That's a common problem.I have an 02 R170 (if you couldn't tell by my user name) and my power seats decide when they want to work and when they don't. I can't find any pattern to when the will or won't. What are the first things you would check?
It's the seat relay, located under the dash =)I was about to say K40? are y'all sure? I just soldered my k40 thingy trying to fix another problem and my seats were intermittent before and they still are. i'm about to click on the thread above to see what they say. I don't move my seats often but when I want to I want to be able to do so...nuisance