2010 and up all have a satellite tuner built into the i-drive head unit. Since yours has the prep option, the tuner is disabled and needs to be enabled. You need to purchase/obtain an FSC code and have a coder add it to your i-drive. The dealer can do it, or there are other online options. There are ways to do this for free (cic patcher) however you need to be able to code and have the appropriate coding cable.

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2009 35d, 2006 325i & 330i