ECU lexus LC500 2018 User Guide

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1-1. For safe use
For safety and security
WARNING
●Improperly seated and/or restrained infants and children can be killed or seriously injured by a deploying airbag.
An infant or child who is too small to use a seat belt should be properly secured using a child restraint system.
Lexus strongly recommends that all infants and children be placed in the rear seats of the vehicle and properly
restrained. The rear seats are safer for infants and children than the front pas-senger seat. ( P.48)
●Do not sit on the edge of the seat or
lean against the dashboard.
●Do not allow a child to stand in front of
the SRS front passenger airbag unit or sit on the knees of a front passenger.
●Do not allow the front seat occupants to hold items on their knees.
●Do not lean against the door, the roof side rail or the front, side and rear pil-
lars.
●Do not allow anyone to kneel on the
passenger seat toward the door or put their head or hands outside the vehi-cle.
●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.

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1-1. For safe use
For safety and security
Sensors
Hood
Lifters
■Pop Up Hood precautions
●Before scrapping your vehicle, make sure
to contact any authorized Lexus retailer or Lexus authorized repairer, or any reli-able repairer.
●The Pop Up Hood system cannot be reused once it has operated. Have it replaced by any authorized Lexus retailer
or Lexus authorized repairer, or any reli- able repairer.
■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 greater than that of a
pedestrian while the vehicle being driven within the operational speed range of approximately 25 to 55 km/h (16 to 34
mph). (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 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 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
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

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1-1. For safe use
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 any authorized Lexus retailer or Lexus authorized repairer,
or any reliable repairer as soon as pos- sible.
■When parking
●If the vehicle is in a poorly ventilated area or a closed area, such as a garage, stop the engine <hybrid sys-
tem>.
●Do not leave the vehicle with the engine running <hybrid system operat-ing> 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 <hybrid system operating> in an area
with snow build-up, or where it is snowing. If snowbanks build up around the vehicle while the engine is running
<hybrid system is operating>, exhaust gases may collect and enter the vehi-cle.
■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 any authorized Lexus retailer or Lexus authorized repairer, or any reliable repairer.

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1-2. Child safety
For safety and security
WARNING
■When installing a child restraint sys- tem
For safety reasons, always install a child restraint system in a rear seat. In the event that the rear seat cannot be used,
the front seat can be used as long as the airbag manual on-off system is set to “OFF”.
If the airbag manual on-off system is left on, the strong impact of the airbag deployment (inflation) may cause serious
injury or even death.
■When a child restraint system is not installed on the front passenger seat
Ensure that the airbag manual on-off sys- tem is set to “ON”.If it is left off, the airbag may not deploy in
the event of an accident, which may result in serious injury or even death.
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.
( P.152)
 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.

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1-2. Child safety
For safety and security
Install the available child restraint sys-
tem in vehicle upon confirming the fol-
lowing items.
■Standards for child restraint sys-
tems
Use a child restraint system that con-
forms to ECE R44*1.
The following approval mark is dis-
played on child restraint systems which
are conformed.
Check for an approval mark attached
to the child restraint system.
Example of the displayed regulation
number
ECE R44 approval mark*2
The weight range of the child who is
applicable for an ECE R44 approval
mark is indicated.
*1: ECE R44 is a U.N. regulation for child
restraint systems.
*2: The displayed mark may differ depend-
ing on the product.
WARNING
●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 seriously injured or even killed in the event of sudden braking, sud- den swerving, or an accident.
●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.
●Depending on the child restraint sys-tem, installation may be difficult or
impossible. In those cases, check whether the child restraint system is suitable for installment in the vehicle.
( P.54, 57) Be sure to install and observe the usage rules after carefully reading the child restraint system fixing
method in this manual, as well as the operation manual enclosed with the child restraint system.
●Keep the child restraint 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

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1-2. Child safety
For safety and security
■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 and the head restraint can be
removed, remove the head restraint.
Otherwise, put the head restraint in
the upper most position.
ISOFIX rigid anchor
attachmentP.57
Anchor brackets (for top
strap) attachmentP.60
Installation methodPage
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.

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1-2. Child safety
For safety and security
WARNING
WARNING
■When installing a child restraint sys-
tem
●Only put a forward-facing child
restraint system on the front seat when unavoidable. When installing a for-
ward-facing child rest raint on the front passenger seat, move the seat as far back as possible. Failing to do so may
result in death or serious injury if the airbags deploy (inflate).
●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 airbags 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 junior seat is installed, always ensure that the shoulder belt is posi-
tioned 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.

