I appreciate the help, but maybe you missed post number 4. The AC is working now, mostly. I still have a random failure either upon startup or when I first press the AC button where it will flash at me. By turning it back off and then back on it has always started working. No idea why. It happens maybe 1 out of every 5 or 10 times I turn on the AC.

 

IToaster. Would you know where the relay is on an RX300 2004?

 

Are you referring to the ac relay?
im having the same problem my ac light keeps flashing