...That said, as far as cleaning the existing control module, I'd give it a go, I just have no idea where it is, and how to get to it. If anyone has a step by step then I'd be willing to try it....
There's stuff between the driver's side headlight and the PDC. As you go rearward from the headlight along the fender, it is the first electronic module you hit. Recessed, and standing up like a book. A couple of screws that can be tricky to get to - just take your time.
...The fluid that was used was ATF+4. I still have the bottles. Would you like to pay that $1000 by check or cash?
It bit the bullet and got totally ripped off, of course. I'm embarrassed to say how much they charged me but at least I get a warranty with it and they checked everything else out. It was the computer that was faulty. Drives like a charm again. Thanks to everyone for their advice.