With the system on and the car running, unplug the temp sensor behind the front grille and then plug it back it. No idea why but it seems to force some kind of reset when you do that.

It's a lot easier with the grille removed.

 

 

I have no idea, there's nothing in the FSM about doing this but when I replaced my AC head unit last summer I wasn't able to change the temp from 90 degrees so I just started unplugging things while hot and when I did the front ambient sensor it started working. Worked perfectly ever since.

Well actually, how it went was I unplugged the front ambient sensor, then it said the outside temperature was like 127 degrees and over the course of about 30 minutes it slowly went back to what the temp ACTUALLY was but I could immediately set my temperature on the inside properly and it wasn't locked on 90 degrees anymore.

 

 

Were you able to get the 05-07 controller to work in your car?
When I ordered my controller and bezel I input my vin thinking only parts that fit my car would show up but instead I got this one all of the features work except the temp ****

 

I have this same issue, where the AC diagnostics look fine and no lights. However, when I try to change the A/C temp, driver side only lets me choose 75, 76 degrees. Passenger side works as we’d expect with full temp control. Any ideas? I’m stumped

 

Probably a failing AC auto amp.

If you have both sides locked together does it work normally?