don sug

I have a 2005 300es with the same radio button. I asked the dealer why I don't have xm radio. He said that the cars did not automatically have xm radio installed. If you want satellite radio, you have to get a certain module installed into the car. Don

The present GPS data disc has the following info: w41 86271-33044 464210-0581 Data ver 4.2 Anyone know if an updated data disc is available. If so, how is it identified, and how can it be obtained? Thanks Don