I disconected original blaupunk cassete radio and now when i put it back on power it needs a code to enter, but i dont have the code.
How to fix this problem?

i somewhere read that it can be a VIN from the vehicle for the code?

I also have now a cd player original form p206 06year, but when i conect radio in to mine p206 00year ,nothing hapens, i only can eject or load CD and thats it, nothing on display to see?