**security Light**
#2
its the vats system. try cleaning your chip in the key with rubbing alcohol and see if it fixes it. if not your looking at repairing the orange wires in the column and possibly a new ign switch
run a search on vats and it will answer some more questions
run a search on vats and it will answer some more questions
#4
well if your car is still starting and the security light is on yeah your contacts inside the column that contact the chip are about to wear out, if its not starting at all and the light is on get ready to dish out some big bucks . thats if you take it to a dealer