Has anyone heard of these hvac control boards failing? I did the conversion back back in 2019 and it has been awesome with absolutely zero problems. However a couple of months ago, I came out to a hot truck, turned it on like the thousands of times before and there was zero power to the a/c. No lights. No sounds. No blowing air. I checked all fuses under the dash and hood, all good. It has been getting continually worse, the a/c will randomly turn off then back on about 15 seconds later, or after a smack from my hand. It happens about 30-40% of my drives. I have pulled out the head unit and controller several times checking all my wire connections and they are solid. I also replaced the alternator because it was on its way out, and I thought maybe wasn’t delivering full power to the hvac controller. It turned itself off again today with the new alternator. I can press hard on or smack just below the buttons and it will usually turn back on. I’m out of ideas except maybe the control board itself is failing. I have 88650-60771…any suggestions would be appreciated.
I don’t think it is a common occurrence. I’ve heard of one guy on a forum ordering a replacement a year or so ago for a clients car but nothing else. The OEM part number for the board has been discontinued if I’m not mistaken.
I’d probably take it apart and inspect the circuitry for any issues. Or maybe a loose connector inside the assembly like ribbon cables.