The system has detected a problem in the airbag system and will have to be diagnosed by a Ford dealership service department, DO NOT attempt to fix this yourself, only let a dealer service tech diagnose and repair the problem.

The light is on because the ECU has detected a problem with the Supplemental Restraint System (SRS). It can be any number of things that is wrong. Working on the SRS is very hazardous so for that reason it should only be repaired by a trained professional. This is NOT a DIY repair. Take it to a Ford dealer for repair.

Airbag

See your dealer. Ford has recalls for defective air bags.

Something is wrong, probably a bad sensor. To find out what, you need someone to read the computer codes.

Read this post on warning lights.

http://ricksfreeautorepairadvice.com/che...

Try wearing your seat belt.

Your airfags are non functioning.