2019 LEXUS LS500 change wheel

230 4-5. Using the driving support systems
LS500_OM_(U)_1810 ■
Lane centering function
This function is linked with dynamic
radar cruise control with full-speed
range and provides the required assis-
tance by operating the steering wheel
to keep the vehicle in its current lane. When dynamic radar cruise control with
full-speed range is not operating, the lane
centering function does not operate.
In situations where the white (yellow) lane
lines are difficult to see or are not visible,
such as when in a traffic jam, this function
will operate to help follow a preceding
vehicle by monitoring the position of the
preceding vehicle.
If the system detect s 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. Make sure to grip
the steering wheel firmly. ■
Lane change assist function (vehi-
cles with Lexus Safety System + A)
This function is linked to the dynamic
radar cruise control with full-speed
range and provides assistance for per-
forming lane changes by operating the
steering wheel when you hold the turn
signal lever partway (lane change posi-
tion).(  P.173)
When lane change assist function is
operating, the acceleration and decel-
eration of the vehicle is controlled
while the preceding vehicle and vehi-
cles driven in the lane toward which the
turn signal is oper ated are monitored.When the lane center ing function is not
operating, the lane change assist function
will not operate.
The lane change assist function should not
be operated when ch anging lanes on a
road that is diverging or merging.

232 4-5. Using the driving support systems
LS500_OM_(U)_1810 Illuminated in white: LTA system is operat-
ing.
Illuminated in green: Steering wheel assis-
tance of the steering assi st function or lane
centering function is operating.
Flashing in orange: Lane departure alert
function is operating.
Operation display of steering
wheel operation supportDisplayed when the mu lti-information dis-
play is switched to the driving assist system
information screen.
Indicates that steering wheel assistance of
the steering assist func tion or lane center-
ing function is operating.
Both outer sides of the lane are displayed:
Indicates that steering wheel assist of the
lane centering function is operating.
One outer side of the lane is displayed:
Indicates that steering wheel assist of the
steering assist function is operating.
Both outer sides of the lane are flashing:
Alerts the driver that their input is neces-
sary to stay in the center of the lane (lane
centering function).
Lane departure alert function dis-
playDisplayed when the mu lti-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 or a course *
. When the
vehicle departs from it s lane, the white line
displayed 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 a course *
or
is temporarily canceled. *
: Boundary between asphalt and the side
of the road, such as grass, soil, or a curb
Follow-up cruising display Displayed when the multi-information dis-
play is switched to th e driving assist system
information screen.
Indicates that steering assist of the lane
centering function is operating by monitor-
ing the position of a preceding vehicle.
When the follow-up cruising display is dis-
played, if the preceding vehicle moves,
your vehicle may move in the same way.
Always pay careful attention to your sur-
roundings and operate the steering wheel
as necessary to correct the path of the
vehicle and ensure safety.
■
Lane change assist function (vehi-
cles with Lexus Safety System + A)
 Lane change assist displayB
C D

2334-5. Using the driving support systems
LS500_OM_(U)_1810 4
Driving Indicates that steering wheel assist of the
lane change assist function is operating.
 Approaching vehicle warning dis-
play Indicates that an approaching vehicle is
detected in the adjacent lane. ■
Warning display (vehicles with
Lexus Safety System + A)
When the lane centering function is oper-
ating and the system determines that the
vehicle may depart from its lane due to a
sharp curve, etc., a warning display urging
the driver to operate the steering wheel,
will be displayed.
This display will also be displayed when
operation of the lane change assist func-
tion is canceled.
In some situations a warning display may
not be displayed. Some displays, which are the same as
those displayed on the multi-informa-
tion display, will be displayed. ■
LTA system curve display on the
head-up display
The curve display on the head-up display
changes according to the direction and
curvature of the curve.
■
Operation conditions of each function ●
Lane departure alert function
This function operates when all of the fol-
lowing conditions are met.
• LTA is turned on.
• Vehicle speed is ap proximately 32 mph
(50 km/h) or more. *1
• System recognizes white (yellow) lane
lines or a course *2
. (When a white [yel-
low] line or course *2
is recognized on
only one side, the system will operate
only for the recognized side.)
• Width of traffic lane is approximately 9.8
ft. (3 m) or more.
• Turn signal lever is not operated. (Except
when a vehicle is in the lane on the side
the turn signal was operated)
• Vehicle is not being driven around a
sharp curve.
• No system malfunctions are detected.
(  P.237) *1
: The function operates even if the vehi-Indications on head-up display
(vehicles with Lexus Safety Sys-
tem + A)

