security light in dash is on
 

I have a problem maybe someone can help me. I have a 2007 dodge 2500w/5.9 cummins.The problem is I think I inadverently disabled my security system and the hands free key unloc&lock will not work.When I try to start it the red security light in the lower right quadrant of the instrument cluster is on and the starter will not engage. Can anyone help me with this?
thanks,
shumly