I also have the rear window wee problem. (this is also posted in another location on this site) After 3 trips to the dealer (first to diagnose the problem,,,,oh gee it does wee on the window, second to the TSB and valve install,,,,,still wees on window, and third back to dealer,,,,,oh gee it still wee and we don't know what to do now) it still wees.....but I found a solution (you see, I live in the desert....don't need no stinkin rear washer), a little soft plastic cap I found at my local ACE Hardware for about 50 cents (see photo). No more wee and if I do have to use it in the winter or somthin, I just pop it off. Now this solution won't work if your turbo craps out but hopefully the dealer can fix that.