Toyota 2014 Sienna Owner's Manual page 209

1-7. Safety information
Conditions under which the SRS airbags may deploy (inflate), other
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than a collision
The SRS front airbags and curtain shield airbags may also deploy if a seri-
ous impact occurs to the underside of your vehicle. Some examples are
shown in the illustration.
Types of collisions that may not deploy the SRS front airbag (SRS front
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airbags)
The SRS front airbags do not generally 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
collision. But, whenever a collision of any type causes sufficient forward
deceleration of the vehicle, deployment of the SRS front airbags may occur.
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SIENNA_OM_OM45483U_(U)
Hitting a curb, edge of pavement or
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hard surface
Falling into or jumping over a deep hole
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Landing hard or falling
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Collision from the side
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Collision from the rear
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Vehicle rollover
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