2021 LEXUS LS500 sensor

271-1. For safe use
1
For safety and security
1Push the seat belt shoulder anchor
down while pressing the release
button .
2 Push the seat belt shoulder anchor
up.
Move the height adjuster up and down as
needed until yo u hear a click.
The pretensioners help the seat belts to
quickly restrain the occupants by
retracting the seat belts when the vehi-
cle is subjected to certain types of
severe frontal or side collision or a
vehicle rollover.
The pretensioners do not activate in the event of a minor frontal impact, a minor
side impact or a rear impact.
■Replacing the belt after the preten-
sioner has been activated
If the vehicle is involved in multiple colli-
sions, the pretensioner will activate for the
first collision, but will not activate for the
second or subsequent collisions.
Adjusting the seat belt shoulder
anchor height (front seats)
WARNING
■Adjustable shoulder anchor
Always make sure th e shoulder belt is
positioned across the center of your
shoulder. The belt should be kept away
from your neck, but not falling off your
shoulder. Failure to do so could reduce
the amount of protection in an accident
and cause death or serious injuries in the
event of a sudden stop, sudden swerve or
accident.
Seat belt pretensioners (front
and outboard rear seats)
A
WARNING
■Seat belt pretensioners
Observe the following precautions to
reduce the risk of in jury in the event of
sudden braking, sudden swerving or an
accident.
Failure to do so may cause death or seri-
ous injury.
●Do not place anything, such as a cush-
ion, on the front passenger’s seat.
Doing so will disperse the passenger’s
weight, which prevents the sensor
from detecting the passenger’s weight
properly. As a result , the seat belt pre-
tensioner for the front passenger’s seat
may not activate in the event of a colli-
sion.
●If the pretensioner has activated, the
SRS warning light will come on. In that
case, the seat belt cannot be used
again and must be replaced at your
Lexus dealer.

