Lexus LS500 (2022 year). Manual in english - page 13

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color as its surroundings

• When driving in a place where the sur-

rounding brightness changes suddenly, 

such as at the entrance or exit of a tunnel

• When driving in a location where there 

are many objects which reflect radar, 

such as a tunnel or parking garage

• After the engine has started the vehicle 

has not been driven for a certain amount 

of time

• While making a left/right turn and for a 

few seconds after making a left/right turn

• While driving on a curve and for a few 

seconds after driving on a curve

• If your vehicle is skidding

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

ered

• If the wheels are misaligned

• If a wiper blade is blocking the front cam-

era

• The vehicle is being driven at extremely 

high speeds.

• When driving on a hill

• If the radar sensor or front camera is mis-

aligned

• If the headlights are misaligned

• When approaching a guardrail at a wide 

or narrow angle

• When a vehicle approaches your vehicle 

from the front left or right side while your 

vehicle is entering an intersection with 

poor visibility

• When a vehicle approaches your vehicle 

from the rear left or right side

• When a vehicle approaches the side of 

your vehicle at a shallow angle

• When driving on a road with a grade that 

changes sharply (sharp incline/decline)

• Pedestrians and bicyclists which are not 

illuminated by the headlights at night, in a 

tunnel, etc.

• Pedestrians and bicyclists which change 

speed or direction abruptly

• Pedestrians and bicyclists which suddenly 

emerge from behind a vehicle or large 

object

• Pedestrians and bicyclists which are 

extremely close to the side of the vehicle 

(outside rear view mirror, etc.)

• When driving in a traffic lane separated 

by more than one lane where oncoming 

vehicles are driving while making a 

right/left turn

• When largely out of place with the oppo-

site facing targeted oncoming vehicle 

during a right/left turn

• While making a right/left turn, when a 

pedestrian approaches from behind or 

side of your vehicle

●

In some situations, such as the following, 

the sensors may not detect the lane lines 

or a safe space the vehicle can be steered 

into, preventing the active steering assist 

from operating properly:

• When the white (yellow) lane lines are 

difficult to see, such as when they are 

faint, diverging/merging, or a shadow is 

cast upon them

• When the lane is more wide or narrow 

than normal

• When there is a light and dark pattern on 

the road surface, such as due to road 

repairs

• If the system determines that a collision 

can be avoided by only using the brakes

• When a pedestrian is detected near the 

centerline of the vehicle

●

In some situations such as the following, 

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sufficient braking force or steering force 

may not be obtained, preventing the sys-

tem 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

• If there are deep ruts in the road

• When driving on a slope

• When driving on a horizontally slanted 

road

●

Some guardrails, such as the following, 

may not be detected by the sensors, pre-

venting the system from operating prop-

erly:

• Guardrails which are less than approxi-

mately 1.9 ft. (60 cm) tall

• Short guardrails

• Irregularly-shaped guardrails (wire cable 

guardrails, guardrails made of thin poles, 

etc.)

• Guardrails which are not illuminated by 

the headlights at night, in a tunnel, etc.

• Guardrails which appear to be nearly the 

same color or brightness as their sur-

roundings

• Guardrails which appear to be nearly the 

same shape as their surroundings (walls, 

etc.)

• Guardrails which are over a metal object 

(manhole cover, steel plate, etc.)

• Guardrails which are hidden behind thick 

grass

• Guardrails which are extremely close to 

the side of the vehicle (outside rear view 

mirror, etc.)

• Curved guardrails or guardrails at the 

entrance of a curve

●

In some situations such as the following, 

the system may detect a pedestrian and 

display a warning on the head-up display, 

even though no pedestrian exists:

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

ered, such as when the road surface is 

uneven or undulating (due to ruts, etc.)

