My EATC system can best be described as "lethargic". Pushing buttons gets things moving, from floor to vent to defrost, etc. but the system is oh-so-slow to move. I haven't had a chance to run the self test yet and get any codes displayed. Could it be possible that the car sat for an extended period and now the system needs time to get moving? Kinda like myself, as I get older! Everything seems to move to the desired setting, but not as fast as I'd like.