Toyota 2013 Corolla Owner's Manual page 45

1-3. Adjustable components (seats, mirrors, steering wheel)
STEP 3
Seat belt pretensioners (front seats)
60
Buckle, position and release the
seat belt.
The pretensioner helps the seat
belt to quickly restrain the occu-
pant by retracting the seat belt
when the vehicle is subjected to
certain types of severe frontal
collision.
The pretensioner may not acti-
vate in the event of a minor frontal
impact, a side impact or a rear
impact.