Hyundai i20 Owner's Manual page 86

• Front air bags may not inflate in side
impact collisions, because occupants
move to the direction of the collision,
and thus in side impacts, frontal air
bag deployment would not provide
additional occupant protection.
• In a slant or angled collision, the force
of impact may direct the occupants in
a direction where the air bags would
not be able to provide any additional
benefit, and thus the sensors may not
deploy any air bags.
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• Just before impact, drivers often brake
heavily. Such heavy braking lowers the
front portion of the vehicle causing
it to "ride" under a vehicle with a
higher ground clearance. Air bags
may not inflate in this "under-ride"
situation because deceleration forces
that are detected by sensor may be
significantly reduced by such "under-
ride" collisions.
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• Air bags do not inflate in rollover
accidents because vehicle can not
detect rollover accident.
However, side and/or curtain air bags
may inflate when the vehicle is rolled
over after side impact collision.
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