engine LEXUS LS500 2019 Owners Manual

2074-5. Using the driving support systems
LS500_OM_(U)_1810 4
Driving ■
Enabling/disabling the pre-colli-
sion system
The pre-collision system can be
enabled/disabled on (  P.80) of
the multi-information display. The system is automa tically 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.
If the pre-collision sy stem is disabled,
the pedestrian alert system will also be
disabled. At this time, the FCTA (Front
Cross Traffic Alert) (  P.222) system
will also be disabled.
■
Enabling/Disabling the pedestrian
alert system
The pedestrian alert can be
enabled/disabled on (  P.80) of
the multi-information display. At this
time, the FCTA (Front Cross Traffic
Alert) system will also be enabled/dis-
abled.WARNING●
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 has been
applied to the front bumper, rear
bumper or front grille, due to an acci-
dent 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 a radar sensor or the front
camera is temporarily installed to the
vehicle Changing settings of the pre-col-
lision system

208 4-5. Using the driving support systems
LS500_OM_(U)_1810 ■
Changing the pre-collision warn-
ing timing
The pre-collision warning timing can
be changed on (  P.80) of the
multi-information display. The warning
timing for the pedestrian and FCTA
(Front Cross Traffic Alert) system will
also be changed. The warning timing se tting 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).
1 Early
2 Middle This is the default setting.
3 Late ■
Changing the pedestrian alert tim-
ing
If the pre-collision warning timing is
changed, the pedestrian alert and
FCTA (Front Cross Traffic Alert) timing
will also be changed accordingly.■
Operational conditions
The pre-collision system is enabled and the system determines that the possibility of a frontal
collision with a vehicle, pedestri an/bicyclist, guardrail, etc. or a front side collision with a
vehicle is high. Each function is operational at the following speeds:●
Pedestrian alert
●
Pre-collision warning objects Vehicle speed
Pedestrians Approx. 20 to 40 mph (30 to 65 km/h)
objects Vehicle speed Relative speed between your
vehicle and object
Preceding vehicles Approx. 3 to 110 mph (5 to
180 km/h) Approx. 3 to 110 mph (5 to
180 km/h)
Bicyclists and pedestrians Approx. 3 to 50 mph (5 to
80 km/h) Approx. 3 to 50 mph (5 to
80 km/h)

2134-5. Using the driving support systems
LS500_OM_(U)_1810 4
Driving • 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 incl ement 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 vehicle, pedestrian or
bicyclist 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
• When driving in a lo cation 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/r ight 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 (sha rp incline/decline)
• Pedestrians and bicyclists which are not
illuminated by the head lights 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.)

2174-5. Using the driving support systems
LS500_OM_(U)_1810 4
Driving ■
Enabling/disabling the pre-colli-
sion system
The pre-collision system can be
enabled/disabled on (  P.80) of
the multi-information display. The system is automa tically 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.
■
Changing the pre-collision warn-
ing timing
The pre-collision warning timing can
be changed on (  P.80) of the
multi-information display. The warning timing setting is retained
when the engine switch is turned off. How-
ever, if the pre-collisio n system is disabled
and re-enabled, the operation timing will
return to the default setting (middle).WARNING●
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

2214-5. Using the driving support systems
LS500_OM_(U)_1810 4
Driving • 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 detect able object is hid-
den by an object, such as large baggage,
an umbrella, or guardrail
• When multiple dete ctable 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
• 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 incl ement 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 de tectable 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/r ight 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

224 4-5. Using the driving support systems
LS500_OM_(U)_1810 left/right turn immediat ely 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 lo cation where there
are objects which reflect radar, such as
vehicles, guardrails, walls, traffic signs,
etc.●
When making a left/rig ht turn in front of
an approaching vehicle
●
When passing an oncoming vehicle●
When being overtake n 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 si de 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 (sha rp incline/decline)●
When driving around a sharp curve or on
an undulating road ●
If a vehicle is approach ing 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

2314-5. Using the driving support systems
LS500_OM_(U)_1810 4
Driving
Press the LTA switch to turn the LTA
system on. The LTA indicator illuminates and a mes-
sage is displayed on the multi-information
display.
Press the LTA switch again to turn the LTA
system off.
When the LTA system is turned on or off,
operation of the LTA system continues in
the same condition the next time the
engine is started. ■
Lane change assist function (vehi-
cles with Lexus Safety System + A)
Hold the turn signal lever partway
(lane change position) for approxi-
mately 1 second.(  P.173)
The direction you are signaling will be dis-
played on the multi-information display.
LTA indicator The illumination condition of the indicator
informs the driver of the system operation
status.Turning LTA system on
Indications on multi-information
display
A

242 4-5. Using the driving support systems
LS500_OM_(U)_1810 increased or decreased as follows: 
For the U.S. mainland, 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 1mph (1.6 km/h) *1
or 1 km/h (0.6 mph) *2

increments for as long as the switch is held 
For Canada, Guam and Puerto Rico 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.244), 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 is turned to IGNITION ON mode.
If a vehicle is running ahead of you, the pre-
ceding vehicle mark will also be dis-
played.
Select a distance from the table below.
Note that the distances shown corre-
spond to a vehicle speed of 50 mph
(80 km/h). Vehicle-to-vehicle distance
increases/decreases in accordance
with vehicle speed. When the vehicle is
stopped by system control, the vehicle
stops at a certain vehicle-to-vehicle
distance depending on the situation.Changing the vehicle-to-vehicle
distance (vehicle-to-vehicle dis-
tance control mode) Vehicle-to-vehicle distance set-
tings (vehicle-to-vehicle dis-
tance control mode)
Distance
options Vehicle-to-vehicle dis-
tance
Long Approximately 160 ft. (50
m) A

2494-5. Using the driving support systems
LS500_OM_(U)_1810 4
Driving turn, etc.■
Conditions in whic h 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.●
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.●
Side road speed signs may be detected
and displayed (if positioned in sight of the
front camera) while the vehicle is travel-
ing on the main road.
●
Roundabout exit road speed signs may
be detected and displayed (if positioned
in sight of the front camera) while travel-
ing on a roundabout.
●
The front of the vehicle is raised or low-
ered due to the carried load.
●
The surrounding brightness is not suffi-
cient or changes suddenly.
●
When a sign intended for trucks, etc. is
recognized. ■
Speed limit sign display
If the engine switch wa s last turned off while
a speed limit sign was displayed on the
multi-information display, the same sign dis-
plays again when the engine switch is
turned to IGNITION ON mode. ■
Customization
Some functions can be customized. (Cus-
tomizable features:  P.466)

256 4-5. Using the driving support systems
LS500_OM_(U)_1810 ■
Adjusting the buzzer volume
The buzzer volume can be adjusted on
the multi-information display. The vol-
ume of buzzers for the intuitive parking
assist, RCTA function and RCD func-
tion will be adjusted simultaneously.
Use the meter control switches to
change settings. (  P.81)
1 Press or to select .
2 Press or to select “PKSA”
and then press .
3 Press or to select and
then press .Each time the switch is pressed, the volume
level will change between 1, 2, and 3. ■
Muting a buzzer
A mute button will be displayed on the
multi-information display when an
object or pedestrian is detected. To
mute the buzzer, press .
The buzzers for the intuitive parking
assist, RCTA function and RCD func-
tion will be muted simultaneously.
Mute will be canceled automatically in
the following situations:
 When the shift position is changed.
 When the vehicle speed exceeds a
certain speed.
 When the operating function is tem-
porarily canceled.
 When the operating function is dis-
abled manually.
 When the engine switch is turned off.
Setting the buzzer volume