Bought a Lupo Sport for the wife a couple of weeks ago and the switch for the passenger window (from the drivers side) didn't operate in the down direction!. Obviously I promised to rectify this more than once Then one evening this week she came home from a trip to the shops complaining about the window switch for both windows, she had to get out of the car at a carpark barrier . Anyway's I sort of had to take a look! after removing the problem double switch and stripping it down it was sorted as follows. The switch itself is a single unit that can be inserted into any of the 3 locations i.e. single or double. The bottom of the switch has four small lugs, 2 on each side, if these are forced apart with a suitabley small screw driver the switch itself will come apart. Inside is a P.C.B with 4 small metal disc shaped contacts, I removed these 1 at a time and cleaned under the disc and the bottom of the disc itself, with lots of WD40 and a couple of cotton buds. When they were re-installed the windows all worked perfectly even the one touch operation in both directions on both windows...RESULT... and Yes the wife was well chuffed