Averagehuman
New member
I've had an issue where the defrost will come on by itself shortly after I start the vehicle. 2020 JTR. Usual only happens when it's hot and none of the controls will work to turn it off. Last thing I want when it's 100 outside is the fucking heat blasting full force with no way to turn it off but I did find something that worked. I've searched online with very basic answers on try this and check that. But what worked for me for the last 3 days without it coming back on was to start the truck, open the hood and fuse box lid. Pull fuse f10 which is the ignition and let the truck die. Plug it back in and start it up. No more auto defrost. I have full control over my ac again. Hope this helps someone else.