2021 LEXUS LS500 ABS

641-4. Theft deterrent system
1-4.Theft deterrent system
The indicator light flashes after the
engine switch has been turned off to
indicate that the system is operating.
The indicator light stops flashing after
the engine switch has been turned to ACCESSORY or IGNITION ON
mode to indicate that the system has
been canceled.
■System maintenance
The vehicle has a maintenance-free type
engine immobilizer system.
■Conditions that may cause the system to
malfunction
●If the grip portion of the key is in contact
with a metallic object
●If the key is in close proximity to or touch-
ing a key to the security system (key with
a built-in transponder chip) of another
vehicle
■Certification for the en gine immobilizer system
Engine immobilizer system
The vehicle’s keys have built-in tran-
sponder chips that prevent the
engine from starting if a key has not
been previously registered in the
vehicle’s on-board computer.
Never leave the keys inside the
vehicle when you leave the vehicle.
This system is designed to help pre-
vent vehicle theft but does not
guarantee absolute security
against all vehicle thefts.
Operating the system

712-1. Instrument cluster
2
Vehicle status information and indicators
Warning lights inform the driver of mal-
functions in the indicated vehicle’s sys-
tems.
*1: These lights come on when the engine switch is turned to IGNITION ON
mode to indicate that a system check is
Warning lights
(U.S.A.)
Brake system warning light*1
(  P.427)
(red)
(Canada)
Brake system warning light*1
(  P.427)
(yellow)
Brake system warning light*1
(  P.427)
High coolant temperature
warning light
*2 (  P.427)
Charging system warning
light
*2 (  P.428)
Low engine oil pressure warn-
ing light
*2 (  P.428)
(U.S.A.)
Malfunction indicator lamp*1
(  P.428)
(Canada)
Malfunction indicator lamp*1
(  P.428)
SRS warning light
*1 (  P.428)
Pop Up Hood warning light
*1
(  P.429)
(U.S.A.)
ABS warning light*1 ( P.429)
(Canada)
ABS warning light*1 ( P.429)
Inappropriate pedal operation
warning light
*2 (  P.429)
(red)
Electric power steering system
warning light
*1 ( P.430)
(yellow)
Electric power st eering system
warning light
*1 (  P.430)
Low fuel level warning light
(  P.430)
Driver’s and front passenger’s
seat belt re minder light
(  P.430)
Rear passengers’ seat
belt reminder lights
(except F SPORT mod-
els) ( P.431)
Rear passengers’ seat belt
reminder lights (F SPORT mod-
els) ( P.431)
Tire pressure warning light
*1
(  P.431)
(orange)
LTA indicator ( P.431)
(flashes)
RCD OFF indicator (if
equipped) ( P.432)
(flashes or
illuminates)PCS warning light*1 (  P.432)
Slip indicator
*1 (  P.432)
(flashes)
(U.S.A.)
Parking brake indicator
(  P.433)
(flashes)
(Canada)
Parking brake indicator
(  P.433)
(flashes)
Brake hold operated indicator*1
(  P.433)

722-1. Instrument cluster
being performed. They will turn off after
the engine is started, or after a few sec-
onds. There may be a malfunction in a
system if the lights do not come on, or
turn off. Have the vehicle inspected by
your Lexus dealer.
*2: This light illuminates on the multi-infor-mation display.
The indicators inform the driver of the
operating state of the vehicle’s various
systems.
WARNING
■If a safety system warning light does
not come on
Should a safety system light such as the
ABS and SRS warning light not come on
when you start the engine, this could
mean that these systems are not available
to help protect you in an accident, which
could result in death or serious injury.
Have the vehicle inspected by your
Lexus dealer immediately if this occurs.
Indicators
Turn signal indicator ( P.185)
(U.S.A.)
Headlight indicator ( P.190)
(Canada)
Tail light indicator ( P.190)
Headlight high beam indicator
(  P.192)
AHB indicator ( P.193)
PCS warning light
*1, 2 (  P.218,
230)
Cruise control indicator
(  P.254)
Dynamic radar cruise control
indicator ( P.254)
Cruise control “SET” indicator
(  P.254)
(white)
LTA indicator ( P.244)
(green)
LTA indicator ( P.244)
(orange)
(flashes)LTA indicator ( P.244)
BSM outside rear view mirror
indicators
*1, 3 (if equipped)
(  P.264, 277)
BSM OFF indicator
*1, 2 (if
equipped) ( P.264)
Intuitive parking assist OFF indi-
cator
*1, 2(if equipped)
(  P.273)
RCTA OFF indicator
*1, 2 (if
equipped) ( P.277)
RCD OFF indicator
*2 (if
equipped) ( P.281)
PKSB OFF indicator
*1, 2 (if
equipped) ( P.285)
(flashes)
Slip indicator*1 ( P.305)
VSC OFF indicator
*1, 2
(  P.306)
High mode indicator (if
equipped) ( P.302)
Smart access system with
push-button start indicator
*4
(  P.174)
(U.S.A.)
Parking brake indicator
( P.186)

