I believe it is part of the anti-theft system. When it happens simply wait 3 minutes and then engage key.
First thing to do is check that the compressor clutch is engaging, when it is not working properly. If the outer pully is turning, as it does whenever the engine is running, and the inner part of the clutch is not turning, that could be your problem bad clutch or electrical connection . The inner and outer parts of the clutch need to be turning for the compressor to function. Have someone turn the AC on and off while you watch the clutch.
tranny fluid is very low
What is wrong when your toenail starts turning green?
Problem is most likely your alternator or your fuel pumps.
Cadillac
A common problem m[ght be the starter gear teeth worn or broken or starter mounting bolts loose.
1997 cadillac deville will not turn over
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I have the same problem. Either low pressure on fuel pupm or one of the injectors is leaking overnight. Im sure once you get it started it always starts
cadillac
Queue
What kind of car year make and model?