Found a159 SW Ti!!
Join Date: Oct 2012
Location: United Kingdom
This may be a long shot, red herring but on my old passat, I had this problem all the time, and it was fixed by myself by doing this....
Get in the car, through another door, lol, and wind the window on the problem door, then get out go round to the door and at the same time 'work' both the inside handle and the outside one. What this did on the passat was to reroute the cable which had fallen off a pulley. Therefore not giving the full leverage.
It wouldn't always work first time, but give it a good few simultaneous pulls and also shutting the door hard helped.