My Audio 10 (Becker BE 3100) has a mind of it's own and decided to stay on, even though switched off. No display in the window, completely blank, but it kept going. I took the unit out and unplugged the rear connectors. Obviously it stopped playing, but now it demands a code. Now I don't have this, not transferred with vehicle. I have my Serial Number which is X1037120. Can anyone help with the code please? Neil