My 2013 Lincoln MKS has developed a problem with the heat/AC control.

What is your question?

In addition to the heat control going up on its own, the radio volume control system does the same thing. Had ac on at 70 degrees with outside temp at 78, the temp setting will start increasing up to 85 degrees an start pumping heat vs. Cool air

What makes this problem better or worse?

It is intermittent, doesn't do it 100% of the time.

How long has your 2013 Lincoln MKS had this problem?

Few weeks