• When driving on a slope

• When driving on a horizontally slanted 

road

• If the driver’s posture (driver seat posi-

tion) is extreme, such as excessively 

reclined

• If the head-up display position is set 

extremely high

■

If VSC is disabled

●

If VSC is disabled (



P.304), the 

pre-collision brake assist and pre-colli-

sion braking 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.

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The system can detect the following 
(The detectable objects differs 
depending on the function.):



Vehicles



Bicyclists



Pedestrians

■

Pre-collision warning

When the system determines that the 

possibility of a frontal collision is high, a 
buzzer will sound and a warning mes-
sage will be displayed on the 
multi-information display to urge the 
driver to take evasive action.

■

Pre-collision brake assist

When the system determines that the 
possibility of a frontal collision is high, 
the system applies greater braking 
force in relation to how strongly the 
brake pedal is depressed.

■

Pre-collision braking

If the system determines that the possi-
bility of a frontal collision is extremely 
high, the brakes are automatically 
applied to help avoid the collision or 
reduce the impact of the collision.

■

Pre-collision seatbacks (front pas-
senger’s seat / power rear seat [if 
equipped])

If the system determines that the possi-
bility of a frontal collision is high, it may 
move the seatbacks of the front pas-
senger’s seat and power rear seats to 
the upright position automatically, if 
reclined.

If a seat is being adjusted, it may not be 
moved by the pre-collision seat function.

PCS (Pre-Collision System) 
(vehicles with Lexus Safety 
System + 2.5)

The pre-collision system uses a 
radar sensor and front camera to 
detect objects (



P.219) in front of 

the vehicle. When the system 
determines that the possibility of a 
frontal collision with an object is 
high, a warning operates to urge 
the driver to take evasive action 
and the potential brake pressure is 
increased to help the driver avoid 
the collision. If the system deter-
mines that the possibility of a frontal 
collision with an object is extremely 
high, the brakes are automatically 
applied to help avoid the collision or 
help reduce the impact of the colli-
sion.

The pre-collision system can be dis-
abled/enabled and the warning tim-
ing can be changed. (



P.222)

Detectable objects

System functions

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■

Emergency steering assist

If the system determines that the possi-
bility of a frontal collision is high and 
that there is sufficient space for the 
vehicle to be steered into within its 
lane, and the driver has begun evasive 
maneuver or steering, emergency 
steering assist will assist the steering 
movements to help enhance the vehi-
cle stability and for lane departure pre-
vention. During operation, the 
indicator will illuminate in green.

■

Intersection right/left turn assis-
tance

If the system determines that there is a 
high possibility of a collision in the fol-
lowing situations, it will assist with 
Pre-collision warning and, if necessary 
Pre-collision braking.
Depending on the configuration of the 
intersection, it may not be possible to 
support.



When you turn right/left at an inter-
section and cross the path of an 
oncoming vehicle



When you turn right/left, pedestrian 
is detected in the forward direction 
and estimated to enter your vehi-
cle’s path (bicyclists are not 
detected.)

■

Suspension control (if equipped)

When the system determines that the 
possibility of a frontal collision is high, 
the Adaptive Variable Suspension Sys-
tem (



P.304) will control the damp-

ing force of the shock absorbers to 
help maintain an appropriate vehicle 
posture.

■

Steering control (if equipped)

When the system determines that the 
possibility of a frontal collision is high 
and the driver is operating the steering 
wheel, the LDH system (



P.305) will 

control the turning angle of the front 
and rear wheels and effort necessary 
to turn the steering wheel to help 
enhance steering responsiveness.

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WARNING

■

Limitations of the pre-collision system

●

The driver is solely responsible for safe 

driving. Always drive safely, taking 

care to observe your surroundings.

Do not use the pre-collision system 

instead of normal braking operations 

under any circumstances. This system 

will not prevent collisions or lessen col-

lision damage or injury in every situa-

tion. Do not overly rely on this system. 

Failure to do so may lead to an acci-

dent, resulting in death or serious 

injury.

