Entune Radio Defaults back to 89.7

2015 Limited with Entune head unit. Just recently replaced my battery. Now if I don't drive for a week, I notice that when I turn on my radio, it defaults back to 89.7 station. The presets are all still there. Its not the end of the world, just annoying. Anyone know of some kind of radio reset that needs to happen after replacing battery?

 

Are you sure the new battery is good? Sometimes batteries are bad when you buy them. Does the truck start ok after a week?

 

Thanks, no problems with battery, truck starts right up. It is strange though, it only goes back to 89.7 if I let it sit unused for a few days/week. If I actually take it out for errands, the day I am using it, it doesn't reset.