I got to the bottom of this. A mobile tech came to me for another issues and when I brought this up he instantly said "you probably don't have the latest maps". I was told over the phone that I had the latest maps but they were wrong. The mobile rep said the maps never finished downloading all the way and it kept failing. Anyway, once he hooked up his laptop and downloaded the maps manually to my car NOA showed up instantly. I would be willing to bet that 99.9% of the people that don't have NOA are running older maps. Go to a SC or get a mobile tech to update your car.