●

Although this system is designed to 

help avoid a collision or help reduce 

the impact of the collision, its effective-

ness may change according to various 

conditions, therefore the system may 

not always be able to achieve the same 

level of performance.

Read the following conditions care-

fully. Do not overly rely on this system 

and always drive carefully.

• Conditions under which the system 

may operate even if there is no possi-

bility of a collision: 



P.225

• Conditions under which the system 

may not operate properly: 



P.227

●

Do not attempt to test the operation of 

the pre-collision system yourself.

Depending on the objects used for 

testing (dummies, cardboard objects 

imitating detectable objects, etc.), the 

system may not operate properly, pos-

sibly leading to an accident.

■

Pre-collision braking

●

When the pre-collision braking func-

tion is operating, a large amount of 

braking force will be applied.

●

If the vehicle is stopped by the opera-

tion of the pre-collision braking func-

tion, the pre-collision braking function 

operation will be canceled after 

approximately 2 seconds. Depress the 

brake pedal as necessary.

●

The pre-collision braking function may 

not operate if certain operations are 

performed by the driver. If the acceler-

ator pedal is being depressed strongly 

or the steering wheel is being turned, 

the system may determine that the 

driver is taking evasive action and pos-

sibly prevent the pre-collision braking 

function from operating.

●

In some situations, while the pre-colli-

sion braking function is operating, 

operation of the function may be can-

celed if the accelerator pedal is 

depressed strongly or the steering 

wheel is turned and the system deter-

mines that the driver is taking evasive 

action.

●

If the brake pedal is being depressed, 

the system may determine that the 

driver is taking evasive action and pos-

sibly delay the operation timing of the 

pre-collision braking function.

■

Emergency steering assist

●

As emergency steering assist opera-

tion will be canceled when the system 

determines that lane departure pre-

vention function has been completed.

●

Emergency steering assist may not 

operate or may be canceled in the fol-

lowing cases as the system may deter-

mine the driver is taking actions.

• If the accelerator pedal is being 

depressed strongly, the steering wheel 

is being operated sharply, the brake 

pedal is being depressed or the turn 

signal lever is being operated. In this 

case, the system may determine that 

the driver is taking evasive action and 

the emergency steering assist may not 

operate.

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■

Enabling/disabling the pre-colli-
sion system

The pre-collision system can be 
enabled/disabled on 

 (



P.77) of 

the multi-information display.

The system is automatically enabled each 
time the engine switch is turned to IGNI-
TION ON mode.

If the system is disabled, the PCS warn-
ing light will turn on and a message will 
be displayed on the multi-information 
display.

WARNING

• In some situations, while the emer-

gency steering assist is operating, 

operation of the function may be can-

celed if the accelerator pedal is 

depressed strongly, the steering wheel 

is operated sharply or the brake pedal 

is being depressed and the system 

determines that the driver is taking 

evasive action.

• When the emergency steering assist is 

operating, if the steering wheel is held 

firmly or is operated in the opposite 

direction to that which the system is 

generating torque, the function may be 

canceled.

■

When to disable the pre-collision sys-

tem

In the following situations, disable the 

system, as it may not operate properly, 

possibly leading to an accident resulting 

in death or serious injury:

●

When the vehicle is being towed

●

When your vehicle is towing another 

vehicle

●

When transporting the vehicle via 

truck, boat, train or similar means of 

transportation

●

When the vehicle is raised on a lift with 

the engine running and the tires are 

allowed to rotate freely

●

When inspecting the vehicle using a 

drum tester such as a chassis dyna-

mometer or speedometer tester, or 

when using an on vehicle wheel bal-

ancer

●

When a strong impact is applied to the 

front bumper or front grille, due to an 

accident or other reasons

●

If the vehicle cannot be driven in a sta-

ble manner, such as when the vehicle 

has been in an accident or is malfunc-

tioning

●

When the vehicle is driven in a sporty 

manner or off-road

●

When the tires are not properly 

inflated

●

When the tires are very worn

●

When tires of a size other than speci-

fied are installed

●

When tire chains are installed

●

When a compact spare tire or an 

emergency tire puncture repair kit is 

used

●

If equipment (snow plow, etc.) that may 

obstruct the radar sensor or front cam-

era is temporarily installed to the vehi-

cle

Changing settings of the pre-col-
lision system

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■

Changing the pre-collision warn-
ing timing

The pre-collision warning timing can 
be changed on 

 (



P.77) of the 

multi-information display.

