Lexus ES 300(h), Owner'S Manual

Page: 45 / 534

44
1-1. For safe use
Driver’s seat belt buckle switch
Airbag sensor assembly
“PASSENGER AIR BAG” indicator lights (if equipped)
Front passenger’s seat belt buckle switch
Front impact sensors
The main SRS airbag system components are shown above. The SRS airbag sys-
tem is controlled by the airbag sensor assembly. As the airbags deploy, a chemical
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.
● The interior lights will turn on automati-
cally. (

P.364)
● Parts of the airbag module (steering
wheel hub, airbag cover and inflator) as
well as the front 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.
● The emergency flashers will be turned on
automatically. (

P.438)
■
PCS-linked SRS airbag deployment
control (vehicles with Lexus Safety Sys-
tem +)
If the PCS (Pre-Collision System) deter-
mines that, based on information from a
front side radar sensor, the possibility of a
side collision is high, the SRS side and cur-
tain shield airbags will be prepared to oper-
ate.
■ 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 20 - 30
km/h [12 - 18 mph] 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
●
Depending on the type of collision, it is
possible that only the seat belt preten-
sioners and SRS knee airbags will acti-
vate.
■ SRS airbag deployment conditions (SRS
side and curtain shield airbags)
● The SRS side and 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
1500 kg [3300 lb.] vehicle colliding with
the vehicle cabin from a direction per-
pendicular to the vehicle orientation at an
approximate speed of 20 - 30 km/h [12 -
18 mph]).
● Both SRS curtain shield airbags may
deploy in the event of a severe side colli-
sion.
● Both SRS curtain shield airbags may also
deploy in the event of a severe frontal col-
lision.
N
O
P
Q
R