light LEXUS LS500H 2018 User Guide

231-1. For safe use
LS500h_OM_OM50F42U_(U) 1
For safety and security
Adjust the angle of the seatback so
that you are sitting straight up and
so that you do not have to lean for-
ward to steer. ( → P.128)
Adjust the seat so that you can
depress the pedals fully and so that
your arms bend slightly at the
elbow when gripping the steering
wheel. ( → P.128)
Lock the head restraint in place
with the center of the head restraint
closest to the top of your ears.
( → P.144)
Wear the seat belt correctly.
( → P.24) Make sure that all occupants are wear-
ing their seat belts before driving the
vehicle. ( → P.24)
Use a child restraint system appropri-
ate for the child until the child becomes
large enough to properly wear the
vehicle’s seat belt. ( → P.45)
Make sure that you can see backward
clearly by adjusting the inside and out-
side rear view mirrors properly.
( → P.148, 149)For safe driving For safe driving, adjust the seat and
mirror to an appropriate position
before driving.
Correct driving posture
WARNING
■
For safe driving
Observe the following precautions.
Failure to do so may result in death or
serious injury. A
B
C
D ●
Do not adjust the position of the
driver’s seat while driving.
Doing so could cause the driver to lose
control of the vehicle. ●
Do not place a cushion between the
driver or passenger and the seatback.
A cushion may prevent correct pos-
ture from being achieved, and reduce
the effectiveness of the seat belt and
head restraint. ●
Do not place anything under the front
seats.
Objects placed under the front seats
may become jammed in the seat
tracks and stop the seat from locking in
place. This may lead to an accident
and the adjustment mechanism may
also be damaged. ●
Always observe the legal speed limit
when driving on public roads. ●
When driving over long distances, take
regular breaks before you start to feel
tired.
Also, if you feel tired or sleepy while
driving, do not force yourself to con-
tinue driving and take a break immedi-
ately.
Correct use of the seat belts
Adjusting the mirrors

26 1-1. For safe use
LS500h_OM_OM50F42U_(U) 1 To fasten the seat belt, push the
plate into the buckle until a click
sound is heard.
2 To release the seat belt, press the
release button .If the seat belt cannot be pulled out of the
retractor, firmly pull the belt and release it.
■
Emergency locking retractor (ELR)
The retractor will lock the belt during a sud-
den stop or on impact. It may also lock if you
lean forward too quickly. A slow, easy
motion will allow the belt to extend so that
you can move around fully.
■
Automatic locking retractor (ALR)
When a passenger’s sh oulder belt is com-
pletely extended and then retracted even
slightly, the belt is locked in that position and
cannot be extended. This feature is used to
hold the child restraint system (CRS) firmly.
To free the belt again, fully retract the belt
and then pull the belt out once more.
( → P.45) The front seat belt buckles move out-
ward automatically for easier access. 
When entering the vehicle
When a front door is opened, the seat
belt buckle for the corresponding seat
will move outward automatically. The
buckle will retract automatically after
the plate is inserted and locked to the
buckle. 
When exiting the vehicle (driver’s
seat only)
If the power switch is turned off when
the driver’s seat belt is fastened, the
driver’s seat belt buckle will move out-
ward. The buckle will retract automati-
cally when the driver’s seat belt is
released. *
: If equipped
■
Easy Access Buckle ●
If the seat belt buckle is not latched when
it is in the outward position, it will return to
its original position after a certain amount
of time. ●
If an occupant exits the vehicle and leaves
the front door open and then enters the
vehicle again, the seat belt buckle will not
operate until the door is closed and then
opened again.
■
Customization
Some functions can be customized.
( → P.481)NOTICE■
When using a seat belt extender
When releasing the se at belt, press on
the buckle release button on the
extender, not on the seat belt.
This helps prevent damage to the vehicle
interior and the extender itself.
Fastening and releasing the seat
belt
AEasy Access Buckle (front
seats) *

