tow LEXUS LS500 2019 Service Manual

266 4-5. Using the driving support systems
LS500_OM_(U)_1810 ■
The RCTA function is operational when
The RCTA function operates when all of the
following conditions are met: ●
The engine switch is in IGNITION ON
mode.●
The RCTA function is on.●
The shift position is in R.●
The vehicle speed is less than approxi-
mately 5 mph (8 km/h).●
The approaching vehicle speed is
between approximately 5 mph (8 km/h)
and 18 mph (28 km/h).■
Setting the buzzer volume
The buzzer volume can be adjusted on the
multi-information display. (  P.256)■
Conditions under which the RCTA func-
tion will not detect a vehicle
The RCTA function is not designed to
detect the following types of vehicles and/or
objects: ●
Vehicles approaching from directly
behind●
Vehicles backing up in a parking space
next to your vehicle●
Vehicles that the sensors cannot detect
due to obstructions
●
Guardrails, walls, signs, parked vehicles
and similar stationary objects *
●
Small motorcycles, bicycles, pedestrians,
etc. *
●
Vehicles moving away from your vehicle
●
Vehicles approaching from the parking
spaces next to your vehicle *
*
: Depending on the conditions, detection
of a vehicle and/or object may occur. ■
Conditions under which the RCTA func-
tion may not function correctly ●
The RCTA function may not detect vehi-
cles correctly in the following situations:
• When a sensor is misaligned due to a
strong impact to the sensor or its sur-
rounding area
• When mud, snow, ice, a sticker, etc. is
covering a sensor or its surrounding area
on the rear bumper
• When driving on a road surface that is
wet with standing water during bad
weather, such as heavy rain, snow, or fog
• When multiple vehicles are approaching
with only a small gap between each vehi-
cle
• If a vehicle is approaching the rear of
your vehicle rapidly
• When a towing eyelet is installed to the
rear of the vehicle.
• When backing up on a slope with a sharp
change in grade
• When backing out of a shallow angle
parking spot
• Immediately after the RCTA function is
turned on
• Immediately after the engine is started

2674-5. Using the driving support systems
LS500_OM_(U)_1810 4
Driving with the RCTA function on
• When the sensors cannot detect a vehi-
cle due to obstructions
●
Instances of the RCTA function unneces-
sarily detecting a vehicle and/or object
may increase in the following situations:
• When a vehicle passes by the side of your
vehicle
• When the parking space faces a street
and vehicles are being driven on the
street
• When the distance between your vehicle
and metal objects, such as a guardrail,
wall, sign, or parked vehicle, which may
reflect electrical waves toward the rear of
the vehicle, is short
• When a towing eyelet is installed to the
rear of the vehicle *
: If equipped
Pedestrian detection icon Displayed automatically when a pedestrian
is detected.
RCD OFF icon When the RCD function is disabled, the
RCD OFF icon illuminates. (Each time the
engine switch is turned off then changed to
IGNITION ON mode, the RCD function
will be enabled automatically.)
Use the meter control switches to
enable/disable the RCD function.
(  P.81)
1 Press or to select .RCD (Rear Camera Detec-
tion) function *
When the vehicle is backing up, the
rear camera detection function can
detect pedestrians in the detection
area behind the vehicle. If a pedes-
trian is detected, a buzzer will
sound and an icon will be displayed
on the Center Display to inform the
driver of the pedestrian.
Center Display
Turning the RCD function on/off A
B

