Satellite tuner: Notes
WARNING: This page is about a different car, the 2013 BMW X5, 2012 BMW X5, and 2011 BMW X5. However, it is still accessible from the selected car via links, so may be relevant.
The SDARS is a separate tuner for digital reception. SDARS receives the data in terrestrial form or via satellite. Two aerials are installed for reception. One aerial is for terrestrial reception another aerial is for digital reception.
If the satellite reception is disrupted, SDARS automatically switches to AM/FM reception. The loss of quality between digital radio and the standard AM/FM radio can be heard clearly.