2018 LEXUS LS500 light

38 1-1. For safe use
LS500_OM_OM50F54U_(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
LS500_OM_OM50F54U_(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
LS500_OM_OM50F54U_(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
LS500_OM_OM50F54U_(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

431-1. For safe use
LS500_OM_OM50F54U_(U) 1
For safety and security ■
Unoccupied
■
There is a malfunction in the system *1
: The system judges a person of adult size as an adult. When a smaller adult sits in the
front passenger seat, the system may not re cognize him/her as an adult depending on
his/her physique and posture. *2
: In the event the front passenger is wearing a seat belt *3
: In the event the front passenger does not wear a seat belt *4
: For some children, child in se at, child in booster seat or ch ild in convertible seat, the sys-
tem may not recognize him/her as a child. Factors which may affect this can be the phy-
sique or posture. *5
: Never install a rear-facing child restraint system on th e front passenger seat. A for-
ward-facing child restraint system should only be installed on the front passenger seat
when it is unavoidable. ( → P.45)*6
: In case the indicator light is not illuminated, consult this manual on how to install the child
restraint system properly. ( → P.46)Indicator/warning light “AIR BAG ON” and “AIR BAG OFF” indi-
cator lights “AIR BAG OFF”
SRS warning light
Off
Driver’s and front passenger’s seat belt
reminder light
Devices Front passenger airbag
Deactivated
Front passenger knee airbag
Indicator/warning light “AIR BAG ON” and “AIR BAG OFF” indi-
cator lights “AIR BAG OFF”
SRS warning light On
Driver’s and front passenger’s seat belt
reminder light Off
Devices Front passenger airbag
Deactivated
Front passenger knee airbag

44 1-1. For safe use
LS500_OM_OM50F54U_(U) Exhaust gas precautions Harmful substance to the human
body is included in exhaust gases if
inhaled. WARNING
Exhaust gases include harmful carbon
monoxide (CO), which is colorless and
odorless. Observe the following precau-
tions.
Failure to do so may cause exhaust gases
enter the vehicle and may lead to an
accident caused by light-headedness, or
may lead to death or a serious health
hazard. ■
Important points while driving●
Keep the trunk lid closed.●
If you smell exhaust gases in the vehi-
cle even when the trunk lid is closed,
open the windows and have the vehi-
cle inspected at your Lexus dealer as
soon as possible.■
When parking●
If the vehicle is in a poorly ventilated
area or a closed area, such as a
garage, stop the engine.
●
Do not leave the vehicle with the
engine on for a long time.
If such a situation cannot be avoided,
park the vehicle in an open space and
ensure that exhaust fumes do not enter
the vehicle interior.
●
Do not leave the engine running in an
area with snow build-up, or where it is
snowing. If snowbanks build up around
the vehicle while the engine is running,
exhaust gases may collect and enter
the vehicle. ■
Exhaust pipe
The exhaust system needs to be checked
periodically. If there is a hole or crack
caused by corrosion, damage to a joint
or abnormal exhaust noise, be sure to
have the vehicle inspected and repaired
by your Lexus dealer.

48 1-2. Child safety
LS500_OM_OM50F54U_(U) lowest position (if equipped).
 Adjust the pelvic support to the low-
est position.
 Adjust the seatback side bolster to
the widest position (if equipped).
 Adjust the seat cushion side bolster
to the lowest position (if equipped).
 Adjust the hip support to the lowest
position (if equipped).
 If the head restraint interferes with
the child restraint system installa-
tion and the head restraint can be
removed, remove the head restraint.
Otherwise, put the head restraint in
the upper most position.
■
When installing a child restraint
system to a power rear seat (if
equipped)
When using a child restraint system in
an outer rear seat, adjust the seat as
follows and install the child restraint
system.
 Adjust the seat cushion to the fully
rearward position.
 Adjust the upper seatback to the
rearmost position.
 Adjust the front of the seat cushion
to the lowest position.  Adjust the head restraint to the low-
est and rearmost position.
 Adjust the shoulder bolster to the
lowest position.
 Adjust the lumbar support to the
lowest position.
 Adjust the pelvic support to the low-
est position.
 Disable the automatic rear seat
operation. ( → P.308)
 For the rear seat with an ottoman (if
equipped): Adjust the seatback to
the most upright position and otto-
man (footrest) to the stowed posi-
tion.
WARNING
■
When using a child restraint system
Observe the following precautions.
Failure to do so may result in death or
serious injury.
●
Never install a rear-facing child
restraint system on the front passenger
seat even if the “AIR BAG OFF” indi-
cator light is illuminated. In the event of
an accident, the force of the rapid infla-
tion of the front passenger airbag can
cause death or serious injury to the
child if the rear-fac ing child restraint
system is installed on the front passen-
ger seat.

491-2. Child safety
LS500_OM_OM50F54U_(U) 1
For safety and security
A child restraint system for a small
child or baby must itself be properly
restrained on the seat with the lap por-
tion of the lap/shoulder belt. ■
Installing child restraint system
using a seat belt (child restraint
lock function belt)
Install the child restraint system in
accordance to the operation manual
enclosed with the child restraint sys-
tem.WARNING●
A forward-facing child restraint system
may be installed on the front passen-
ger seat only when it is unavoidable. A
child restraint system that requires a
top tether strap should not be used in
the front passenger seat since there is
no top tether strap anchor for the front
passenger seat.●
A forward-facing child restraint system
may be installed on the front passen-
ger seat only when it is unavoidable.
When installing a forward-facing child
restraint system on the front passenger
seat, adjust the seatback angle to the
most upright position, move the seat to
the rearmost position, and raise the
seat to the upper most position, even if
the “AIR BAG OFF” indicator light is
illuminated.
●
Do not allow the child to lean his/her
head or any part of his/her body
against the door or the area of the seat,
front or rear pillars, or roof side rails
from which the SRS side airbags or
SRS curtain shield ai rbags deploy even
if the child is seated in the child
restraint system. It is dangerous if the
SRS side and curtain shield airbags
inflate, and the impact could cause
death or serious injury to the child. ●
When a booster seat is installed,
always ensure that th e shoulder belt is
positioned across the center of the
child’s shoulder. The belt should be
kept away from the child’s neck, but
not so that it could fall off the child’s
shoulder. ●
Use child restraint system suitable to
the age and size of the child and install
it to the rear seat. ●
If the driver’s seat interferes with the
child restraint system and prevents it
from being attached correctly, attach
the child restraint system to the
right-hand rear seat.
●
Adjust the front passe nger seat so that
it does not interfere with the child
restraint system.
Child restraint system fixed with
a seat belt