2694-5. Using the driving support systems
LS500_OM_(U)_1810 4
Driving • Pedestrians who are bending forward or
squatting
• Pedestrians who are lying down
• Pedestrians who are running
• Pedestrians who suddenly enter the
detection area
• People riding a bicycle, skateboard, or
other light vehicle
• Pedestrians wearing oversized clothing
such as a rain coat, long skirt, etc., making
their silhouette obscure
• Pedestrians whose body is partially hid-
den by an object, such as a cart or
umbrella
• Pedestrians which are obscured by dark-
ness, such as at night●
In some situations, such as the following,
pedestrians may not be detected by the
rear camera detection function, prevent-
ing the function from operating properly:
• When backing up in inclement weather
(rain, snow, fog, etc.)
• When the rear camera is obscured (dirt,
snow, ice, etc. are attached) or scratched
• When a very bright light, such as the sun,
or the headlights of another vehicle,
shines directly into the rear camera
• When backing up in a place where the
surrounding brightness changes sud-
denly, such as at the entrance or exit of a
garage or underground parking lot
• When backing up in a dim environment
such as during dusk or in an underground
parking lot●
Even though there are no pedestrians in
the detection area, some objects, such as
the following, may be detected, possibly
causing the rear camera detection func-
tion to operate.
• Three dimensional objects, such as a
pole, traffic cone, fence, or parked vehi-
cle
• Moving objects, such as a car or motor-
cycle
• Objects moving toward your vehicle
when backing up, such as flags or pud-
dles (or airborne matter, such as smoke,
steam, rain, or snow)
• Cobblestone or gravel roads, tram rails,
road repairs, white lines, pedestrian
crossings or fallen leaves on the road
• Metal covers (gratings), such as those
used for drainage ditches • Objects reflected in a puddle or on a wet
road surface
• The roadside or bumps on the road
•Shadows on the road ●
In some situations, such as the following,
the rear camera detection function may
operate even though there are no pedes-
trians in the detection area.
• When backing up toward the roadside or
a bump on the road
• If the vehicle is signif icantly tilted, such as
when carrying a heavy load
• When backing up toward an
incline/decline
• If the suspension has been modified or
tires of a size othe r than specified are
installed
• If the rear of the vehicle is raised or low-
ered due to the carried load
• If an electronic component, such as a
backlit license plate or rear fog light, is
installed near the rear camera
• If a bumper protector, such as an addi-
tional trim strip, is installed to the rear
bumper
• If the orientation of the rear camera has
been changed
• If a towing eyelet is in stalled to the rear of
the vehicle
• When water is flowing over the rear cam-
era lens
• When the rear camera is obscured (dirt,
snow, ice, etc. are at tached) or scratched
• If there is a flashing light in the detection
area, such as the emergency flashers of
another vehicle ●
Situations in which the rear camera
detection function may be difficult to
notice
• If buzzer may be difficult to hear if the
surrounding area is noisy, the volume of
the audio system volume is high, the air
conditioning system is being used, etc.
• If the temperature in the cabin is
extremely high or low, the audio system
screen may not operate correctly.

278 4-5. Using the driving support systems
LS500_OM_(U)_1810 ■
The Parking Support Brake function
(static object) will operate when
The function will operate when the PKSB
OFF indicator is not illuminated or flashing
(  P.69, 70) and all of the following condi-
tions are met: ●
Engine output restriction control
• The Parking Support Brake is enabled.
• The vehicle speed is 9 mph (15 km/h) or
less.
• There is a static ob ject in the traveling
direction of the vehicle and 6 to 13 ft. (2
to 4 m) away.
• The Parking Support Brake determines
that a stronger-than-normal brake opera-
tion is necessary to avoid a collision. ●
Brake control
• Engine output restriction control is oper-
ating.
• The Parking Support Brake determines
that an immediate brake operation is nec-
essary to avoid a collision.
■
The Parking Support Brake function
(static objects) will stop operating when
The function will stop operating if any of the
following conditions are met:
●
Engine output restriction control
• The Parking Support Brake is disabled.
• The system determines that the collision WARNING●
If the area around a radar sensor is
subjected to an impact, the system
may not operate properly due to a
sensor malfunction. Have the vehicle
inspected by your Lexus dealer.■
Handling the suspension
Do not modify the suspension, as
changes to the height or inclination of the
vehicle may prevent the sensors from
detecting objects correctly or cause the
system to not operate or operate unnec-
essarily. ■
If the Parking Support Brake function
(static objects) operates unnecessar-
ily, such as at a railroad crossing
In the event that the Parking Support
Brake function (static objects) operates
unnecessarily, such as at a railroad cross-
ing, brake control w ill be canceled after
approximately 2 seconds, allowing you
to proceed forward and leave the area,
brake control can also be canceled by
depressing the brake pedal. Depressing
the accelerator pedal after brake control
is canceled will allow you to proceed for-
ward and leave the area. ■
Notes when washing the vehicle
Do not apply intensive bursts of water or
steam to the sensor area.
Doing so may result in the sensor mal-
functioning.
●
When using a high pressure washer to
wash the vehicle, do not spray the sen-
sors directly, as doing so may cause a
sensor to malfunction.
●
When using steam to clean the vehicle,
do not direct steam too close to the
sensors as doing so may cause a sen-
sor to malfunction.
■
When to disable the Parking Support
Brake
In the following situations, disable the
Parking Support Brake as the system
may operate even though there is no
possibility of a collision. ●
When inspecting the vehicle using a
chassis roller, chassis dynamo or free
roller ●
When loading the vehicle onto a boat,
truck or other transport vessel ●
If the suspension has been modified or
tires of a size othe r than specified are
installed ●
If the front of the vehicle is raised or
lowered due to the carried load ●
When equipment that may obstruct a
sensor is installed, such as a towing
eyelet, bumper protector (an addi-
tional trim strip, etc.), bicycle carrier, or
snow plow ●
When using an automatic car wash

