lexus LC500C 2021 / LEXUS 2021 LC500 CONVERTIBLE (OM11498U) Service Manual

391-1. For safe use
1
For safety and security
Before operating
After operating
■Active roll bar precautions
●Before scrapping your vehicle, make
sure to contact your Lexus dealer.
●If the active roll bar operates when the
soft top roof is opened, the soft top roof
cannot be closed.
●The active roll bar cannot be reused once
it has operated. Have it replaced by your
Lexus dealer.
■Active roll bar operational conditions
●The active roll bar operate regardless of
the opening/closing state of the soft top
roof.
●The active roll bar will operates in the
event of an impact that exceeds the set
threshold level (the level of force corre-
sponding to an approximately 12 - 18
mph [20 - 30 km/h] frontal collision with
a fixed wall that does not move or
deform, or the impact force produced by
an approximately 3300 lb. [1500 kg]
vehicle colliding with the vehicle cabin
from a direction perpendicular to the
vehicle orientation at an approximate speed of 12 - 18 mph [20 - 30 km/h]).
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 active roll bar operates when the
vehicle rolls over.
●The active roll bar may also operate if a
serious impact occurs to the underside of
the vehicle, such as in the following situa-
tion.
•Hitting a curb, edge of pavement or hard
surface
• Falling into or jumping over a deep hole
• Landing hard or falling
• The vehicle is leaning considerably to one side.
• The vehicle is subjected to certain types
of severe impacts when the vehicle has
slided sideways and collided with a curb,
etc.
■Conditions under whic h the active roll
bar may not operate
The active roll bar does not generally oper-
ate if the vehicle is involved in a rear colli-
sion, or if it is involved in a low-speed frontal
or side collision. But, whenever a collision of
any type causes sufficient forward deceler-
ation of the vehicle, op eration of the active
roll bar may occur.
●Collision from the rear
●Collision from the side to the vehicle
body other than the passenger compart-
ment
●Collision from the side at an angle
■When the active roll bar operates
The soft top roof cannot be opened or
closed while the active roll bar is operating.
■Warning message
If “Active Roll Bar System Malfunction Visit
Your Dealer” is displayed on the multi-
information display, have the vehicle
A
B

401-1. For safe use
inspected by your Lexus dealer immedi-
ately.
WARNING
■Active roll bar precautions
Observe the following precautions
regarding the active roll bar.
Failure to do so may cause death or seri-
ous injury.
●Make sure that all passengers do not
have any part of their body in the oper-
ating range of the active roll bar. Also,
do not sit on the package tray.
●Do not put anything on the package
tray. An object on the package tray
may fly when the active roll bar oper-
ates.
●Do not strike or apply significant levels
of force to the area of the active roll
bar components.
●If breathing becomes difficult after the
active roll bar has operated, 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 possible
to prevent skin irritation.
■When the active roll bar has oper-
ated
●If the active roll bar has operated, have
them replaced by your Lexus dealer. If
the active roll bar have operated, stop
the vehicle in a safe place and contact
your Lexus dealer.
●Do not touch the active roll bar imme-
diately after it has operated, as the bars
may be hot and burn you.
NOTICE
■Active roll bar precautions
Observe the following precautions to
ensure the active roll bar can operate
correctly.
●If something has hit the area around
the front bumper or front doors, the
sensors may be damaged even if the
active roll bar has not operated. Have
the vehicle inspected by your Lexus
dealer.
●Do not remove or repair the parts or
wiring of the active ro ll bar, 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 place anything on the package
tray.

411-1. For safe use
1
For safety and security
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 light
Front passenger occupant classification system
Your vehicle is equipped with a front passenger occupant classification sys-
tem. This system detects the conditions of the front passenger seat and acti-
vates or deactivates the front passeng er airbag and front passenger knee
airbag.
System components
A
B
C
D
E
F

421-1. For safe use
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 fron t passenger’s seat
belt plate has not been left inserted
into the buckle before someone sits in
the front passenger seat.
●Make sure the “AIR BAG OFF” indi-
cator light is not illuminated when
using the seat belt extender for the
front passenger seat. If the “AIR BAG
OFF” indicator light is illuminated, dis-
connect the extender tongue from the
seat belt buckle, and reconnect the
seat belt. Reconnect the seat belt
extender after making sure the “AIR
BAG ON” indicator light is illumi-
nated. If you use the seat belt extender
while the “AIR BAG OFF” indicator
light is illuminated, 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 or armrest).
●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
passenger to sit up straight, well back
in the seat, feet on the floor, and with
the seat belt worn co rrectly. If the “AIR
BAG OFF” indicator still remains illu-
minated, 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 restraint system on
the front passenger seat, install the
child restraint system on the front pas-
senger seat in the proper order.
(  P.48)
●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.

