Lexus GX 2004-09 :: Check Connection Of Air Conditioner Message But Everything Works On GX470

I recently purchased a used 2004 GX470.

Everything on the Info/Nav Center screen seems to work, at least as far as I know so far, except when I push the "Climate" button, I get the blank screen with the exception of the "Check the connection of the air conditioner" message.

When I got it, the A/C wasn't working, but it was trying. Today I added gas to the system (it was a bit low) and cleaned the cabin air filter (disgustingly dirty, with next to no air movement through it). Now A/C is there! (it is 100+ today!)

To get around the missing climate control screen (and what I assume are controls thereon) I turn on the recirculation button and also the "auto" button, and raise or lower the temperature controls. Heat works when I turn the temp up, A/C tries when I turn it down. But I still get the message on the control screen.

I assume that the control screen for "climate" also includes some widgets for controlling and/or setting options, such as (hopefully) just running the fan without A/C with external air (should I so desire on a cooler day) and stuff like that.

I have seen others fix the similar problems by reconnecting some clips behind the screen, which I can certainly try out, but seems like the other similar problems, when the issue was a wire loom connector behind the screen, that they had other problems, such as the A/C not working.

I THINK all my systems are working, I just can't see the climate control screen. All the other systems (audio, settings, maps (different subject later *L*), etc. all work and seem to display OK, so I don't think it's the screen.