2794-5. Using the driving support systems
LS500_OM_(U)_1810 4
Driving has become avoidable with normal brake
operation.
• The static object is no longer 6 to 13 ft. (2
to 4 m) away from the vehicle or in the
traveling direction of the vehicle.●
Brake control
• The Parking Support Brake is disabled.
• Approximately 2 seconds have elapsed
since the vehicle was stopped by brake
control.
• The brake pedal is depressed after the
vehicle is stopped by brake control.
• The static object is no longer 6 to 13 ft. (2
to 4 m) away from the vehicle or in the
traveling direction of the vehicle.■
Re-enabling the Parking Support Brake
function (static objects)
 P.275■
Detection range of the Parking Support
Brake function (static objects)
The detection range of the Parking Support
Brake function (static objects) differs from
the detection range of the intuitive parking
assist. (  P.261) Therefore, even if the intui-
tive parking assist de tects an object and
provides a warning, the Parking Support
Brake function (static objects) may not start
operating. ■
Objects that the Parking Support Brake
function (static obje cts) may not detect
The sensors may not be able to detect cer-
tain objects, such as the following: ●
Pedestrian●
Cotton cloth, snow, and other materials
that are poor reflectors of ultrasonic
waves●
Objects which are not perpendicular to
the ground, are not perpendicular to the
traveling direction of the vehicle, are
uneven or are waving
●
Low objects
●
Thin objects such as wires, fences, ropes
and signposts
●
Objects that are extremely close to the
bumper
●
Sharply-angled objects
●
Tall objects with upper sections project-
ing outwards in the direction of your vehi- cle ■
Intuitive parking assist buzzer
Regardless of whether the intuitive parking
assist system is enabled or not (  P.258), if
the Parking Support Brake function (static
objects) is enabled (  P.271), the front or
rear sensors detect an object and brake
control is performed, the intuitive parking
assist buzzer will sound to notify the driver
of the approximate distance to the object. ■
Situations in which the Parking Support
Brake function (static objects) may
operate even if there is no possibility of a
collision
In some situations, such as the following, the
Parking Support Brake function (static
objects) may operate even though there is
no possibility of a collision. ●
Vehicle surroundings
• When driving on a narrow road
• When driving on a gravel road or in an
area with tall grass
• When driving toward a banner, flag,
low-hanging branch or boom barrier
(such as those used at railroad crossings,
toll gates and parking lots)
• When driving on a narrow path sur-
rounded by a structure, such as in a tun-

