2002 Audi a6 3.0 w/ CVT, p0702 and p0722 codes
 

Long story short: car would go
now car no go. that's more or less it.

Anyone have something similar to this, or someone with experience want to give a prognosis? I mean aside from me being out a new transmission lol.

PRND flashes and those two codes show up. I'd love to have a look at the TCM and make sure it isn't broken or something, but I can't find out where it's located online. Some have said it's under the passenger seat carpeting, but no luck there.

Edit: more info wouldn't hurt maybe.
starts up fine and all, shifting into reverse causes the car to...make a noise I guess, like it's trying at least, but that's it. other gears don't make much if any noise.