hi mark, I had same problem with my 54 plate scenic on a rear door window working one minute then nothing off either switch,was told about the problem of when it rains etc the water gets inside the door and drains out through the drain at the bottom of door(bad design if you ask me) therefore the regulator motor gets damp and stops working. On advise I tried the easy option first took the window switch off the offending door, ( 2 minute job) if you look into the little hole where the switch unit came from you may need a torch cos its dark in there, you can just see the black motor on the regulator, get a tin of wd 40 with the straw in the nozzle and soak as much of it as possible and leave it overnight keep fingers crossed and try it next day, thats wot I did and low and behold it worked fine and has done ever since, just try it before you go thro the messing of taking door panels off, or any big expense cost me £2 for wd40 and literally 20 mins of my time. Good luck, Steve
