Stock Radio problem

The last month or so My stock radio started acting "funny". It will drift off the station its on? If its on 96.5 it will move to 96.4 or 96.6 same thing on am stations. One day it "drifted" up and down all the way to work , then no problems for days. Some time it will turn off? Any ideas? Maybe its haunted? Has anyone else had this problem?

 

Haunted...

Do you touch buttons with dirty hands? I wonder if the button is stuck, weak, or sensitive to touch or even wind.

 

No, my hands aren't dirty. The windows are up ,so
I doubt its the wind. I thought at first that my power cable to my gps was rubbing it. But I moved the cable and still does it? Just plane weird. I wonder if my battery is slowly dying and its affecting my radio?