operations performed by mistake

●

Do not modify the headlights or place 

stickers, etc. on the surface of the 

lights.

●

Do not modify the suspension etc. If 

the suspension etc. needs to be 

replaced, contact your Lexus dealer.

●

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 your Lexus dealer.

Turning LKA system on

210

4-5. Using the driving support systems

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.



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 rec-
ognize white (yellow) lines or is temporar-
ily canceled.

Indications on multi-information 
display

A

B

C

211

4-5. Using the driving support systems

4

Driving

■

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 32 mph 

(50 km/h) or more.

• System recognizes white (yellow) lines.

• Width of traffic lane is approximately 9.8 

ft. (3 m) 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 492 ft. (150 m).

• No system malfunctions are detected. 

(



P.213)

●

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.86)

• 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, 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.86)

• 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.213)

●

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.86)

• System recognizes white (yellow) lines.

• Dynamic radar cruise control with full-

speed range is operating.

• Width of traffic lane is approximately 8.2 

to 13.5 ft. (2.5 to 4.1 m).

• 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 656 ft. (200 

m).

• No system malfunctions are detected. 

(



P.213)

• 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, TRAC and PCS are not oper-

ating.

• TRAC or VSC is not turned off.

• 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.211)

■

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

When the system determines that the driver 

has removed their hands from the steering 

wheel while the steering assist function or 

lane centering function is operating, a warn-

ing message urging the driver to hold the 

steering wheel and the symbol shown in the 

illustration are displayed on the multi-infor-

mation display.

212

4-5. Using the driving support systems

If the driver continues to keep their hands 

off of the steering wheel, a buzzer sounds 

and a warning message and the symbol 

shown in the illustration are displayed on 

the multi-information display. This warning 

also operates in the same way when the 

driver continuously operates the steering 

wheel only a small amount. Always keep 

your hands on the steering wheel when 

using this system, regardless of warnings.

Depending on the vehicle and road condi-

tions, the warning may not operate.

■

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.

■

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, 

“Botts’ dots”, “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 

213

4-5. Using the driving support systems

4

Driving

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.

Warning message

Details/Actions

“Lane Keeping 

Assist Malfunction 
Visit Your Dealer”

The system may not 
be operating prop-
erly.



Have the vehicle 
inspected at 
your Lexus 
dealer.

“Front Camera 

Unavailable 

Remove Debris On 

Windshield”

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



Turn the LKA 
system off, 
remove any dirt, 
rain, condensa-
tion, ice, snow, 
etc., from the 
windshield, and 
then turn the 
LKA system 
back on.

“Front Camera 

Unavailable”

The operation con-
ditions of the front 
camera (tempera-
ture, etc.) are not 
met.



When the opera-
tion conditions 
of the front cam-
era (tempera-
ture, etc.) are 
met, the LKA 
system will 
become avail-
able. Turn the 
LKA system off, 
wait for a little 
while, and then 
turn the LKA 
system back on.

“Lane Keeping 

Assist Unavailable”

The LKA system is 
temporarily can-
celed due to a mal-
function in a sensor 
other than the front 
camera.



Turn the LKA 
system off and 
follow the appro-
priate trouble-
shooting 
procedures for 
the warning 
message. After-
ward, drive the 
vehicle for a 
short time, and 
then turn the 
LKA system 
back on.

Warning message

Details/Actions

214

4-5. Using the driving support systems

If a different warning message is displayed, 

follow the instructions displayed on the 

screen.

■

Customization

The following settings can be changed.

For how to change settings, refer to P.405.

■

Meter display

Display

Set speed

Indicators

“Lane Keeping 

Assist Unavailable 

Below Approx 

32MPH”

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



Drive the vehicle 
at approxi-
mately 32 mph 
(50 km/h) or 
more.

“Lane Keeping 

Assist Unavailable at 

Current Speed”

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



Slow down.

Function

Setting details

Lane departure alert 

function

Adjust alert sensitiv-

ity

Steering assist func-

tion

Turn steering wheel 

assistance on and off

Vehicle sway warn-

ing function

Turn function on and 

off

Adjust alert sensitiv-

ity

Lane centering 

function

Turn function on and 

off

Warning message

Details/Actions

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.217)



Constant speed control mode 
(



P.221)

System Components

A
B
C

215

4-5. Using the driving support systems

4

Driving

■

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.222

• Conditions under which the vehicle-

to-vehicle distance control mode may 

not function correctly: 



P.223

●

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

E

●

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 assum-

ing the system ensures safety while 

driving can lead to an accident, result-

ing 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 fol-

lowing distance between the driver’s 

own vehicle and a designated vehicle 

traveling ahead. It is not a mechanism 

that allows careless or inattentive driv-

ing, 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 vigilant and to determine 

whether or not there is a possibility of 

danger in any given situation.