2164-5. Using the driving support systems
■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.)
■Active steering assist
If the system determines that the possi-
bility of a collision with an object, such
as a guardrail, or pedestrian is high,
even though the brakes are applied, and that the collision may be avoidable
through steering cont
rol, the system
will steer the vehicle automatically to
help avoid the collision or help reduce
the impact of the collision.
■Active Assist for seat belts (front
seats only)
If the system determines that the possi-
bility of a frontal collision is high, the
system will retract the seat belts. Addi-
tionally, the system may retract the seat
belts if the brakes are applied suddenly
or control of the vehicle is lost.
■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-collis ion seat function.
■Suspension control
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
When the system determines that the
possibility of a frontal collision is high
and the driver is op erating the steering
wheel, the LDH system ( P.305) will
control the turning angle of the front

2284-5. Using the driving support systems
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 ad justed, it may not be
moved by the pre-collision seat function.
■Suspension control
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
When the system determines that the
possibility of a frontal collision is high
and the driver is op erating 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.
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.231
• Conditions under which the system may not operate properly: P.233

2474-5. Using the driving support systems
4
Driving
*1: The function operates even if the vehi-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.82)
• 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.249)
●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.82)
• 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.250)
●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.82)
• 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.250)
• 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.249)
• The driver has one or both hands on the steering wheel. (vehicles with Lexus
Safety System + A)
• 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.82)
• 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.

2484-5. Using the driving support systems
• 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.249)
• The dynamic radar cruise control with
full-speed range approach warning is not
operating.
• The lane departure alert function is not
operating.
• The curve speed reduction function ( P.260) is not operating.
■Temporary cancelation 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.246)
●If the operation conditions ( P.246) 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.246) are
no longer met, the buzzer may sound to
indicate that the lane change assist func-
tion has been temporarily canceled.
(vehicles with Lexus Safety System + A)
■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.
●Even if the curve speed reduction func-
tion ( P.260) operates, the lane center-
ing function may not be able to drive the
vehicle around a curve successfully.
(vehicles with Lexus Safety System + A)
●The steering control of the function is
overridden by the driver’s steering wheel
operation.
●Do not attempt to test the operation of the steering assist function.
■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.
●Vehicle with BSM: It may not be possible
for the system to determine if there is a
danger of a collision with a vehicle in an
adjacent lane.
●Do not attempt to test the operation of
the lane departure alert function.
*: 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
operating, if the system detects that a vehi-
cle is quickly approaching in the lane
toward which the turn signal is operated,
the steering assist may slightly steer the
vehicle away from the la ne while a buzzer is
sounding, the steering wheel is vibrating,

2554-5. Using the driving support systems
4
Driving
WARNING
●Even when the system is functioning
normally, the condition of the preced-
ing vehicle as detected by the system
may differ from the condition
observed by the driver. Therefore, the
driver must always remain alert, assess
the danger of each situation and drive
safely. Relying solely on this system or
assuming the system ensures safety
while driving can lead to an accident,
resulting in death or serious injury.
●Switch the dynamic radar cruise con-
trol with full-speed range setting to off,
using the cruise co ntrol main switch
when not in use.
■Cautions regarding the driving assist
systems
Observe the following precautions, as
there are limitations to the assistance
provided by the system. Failure to do so
may cause an accident resulting in death
or serious injury.
●Assisting the driver to measure follow-
ing distance
The dynamic radar cruise control with
full-speed range is only intended to help
the driver in determining the following
distance between the driver’s own vehi-
cle and a designated vehicle traveling
ahead. It is not a me chanism that allows
careless or inattentive driving, and it is
not a system that can assist the driver in
low-visibility conditions.
It is still necessary for driver to pay close
attention to the vehicle’s surroundings.
●Assisting the driver to judge proper
following distance
The dynamic radar cruise control with
full-speed range determines whether the
following distance between the driver’s
own vehicle and a designated vehicle
traveling ahead is within a set range. It is
not capable of making any other type of
judgement. Therefore, it is absolutely
necessary for the driver to remain vigi-
lant and to determine whether or not
there is a possibility of danger in any
given situation.
●Assisting the driver to operate the
vehicle
The dynamic radar cruise control with
full-speed range does not include func-
tions which will prevent or avoid colli-
sions with vehicles ah ead of your vehicle.
Therefore, if there is ever any possibility
of danger, the driver must take immedi-
ate and direct control of the vehicle and
act appropriately in order to ensure the
safety of all involved.
■Situations unsuitable for dynamic
radar cruise control with full-speed
range
Do not use dynamic radar cruise control
with full-speed range in any of the follow-
ing situations. Doing so may result in
inappropriate speed control and could
cause an accident resulting in death or
serious injury.
●Roads where there are pedestrians,
cyclists, etc.
●In heavy traffic
●On roads with sharp bends
●On winding roads
●On slippery roads, such as those cov-
ered with rain, ice or snow
●On steep downhills, or where there
are sudden changes between sharp up
and down gradients
Vehicle speed may exceed the set
speed when driving down a steep hill.