28 1-1. For safe use
LS500h_OM_OM50F42U_(U) When the vehicle speed reaches
approximately 12 mph (20 km/h) or
higher, the seat belts will retract slightly
to remove any slack.
If the system determines that a collision
is unavoidable, the front seat belts will
retract before the collision. ( → P.210)■
Pre-collision seat belts with comfort
function
A motor sound may be heard when a front
seat belt is released or a front door is
opened. This does not indicate a malfunc-
tion.
■
Customization
Some functions can be customized.
( → P.481) WARNING●
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.
Pre-collision seat belts with com-
fort function (front seats of vehi-
cles with Lexus Safety
System+A)

30 1-1. For safe use
LS500h_OM_OM50F42U_(U) • 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 F
A
B
C
D
E
F
G
H
I
J
K
L
M
N
O
P

311-1. For safe use
LS500h_OM_OM50F42U_(U) 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.●
The emergency flashers will be turned on
automatically. ( → P.420)●
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 assi stance 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.364)
• An SRS airbag is deployed.
• A seat belt pretensioner is activated.
• The vehicle is involved in a severe
rear-end collision. ■
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
front of the vehicle underrides, or goes
under, the bed of a truck ●
The SRS front airbags for the front pas-
senger will not activate if there is no pas-
senger sitting in the front passenger seat.
However, the SRS front airbags for the
front passenger may deploy if luggage is
put in the seat, even if the seat is unoccu-
pied.
●
The SRS seat cushion airbags on the rear
seat will not operate if the occupant is not
wearing a seat belt.
■
SRS airbag deployment conditions (SRS
side and curtain shield airbags)
●
The SRS side and curtain shield airbags
will deploy in the event of an impact that
exceeds the set threshold level (the level Q
R
S
T

34 1-1. For safe use
LS500h_OM_OM50F42U_(U) ●
The surface of the seat s with the side air-
bag is scratched, cracked, or otherwise
damaged.
●
The portion of the front pillars, rear pillars
or roof side rail garnishes (padding) con-
taining the curtain shield airbags inside is
scratched, cracked, or otherwise dam-
aged. WARNING■
SRS airbag precautions
Observe the following precautions
regarding the SRS airbags.
Failure to do so may cause death or seri-
ous injury. ●
The driver and all passengers in the
vehicle must wear their seat belts
properly.
The SRS airbags are supplemental
devices to be used with the seat belts. ●
The SRS driver airbag deploys with
considerable force, and can cause
death or serious injury especially if the
driver is very close to the airbag.
The National Highway Traffic Safety
Administration (NHTSA) advises: Since
the risk zone for the driver’s airbag is the
first 2 - 3 in. (50 - 75 mm) of inflation,
placing yourself 10 in. (250 mm) from
your driver airbag provides you with a
clear margin of safety. This distance is
measured from the center of the steering
wheel to your breastbone. If you sit less
than 10 in. (250 mm) away now, you can
change your driving position in several
ways:
• Move your seat to the rear as far as
you can while still reaching the pedals
comfortably.
• Slightly recline the back of the seat.
Although vehicle designs vary, many
drivers can achieve the 10 in. (250
mm) distance, even with the driver seat
all the way forward, simply by reclining
the back of the seat somewhat. If
reclining the back of your seat makes it
hard to see the road, raise yourself by
using a firm, non-slippery cushion, or
raise the seat if your vehicle has that
feature.

38 1-1. For safe use
LS500h_OM_OM50F42U_(U) 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. ■
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 level 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 lower 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 pr otruding 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.)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 being driven within
the operational speed range, the
system operates.
System components
A
B
C

40 1-1. For safe use
LS500h_OM_OM50F42U_(U) Driver’s and front passenger’s seat belt reminder light
SRS warning light 
For the U.S.A.
“AIR BAG OFF” indicator light
“AIR BAG ON” indicator light 
For Canada
“AIR BAG OFF” indicator light
“AIR BAG ON” indicator lightFront passenger occupant classification system Your vehicle is equipped with a front pa ssenger occupant clas sification system.
This system detects the conditions of th e front passenger seat and activates or
deactivates the front passenger airb ag and front passenger knee airbag.
System components
A
B
C
D
E
F
WARNING
■
Front passenger occupant classifica-
tion system precautions
Observe the following precautions
regarding the front passenger occupant
classification system.
Failure to do so may cause death or seri-
ous injury. ●
Wear the seat belt properly.
●
Make sure the front passenger’s seat
belt plate has not been left inserted
into the buckle before someone sits in
the front passenger seat.

