airbag LEXUS RX450h 2015 User Guide

1341-8. Safety information
SRS airbag system components
Knee airbags
Front passenger airbag
Curtain shield airbags
Front side airbags
Front passenger occupant
classification system
(ECU and sensors)
“AIR BAG ON” and “AIR BAG
OFF” indicator lights
Rear side airbags
SRS warning light
Driver airbag Curtain shield and rear side
airbag sensors
Driver's seat belt buckle
switch
Driver's seat position sensor
Airbag sensor assembly
Front airbag sensors
Front passenger’s seat belt
buckle switch
Door sensors
Seat belt pretensioners and
force limiters

1351-8. Safety information
1
Before driving Your vehicle is equipped with AD VANCED AIRBAGS designed based
on the US motor vehicle safety st andards (FMVSS208). The airbag sen-
sor assembly (ECU) controls airbag deployment based on information
obtained from the sensors etc. show n in the system components diagram
above. This information includes cras h severity and occupant informa-
tion. As the airbags deploy, a chemica l reaction in the inflators quickly fills
the airbags with non-toxic gas to he lp restrain the motion of the occu-
pants. ■
If the SRS airbags deploy (inflate) ●
Bruising and slight abrasions may result from contact with a deploying (inflating)
SRS airbag.●
A loud noise and white powder will be emitted.●
Parts of the airbag module (steering wheel hub, airbag cover and inflator) as
well as the seats, parts of the front and rear pillars, and roof side rails, may be hot
for several minutes. The airbag itself may also be hot.●
The windshield may crack.●
For Safety Connect subscriber s, if the SRS airbags deploy or in the event of a
severe rear-end collision, the system is designed to send an emergency call to
the response center, notifying them of the vehicle’s location (without needing to
push the “SOS” button) and an agent will attempt to speak with the occupants
to ascertain the level of emergency and assistance required. If the occupants
are unable to communicate, the agent automatically treats the call as an emer-
gency and helps to dispatch the necessary emergency services. (  P. 6 2 6 )■
SRS airbag deployment conditions (SRS front airbags) ●
The SRS front airbags will deploy in the event of an impact that exceeds the
set threshold level (the level of force corresponding to an approximately 12 -
18 mph [20 - 30 km/h] frontal collision with a fixed wall that does not move or
deform).
However, this threshold 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

1361-8. Safety information
●
Depending on the type of collision, it is possible that only the seat belt preten-
sioners will activate.●
The SRS front airbags for the front passenger will not activate if there is no pas-
senger sitting in the front passenger seat . However, the SRS front airbags for the
front passenger may deploy if luggage is pu t in the seat, even if the seat is unoc-
cupied. (  P. 145)■
SRS airbag deployment conditions (SRS side airbags and curtain shield airbags)
The SRS side airbags and SRS curtain shield airbags will deploy in the event of an
impact that exceeds the set threshold level (the level of force corresponding to the
impact force produced by an approximately 3300 lb. [1500 kg] vehicle colliding
with the vehicle cabin from a direction perp endicular to the vehicle orientation at an
approximate speed of 12 - 18 mph [20 - 30 km/h]).
The SRS curtain shield airbags will deploy in the event of vehicle rollover.■
Conditions under which the SRS airbags may deploy (inflate), other than a colli-
sion (SRS front airbags)
The SRS front airbags may also deploy if a serious 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
illustration. ●
Hitting a curb, edge of pavement or hard
surface ●
Falling into or jumping over a deep hole ●
Landing hard or vehicle falling
●
The angle of vehicle tip-up is marginal.
●
The vehicle skids and hits a curb stone.

1371-8. Safety information
1
Before driving ■
Types of collisions that may not deploy the SRS airbags (SRS front airbags)
The SRS front airbags are generally not designed to 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 colli-
sion. But, whenever a collision of any type causes sufficient forward deceleration of
the vehicle, deployment of th e SRS front airbags may occur.
■
Types of collisions that may not deploy the SRS airbags
(SRS side airbags and curtain shield airbags)
The SRS side airbag and curtain shield airbag system may not activate if the vehicle
is subjected to a collision from the side at certain angles, or a collision to the side of
the vehicle body other than the passenger compartment.
The SRS side airbags are not generally designed to inflate if the vehicle is involved in
a frontal or rear collision, if it rolls over, or if it is involved in a low-speed side colli-
sion. ●
Collision from the side ●
Collision from the rear ●
Vehicle rollover
●
Collision from the side to the vehicle body
other than the passenger compartment ●
Collision from the side at an angle
●
Collision from the front
●
Collision from the rear
●
Vehicle rollover

1381-8. Safety information
The SRS curtain shield airbags are not generally designed to inflate if the vehicle is
involved in a frontal or rear collision, if it pitches end over end, or if it is involved in a
low-speed side collision.
■
When to contact your Lexus dealer
In the following cases, the vehicle will require inspection and/or repair. Contact
your Lexus dealer as soon as possible. ●
Any of the SRS airbags has been inflated. ●
Collision from the front ●
Collision from the rear ●
Pitching end over end
●
The front of the vehicle is damaged or
deformed, or was involved in an accident
that was not severe enough to cause the
SRS airbags to inflate.
●
A portion of the doors is damaged or
deformed, or the vehicle was involved in an
accident that was not severe enough to
cause the SRS side airbags and curtain
shield airbags to inflate.
●
The pad section of the steering wheel,
dashboard near the front passenger airbag
or lower portion of the instrument panel is
scratched, cracked, or otherwise dam-
aged.

