Actually, my two year old GS430 doesn't appear to have the memory functions. I'm not sure if they were an optional extra at the time and the original owner didn't need them or whether they were just not part of the spec then. Strange really considering how everything else is there. Electric seats are great though, no more half-standing, half-jumping manoeuvres, trying to adjust the seats :)
One other thing, you really need to do the Gold Member thing. You'll need all the discounts you can lay your hands