I started my car this morning and after driving for 5 mins. I get a short beep sound and the ac starts to turn on full blast and neither radio or climate controls work. I saw some forums but still confused on what the cause and solution would be.

 

The AC and radio controls are all on one board. If I unplug the harness, the blower motor defaults to full blast.

Check yours. Check fuses too. If all is good, then your radio/AC board probably just went bad. Pretty common on these cars.