284 4-5. Using the driving support systems
LS500_OM_(U)_1810 ●
Objects which are extremely close to a
radar sensor●
Vehicles which are approaching from the
right or left at the re ar of the vehicle at a
traveling speed of less than approxi-
mately 5 mph (8 km/h)●
Vehicles which are approaching from the
right or left at the re ar of the vehicle at a
traveling speed of more than approxi-
mately 15 mph (24 km/h)■
PKSB buzzer
If the Parking Support Brake is enabled and
brake control is performed, a buzzer will
sound to notify the driver. ■
Situations in which the system may
operate even though there is no possi-
bility of a collision
In some situations such as the following, the
Parking Support Brake function
(rear-crossing vehicles) may operate even
though there is no possibility of a collision. ●
When the parking space faces a street
and vehicles are being driven on the
street
●
When a detected vehicle turns while
approaching the vehicle
●
When a vehicle passes by the side of your vehicle
●
When the distance between your vehicle
and metal objects, such as a guardrail,
wall, sign, or parked vehicle, which may
reflect electrical waves toward the rear of
the vehicle, is short
●
When there are spinning objects near
your vehicle such as the fan of an air con-
ditioning unit ●
When water is spla shed or sprayed
toward the rear bumper, such as from a
sprinkler ■
Situations in which the Parking Support
Brake function (rear-crossing vehicles)
may not operate properly
In some situations, such as the following, the
radar sensors may not detect an object and
this function may not operate properly
●
Stationary objects
●
When a sensor or the area around a sen-
sor is extremely hot or cold
●
If the rear bumper is covered with ice,
snow, dirt, etc.
●
When it is raining he avily or water strikes
the vehicle
●
If the vehicle is significantly tilted

2854-5. Using the driving support systems
LS500_OM_(U)_1810 4
Driving ●
When equipment that may obstruct a
sensor is installed, such as a towing eye-
let, bumper protector (an additional trim
strip, etc.), bicycle carrier, or snow plow●
If the suspension has been modified or
tires of a size other than specified are
installed●
If the front of the vehicle is raised or low-
ered due to the carried load●
If an electronic component, such as a
backlit license plate (especially fluores-
cent type), fog lights, fender pole or wire-
less antenna is installed near a radar
sensor●
If the orientation of a radar sensor has
been changed●
When multiple vehicles are approaching
with only a small gap between each vehi-
cle●
If a vehicle is approaching the rear of
your vehicle rapidly ●
Situations in which the radar sensor may
not detect a vehicle
• When a vehicle approaches from the
right or left at the rear of the vehicle while
you are turning while backing up
• When turning while backing up
• When backing out of a shallow angle
parking spot • When backing up on a slope with a sharp
change in grade
• When a vehicle turns into the detection
area

288 4-5. Using the driving support systems
LS500_OM_(U)_1810 • People riding a bicycle, skateboard, or
other light vehicle
• Pedestrians wearing oversized clothing
such as a rain coat, long skirt, etc., making
their silhouette obscure
• Pedestrians whose body is partially hid-
den by an object, such as a cart or
umbrella
• Pedestrians which are obscured by dark-
ness, such as at night●
In some situations, such as the following,
pedestrians may not be detected by the
Parking Support Brake function (rear
pedestrians), preventing the function
from operating properly:
• When backing up in inclement weather
(rain, snow, fog, etc.)
• When the rear camera is obscured (dirt,
snow, ice, etc. are attached) or scratched
• When a very bright light, such as the sun,
or the headlights of another vehicle,
shines directly into the rear camera
• When backing up in a place where the
surrounding brightness changes sud-
denly, such as at the entrance or exit of a
garage or underground parking lot
• When backing up in a dim environment
such as during dusk or in an underground
parking lot●
Even though there are no pedestrians in
the detection area, some objects, such as
the following, may be detected, possibly
causing the Parking Support Brake func-
tion (rear pedestri ans) to operate.
• Three dimensional objects, such as a
pole, traffic cone, fence, or parked vehi-
cle
• Moving objects, such as a car or motor-
cycle
• Objects moving toward your vehicle
when backing up, such as flags or pud-
dles (or airborne matter, such as smoke,
steam, rain, or snow)
• Cobblestone or gravel roads, tram rails,
road repairs, white lines, pedestrian
crossings or fallen leaves on the road
• Metal covers (gratings), such as those
used for drainage ditches
• Objects reflected in a puddle or on a wet
road surface
• The roadside or bumps on the road
•Shadows on the road
●
In some situations, such as the following, the Parking Support Brake function (rear
pedestrians) may operate even though
there are no pedestrians in the detection
area.
• When backing up toward the roadside or
a bump on the road
• If the vehicle is signif icantly tilted, such as
when carrying a heavy load
• When backing up toward an
incline/decline
• If the suspension has been modified or
tires of a size othe r than specified are
installed
• If the rear of the vehicle is raised or low-
ered due to the carried load
• If an electronic component, such as a
backlit license plate or rear fog light, is
installed near the rear camera
• If a bumper protector, such as an addi-
tional trim strip, is installed to the rear
bumper
• If the orientation of the rear camera has
been changed
• If a towing eyelet is in stalled to the rear of
the vehicle
• When water is flowing over the rear cam-
era lens
• When the rear camera is obscured (dirt,
snow, ice, etc. are at tached) or scratched
• If there is a flashing light in the detection
area, such as the emergency flashers of
another vehicle

