I have the exact same warning tone intermittently over my radio as well... and it seems to go away after a couple of hours of "off" time. Yesterday, my offroad pages "error-ed" when I tried to load them, and then all My APP icons disappeared. Soon after, radio died and phone would not work. I...
I was offroading today and i went to my offroad pages, it said there was an error loading, then my satellite radio, navigation, and all additional APPs either quit working or disappeared completely. i also lost all volume control and phone abilities.
I am running 37x12.5x20R ProComp MTs I love the ride... but I am only averaging 11.4 mpg. I am in Palm Desert CA and have a set of (5) 37x13.5x20R IronMan MTs that only have 480 miles on them for $150.00 ea.
LOL! Consider yourself really lucky! I am averaging 11.2 and I am excited when I get 14.7 down hill on a windy day! Of course my 37's don't help!... nor my lead foot! :)