234 4-5. Using the driving support systems
LS500_OM_(U)_1810 cle speed is less than approximately 32
mph (50 km/h) when the lane center-
ing function is operating. *2
: Boundary between asphalt and the side
of the road, such as grass, soil, or a curb●
Steering assist function
This function operates when all of the fol-
lowing conditions are me t in addition to the
operation conditions for the lane depar-
ture alert function.
•Setting for “Steering Assist” in of the
multi-information display is set to “ON”.
(  P.80)
• Vehicle is not accelerated or decelerated
by a fixed amount or more.
• Steering wheel is not operated with a
steering force level su itable for changing
lanes.
• ABS, VSC, TRAC and PCS are not oper-
ating.
• TRAC or VSC is not turned off.
• Hands off steering wheel warning is not
displayed. (  P.236)●
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.80)
• 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.237)
●
Lane centering function
This function operates when all of the fol-
lowing conditions are met.
• LTA is turned on.
• Setting for “Steering Assist” and “Lane
Center” in of the multi-information
display are set to “ON”. (  P.80)
• This function recognizes white (yellow)
lane lines or the position of a preceding
vehicle (except when the preceding vehi-
cle is small, such as a motorcycle).
• The dynamic radar cruise control with full-speed range is operating in vehi-
cle-to-vehicle distance control mode.
• Width of traffic lane is approximately 10
to 13 ft. (3 to 4 m).
• Turn signal lever is not operated.
• Vehicle is not being driven around a
sharp curve.
• No system malfunctions are detected.
(  P.237)
• Vehicle does not ac celerate or deceler-
ate by a fixed amount or more.
• Steering wheel is not operated with a
steering force level su itable for changing
lanes.
• ABS, VSC, TRAC and PCS are not oper-
ating.
• TRAC or VSC is not turned off.
• Hands off steering wheel warning is not
displayed. (  P.236)
• The driver has one or both hands on the
steering wheel.
• The vehicle is being driven in the center
of a lane.
• Steering assist function is not operating. ●
Lane change assist fu nction (vehicles with
Lexus Safety System + A)
This function will operate when all of the
following conditions are met:
• The lane centering function is operating.
• “Lane Change Assist” is set to “ON” in
of the multi-information dis-
play.(  P.80)
• The vehicle speed is between approxi-
mately 57 and 85 mph (90 and 140
km/h).
• White (yellow) lane lines are detected by
the system.
• A broken white line is detected between
your vehicle and the lane toward which
the turn signal is operated.
• The turn signal lever is held partway (lane
change position) for approximately 1 sec-
ond.
• A vehicle is not overtaking your vehicle
or detected in the lane toward which the
turn signal is operated.
• The vehicle is being driven straight or
around a slight curve.
• The vehicle is not a ccelerating or decel-
erating more than a certain amount.
• The steering wheel is not being turned
sufficiently to perf orm a lane change.

2354-5. Using the driving support systems
LS500_OM_(U)_1810 4
Driving • ABS, VSC, TRAC and PCS are not oper-
ating.
• TRAC or VSC is not turned off.
• Hands off steering wheel warning is not
displayed. (  P.236)
• The dynamic radar cruise control with
full-speed range approach warning is not
operating.
• The lane departure alert function is not
operating.■
Temporary cancellation of functions●
When operation conditions are no longer
met, a function may be temporarily can-
celed. However, when the operation con-
ditions are met again, operation of the
function is automa tically restored.
(  P.233)●
If the operation conditions (  P.233) are
no longer met while the lane centering
function is operating, the steering wheel
may vibrate and the buzzer may sound to
indicate that the function has been tem-
porarily canceled. However, if the “Alert”
customization setting is set to ,
the system will notify the driver by vibrat-
ing the steering wheel instead of sound-
ing the buzzer.●
If the operating conditions (  P.233) are
no longer met, the lane change assist
function will be canceled. (vehicles with
Lexus Safety System + A)
If a message urging operation of the steer-
ing wheel is displayed, operate the steering
wheel. ■
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
operating or the function may not oper-
ate at all.
●
The steering control of the function is
overrided by the driver’s steering wheel
operation.
●
When the vehicle speed is approximately
31 mph (50 km/h) or less, the warning
display of the lane ce ntering function will
not operate.
●
Do not attempt to test the operation of the steering assist function. ●
The steering assist function may operate
when attempting to cut closely in front of
another vehicle while changing lanes.■
Lane departure alert function ●
The warning buzzer may be difficult to
hear due to external noise, audio play-
back, etc. Also, it may be difficult to feel
steering wheel vibrations due to the road
conditions, etc. ●
If the edge of the course *
is not clear or
straight, the lane departure alert function
may not operate. ●
It may not be possible for the system to
determine if there is a danger of a colli-
sion with a vehicle in an adjacent lane. ●
Do not attempt to test the operation of
the lane departure alert function. ●
This function may operate if, when chang-
ing lanes, your vehicle cuts closely in front
of another vehicle. *
: Boundary between asphalt and the side
of the road, such as grass, soil, or a curb ■
Lane change assist function (vehicles
with Lexus Safety System + A)
Depending on the vehicle speed, vehicle
condition, road conditions, or conditions of
the area around the vehicle, the lane
change assist function may not operate or it
may be difficult to recognize that it has
operated.
If steering control oper ation is excessive or
insufficient, it can be corrected by the
driver’s operation of the steering wheel.
In situations such as the following, the lane
change assist function may be canceled:
●
When the system no longer detects white
(yellow) lane lines
●
When the turn signal lever is operated
fully (right/left turn position)
●
When the vehicle speed is outside of the
operational range of the function
●
When the system detects operation of
the steering wheel, brake or accelerator
pedal by the driver
While the lane change assist function is

