Lexus RX 450h 2010 Owner's Manual page 127

1-8. Safety information
SRS airbag deployment conditions (SRS side airbags and curtain shield airbags)
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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 perpendicular to the vehicle orientation at an
approximately speed of 12 - 18 mph [20 - 30 km/h]).
Conditions under which the SRS airbags may deploy (inflate), other than a colli-
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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.
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Hitting a curb, edge of pavement or hard
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surface
Falling into or jumping over a deep hole
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Landing hard or vehicle falling
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The angle of vehicle tip-up is marginal.
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The vehicle skids and hits a curb stone.
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