Air Bag Not Deploy problems of the 2006 Nissan Pathfinder

I was driving on hwy and I went to go around a curve and my steering wheel locked up I went off the road and came to a stop looking up at the bridge. When I went off the road my truck hit a hill (it hit around by my radiator) my truck then flipped and then hit another hill (hit by my radiator again) and came to a stop. My airbag didnt not deploy until my truck stop moving. And my seat belt did not lock me in place. I was slung around my front seat. I had to try to hold myself in my seat with my legs (pushing up on my steering wheel) I hit my head on my steering wheel, my window and my roof. I have a cracked femur from my steering wheel. And 2 compressed disks in my back. . When I realized my truck wasnt turning into the curve I hit my brakes but it didnt do anything bc my tires came off the ground and when it stopped I was on the creek bank.

Noticed a few months ago that the light for the front passenger air bag was off when an adult was sitting in the front. I took it in for an oil change and the Nissan dealer said that the front air bag sensor in the seat was defective. So the air bag will not deploy if in an accident because it doesn't register that someone is there.

I was in a front in car accident going around 45-50mph and my airbags did not deploy.

A few months after I purchased my vehicle in 2007, I was in a car accident. However, my front-air bags did not deploy although the air-bag light came on and is still on till this day. I took the vehicle in to a Nissan dealer and they told me that the light is on because the airbag sensor wiring harness was damaged. I asked the service manager if the airbag sensor would come on even thought he air-bags never deployed. The service manager said that it is possible that the airbag light will come on and the airbag sensor wiring harness was damaged eventhough the airbags never deployed. There is a current a recall on the airbag sensor for this vehicle. I called Nissan and they told me that the air-bag sensor was covered under their extended warranty on the sensor. However, when I contacted the dealership to have it replaced they told me that since the sensor came on as of a result of an accident it was not covered under the sensor recall. I don't understand why the air-bag sensor light is still on eventhough the airbags never deployed. This seems like some sort of failure in the airbag system of the vehicle and not due to the accident.