Hyundai Santa Fe Owner's Manual page 89

Safety system of your vehicle
In an 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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OTL035069
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 sensors
may be significantly reduced by such
"underride" collisions.
OTM038072
Front air bags may not inflate in
rollover accidents because front air
bag deployment would not provide
additional occupant protection.
i
Information
The side and curtain air bags may
inflate in a rollover situation, when it
is detected by the rollover sensor.
OTL035068