216

4-5. Using the driving support systems

WARNING

●

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 con-

trol of the vehicle and act appropri-

ately 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

●

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 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

217

4-5. Using the driving support systems

4

Driving

This mode employs a radar sensor to detect the presence of vehicles up to approx-
imately 328 ft. (100 m) 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.

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.

Driving in vehicle-to-vehicle distance control mode

A

B

C

218

4-5. Using the driving support systems

1

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.221)

2

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

speed is below approximately 30 mph (50 

km/h) and a preceding vehicle is present, 

the set speed will be adjusted to approxi-

mately 30 mph (50 km/h).

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

1

Increases the speed

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

2

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 and Hawaii

Fine adjustment: By 1 mph (1.6 km/h)

*1

 or 1 

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

Adjusting the set speed

219

4-5. Using the driving support systems

4

Driving

km/h (0.6mph)

*2

 each time the switch is 

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

*1

 or 1 km/h (0.6 mph)

*2

 

increments for as long as the switch is held



Except for the U.S. mainland and 
Hawaii

Fine adjustment: By 1 mph (1.6 km/h)

*1

 or 1 

km/h (0.6mph)

*2

 each time the switch is 

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

*1

 or 5 km/h (3.1 mph)

*2

 

increments for as long as the switch is held

In the constant speed control mode 
(



P.221), the set speed will be 

increased or decreased as follows:

Fine adjustment: By 1 mph (1.6 km/h)

*1

 or 1 

km/h (0.6 mph)

*2

 each time the switch is 

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

*1

: When the set speed is shown in “MPH”

*2

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

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

1

Long

2

Medium

3

Short

The vehicle-to-vehicle distance is set auto-
matically to long mode when the engine 
switch <power switch> is turned to IGNI-
TION ON mode <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 

distance

Long

Approximately 160 

ft. (50 m)

Medium

Approximately 130 

ft. (40 m)

Short

Approximately 100 

ft. (30 m)

A

220

4-5. Using the driving support systems

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.

1

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.)

2

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 
25 mph (40 km/h) 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 appropriate vehi-
cle-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

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

Canceling and resuming the 
speed control

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

221

4-5. Using the driving support systems

4

Driving



Immediately after the cruise control 
speed was set



When depressing the accelerator 
pedal

When constant speed control mode is 
selected, your vehicle will maintain a 
set speed without controlling the vehi-
cle-to-vehicle distance. Select this 
mode only when vehicle-to-vehicle dis-
tance control mode does not function 
correctly due to a dirty radar sensor, 
etc.

1

With the cruise control off, press 
and hold the cruise control main 
switch for 1.5 seconds or more.

Immediately after the switch is pressed, the 

radar cruise control indicator will come on. 

Afterwards, it switches to the cruise con-

trol indicator.
Switching to constant speed control mode 

is only possible when operating the switch 

with the cruise control off.

2

Accelerate or decelerate, with 
accelerator pedal operation, to the 
desired vehicle speed (at or above 
approximately 25 mph [40 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 speed setting: 



P.218

Canceling and resuming the speed setting: 



P.220

■

Dynamic radar cruise control with full-

speed range can be set when

●

The shift position is in D.

●

LC500: Range 4 or higher of D has been 

selected by using the paddle shift switch.

●

Vehicle speed is at or above approxi-

mately 30 mph (50 km/h). 

However, when a preceding vehicle is 

detected, the dynamic radar cruise con-

trol with full-speed range can be set even 

if the vehicle speed is below approxi-

mately 30 mph (50 km/h).

■

Accelerating after setting the vehicle 

speed

The vehicle can accelerate by operating the 

accelerator pedal. After accelerating, the 

set speed resumes. However, during vehi-

cle-to-vehicle distance control mode, the 

vehicle speed may decrease below the set 

speed in order to maintain the distance to 

the preceding vehicle.

■

When the vehicle stops while follow-up 

cruising

●

Pressing the “+RES” switch while the 

vehicle ahead stops will resume follow-up 

cruising if the vehicle ahead starts off 

within approximately 3 seconds after the 

switch is pressed.

●

If the vehicle ahead starts off within 3 sec-

onds after your vehicle stops, follow-up 

Selecting constant speed con-
trol mode