I have no answer but I have the same problems. Window is going to the top and then half way down again. What I do is send it to the top stopping and starting by degrees but it's most unsettling not knowing what's going to happen next and really annoying too. Central locking doing the same as yours, plus you just wait for your indicators to refuse to turn off. Wonder what to do? Is it a particular problem of Citroen?
Jane Silbert, April 2007