2754-5. Using the driving support systems
LS500_OM_(U)_1810 4
Driving Additionally, for vehicles with the Parking
Support Brake function, turn the steering
wheel fully to the left and right with the vehi-
cle stopped. ■
Re-enabling the Park ing Support Brake
To re-enable the Parking Support Brake
when it has been disabled due to operation
of the Parking Support Brake, either enable
the system again (  P.271), or turn the
engine switch off and then back to IGNI-
TION ON mode.
Additionally, if any of the following condi-
tions are met, the syst em will be re-enabled
automatically and the PKSB OFF indicator
will turn off: ●
The P shift position is selected●
The object is no longer detected in the
traveling direction of the vehicle●
The traveling direction of the vehicle
changes *
*
: Except when the Parking Support Brake
function (rear pedestrians) operated.

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

2954-5. Using the driving support systems
LS500_OM_(U)_1810 4
Driving automatically controlled to reduce the
vehicle speed and that helps reduce
the possibility of further damage due to
a secondary collision. ■
TRAC (Traction Control)
Helps to maintain drive power and pre-
vent the drive wheels from spinning
when starting the vehicle or accelerat-
ing on slippery roads ■
Hill-start assist control
Helps to reduce the backward move-
ment of the vehicle when starting on an
uphill ■
VGRS (Variable Gear Ratio Steer-
ing) (if equipped)
Adjusts the front wheel turning angle in
accordance with the vehicle speed and
steering wheel movement ■
DRS (Dynamic Rear Steering) (if
equipped)
Contributes to the turning characteris-
tics and responsiveness of the vehicle
by adjusting the rear wheel angle of the
vehicle in accordance with steering
wheel movement. ■
EPS (Electric Power Steering)
Employs an electric motor to reduce
the amount of effort needed to turn the
steering wheel. ■
Active stabilizer suspension sys-
tem (if equipped)
Reduces sway when cornering accord-
ing to steering wheel movement in
order to maintain a stable vehicle pos-
ture. ■
Adaptive Variable Suspension Sys-
tem (if equipped)
By independently controlling the
damping force of th e shock absorbers
for each of the 4 wheels according to
the road and driving conditions, this
system helps riding comfort with supe-
rior vehicle stability, and helps good
vehicle posture.
Also, the damping force changes
depending on the selected driving
mode. (  P.289) ■
LDH (Lexus Dynamic Handling
system) (if equipped)
Provides integrated control of the
VGRS, DRS and EPS. Contributes to
turning characteristics at low speeds,
responsiveness at medium speeds and
safety at high speeds by controlling the
steering angle of the front and rear
wheels in accordance with the steering
wheel operation and vehicle speed. ■
VDIM (Vehicle Dynamics Inte-
grated Management)
Provides integrated control of the
ABS, brake assist, TRAC, VSC,
hill-start assist control, EPS, VGRS (if
equipped), DRS (if equipped), active
stabilizer suspension system (if
equipped) and Adaptive Variable Sus-
pension System (if equipped)
Helps to maintain vehicle stability when
swerving on slippery road surfaces by
controlling the brakes, engine output,
steering assist, and steering ratio