Honda Acura TSX Sport Wagon 2011 Owner's Manual page 30

Seat Belts About Your Seat Belts
Automatic Seat Belt Tensioners
The front seats are equipped with automatic seat belt tensioners to enhance
safety.
The tensioners automatically tighten the front seat belts during a moderate-to-
severe frontal collision, sometimes even if the collision is not severe enough to
inflate the front airbags.
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Automatic Seat Belt Tensioners
The seat belt tensioners can only operate once.
If a tensioner is activated, the SRS indicator will
come on. Have a dealer replace the tensioner and
thoroughly inspect the seat belt system as it may
not offer protection in a subsequent crash.
During a moderate-to-severe side impact, the
tensioner on that side of the vehicle also activates.