2914-5. Using the driving support systems
LS500_OM_(U)_1810 4
Driving *
:If equipped
■
Situations in which the vehicle height
control may not operate properly●
In the following situations, the vehicle
height may change slowly or may not
change to the correct height:
• When the vehicle comes into contact
with snow, ice, stone, etc.
• When the ambient temperature is low
• When the accumulator tank pressure is
low●
In the following situations, the vehicle
height may not change:
• If the hood or trunk is not fully closed
• If the brake pedal depressed and the
vehicle is stopped
• When the vehicle is on a significantly
uneven or undulating road
• When the vehicle is on a slanted road or a
slope
■
Operating sound of the air suspension
compressor and valves
When the vehicle height is changed, such
as due to passengers entering the vehicle or
cargo being loaded, or when the vehicle
height is changed using the vehicle height
adjustment switch, the air suspension com-
pressor and valves may operate and a sound may be heard. This does not indicate
a malfunction. ■
When the accumulator tank pressure is
low
When the accumulator tank pressure is low,
the air suspension compressor and valves
may operate repeatedly even though the
vehicle height is not being changed. This
does not indicate a malfunction.
Electronically modulated air
suspension *
The height of the vehicle when driv-
ing can be selected using the vehi-
cle height adjustment switch. The
selected height level will be main-
tained regardless of the number of
passengers or weight of cargo.
Additionally, setti ngs of the follow-
ing functions can be changed:
 Enabling/Disabling controls of
access mode
 Temporarily disabling vehicle
height control WARNING■
Situations in whic h the operation of
the electronically modulated air sus-
pension should be temporarily dis-
abled
In the following situations, make sure to
temporarily disable all functions of the
vehicle height control of the electroni-
cally modulated air suspension and then
stop the engine. Otherwise, the vehicle
height may change and part of your body
may be caught under the vehicle, possi-
bly causing injury. ●
When the vehicle is parked on a curb ●
If any of the wheels is not touching the
ground ●
If the vehicle needs to be jacked up
●
If the vehicle is to be tied down
●
If the vehicle is to be towed
■
Vehicle height control precautions
In the following situations, make sure to
check the safety of the area around the
vehicle, as the vehicle height may change
and part of someone’s body may be
caught in the vehicle, possibly causing
injury or the vehicle may be damaged.
●
When opening a door
●
When unlocking the doors using the
smart access system with push-button
start
●
When changing the vehicle height
using the vehicle height adjustment
switch

3055-1. Remote Touch/Display
LS500_OM_(U)_1810 5
Interior features  Double tap Tap the touchpad twice, quickly. Select the
button on the screen.
 Flick Quick and short movement along the
touchpad with you finger. Move the list
screen.
 Pinch in/Pinch out Slide fingers toward each other or apart on
the touchpad. Change the scale of the
map. NOTICE■
To prevent damage to the Remote
Touch
Observe the following precautions. Fail-
ure to do so may cause damage to the
Remote Touch. ●
Do not allow food, liquid, stickers or lit
cigarettes to contact the Remote
Touch. ●
Do not subject the Remote Touch to
excessive pressure or strong impact. ●
Do not push the touchpad with a
strong force or use a sharp pointed
object to operate the pad.