1391-8. Safety information
1
Before driving ●
The surface of the seats with the side air-
bag is scratched, cracked, or otherwise
damaged.
●
The portion of the front pillars, rear pillars
or roof side rail garnishes (padding) con-
taining the curtain shield airbags inside is
scratched, cracked, or otherwise dam-
aged.

1401-8. Safety information
CAUTION■
SRS airbag precautions
Observe the following precautions regarding the SRS airbags.
Failure to do so may cause death or serious injury. ●
The driver and all passengers in the vehicle must wear their seat belts properly.
The SRS airbags are supplemental devices to be used with the seat belts.●
The SRS driver airbag deploys with considerable force, and can cause death or
serious injury especially if the driver is very close to the airbag. The National
Highway Traffic Safety Administration (“NHTSA”) advises:
Since the risk zone for driver’s airbag is the first 2 - 3 in. (50 - 75 mm) of inflation,
placing yourself 10 in. (250 mm) from your driver airbag provides you with a
clear margin of safety. This distance is measured from the center of the steering
wheel to your breastbone. If you sit less than 10 in. (250 mm) away now, you can
change your driving position in several ways:
• Move your seat to the rear as far as you can while still reaching the pedals
comfortably.
• Slightly recline the back of the seat.
Although vehicle designs vary, many dr ivers can achieve the 10 in. (250 mm)
distance, even with the driver seat all the way forward, simply by reclining the
back of the seat somewhat. If reclining the back of your seat makes it hard to
see the road, raise yourself by using a firm, non-slippery cushion, or raise the
seat if your vehicle has that feature.
• If your steering wheel is adjustable, ti lt it downward. This points the airbag
toward your chest instead of your head and neck.
The seat should be adjusted as recommended by NHTSA above, while still main-
taining control of the foot pedals, steering wheel, and your view of the instrument
panel controls.

1411-8. Safety information
1
Before driving CAUTION■
SRS airbag precautions
●
The SRS front passenger airbag also depl oys with considerable force, and can
cause death or serious injury especially if the front passenger is very close to the
airbag. The front passenger seat should be as far from the airbag as possible with
the seatback adjusted, so the front passenger sits upright.●
Improperly seated and/or restrained infants and children can be killed or seri-
ously 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 ar e safer for infants and children than the
front passenger seat. (  P. 1 5 0 ) ●
If the seat belt extender has been con-
nected to the front seat belt buckles but the
seat belt extender has not also been fas-
tened to the latch plate of the seat belt, the
SRS front airbags will judge that the driver
and front passenger are wearing the seat
belt even though the seat belt has not been
connected. In this case, the SRS front air-
bags may not activate correctly in a colli-
sion, resulting in death or serious injury in
the event of a collision. Be sure to wear the
seat belt with the seat belt extender.

1421-8. Safety information
CAUTION■
SRS airbag precautions ●
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 ai rbag 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 pillars.
●
Do not allow anyone to kneel on the pas-
senger seats toward the door or put their
head or hands outside the vehicle.

1431-8. Safety information
1
Before driving CAUTION■
SRS airbag precautions
●
If a vinyl cover is put on the area where the SRS knee airbags will deploy, be sure
to remove it.●
Do not use seat accessories which cove r the parts where the SRS side airbags
inflate as they may interfere with inflation of the airbags. Such accessories may
prevent the side airbags from activating co rrectly, disable the system or cause the
side airbags to inflate accidentally, resulting in death or serious injury.●
Do not strike or apply significant levels of force to the area of the SRS airbag
components.
Doing so can cause the SRS airbags to malfunction.
●
Do not touch any of the component parts immediately after the SRS airbags have
deployed (inflated) as they may be hot.
●
If breathing becomes diffic ult after the SRS airbags have deployed, 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.
●
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 attach anything to or lean anything
against areas such as the dashboard, steer-
ing wheel pad or lower portion of the
instrument panel.
These items can become projectiles when
SRS driver, front passenger and knee air-
bags deploy. ●
Do not attach anything to areas such as the
door, windshield glass, side door glass,
front and rear pillars, roof side rail or assist
grip. ●
Do not hang coat hangers or other hard
objects on the coat hooks. All of these
items could become projectiles and may
cause death or serious injury, should the
SRS curtain shield airbags deploy.