Has anyone found a solution to this?? I have the same problem and have been scouring the internet for a solution. This thread is the only one anywhere which exactly describes my symptoms, but doesn't have a solution D:
I had the same issue with mine (2014 sr5), took it to Toyota today after two failed attempts with auto sparkys, they done an ecu reset I believe and replaced a fuse, $75, I assume they had the software to do it as nothing come up on a scan tool, works like new now, hope this helps cheers
One solution "might" be to buy a 2004 Hilux and then all you have to do is turn the outlet or temp dial or slide the appropriate knob to adjust your desired comfort level? Someone hinted earlier, no computers to go wrong then!