flashing 4th and D Tiptronic

[tonythetiger]

P0710 Transmission temperature sensor
P1823 Pressure Regulator3
P1818 Pressure Regulator2

transmission works normal, recent transmission service (tranny was already exhibiting the flashing lights) and fluid didnt look burnt or anything.

I heard from the previous owner that when he got the car, the tranny was very low on ATF and he had it topped off. (it was not flashing the error lights) Again, I serviced the tranny after a couple of months and noticed the lights, this didnt stop the flashing.

I am considering running a cleaner/flush in the tranny before doing a series of drain/fill operations with the hope that I can clean up the regulators of varnish before I give up and swap this out with an extra tranny I have.

Anybody have a product in mind for this?