31
1-1. For safe use
1
For safety and security
US motor vehicle safety standards (FMVSS208). The airbag sensor assembly
(ECU) controls airbag deployment based on information obtained from the sen-
sors etc. shown in the system components diagram above. This information
includes crash severity and occupant information. As the airbags deploy, a chemi-
cal reaction in the inflators quickly fills the airbags with non-toxic gas to help
restrain the motion of the occupants.
■ If the SRS airbags deploy (inflate)
● Slight abrasions, burns, bruising etc., may
be sustained from SRS airbags, due to the
extremely high speed deployment (infla-
tion) by hot gases.
● 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 front seats may be hot for sev-
eral minutes. The airbag itself may also be
hot.
● The windshield may crack.
● All of the doors will be unlocked.
(P.97)
● The brakes and stop lights will be con-
trolled automatically. (P.219)
● The interior lights will turn on automati-
cally. (P.244)
● The emergency flashers will turn on auto-
matically. (P.306)
● Fuel supply to the engine will be stopped.
(P.313)
● For Lexus Enform Safety Connect sub-
scribers, if any of the following situations
occur, 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” but-
ton) 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 communi-
cate, the agent automatically treats the
call as an emergency and helps to dis-
patch the necessary emergency services.
(P.56)
• An SRS airbag is deployed.
• A seat belt pretensioner is activated.
• The vehicle is involved in a severe rear-
end collision.
■ 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 corre-
sponding 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 situ-
ations:
• 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
● 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 pas-
senger 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
put in the seat, even if the seat is unoccu-
pied.
■ SRS airbag deployment conditions (SRS
side airbags)
The SRS side airbags will deploy in the
event of an impact that exceeds the set
threshold level (the level of force corre-
sponding to the impact force produced by
an approximately 3300 lb. [1500 kg] vehi-
cle colliding with the vehicle cabin from a
direction perpendicular to the vehicle ori-
entation at an approximate speed of 12 - 18
mph [20 - 30 km/h]).
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