You might want to use the car ventilation feature available from the menu prior to you returning to the car. At least this should help bring the interior down to ambient before you get in. This would only work if you know when you'll be getting back, as if you're wrong, it could easily heat back up again.
They never said it was a cooled seat...ventillated, yes, but not cooled. The other big thing in the active seat package is the motor that helps prevent deep vein thrombosus on a long trip. What color is your interior? I purposely chose a lighter color to help minimize the heat soaking. So far, that does seem to have helped.