I'm absolutely melting here. Yesterday my car's AC was working perfectly fine, ice cold. This morning I started it up and it's just blowing hot, humid air. No warning, no strange noises, just nothing. I'm trying to figure out if there's anything simple I can check before I call a tow truck. I was looking online for a car cabin cooling troubleshooting guide to help me narrow it down. One article I found suggested checking the AC compressor clutch to see if it's engaging when I turn the system on. It also mentioned checking for any blown fuses related to the AC, since a sudden failure can sometimes be electrical. Has anyone had their AC fail completely and suddenly like this? Was it something simple like a fuse or relay, or was it a major component like the compressor?