2008 v6.
Cayenne was sitting over the winter and wasn't driven. Notice water was leaking into vehicle and fixed the dreaded harness issue. Battery died then fixed that also. After startup of 5 mins at idol. Heard a pop, saw steam for a second come out of vents now ac will not blow cold. Also car is running hot it looks like. Coolant is at 194 idle but goes up to 200 when in motion. Feels like it's about to over heat. Any ideas??