Originally Posted by Mike141
Yep must turn it in with VCDS then do the button sequence. Without activating it in VCDS it won't work. Can't recall the button sequence, but just search hidden menu and it will tell you the sequence. I know you're new to the A8, but a VCDS cable is a must with these cars. Should be one of your first purchases after owning an Audi or VW.
Thanks for the tip about the cable. Is it safe to grab one from ebay or is it a preferred spot to get them from? I know they're probably a lot of knock off ones,don't want to buy a faulty cable that will fail in the process of doing anyhing