Cadillac Repair Questions? Ask a Mechanic for Answers ASAP
So, the battery is dead, and you can't jump start it? Why do you say that the theft deterrent system is preventing it?
OK, so you have a message. This theft deterrent system works by using a transponder in the key. Do you have a different key for this car that you can try?
You can't "unlock" the security system. If it's detecting a fault, it simply will not allow the car to start. We have to address the fault, if it has one.
What led up to where you're at right now? Did the battery go dead, and then you had the theft deterrent issue? Or did you have a theft deterrent issue, and the battery went dead while trying to start it? Give me whatever background information you can on this, so I can figure out how we ended up here.
There is no series of button presses or anything like that to get around a theft deterrent issue. If it were that simple, it wouldn't be a very good theft deterrent, right?
I submitted your question to customer service for a refund. Good luck with it.