301-1. For safe use
• Can help protect primarily the head of occupants in the outer seats
• Can help prevent the occupants from being thrown from the vehicle in the event of vehi- cle rollover
SRS seat cushion airbags (if equipped)
Can help restrain the power rear seat occupants
■SRS airbag system components
Front passenger occupant classifi cation system (ECU and sensors)
Side impact sensors (front door)
Knee airbags
Front passenger airbag
Curtain shield airbags
“AIR BAG ON” and “AIR BAG OFF” indicator lights
Front side airbags
Side impact sensors (front)
SRS warning light
Rear side airbags
Seat belt pretensioners
Driver airbag
Seat cushion airbags (if equipped)
Rear seat belt buckle switches (if equipped)
Side impact sensors (rear)
Driver’s seat position sensor
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311-1. For safe use
1
For safety and security
Driver’s seat belt buckle switch
Airbag sensor assembly
Front impact sensors
Pop Up Hood computer assembly
Your vehicle is equipped with ADVANCED AIRBAGS designed based on the US
motor vehicle safety standards (FMVSS208). The airbag sensor assembly (ECU)
controls airbag deployment based on information obtained from the sensors etc.
shown in the system components diagram above. This information includes crash
severity and occupant information. As the airbags deploy, a chemical reaction in
the inflators quickly fills the airbags with no n-toxic gas to help restrain the motion of
the occupants.
■If the SRS airbags deploy (inflate)
●Slight abrasions, burns, bruising etc., may
be sustained from SRS airbags, due to the
extremely high speed deployment (infla-
tion) by hot gases.
●A loud noise and white powder will be
emitted.
●Parts of the airbag module (steering
wheel hub, airbag cover and inflator) as
well as the seats, parts of the front and
rear pillars, and roof side rails, may be hot
for several minutes. The airbag itself may
also be hot.
●The windshield may crack.
●All of the doors will be unlocked.
(  P.103)
●The brakes and stop lights will be con-
trolled automatically. ( P.305)
●The interior lights will turn on automati-
cally. ( P.343)
●The emergency flashers will be turned on
automatically. ( P.418)
●Fuel supply to the engine will be stopped.
( P.426)
●For Lexus Enform Safety Connect sub-
scribers, if any of the following situations
occur, the system is designed to send an
emergency call to the response center,
notifying them of the vehicle’s location
(without needing to push the “SOS” but-
ton) and an agent will attempt to speak
with the occupants to ascertain the level of emergency and assistance required. If
the occupants are unable to communi-
cate, the agent automatically treats the
call as an emergency and helps to dis-
patch the necessary emergency services.
(
 P.58)
• An SRS airbag is deployed.
• A seat belt pretensioner is activated.
• The vehicle is involved in a severe rear-end collision.
■PCS-linked SRS airbag deployment
control (vehicles with Lexus Safety Sys-
tem + A)
If the PCS (Pre-Collision System) deter-
mines that the possibility of a side collision is
high, the SRS side and curtain shield air-
bags will be prepared to operate.
■SRS airbag deployment conditions (SRS
front airbags/SRS seat cushion airbags)
●The SRS front airbags and SRS seat cush-
ion airbags will deploy in the event of an
impact that exceed s the set threshold
level (the level of fo rce corresponding to
an approximately 12 - 18 mph [20 - 30
km/h] frontal collision with a fixed wall
that does not move or deform).
However, this threshol d velocity will be
considerably higher in the following situa-
tions:
• If the vehicle strikes an object, such as a parked vehicle or sign pole, which can
move or deform on impact
• If the vehicle is involved in an underride
collision, such as a collision in which the
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361-1. For safe use
WARNING
●Do not attach anything to or lean any-
thing against areas such as the dash-
board, steering wheel pad and lower
portion of the instrument panel.
These items can become projectiles
when the SRS driver, front passenger
and knee airbags deploy.
●Do not attach anything to areas such
as a door, windshield, side windows,
front or rear pillar, roof side rail and
assist grip.
●Do not hang coat hangers or hard
objects on the coat hooks. All of these
items could become projectiles and
may cause death or serious injury,
should the SRS curtain shield airbags
deploy.
●If a vinyl cover is put on the area where
the SRS knee airbag will deploy, be
sure to remove it.
●Do not use seat accessories which
cover the parts where the SRS side air-
bags inflate as they may interfere with
inflation of the SRS airbags. Such
accessories may prevent the side air-
bags from activating correctly, disable
the system or cause the side airbags to
inflate accidentally, resulting in death
or serious injury.
●Do not strike or apply significant levels
of force to the area of the SRS airbag
components or the front doors. Doing
so can cause the SRS airbags to mal-
function.
●Do not touch any of the component
parts immediately after the SRS air-
bags have deployed (inflated) as they
may be hot.
●If breathing becomes difficult after the
SRS airbags have deployed, open a
door or window to allow fresh air in, or
leave the vehicle if it is safe to do so.
Wash off any residue as soon as possi-
ble to prevent skin irritation.
●If the areas where the SRS airbags are
stored, such as the steering wheel pad
and front and rear pillar garnishes are
damaged or cracked, have them
replaced by your Lexus dealer.
●Do not place anything, such as a cush-
ion, on the front passenger’s seat.
Doing so will disperse the passenger’s
weight, which prevents the sensor
from detecting the passenger’s weight
properly. As a result, the SRS front air-
bags for the front passenger may not
deploy in the event of a collision.
■Modification and disposal of SRS air-
bag system components
Do not dispose of your vehicle or per-
form any of the following modifications
without consulting your Lexus dealer.
The SRS airbags may malfunction or
deploy (inflate) accidentally, causing
death or serious injury.
●Installation, remova l, disassembly and
repair of the SRS airbags
●Repairs, modifications, removal or
replacement of the steering wheel,
instrument panel, dashboard, seats or
seat upholstery, front, side and rear pil-
lars, roof side rails, front door panels,
front door trims or front door speakers
●Modifications to the front door panel
(such as making a hole in it)

