i was involved in a front end collision with a car that pulled out in front of me without looking. I ended up T-boning the car at approx. 20-25 MPH. Both myself and my wife were wearing our seat belts. Mine held but the passenger one held only the lap belt part. The shoulder part of the SB allowed her face to go crashing into the dashboard. She ended up with abdominal injuries and head trauma. I took it to the dealer and they say the seat belt will need to be replaced as it is defective. (You think). I can pull on the shoulder strap rapidly and it will not 'catch'.