When I try to install a new battery the car starts and drives but the alarm will not shut off. I have read various posts across forums net wide and the problem is typically the car will not start while the alarm blares and have yet to find one addressing this issue. There may be other electrical issues: For example something is draining the battery when the car is off and there are good posts to troubleshoot that, an issue which clearly needs solving. But to do the testing it would be nice to have a battery in place without all the racket. Can anyone tell me how to disconnect the alarm so I can get to that point? I purchased this car 3 years ago so I do not know if the alarm is OEM or aftermarket. Nor do I know the "code" - do I take my title over to a BMW dealer to obtain it? Any assistance is much appreciated.