431-1. For safe use
1
For safety and security■Adult*1
■Child*4
■Child restraint system with infant*5
WARNING
●Do not modify or replace the uphol-
stery of the front seat.
Condition and operation in the front passenger occupant classification
system
Indicator/warning light
“AIR BAG ON” and “AIR BAG OFF” indicator lights“AIR BAG ON”
SRS warning lightOff
Driver’s and front passenger’s seat belt reminder lightOff*2 or flashing*3
DevicesFront passenger airbagActivatedFront passenger knee airbag
Indicator/warning light
“AIR BAG ON” and “AIR BAG OFF” indicator lights“AIR BAG OFF” or
“AIR BAG ON”
*4
SRS warning lightOff
Driver’s and front passenger’s seat belt reminder lightOff*2 or flashing*3
DevicesFront passenger airbagDeactivated or acti-
vated
*4Front passenger knee airbag
Indicator/warning light
“AIR BAG ON” and “AIR BAG OFF” indicator lights“AIR BAG OFF”*6
SRS warning lightOff
Driver’s and front passenger’s seat belt reminder lightOff*2 or flashing*3
DevicesFront passenger airbagDeactivatedFront passenger knee airbag

441-1. For safe use
■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 child 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 ch ild restraint system on the front passenger seat. A forward-
facing child restraint system sh ould only be installed on the front passenger seat when it
is unavoidable. ( P.48)
*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” indicator lights“AIR BAG OFF”
SRS warning light
OffDriver’s and front passenger’s seat belt reminder light
DevicesFront passenger airbagDeactivatedFront passenger knee airbag
Indicator/warning light
“AIR BAG ON” and “AIR BAG OFF” indicator lights“AIR BAG OFF”
SRS warning light
OnDriver’s and front passenger’s seat belt reminder light
DevicesFront passenger airbagDeactivatedFront passenger knee airbag

451-1. For safe use
1
For safety and security
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 running 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.

461-2. Child safety
1-2.Child safety
Points to remember: P.46
Child restraint system: P.47
When using a child restraint system:
 P.48
Child restraint system installation
method
• Fixed with a seat belt: P.50
• Fixed with a child restraint LATCH anchor: P.53
The laws of all 50 states of the U.S.A.
as well as Canada now require the use
of child restraint systems.
 Prioritize and observe the warnings,
as well as the laws and regulations
for child restraint systems.
 Use a child restraint system until the
Riding with children
Observe the following precautions
when children are in the vehicle.
Use a child restraint system appro-
priate for the child , until the child
becomes large enough to properly
wear the vehicle’s seat belt.
 It is recommended that children
sit in the rear seats to avoid acci-
dental contact with the shift lever,
wiper switch, etc.
 Use the window lock switch to
avoid children operating the
power window accidentally.
 Do not let small children operate
equipment which may catch or
pinch body parts, such as the
power window, hood, trunk, seats
etc.
WARNING
■When children are in the vehicle
Never leave children unattended in the
vehicle, and never allow children to have
or use the key.
Children may be able to start the vehicle
or shift the vehicle into neutral. There is
also a danger that children may injure
themselves by playing with the windows
or other features of the vehicle. In addi-
tion, heat build-up or extremely cold
temperatures inside the vehicle can be
fatal to children.
Child restraint systems
Before installing a child restraint
system in the vehicle, there are pre-
cautions that need to be observed,
different types of child restraint sys-
tems, as well as installation meth-
ods, etc., written in this manual.
Use a child restraint system when
riding with a small child that cannot
properly use a seat belt. For the
child’s safety, install the child
restraint system to a rear seat. Be
sure to follow the installation method
that is in the operation manual
enclosed with the restraint system.
Table of contents
Points to remember

471-2. Child safety
1
For safety and security
child becomes large enough to
properly wear the vehicle’s seat
belt.
 Choose a child restraint system that
suits your vehicle and is appropriate
to the age and size of the child.
■Types of child restraint system
installation methods
Confirm with the operation manual
enclosed with the child restraint system
about the installation of the child
restraint system.
WARNING
■When a child is riding
Observe the following precautions.
Failure to do so may result in death or
serious injury.
●For effective protection in automobile
accidents and sudden stops, a child
must be properly restrained, using a
seat belt or child restraint system
which is correctly installed. For instal-
lation details, refer to the operation
manual enclosed with the child
restraint system. General installation
instruction is provided in this manual.
●Lexus strongly urges the use of a
proper child restraint system that con-
forms to the weight and size of the
child, installed on the rear seat.
According to accident statistics, the
child is safer when properly restrained
in the rear seat than in the front seat.
●Holding a child in your or someone
else’s arms is not a substitute for a child
restraint system. In an accident, the
child can be crushed against the wind-
shield or between the holder and the
interior of the vehicle.
■Handling the child restraint system
If the child restraint system is not prop-
erly fixed in place, the child or other pas-
sengers may be seriou sly injured or even
killed in the event of sudden braking,
sudden swerving, or an accident.
●This vehicle is not equipped with top
tether anchorages. A child restraint
system that needs to be fixed with a
top strap cannot be pr operly installed.
Use an appropriate child restraint sys-
tem.
●If the vehicle were to receive a strong
impact from an accident, etc., it is pos-
sible that the child restraint system has
damage that is not readily visible. In
such cases, do not reuse the restraint
system.
●Make sure you have complied with all
installation instructions provided with
the child restraint system manufac-
turer and that the system is properly
secured.
●Keep the child rest raint system prop-
erly secured on the seat even if it is not
in use. Do not store the child restraint
system unsecured in the passenger
compartment.
●If it is necessary to detach the child
restraint system, remove it from the
vehicle.
Child restraint system

481-2. Child safety
■When installing a child restraint
system to a front passenger seat
For the safety of a child, install child
restraint systems to a rear seats. When
installing child restraint system to a
front passenger seat is unavoidable,
adjust the seat as follows and install the
child restraint system.
 Raise the seatback as much as pos-
sible
 Move the seat to the rearmost posi-
tion
 Raise the seat to the highest position
 If the head restraint interferes with
the child restraint system installa-
tion, put the head restraint in the upper most position.
Installation methodPage
Seat belt attachmentP.50
Child restraint LATCH
anchors attachmentP.53
When using a child restraint sys-
tem
WARNING
■When installing a child restraint sys-
tem
Observe the following precautions.
Failure to do so may result in death or
serious injury.