Hi. I have a 97 4-cyl. Toyota Camry. I recently replaced the battery and have had a strange problem. The Theft Deterrent system will randomly go off. For instance, I'll be driving down the road no problem and the horn will start honking repeatedly (like the alarm going off). It will stop for awhile if I pull over and turn off the car but it comes back. Any ideas on what the problem is or how to fix it? Thanks.