I think the list has addressed this question before - what to do about the factory/fancy radio (I think it's called Heidelberg) that came with my van when I don't know what the code is and my battery went dead, hence locking up the anti-theft-coded radio.  I never coded the radio myself.  Is my radio frozen forever?  Any remedies?  I love this radio - better than even the one in my new commute car.  

TIA,
Donna, 1987 Wolfsburg