Car Stereos: Alpine MP3 CD receiver, digit pin number, alpine mp3

Question
After replacing the car battery the radio will not come back on.  Is there a way you have to reset?

Answer
Mine always called for a 4 digit pin number, before it would play.  Others have a sequence of buttons to push.  Depending on the model, there are certain instructions.  You should be able to find your owners manual online that has instructions on how to unlock it.  If not, you can email Alpine, and they will give you instructions via e-mail.  Hope this helps, Scott