I have a Sorrento EX (2003). Air blows cold for first half hour to 45 minutes. Then, air begins to blow warmer and eventually no cool air at all. If I shut off A/C for 15 - 20 minutes and then turn back on, it begins to blow cold air again.
Does anyone have a similar problem or suggestions? My guess is it may be low on refrigerant or possibly a bad low-pressure sensing switch.
Thanks.