I just got the 05 audi a8 and it did not come with the manual i cant seem to configure the memory seat

 

You can buy them from the dealer for pretty cheap, with an A8 you need one with all the buttons you have.

 

Position seat as desired. Hold down set button in door and then hold down the #1 memory button at same time until you hear a little click. You should then be good to go. Same with passenger seat. Holds 4 presets for each seat.

 

Here's a little more detail for all the memory functions on a 2004 A8L. Did you know you can adjust the seat through the MMI? I just found out.