When I picked mine up a couple of weeks ago, it didn't have the SAT radio in the menu either, but I knew I had ordered it (it was on the bill of sale and it was clear I had a larger antenna than the ones in the lot that didn't have it). Still, it wasn't in the menu. About 2 hours later, after I had driven it home, it appeared in the menu system. I have no idea why it didn't show immediately, but maybe it's just something that takes a couple of cold starts to appear? (EDIT: Sorry, just saw the "2010" in your post. Never mind. Not the same issue because I'm sure it's been driven enough to not be the same issue as mine). I never got a reason why from my dealer, but I stopped asking because it's no longer an issue.
So, you should check your antenna. Is there a way you can compare it to an LR4 that you know doesn't have Sat radio? Maybe the dealer's demo unit? If you have the antenna, then maybe you have the same problem I had.
And yeah, I owe this forum some pictures of my new rig, which I love. I just haven't had the time to post them. Hopefully this week.