2006 Jeep Liberty body & structure problems

My daughter was driving and a truck in front of her stopped quickly causing my daughter to slam on brakes to avoid a collision but ended up rear ending the truck. Her airbag deployed and her jeep had to be towed from the site. It has been in the shop since 4/28/14 and was repaired except for the clock spring which is necessary for the new airbag. We have been told that this part is no longer produced or manufactured by any vendor in the country.

The contact owns a 2006 Jeep Liberty. The contact stated that while driving at an undisclosed speed, the vehicle made an abnormal sound. The contact stated that all 4 windows had detached from the track. The vehicle was taken to the dealer, who informed the contact that the failure was a common failure. The vehicle was repaired; however, the failure recurred. The manufacturer was made aware of the failure. The failure mileage was approximately 4,707.