There were a very small number of 2004 W12 Phaetons imported into North America prior to the delivery of the big tranche of Premier Editions. These very early production 2004 W12s were, for the most part, press cars or VW executive vehicles. They did not conform to the build specification for the "Premiere Edition", all of which had exactly the same option fitment (and exactly the same colour scheme - black outside, beige inside).
Have a look at your VIN - if it ends in a number below 8000, it is possible that you have one of these early production cars. Have a look at your trunk lid hinges as well - if you have the cast aluminum hinges, then you have a power trunk, and if you have a power trunk, then you have a microswitch behind the VW logo on the trunk lid (I will bet the rent money on that last sentence).
Below is a picture of the cast aluminum trunk hinges