Report "I have a Blaupunkt Reno 2 in a 1992 Porsche 698 and code on the scratch paper in the book does not work and i think it may now be locked. Ser No. 7 647 881 170 i may be trying to enter it the wrong way. why are this thing so complicated? got perty good at setting the clock on the VCR. LOL Can you help. John"