2004 Ford Escape air bags problems

Tl*the contact owns a 2004 ford escape. The contact believed that he may have passed out while driving. He did not remember crossing the intersection and crashing into a four foot pipe filled with concrete, and then flipping the vehicle. The air bags failed to deploy, and the contact sustained a ruptured left lung. The vehicle was destroyed. The current and failure mileages were 87,000.

The air bag warning light stays on. Took it in to see what the problem was. They said we need to replace the pretensioner and connecters. Very expensive estimate. I did a little research and someone suggested checking under the seat (driver side) for a loose connection. We have been adjusting the seat back and forth because we have a teenager learning to drive. We did check under the seat to make sure there was not a loose connection. Now the air bag light does not stay lit.