Replacement key activated the security system?

NAOMI7600

MEMBER
2002 CADILLAC DEVILLE
250,000 MILES

I lost my key and I have another key that turns the ignition, but it shows that security theft. How can I get it to start my car?

Monday, June 26th, 2023 AT 3:02 PM

1 Reply

JACOBANDNICKOLAS

MECHANIC
109,758 POSTS

Hi,

Is the spare key an original? Does the key have a black or gray end that contains a transponder in it?

Do me a favor. Turn the key to the run position so the theft light turns on. Allow it to remain on for approximately 10 minutes to see if the light turns off. If it does, see if it starts.

Let me know what you find.

Take care,

Joe