2016 LEXUS RX350 ECU

431-1. For safe use
1
For safety and security
RX350_U_OM48E90U WA R N I N G ■
SRS airbag precautions ●
If breathing becomes difficult after the SRS airbags have deployed, open a door or
window to allow fresh air in, or leave the vehicl e if it is safe to do so. Wash off any resi-
due as soon as possible to prevent skin irritation. ●
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 cushion, on the front passenger’s seat. Doing so will
disperse the passenger’s weight, which prevents the sensor from detecting the pas-
senger’s weight properly. As a result, th e SRS front airbags for the front passenger
may not deploy in the event of a collision. ■
Modification and disposal of SRS airbag system components
Do not dispose of your vehicle or perform any of the following modifications without
consulting your Lexus dealer. The SRS airb ags may malfunction or deploy (inflate)
accidentally, causing de ath or serious injury.●
Installation, removal, disassembl y and repair of the SRS airbags●
Repairs, modifications, removal or replac ement of the steering wheel, instrument
panel, dashboard, seats or seat upholstery, front, side and rear pillars, roof side rails,
front door panels, front door trims, or front door speakers ●
Modifications to the front door pa nel (such as making a hole in it)●
Repairs or modifications of the front fend er, front bumper, or side of the occupant
compartment ●
Installation of a grille guar d (bull bars, kangaroo bar, etc.), snow plows, winches or
roof luggage carrier ●
Modifications to the vehicle’s suspension system ●
Installation of electronic devices such as mobile two-way radios and CD players●
Modifications to your vehicle for a person with a physical disability

451-1. For safe use
1
For safety and security
RX350_U_OM48E90U ■
Conditions under which the SRS airbags may deploy (inflate), ot her than a collision
The SRS front airbags and SRS side and curtain shield airbags may also deploy if a seri-
ous impact occurs to the underside of your vehicle. Some examples are shown in the
illustration.
The SRS curtain shield airbags may also deploy under the situations shown in the illustra-
tion.
■
Types of collisions that may not deploy the SRS airbags (SRS front airbags)
The SRS front airbags do not gene rally inflate if the vehicle is involved in a side or rear
collision, if it rolls over, or if it is involved in a low-speed frontal collision. But, whenever a
collision of any type causes sufficient forwar d deceleration of the vehicle, deployment of
the SRS front airbags may occur. ●
Hitting a curb, edge of pavement or hard sur-
face ●
Falling into or jumping over a deep hole ●
Landing hard or falling ●
The angle of vehicle tip-up is marginal. ●
The vehicle skids and hits a curb stone.
●
Collision from the side ●
Collision from the rear ●
Vehicle rollover

471-1. For safe use
1
For safety and security
RX350_U_OM48E90U ■
When to contact your Lexus dealer
In the following cases, the vehicle will re quire inspection and/or repair. Contact your
Lexus dealer as soon as possible. ●
Any of the SRS airbags have been inflated.●
The front of the vehicle is damaged or
deformed, or was involv ed in an accident that
was not severe enough to cause the SRS front
airbags to inflate. ●
A portion of a door or its surrounding area is
damaged, deformed or has had a hole made in
it, or the vehicle was in volved in an accident
that was not severe enough to cause the SRS
side and curtain shield airbags to inflate. ●
The pad section of the steering wheel, dash-
board near the front passenger airbag or
lower portion of the instrument panel is
scratched, cracked, or otherwise damaged. ●
The front passenger’s seat cushion surface is
scratched, cracked, or otherwise damaged.
●
The surface of the seats with the side airbag is
scratched, cracked, or otherwise damaged.

491-1. For safe use
1
For safety and security
RX350_U_OM48E90U SRS warning light
Seat belt reminder light
“AIR BAG OFF” indicator light
“AIR BAG ON” indicator lightFront 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 devices for the front passenger.
1
2
3
4

511-1. For safe use
1
For safety and security
RX350_U_OM48E90U ■
Child restraint system with infant
* 5
■
Unoccupied Indicator/
warning light “A I R B A G O N ” a n d “A I R B A G O F F ”
indicator lights “A I R B A G
OFF”
* 6
SRS warning light Off
Seat belt reminder light Off
* 2
or
flashing
* 3
Devices Front passenger airbag Deactivated
Side airbag on the front passenger seat
Activated
Curtain shield airbag in the front passenger side
Seat cushion airbag in the front passenger side Deactivated
Front passenger’s seat belt pretensioner and force
limiter Activated
Indicator/
warning light “A I R B A G O N ” a n d “A I R B A G O F F ”
indicator lights “A I R B A G
OFF”
SRS warning light
Off
Seat belt reminder light
Devices Front passenger airbag Deactivated
Side airbag on the front passenger seat
Activated
Curtain shield airbag in the front passenger side
Seat cushion airbag in the front passenger side Deactivated
Front passenger’s seat belt pretensioner and force
limiter Activated

531-1. For safe use
1
For safety and security
RX350_U_OM48E90U WA R N I N G ■
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 th e 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 pa ssenger seat or equipment (e.g. seatback
pocket). ●
Do not put weight on the front passenger se at 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.

551-1. For safe use
1
For safety and security
RX350_U_OM48E90UExhaust gas precautions Harmful substance to the human body is contained in exhaust gases if inhaled.WA R N I N G
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 wh ile the engine is ru nning, 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.

571-2. Child safety
1
For safety and security
RX350_U_OM48E90U Points to remember ............................................................................................................. .. P. 57
Child restraint system ......................................................................................................... .. P. 59
When using a child restraint system ...............................................................................P. 60
Child restraint system installation method
• Fixed with a seat belt..................................................................................................P. 63
• Fixed with a child restraint LATCH anchor ...................................................... P. 69
• Using an anchor bracket (for top tether stra p).................................................P. 71
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 suits 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, 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