The warning timing setting is retained 
when the engine switch is turned off. How-
ever, if the pre-collision system is disabled 
and re-enabled, the operation timing will 
return to the default setting (middle).

If the pre-collision warning timing is 
changed, emergency steering assist 
timing will also be changed accord-

ingly.
If late is selected, emergency steering 
assist would not operate in case of an 
emergency.

1

Early

2

Middle

This is the default setting.

3

Late

■

Operational conditions for each pre-collision function

The pre-collision system is enabled and the system determines that the possibility of a frontal 

collision with a detected object is high.
The system may not operate in the following situations:
• If a battery terminal has been disconnected and reconnected and then the vehicle has not 

been driven for a certain amount of time

• If the shift position is in R
• When the VSC OFF indicator is illuminated (only the pre-collision warning function will 

be operational)

The operation speeds and operation cancellation for each function is listed below.

●

Pre-collision warning

Detectable objects

Vehicle speed

Relative speed between your 

vehicle and object

Preceding and stopped vehi-

cles

Approx. 7 to 110 mph (10 to 

180 km/h)

Approx. 7 to 110 mph (10 to 

180 km/h)

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While the pre-collision warning function is operating, if the steering wheel is operated heav-

ily or suddenly, the pre-collision warning may be cancelled.

●

Pre-collision brake assist

●

Pre-collision braking

If either of the following occur while the pre-collision braking function is operating, it will be 

canceled:
• The accelerator pedal is depressed strongly.
• The steering wheel is turned sharply or abruptly.

●

Emergency steering assist

When the turn signal lights are flashing, emergency steering assist will not operate in case of 

an emergency.

Oncoming vehicles

Approx. 7 to 110 mph (10 to 

180 km/h)

Approx. 13 to 110 mph (20 to 

180 km/h)

Bicyclists and pedestrians

Approx. 7 to 50 mph (10 to 

80 km/h)

Approx. 7 to 50 mph (10 to 

80 km/h)

Detectable objects

Vehicle speed

Relative speed between your 

vehicle and object

Detectable objects

Vehicle speed

Relative speed between your 

vehicle and object

Preceding and stopped vehi-

cles

Approx. 20 to 110 mph (30 

to 180 km/h)

Approx. 20 to 110 mph (30 

to 180 km/h)

Bicyclists and pedestrians

Approx. 20 to 50 mph (30 

to 80 km/h)

Approx. 20 to 50 mph (30 

to 80 km/h)

Detectable objects

Vehicle speed

Relative speed between your 

vehicle and object

Preceding and stopped vehi-

cles

Approx. 7 to 110 mph (10 to 

180 km/h)

Approx. 7 to 110 mph (10 to 

180 km/h)

Oncoming vehicles

Approx. 7 to 110 mph (10 to 

180 km/h)

Approx. 13 to 110 mph (20 to 

180 km/h)

Bicyclists and pedestrians

Approx. 7 to 50 mph (10 to 

80 km/h)

Approx. 7 to 50 mph (10 to 

80 km/h)

Detectable objects

Vehicle speed

Relative speed between your 

vehicle and object

Preceding and stopped vehi-

cles, bicyclists and pedestri-

ans

Approx. 25 to 50 mph (40 

to 80 km/h)

Approx. 25 to 50 mph (40 

to 80 km/h)

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If any of the following occur while the emergency steering assist function is operating, it will 

be canceled:
• The accelerator pedal is depressed strongly.
• The steering wheel is turned sharply or abruptly.
• The brake pedal is depressed.

