...show on the RNS-E display? Does it still show the "This vehicle is pre-equipped for satellite radio... please see your dealer" message, or will it say something else? I'm retrofitting an XM unit in my S4, and I bought it used from someone who said it was still activated for a few months. When I first plugged it in and turned on the system I saw a station list for about 2 seconds and then it went back to the beforementioned "please see your dealer" screen. I haven't seen the tuning screen since then, but I would hate to call and activate it under my name if it is already pre-paid for a few months (no reason to give XM more money than they deserve) and I just have it installed wrong or something.