I had this when i left the drivers window open one day and it started raining. The fuses are in the glove box, I can remember the numbers but google them it should be an easy find.

Mine would light up but wouldnt work. All other windows were fine.

I replaced the whole unit as fuses did nothing. I bought a good condition one for a bout £45 off eBay, and replaced. Its been working perfectly ever since!