2012 Ram Heater/AC Doesn't Keep Temp Memory
 

Don't know what caused it to start happening, but when I restart my 2012 Ram 3500 Diesel, the set temp goes to 69 degrees even though I've been shutting it off at 72 degrees during this Winter.
It used to display the same temperature on restart that I had it set to when I shut it down.
Anyone else have this problem and solved it? Or know where to go for more information? Google hasn't helped.
Thank you.