Well, after a 16 year sabatical from owning a BMW, I have returned and now have a 2008 535Is. Love the car but it doesn't seem to have Serius. The radio in the car is code# S693A and says "satellite tuner preperation". Before going to the dealer, is anyone aware if this radio can be converted to receive Serius? I don't want one of those aftermarket little boxes that hook up to the radio and am wondering what choices are available to me. Thanks in advance for any responses to my inquiry. The wife loves Serius so I must find a way to keep her happy!