2020 LEXUS RX450H ECU

491-1. For safe use
1
For safety and security
RX350/RX350L_U
■Child restraint system with infant*5
■Unoccupied
Indicator/
warning light
“AIR BAG ON” and “AIR BAG OFF” indicator lights“AIR BAG
OFF”
*6
SRS warning lightOff
Seat belt reminder lightOff*2 or
flashing
*3
Devices
Front passenger airbagDeactivated
Side airbag on the front passenger seatActivatedCurtain shield airbag in the front passenger side
Seat cushion airbag in the front passenger sideDeactivated
Front passenger’s seat belt pretensioner and force
limiterActivated
Indicator/
warning light
“AIR BAG ON” and “AIR BAG OFF” indicator lights“AIR BAG OFF”
SRS warning lightOffSeat belt reminder light
Devices
Front passenger airbagDeactivated
Side airbag on the front passenger seatActivatedCurtain shield airbag in the front passenger side
Seat cushion airbag in the front passenger sideDeactivated
Front passenger’s seat belt pretensioner and force
limiterActivated

511-1. For safe use
1
For safety and security
RX350/RX350L_U
WARNING
■Front passenger occupant classification system precautions
Observe the following precautions regarding the front passenger occupant classifica-
tion system.
Failure to do so may cause death or serious 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.
●Make sure the “AIR BAG OFF” indicator li ght is not illuminated when using the seat
belt extender for the front passenger seat. If the “AIR BAG OFF” indicator light is illu-
minated, disconnect 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 illuminated. 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 seri ous 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 passenger 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 passenger seat.

531-1. For safe use
1
For safety and security
RX350/RX350L_U
Exhaust gas precautions
Harmful substance to the human body is contained in exhaust gases if inhaled.
WARNING
Exhaust gases contain harmful carbon monoxi de (CO), which is colorless and odorless.
Observe the following precautions.
Failure to do so may cause exhaust gases enter the vehicle and may lead to an accident
caused by light-deadness, or may lead to death or a serious health hazard.
■Important points while driving
●Keep the back door closed.
●If you smell exhaust gases in the vehicle even when the back door is closed, open the
windows and have the vehicle 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.

551-2. Child safety
1
For safety and security
RX350/RX350L_U
Points to remember ..............................................................................................................P. 55
Child restraint system ......................................................................................................... .P. 57
When using a child restraint system .................... .......................................................... P. 59
Child restraint system installation method • Fixed with a seat belt...................................................................................................P. 61
• Fixed with a child restraint LATCH anchor .. ...................................................P. 67
• Using an anchor bracket (for top tether strap) ............................................. P. 70
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 child becomes large enough to properly
wear the vehicle’s seat belt.
●Choose a child restraint system that su its your vehicle and is appropriate to
the age and size of the child.
Child restraint systems
Before installing a child restraint system in the vehicle, there are precautions
that need to be observed, different type s of child restraint systems, as well as
installation methods, 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, in stall 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

561-2. Child safety
RX350/RX350L_U
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 installation details, refer to the operation manual enclosed with the child
restraint system. General in stallation instruction is provided in this manual.
●Lexus strongly urges the use of a proper ch ild restraint system that conforms to the
weight and size of the child, installed on the rear seat. According to accident statistics,
the child is safer when proper ly restrained in the rear seat than in the front seat.
●Holding a child in your or someone else’s ar ms is not a substitute for a child restraint
system. In an accident, the child can be crushed against the windshield or between
the holder and the interior of the vehicle.
■Handling the child restraint system
If the child restraint system is not properly fixed in place, the child or other passengers
may be seriously injured or even killed in th e event of sudden braking, sudden swerv-
ing, or an accident.
●If the vehicle were to receive a strong impact from an accident, etc., it is possible that
the child restraint system has da mage that is not readily visible. In such cases, do not
reuse the restraint system.
●Make sure you have complied with all installa tion instructions provided with the child
restraint system manufacturer and th at the system is properly secured.
●Keep the child restraint system properly secure d on the seat even if it is not in use. Do
not store the child restraint system un secured in the passenger compartment.
●If it is necessary to detach the child rest raint system, remove it from the vehicle or
store it securely in the luggage compartment.

571-2. Child safety
1
For safety and security
RX350/RX350L_U
■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.
Child restraint system
Installation methodPage
Seat belt
attachment P. 61
Child restraint
LATCH
anchors
attachment P. 67

591-2. Child safety
1
For safety and security
RX350/RX350L_U
■When installing a child restraint system to a front passenger seat
For the safety of a child, install child restraint systems to second-row 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
possible
●Move the seat to the rearmost
position
●Raise the seat to the highest posi-
tion
●If the head restraint interferes
with the installation of the child
restraint system, and the head
restraint can be removed, remove
the head restraint
If the head restraint cannot be removed, raise it to the uppermost position.
When using a child restraint system
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 ch ild restraint system on the front passenger seat even if
the “AIR BAG OFF” indicator lig ht is illuminated. In the event of an accident, the force
of the rapid inflation of the front passenger airbag can cause death or serious injury to
the child if the rear-facing ch ild restraint system is installed on the front passenger
seat.
●A forward-facing child restraint system ma y be installed on the front passenger 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.

611-2. Child safety
1
For safety and security
RX350/RX350L_U
A child restraint system for a small child or baby must itself be properly
restrained on the seat with the lap portion of the lap/shoulder belt.
◆Installing child restraint system using a seat belt (child restraint lock func-
tion belt)
Install the child restraint system in accordance to the operation manual
enclosed with the child restraint system.
■Rear-facing — Infant seat/convertible seat
Adjust the rear seat
If there is a gap between the child se at and the seatback, adjust the seat-
back angle until good contact is achieved.
Place the child restraint system
on the rear seat facing the rear of
the vehicle.
Run the seat belt through the
child restraint system and insert
the plate into the buckle. Make
sure that the belt is not twisted.
Fully extend the shoulder belt and
allow it to retract to put it in lock
mode. In lock mode, the belt can-
not be extended.
Child restraint system fixed with a seat belt
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3
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