2010 Lexus IS 250 Owners Manual - Page 184

103

1-7. Safety information

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SRS airbag deployment conditions (front airbags)

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The front SRS airbags will deploy in the event of an impact that exceeds the

set threshold level (the level of force corresponding to a 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 if the vehicle strikes

an object, such as a parked vehicle or sign pole, which can move or deform on

impact, or if the vehicle is involved in an underride collision (e.g. a collision in

which the front of the vehicle “underrides”, or goes under, the bed of a truck, etc.).

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It is possible that in some collisions where the forward deceleration of the vehi-

cle is very close to the designed threshold level, the SRS front airbags and the

seat belt pretensioners may not activate together.

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The SRS front passenger airbag will not activate if there is no passenger sitting

in the front passenger seat. However, the front passenger airbag may deploy if

luggage is put in the seat, or the seat belt is fastened, even if the seat is unoccu-

pied. (

→

P. 111)

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SRS airbag deployment conditions (side airbags)

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The SRS side 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 a 3300 lb. [1500 kg] vehicle colliding with the vehicle cabin from a direc-

tion perpendicular to the vehicle orientation at a speed of 12 - 18 mph [20 - 30

km/h]).

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The SRS side airbag on the passenger seat will not activate if there is no passen-

ger sitting in the front passenger seat. However, the side airbag on the passen-

ger seat may deploy if luggage is put in the seat, even if the seat is unoccupied.

(

→

P. 111)

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Conditions under which the SRS airbags may deploy (inflate), other than a colli-

sion

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.

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Hitting a curb, edge of pavement or hard

surface

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Falling into or jumping over a deep hole

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Landing hard or vehicle falling