I recently purchased a '97 2.2 CL and I have the same problem as kotaro. My cd player doesnt work but the radio does. The battery has been replaced and I talked to the dealer, and they said the same serial code deal, but no price for that yet. If a replacement was required no matter how much work would be done $180 charge would be billed. I think i'm just gonna go buy a new alpine head unit. Any ideas on how to input that code and get the player workin?