●

Intersection right/left turn assistance (pre-collision warning)

When the turn signal lights are not flashing, support for turning left or right at an intersection 

which targets oncoming vehicles does not work.

●

Intersection right/left turn assistance (pre-collision braking)

When the turn signal lights are not flashing, support for turning left or right at an intersection 

which targets oncoming vehicles does not work.

■

Object detection function

The system detects objects based on their 

size, profile, motion, etc. However, an object 

may not be detected depending on the sur-

rounding brightness and the motion, pos-

ture, and angle of the detected object, 

preventing the system from operating prop-

erly. (



P.227)

The illustration shows an image of detect-

able objects.

■

Conditions under which the system may 

operate even if there is no possibility of a 

collision

●

In some situations such as the following, 

the system may determine that there is a 

possibility of a frontal collision and oper-

ate.

Detectable objects

Vehicle speed

Oncoming vehicle 

speed

Relative speed 

between your vehi-

cle and object

Oncoming vehicles

Approx. 7 to 15 mph 

(10 to 25 km/h)

Approx. 20 to 35 

mph (30 to 55 km/h)

Approx. 25 to 50 

mph (40 to 80 

km/h)

Pedestrians

Approx. 7 to 15 mph 

(10 to 25 km/h)

-

Approx. 7 to 15 mph 

(10 to 25 km/h)

Detectable objects

Vehicle speed

Oncoming vehicle 

speed

Relative speed 

between your vehi-

cle and object

Oncoming vehicles

Approx. 10 to 15 mph 

(15 to 25 km/h)

Approx. 20 to 28 

mph (30 to 45 km/h)

Approx. 28 to 43 

mph (45 to 70 km/h)

Pedestrians

Approx. 7 to 15 mph 

(10 to 25 km/h)

-

Approx. 7 to 15 mph 

(10 to 25 km/h)

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• When passing a detectable object, etc.

• When changing lanes while overtaking a 

detectable object, etc.

• When approaching a detectable object 

in an adjacent lane or on the roadside, 

such as when changing the course of 

travel or driving on a winding road

• When rapidly closing on a detectable 

object, etc.

• When approaching objects on the road-

side, such as detectable objects, guard-

rails, utility poles, trees, or walls

• When there is detectable object or other 

object by the roadside at the entrance of 

a curve

• When there are patterns or paint in front 

of your vehicle that may be mistaken for a 

detectable object

• When the front of your vehicle is hit by 

water, snow, dust, etc.

• When overtaking a detectable object 

that is changing lanes or making a 

right/left turn

• When passing a detectable object in an 

oncoming lane that is stopped to make a 

right/left turn

• When a detectable object approaches 

very close and then stops before entering 

the path of your vehicle

• If the front of your vehicle is raised or low-

ered, such as when on an uneven or 

undulating road surface

• When driving on a road surrounded by a 

structure, such as in a tunnel or on an iron 

bridge

• When there is a metal object (manhole 

cover, steel plate, etc.), steps, or a protru-

sion in front of your vehicle

• When passing under an object (road 

sign, billboard, etc.)

• When approaching an electric toll gate 

barrier, parking area barrier, or other 

barrier that opens and closes

• When using an automatic car wash

• When driving through or under objects 

that may contact your vehicle, such as 

thick grass, tree branches, or a banner

• When driving through steam or smoke

• When driving near an object that reflects 

radio waves, such as a large truck or 

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guardrail

• When driving near a TV tower, broad-

casting station, electric power plant, 

radar equipped vehicles, etc., or other 

location where strong radio waves or 

electrical noise may be present

• When there are many things which can 

reflect the radio waves of the radar in the 

vicinity (tunnels, truss bridges, gravel 

roads, snow covered road that have 

tracks, etc.)

