 It's a position sensor. It tells you what position the actual seat is in, moving forward and back. It uses that for the deployment speed and things like that of the airbags. You've got the dual-stage airbags and all that, and it wants to know, is somebody sitting on top of it, or are they back? Do they have their seat belt on? All that kind of stuff. Did you remove the seats or something, or did you do anything weird that would have caused that, or...?