...goes off a few miles down the road? Our car has 115,000 miles on it.When my wife tried to start it the other day it would not do anything.After awhile it started.Another time she got it started and back out of the drive way and it cut off.I drove it today and the SECURITY light came on and after a few miles it went off.I talked to a friend of mine and he said try the other set of keys.I did and the security light did the same thing.I tried my valet key and the light did not come on. Does the keys have some kind of senor in them and the valet key does not.In my Pontiac maunal it said when the security light comes on it is the monitor PASS-KEY III and if it continuously there could be a problem with the pass-key III system. Is this something I need to worry about and can I continue to use the valet key