• While making a right/left turn, when an 

oncoming vehicle or a crossing pedes-

trian has already exited the path of your 

vehicle

• While making a right/left turn, closely in 

front of an oncoming vehicle or a cross-

ing pedestrian.

• While making a right/left turn, when an 

oncoming vehicle or a crossing pedes-

trian stops before entering the path of 

your vehicle

• While making a right/left turn, when an 

oncoming vehicle turns right/left in front 

of your vehicle

• While steering into the direction of 

oncoming traffic

■

Situations in which the system may not 

operate properly

●

In some situations such as the following, 

an object may not be detected by the 

radar sensor and front camera, prevent-

ing the system from operating properly:

• When a detectable object is approaching 

your vehicle

• When your vehicle or a detectable object 

is wobbling

• If a detectable object makes an abrupt 

maneuver (such as sudden swerving, 

acceleration or deceleration)

• When your vehicle approaches a detect-

able object rapidly

• When a detectable object is not directly 

in front of your vehicle

• When a detectable object is near a wall, 

fence, guardrail, manhole cover, vehicle, 

steel plate on the road, etc.

• When a detectable object is under a 

structure

• When part of a detectable object is hid-

den by an object, such as large baggage, 

an umbrella, or guardrail

• When there are many things which can 

reflect the radio waves of the radar in the 

vicinity (tunnels, truss bridges, gravel 

roads, snow covered road that have 

tracks, etc.)

• When there is an effect on the radio 

waves to the radar that is installed on 

another vehicle

• When multiple detectable objects are 

close together

• If the sun or other light is shining directly 

on a detectable object

• When a detectable object is a shade of 

white and looks extremely bright

• When a detectable object appears to be 

nearly the same color or brightness as its 

surroundings

• If a detectable object cuts or suddenly 

emerges in front of your vehicle

• When the front of your vehicle is hit by 

water, snow, dust, etc.

• When a very bright light ahead, such as 

the sun or the headlights of oncoming 

traffic, shines directly into the front cam-

era

• When approaching the side or front of a 

vehicle ahead

• If a vehicle ahead is a motorcycle

• If a vehicle ahead is narrow, such as a per-

sonal mobility vehicle

• If a preceding vehicle has a small rear 

end, such as an unloaded truck

• If a preceding vehicle has a low rear end, 

such as a low bed trailer

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• If a vehicle ahead has extremely high 

ground clearance

• If a vehicle ahead is carrying a load which 

protrudes past its rear bumper

• If a vehicle ahead is irregularly shaped, 

such as a tractor or side car

• If a vehicle ahead is a child sized bicycle, 

a bicycle that is carrying a large load, a 

bicycle ridden by more than one person, 

or a uniquely shaped bicycle (bicycle with 

a child seat, tandem bicycle, etc.)

• If a pedestrian/or the riding height of a 

bicyclist ahead is shorter than approxi-

mately 3.2 ft. (1 m) or taller than approxi-

mately 6.5 ft. (2 m)

