Bought a 1996 c250 td estate about a month go and the buttons for scan on the head unit stopped working in the first week. Now i'm stuck on non local frequencies for the radio and cant skip tracks on cds that i dont like. I know where there is another head unit identical to mine in a nearby scrapyard the model is Becker BE 1650 serial number V1215249. If somebody could give me the code you'll make an old merc very happy