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1-2. Child safety
For safety and security
Key of letters inserted in the above table:
X: Not suitable seat position for children in this mass group.
U: Suitable for “universal” category child restraint systems approved for use in this
mass group.
UF: Suitable for forward-facing “unive rsal” category child restraint systems
approved for use in this mass group.
*1: Adjust the seatback angle to the most upright position. Move the front seat fully rear-
ward. If the passenger seat height can be ad justed, move it to the upper most position.
*2: If the head restraint interferes with your child restraint system, 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 in
the rear seats, adjust the front seat
so that it does not interfere with the
child or child restraint system.
 When installing a child seat with
support base, if the child seat inter-
feres with the seatback when latch-
ing it into the support base, adjust
the seatback rearward until there is
no interference.
Mass groups
Seating position
Front passenger seat
Rear seatAirbag manual on-off switch
ONOFF
0
Up to 10 kg
(22 lb.)
XU*1X
0+
Up to 13 kg
(28 lb.)
XU*1X
I
9 to 18 kg
(20 to 39 lb.)
Rearward-facing 
X
U*1, 2XForward-facing 
UF*1, 2
II, III
15 to 36 kg
(34 to 79 lb.)
UF*1, 2U*1, 2X

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1-2. Child safety
When installing a forward-facing
child seat, if there is a gap between
the child seat and the seatback,
adjust the seatback angle until good
contact is achieved.
 If the seat belt shoulder anchor is
ahead of the child seat belt guide,
move the seat cushion forward.
 When installing a junior seat, if the
child in your child restraint system is
in a very upright position, adjust the
seatback angle to the most comfort-
able position. And if the seat belt
shoulder anchor is ahead of the
child seat belt guide, move the seat
cushion forward.
■Installing child restraint system
using a seat belt
Install the child restraint system in
accordance to the operation manual
enclosed with the child restraint sys-
tem.
1 If installing the child restraint sys-
tem to the front passenger seat is
unavoidable, refer to P.51 for front
passenger seat adjustment.
2 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.
( P.143)
3 Run the seat belt through the child
restraint system and insert the plate
into the buckle. Make sure that the
belt is not twisted. Securely fix the
seat belt to the child restraint sys-
tem in accordance to the directions
enclosed with the child restraint
system.
4 If your child restraint system is not
equipped with a lock-off (a seat belt

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1-2. Child safety
For safety and security
locking feature), secure the child
restraint system using a locking clip.
5 After installing the child restraint
system, rock it back and forth to
ensure that it is installed securely.
( P.57)
■Removing a child restraint system
installed with a seat belt
Press the buckle release button and
fully retract the seat belt.
When releasing the buckle, the child
restraint system may spring up due to the
rebound of the seat cushion. Release the
buckle while holding down the child
restraint system.
Since the seat belt automatically reels itself,
slowly return it to the stowing position.
■When installing a child restraint system
You may need a locking clip to install the child restraint system. Follow the instruc-tions provided by the manufacturer of the
system. If your child restraint system does not provide a locking clip, you can purchase the following item from any authorized
Lexus retailer or Lexus authorized repairer, or any reliable repairer: Locking clip for child restraint system (Part
No. 73119-22010)
■ISOFIX rigid anchors (ISOFIX
child restraint system)
Lower anchors are provided for the
each rear seat. (Buttons displaying the
location of the anchors are attached to
the seats.)
WARNING
■When installing a child restraint sys- tem
Observe the following precautions. Failure to do so may result in death or serious injury.
●Do not allow children to play with the
seat belt. If the seat belt becomes twisted around a child’s neck, it may lead to choking or other serious inju-
ries that could result in death. If this occurs and the buckle cannot be unfastened, scissors should be used to
cut the belt.
●Ensure that the belt and plate are securely locked and the seat belt is not twisted.
●Shake the child restraint system left
and right, and forward and backward to ensure that it has been securely installed.
●After securing a child restraint system,
never adjust the seat.
●When a junior seat is installed, always ensure that the shoulder belt is posi-tioned 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.
●Follow all installation instructions pro-
vided by the child restraint system manufacturer.
Child restraint system fixed with
an ISOFIX rigid anchor