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Dave Nova
Dave Nova, Cadillac Technician
Category: Cadillac
Satisfied Customers: 1522
Experience:  ASE Master Certification. GM World Class Certification
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My name is, I have a 2005 sts that I stopped at mailbox, got

Customer Question

Hi my name is ***** ***** have a 2005 sts that I stopped at mailbox, got out of car got mail when I got back into car I got an error that theft deterrant was active can't get car started
Submitted: 1 year ago.
Category: Cadillac
Expert:  Jared D replied 1 year ago.

It sounds like either the anti-theft chip in the key has gone bad, or the transducer in the dash that receives the signal from the key has gone bad.

Do you have a spare key you could try?