371-1. For safe use
1
For safety and security
Sensors
Hood
Lifters
■Pop Up Hood precautions
●Before scrapping your vehicle, make sure
to contact your Lexus dealer.
●The Pop Up Hood system cannot be
reused once it has operated. Have it
replaced by your Lexus dealer.
WARNING
●Repairs or modifications of the front
fender, front bumper, or side of the
occupant compartment
●Installation of a grille guard (bull bars,
kangaroo bar, etc.), snow plows,
winches or roof luggage carrier
●Modifications to the vehicle’s suspen-
sion system
●Installation of electronic devices such
as mobile two-way radios and CD
players
●Modifications to your vehicle for a per-
son with a physical disability
Pop Up Hood
In the event of a frontal collision
with a body, such as a pedestrian,
the Pop Up Hood system raises the
hood to reduce the possibility of a
serious impact to the pedestrian’s
head area by adding clearance to
the engine compartment.
When the sensors located at the
back of the front bumper detect a
frontal impact with a body, such as a
pedestrian, which meets or
exceeds the threshold level while
the vehicle is bein g driven within
the operational speed range, the
system operates.
System components
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381-1. For safe use
■PCS-linked Pop Up Hood operation
control
If the PCS (Pre-Collision System) deter-
mines that the possibility of a collision with a
pedestrian or bicyclist is high, the Pop Up
Hood will be prepared to operate.
■Pop Up Hood operational conditions
The Pop Up Hood will operate when the
vehicle detects an impact such as the fol-
lowing:
●The front bumper detects a frontal impact
equivalent to or grea ter than that of a
pedestrian while the vehicle being driven
within the operational speed range of
approximately 16 to 34 mph (25 to 55
km/h). (The system is operated by an
impact of threshold le vel or greater, even
in the case of a minor collision that may
not leave a trace on the front bumper.
Also, depending on the impact condi-
tions or vehicle speed, the system may
operate by a collision with a light or small
object or a small animal.)
●In other situations, such as the following
the system may operate when an impact
is applied to the lowe r part of the vehicle
or front bumper:
• Colliding with a curb
• Falling into a deep hole
•Landing hard
• Hitting the slope of a parking lot, an undulating road, a protruding object or
falling object
■Conditions under which the Pop Up
Hood may not operate properly
●If a pedestrian collides with the right or
left corner of the front bumper or the side
of the vehicle. As such impacts may be
difficult to detect, the system may not
operate.
●If the vehicle speed is not detected cor-
rectly, such as if the vehicle is sliding side-
ways, the system may not operate
properly.
■Conditions under which the Pop Up
Hood will not operate
The Pop Up Hood will not operate in the
following situations:
●Colliding with a lying person
●A frontal impact applied to the front
bumper while driving at speeds outside
of the operational speed range
●A side impact or rear impact
●A vehicle rollover (In some accident situ-
ations, the Pop Up Hood may operate.)
WARNING
■When the Pop Up Hood is operated
●Do not pull the hood lock release lever.
Doing so after the Pop Up Hood has
operated will further raise the hood
and may cause an injury. Do not drive
with the hood raised, as doing so may
block the driver’s vision, possibly caus-
ing an accident.
●Do not forcibly push down the hood.
As the popped up hood cannot be
lowered by hand, doing so may deform
the hood or cause an injury.
●If the Pop Up Hood has operated, have
it replaced by your Lexus dealer. If the
Pop Up Hood has operated, stop the
vehicle in a safe place and contact
your Lexus dealer.
●Do not touch the lifters immediately
after the Pop Up Hood has operated,
as the lifters may be hot and burn you.
NOTICE
■Pop Up Hood precautions
●Make sure to close the hood before
driving, as the system may not operate
properly if the hood is not fully closed.
●Make sure that all 4 tires are of the
specified size and inflated to the speci-
fied tire pressure. If tires of a different
size are used, the system may not
operate properly.
●If something has hit the area around
the front bumper, the sensors may be
damaged even if the Pop Up Hood has
not operated. Have the vehicle
inspected by your Lexus dealer.

391-1. For safe use
1
For safety and security
NOTICE
●Do not remove or repair the parts or
wiring of the Pop Up Hood, as doing
so may cause accidental operation or
prevent the system from operating
properly. If repair or replacement is
necessary, contact your Lexus dealer.
●Do not remove such components as
the front bumper, hood or suspension,
or replace them with non-genuine
parts, as doing so may prevent the sys-
tem from operating properly.
●Do not install anything to the front
bumper or hood, as doing so may pre-
vent the sensors from detecting an
impact correctly and prevent the sys-
tem from operating properly.
●Do not close the hood with force or
apply load to the lifters, as doing so
may damage the lifters and prevent the
system from operating properly.
●Do not modify the suspension, as
changes made to the vehicle height
may prevent the system from operat-
ing properly.

1023-2. Opening, closing and locking the doors and trunk
3-2.Opening, closing and locking the doors and trunk
■Smart access system with
push-button start
Carry the electronic key to enable this
function.
1 Grip the driver’s door handle to
unlock the door. Holding the
driver’s door ha ndle for approxi-
mately 2 seconds unlocks all the
doors. Grip any passenger door
handle to unlock all the doors.
*
Make sure to touch the sensor on the back
of the handle.
The doors cannot be unlocked for 3 sec-
onds after the doors are locked.
*: The door unlock settings can be changed.
2 Touch the lock sensor (indentation
on the upper part of the door han-
dle) to lock all the doors.
Check that the door is securely locked.
■Wireless remote control
1 Locks all the doors
Check that the door is securely locked.
2Unlocks all the doors
Pressing the button unlocks the driver’s
door. Pressing the button again within 5
seconds unlocks the other door.
Press and hold to open the windows
*1 and
moon roof
*1,2 or panoramic moon roof*1,2.
*1: This setting must be customized at your
Lexus dealer.
*2: If equipped
■Switching the door unlock function
It is possible to set which doors the entry
function unlocks using the wireless remote
control.
1 Turn the engine switch off.
2 When the indicator light on the key sur-
face is not on, press and hold ,
or for approximately 5
seconds while pre ssing and holding
.
The setting changes each time an operation
is performed, as shown below. (When
changing the setting continuously, release
the buttons, wait for at least 5 seconds, and
repeat step 2 .)
Doors
Unlocking and locking the doors
from the outside