BLAUPUNKT RADIO CODE?

My Radio/cd player is for a Fiat Multilpa

Make : BLAUPUNKT
Code - stamped on side of player "BP237233958618", if it help the BP is proceeded by "815"
Serial no. is: 7642 372 316 - this is recorded on the blaupunkt sticker the other one is engraved on the side of the radio/cd.
Also from the handbook i am looking for a 4 digit code which have digits between 1 and 6 (inclusive)...thanks
there are some other codes on a sticker but I suspect this is the main one.