Pioneer AVH4100NEX Faceplate Disassembly
 

I left my window open during a snow storm and I think water got into the stereo buttons. The touch screen works fine but the physical button at the bottom re-assigned themselves. So now Volume Up=Mute, Mode and Program Up both open the face plate, etc.

I looked at a diagram (attached) from PacParts and I'm thinking it's not the buttons I actually touch or the buttons behind those, but rather the circuit board (#21 on the diagram). It would be an easy fix if this were the case but does anyone know how to disassemble the face plate? I've taken the 2 side screws out from each side but where should go from there?

Any suggestions would be greatly appreciated.

Thanks - Matt