After a week without battery my 2000 bmw e46 business cd asks fo a code, can anyone help me with that? Here is my HU details BMW Business CD 6512 - 6 902 661 BP9273 Y 7361738 FD110 Index 34 And on the second sticker says BLAUPUNKT-WERKE GMBH 7 649 273 042/44/40 Y 7361738 Thank you very much