when I lock / arm my car, 3 seconds later, the alarm sounds... if not, a few hours later... it sounds nonstop... I disarm, it does it again - within seconds. Basically, the car cannot be left unnatended. I had to cancel my weekend plans to leave town as a result and am not a happy camper. I can still salvage by leaving tomorow morning if someone can tell me how to turn the alarm off, disable it, whatever!!! please help me! thank you.