411-1. For safe use
LS500h_OM_OM50F42U_(U) 1
For safety and security WARNING●
Make sure the “AIR BAG OFF” indica-
tor light is not illuminated when using
the seat belt extender for the front pas-
senger seat. If the “AIR BAG OFF”
indicator light is illuminated, discon-
nect the extender tongue from the seat
belt buckle, and reconnect the seat
belt. Reconnect the se at belt extender
after making sure the “AIR BAG ON”
indicator light is illu minated. If you use
the seat belt extender while the “AIR
BAG OFF” indicator light is illumi-
nated, the SRS airbags for the front
passenger will not activate, which
could cause death or serious injury in
the event of a collision.●
Do not apply a heavy load to the front
passenger seat or equipment (e.g.
seatback pocket).●
Do not put weight on the front passen-
ger seat by putting your hands or feet
on the front passenger seat seatback
from the rear passenger seat.●
Do not let a rear passenger lift the
front passenger seat with their feet or
press on the seatback with their legs.●
Do not put objects under the front pas-
senger seat.
●
Do not recline the front passenger
seatback so far that it touches a rear
seat. This may cause the “AIR BAG
OFF” indicator light to be illuminated,
which indicates that the SRS airbags
for the front passenger will not activate
in the event of a severe accident. If the
seatback touches the rear seat, return
the seatback to a position where it
does not touch the rear seat. Keep the
front passenger seatback as upright as
possible when the vehicle is moving.
Reclining the seatback excessively
may lessen the effectiveness of the
seat belt system. ●
If an adult sits in the front passenger
seat, the “AIR BAG ON” indicator light
is illuminated. If the “AIR BAG OFF”
indicator is illuminated, ask the passen-
ger to sit up straight, well back in the
seat, feet on the floor, and with the seat
belt worn correctly. If the “AIR BAG
OFF” indicator still remains illumi-
nated, either ask the passenger to
move to the rear seat, or if that is not
possible, move the front passenger
seat fully rearward. ●
When it is unavoidable to install a for-
ward-facing child re straint system on
the front passenger seat, install the
child restraint system on the front pas-
senger seat in the proper order.
( → P.46)●
Do not modify or remove the front
seats. ●
Do not kick the front passenger seat or
subject it to severe impact. Otherwise,
the SRS warning light may come on to
indicate a malfunction of the front pas-
senger occupant clas sification system.
In this case, contact your Lexus dealer
immediately. ●
Child restraint systems installed on the
rear seat should not contact the front
seatbacks.
●
Do not use a seat accessory, such as a
cushion and seat cover, that covers the
seat cushion surface.
●
Do not modify or replace the uphol-
stery of the front seat.

42 1-1. For safe use
LS500h_OM_OM50F42U_(U) ■
Adult *1
■
Child *4
■
Child restraint system with infant *5Condition and operation in the front passenger occupant classification
system Indicator/warning light “AIR BAG ON” and “AIR BAG OFF” indi-
cator lights “AIR BAG ON”
SRS warning light Off
Driver’s and front passenger’s seat belt
reminder light Off *2
or flashing *3
Devices Front passenger airbag
Activated
Front passenger knee airbag
Indicator/warning light “AIR BAG ON” and “AIR BAG OFF” indi-
cator lights “AIR BAG OFF” or
“AIR BAG ON” *4
SRS warning light Off
Driver’s and front passenger’s seat belt
reminder light Off *2
or flashing *3
Devices Front passenger airbag
Deactivated or acti-
vated *4
Front passenger knee airbag
Indicator/warning light “AIR BAG ON” and “AIR BAG OFF” indi-
cator lights “AIR BAG OFF” *6
SRS warning light Off
Driver’s and front passenger’s seat belt
reminder light Off *2
or flashing *3
Devices Front passenger airbag
Deactivated
Front passenger knee airbag