[spacebud]

Did you try resetting the media system? Small pin hole button on lower left near volume knob.

 

[spacebud]

Maybe also try a manual USB media system update?:

Navigation Updater | Official Kia Navigation Update Website

It updates a lot more than just the maps. Pretty much all the software running in that middle console stack. Others had good luck when the cabin temp sensors, etc. weren't working correctly.

If that doesn't work, then it has to be hardware related?