• If a pedestrian/bicyclist is wearing over-

sized clothing (a rain coat, long skirt, 

etc.), making their silhouette obscure

• If a pedestrian is bending forward or 

squatting or bicyclist is bending forward

• If a pedestrian/bicyclist is moving fast

• If a pedestrian is pushing a stroller, wheel-

chair, bicycle or other vehicle

• When driving in inclement weather such 

as heavy rain, fog, snow or a sandstorm

• When driving through steam or smoke

• When the surrounding area is dim, such 

as at dawn or dusk, or while at night or in 

a tunnel, making a detectable object 

appear to be nearly the same color as its 

surroundings

• When driving in a place where the sur-

rounding brightness changes suddenly, 

such as at the entrance or exit of a tunnel

• After the engine has started the vehicle 

has not been driven for a certain amount 

of time

• While making a left/right turn and for a 

few seconds after making a left/right turn

• While driving on a curve and for a few 

seconds after driving on a curve

• If your vehicle is skidding

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

ered

• If the wheels are misaligned

• If a wiper blade is blocking the front cam-

era

• The vehicle is being driven at extremely 

high speeds

• When driving on a hill

• If the radar sensor or front camera is mis-

aligned

• When driving in a traffic lane separated 

by more than one lane where oncoming 

vehicles are driving while making a 

right/left turn

• When largely out of place with the oppo-

site facing targeted oncoming vehicle 

during a right/left turn

• While making a right/left turn, when a 

pedestrian approaches from behind or 

side of your vehicle

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4-5. Using the driving support systems

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4

Driving

●

In addition to the above, in some situa-

tions, such as the following, the emer-

gency steering assist may not operate.

• When the white (yellow) lane lines are 

difficult to see, such as when they are 

faint, diverging/merging, or a shadow is 

cast upon them

• When the lane is wider or narrower than 

normal

• When there is a light and dark pattern on 

the road surface, such as due to road 

repairs

• When the target is too close

• When there is insufficient safe or unob-

structed space for the vehicle to be 

steered into

• If oncoming vehicle is present

• If VSC function is operating

●

In some situations such as the following, 

sufficient braking force or steering force 

may not be obtained, preventing the sys-

tem 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

• When the road surface has deep wheel 

tracks

• When driving on a hill road

• When driving on a road that has inclines 

to the left or right

■

If VSC is disabled

●

If VSC is disabled (



P.306), the 

pre-collision brake assist and pre-colli-

sion braking 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.

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4-5. Using the driving support systems

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*

: If equipped

When the system detects a vehicle 
approaching from the left or right in 
front of your vehicle when approaching 
an intersection, a notification will be 
displayed on the head-up display and 
panoramic view monitor

*

.

*

: Refer to “NAVIGATION AND MULTI-

MEDIA SYSTEM OWNER’S MAN-
UAL”.

When the system determines that your 
vehicle may be about to enter an inter-
section even though a vehicle is 
approaching from the left or right in 
front of your vehicle, a buzzer will 
sound and a message will be displayed 
on the multi-information display to 
urge you to depress the brake pedal.



Head-up display



Multi-information display

FCTA (Front Cross Traffic 
Alert)

*

When approaching an intersection 
at low speed, the radar sensors on 
the front side of the vehicle can 
detect approaching vehicles to the 
left and right of the front of the vehi-
cle. In this case, the head-up display 
is used to inform the driver of 
detected vehicles.

FCTA system functions

WARNING

■

Cautions regarding the use of the 

function

The driver is solely responsible for safe 

driving. Always drive safely, taking care 

to observe your surroundings.
The FCTA system is a supplementary 

system that informs the driver of vehicles 

approaching from the left and right of the 

front of the vehicle.
Do not overly rely on the FCTA system. 

Over reliance on the system may lead to 

an accident, resulting in death or serious 

injury.
The details of the warning display may 

differ from the actual traffic conditions.
Although the warning display will stop 

being displayed after a certain amount of 

time, this does not indicate that vehicles 

or pedestrians are no longer around your 

vehicle.

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4-5. Using the driving support systems

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4

Driving

■

Enabling/disabling the FCTA sys-
tem

The FCTA system can be enabled/dis-
abled on 

 (



P.77) of the 

multi-information display.

The system is automatically enabled each 
time the engine switch is turned to IGNI-
TION ON mode.

■

Changing the alert timing

The FCTA (Front Cross Traffic Alert) 
timing can be changed on 

 

(



P.77) of the multi-information dis-

play.

The set alert timing is retained when the 
engine switch is turned off. However, if the 
FCTA system is disabled and re-enabled, 
the alert timing will return to the default 
setting (middle).

1

Early

2

Middle

This is the default setting.

3

Late

■

The FCTA function is operational when

The system operates when all of the follow-

ing conditions are met.

