Why does the anti theft keeps going off on 2004 cadillac srx even though doors unlocked?

The anti-theft system on a 2004 Cadillac SRX may trigger even with the doors unlocked due to a malfunction in the door sensors or wiring, which can incorrectly signal that the vehicle is being tampered with. Additionally, issues with the key fob, such as a low battery or faulty signal, might prevent the system from recognizing the key, leading to false alarms. It's also possible that the anti-theft module itself is defective, causing it to activate unnecessarily. A thorough diagnostic check can help identify the specific issue.