2018 LEXUS LS500H sensor

7
LS500h_OM_OM50F42U_(U) hybrid vehicles emit approximately the
same amount of electromagnetic
waves as the conventional gasoline
powered vehicles or home electronic
appliances despite of their electro-
magnetic shielding.
Unwanted noise may occur in the
reception of the mobile two-way radio.
Your Lexus is equipped with several
sophisticated computers that will
record certain data, such as:
 Engine speed
 Electric motor speed (traction
motor speed)
 Accelerator status
 Brake status
 Vehicle speed
 Shift position
 Hybrid battery (traction battery)
status
 Images from the camera sensor
(available only in situations when
sudden inputs o ccur while driving
[sudden acceleration, etc.], the
pre-collision braking function or the
pre-collision brake assist function
was operating, the Parking Support
Brake function [static objects] was
operating, or your vehicle was
involved in a collision)
The recorded data varies according to
the vehicle grade level and options
with which it is equipped. These com-
puters do not record conversations or sounds, and only record images out-
side of the vehicle in certain situations.
 Data usage Lexus may use the data recorded in these
computers to diagnose malfunctions, con-
duct research and development, and
improve quality.
Lexus will not disclose the recorded data to
a third party except:
• With the consent of the vehicle owner or
with the consent of the lessee if the vehi-
cle is leased
• In response to an official request by the
police, a court of law or a government
agency
• For use by Lexus in a lawsuit
• For research purposes where the data is
not tied to a specific vehicle or vehicle
owner
 Usage of data collected through
Safety Connect / Lexus Enform
(U.S. mainland only) If your Lexus has Safety Connect or Lexus
Enform and if you have subscribed to those
services, please refe r to the Safety Con-
nect / Lexus Enform Telematics Subscrip-
tion Service Agreement for information on
data collected and its usage.
This vehicle is equipped with an event
data recorder (EDR). The main pur-
pose of an EDR is to record, in certain
crash or near crash-like situations, such
as an air bag deployment or hitting a
road obstacle, data that will assist in
understanding how a vehicle’s systems
performed. The EDR is designed to
record data related to vehicle dynam-Vehicle data recordings
Event data recorder

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

371-1. For safe use
LS500h_OM_OM50F42U_(U) 1
For safety and security WARNING●
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 th e SRS airbags●
Repairs, modifications, removal or
replacement of the steering wheel,
instrument panel, da shboard, 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)
●
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

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

391-1. For safe use
LS500h_OM_OM50F42U_(U) 1
For safety and security 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.
●
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 fr om 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.

64 1-3. Hybrid system
LS500h_OM_OM50F42U_(U) There are air intake vents on each side
of the rear seatback with the purpose
of cooling the hybrid battery (traction
battery). If the vents become blocked,
hybrid battery output may be reduced. When a certain level of impact is
detected by the impact sensor, the
emergency shut off system blocks the
high voltage current and stops the fuel
pump to minimize the risk of electrocu-
tion and fuel leakage. If the emergency
shut off system activates, your vehicle
will not restart. To restart the hybrid
system, contact your Lexus dealer.
A message is automatically displayed
when a malfunction occurs in the
hybrid system or an improper opera-
tion is attempted.
If a warning message is shown on the
multi-information display, read the
message and follow the instructions.
■
If a warning light comes on, a warning
message is displayed, or the 12-volt bat-
tery is disconnected
The hybrid system may not start. In this
case, try to start the system again. If the
“READY” indicator does not come on, con-Hybrid battery (traction bat-
tery) air intake vents
NOTICE■
Hybrid battery (traction battery) air
intake vents●
Make sure not to block the air intake
vent with anything, such as a seat
cover, plastic cover, or luggage. If the
vents become blocked, the hybrid bat-
tery (traction battery) input and output
may be restricted, leading to a reduc-
tion in hybrid battery (traction battery)
output and a malfunction.
●
When dust etc. has accumulated in the
air intake vent, periodically clean it
with a vacuum cleaner to prevent the
vent from clogging.
●
A filter is installed to the air intake vent.
When the filter remains noticeably
dirty even after cleaning the air intake
vent, filter cleaning or replacement is
recommended. When cleaning or
replacing the filter, contact your Lexus
dealer.
Refer to P.374 for details on how to
clean the filters. ●
Do not get water or foreign materials
in the air intake vent s as this may cause
a short circuit and damage the hybrid
battery (traction battery).
Emergency shut off system
Hybrid warning message