●

A shift position other than P or R is 

selected.

●

Vehicle speed is approximately 9 mph 

(15 km/h) or lower.

●

A vehicle is approaching from the left or 

right in front of your vehicle at a speed 

between approximately 6 mph (10 km/h) 

and 37 mph (60 km/h).

●

There are no preceding vehicles ahead of 

your vehicle.

●

The accelerator pedal is not strongly 

depressed.

●

The brake pedal is not being strongly 

depressed.

■

Situations in which the system may 

operate even though no vehicles are 

approaching

In certain situations, such as the following, 

the system may operate even though no 

vehicles are approaching:

●

When approaching objects on the road-

side, such as guardrails, traffic signs, util-

ity poles, street lights, trees, or walls

●

When driving near a TV tower, broad-

casting station, electric power plant, or 

other location where strong radio waves 

or electrical noise may be present

●

When passing an object on the side of the 

road, such as a parked vehicle

●

When a vehicle or pedestrian is 

approaching from the left or right in front 

of your vehicle from far away

●

When a vehicle or pedestrian is moving 

within a parking spot, etc. next to the lane 

your vehicle is driving in

●

When a pedestrian or bicyclist is moving 

on a sidewalk

●

When a vehicle or pedestrian is moving 

away from your vehicle

●

When a vehicle approaching from the left 

or right in front of your vehicle is deceler-

ating or stops

●

When a vehicle approaching from the left 

Changing settings of the FCTA 
system

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LEXUS LS500 Owner's Manual

or right in front of your vehicle makes a 

left/right turn immediately in front of your 

vehicle

●

When a pedestrian is approaching your 

vehicle

●

When an oncoming vehicle makes a 

left/right turn

●

When your vehicle enters an intersection 

before a vehicle approaching from the 

left or right in front of your vehicle

●

When stopped at traffic light and a vehi-

cle approaches from the left or right in 

front of your vehicle

●

When driving in a location where there 

are objects which reflect radar, such as 

vehicles, guardrails, walls, traffic signs, 

etc.

●

When making a left/right turn in front of 

an approaching vehicle

●

When passing an oncoming vehicle

●

When being overtaken by another vehi-

cle

●

When driving next to another vehicle or a 

pedestrian

●

When a vehicle or pedestrian 

approaches the side of your vehicle

Some objects, such as the following, may be 

detected and cause the FCTA system to 

operate:

●

Pedestrians

■

Situations in which the system may not 

operate properly

In some situations, such as the following, a 

vehicle may not be detected by a front side 

radar sensor, preventing the system from 

operating properly:

●

If the front end or side of an approaching 

vehicle is small (sports cars, etc.)

●

If the front end of an approaching vehicle 

is low (low-slung sports cars, etc.)

●

If the ground clearance of an approach-

ing vehicle is extremely high

●

If the shape of an approaching vehicle is 

unusual (tractors, motorcycles with side-

cars, etc.)

●

If a vehicle suddenly enters the detection 

area on the left or right in front of your 

vehicle from a parking lot, etc.

●

If an approaching vehicle moves sud-

denly (sudden steering, acceleration, 

deceleration, etc.)

●

When driving in inclement weather such 

as heavy rain, fog, snow or a sandstorm

●

After the engine has been started and the 

vehicle has not been driven for a certain 

amount of time

●

When driving on a road with a grade that 

changes sharply (sharp incline/decline)

●

When driving around a sharp curve or on 

an undulating road

●

If a vehicle is approaching from the left or 

right of the front of your vehicle diago-

nally

●

When a vehicle is approaching from the 

left or right in front of your vehicle from 

far away

●

When there is an object between your 

vehicle and an approaching vehicle

●

When driving in a location where there 

are objects which reflect radar, such as 

guardrails, walls, vehicles, etc.

●

When a group of vehicles which are close 

together approach

●

Immediately after the FCTA system has 

been enabled