I think a car cleaning product leaked into the gap last week. I’ve slowly had problems appear. The up motion seems to be live, but the down is dead. Same with the passenger switch. This is on the drivers side main console.

 

Can these switches be changed individually?

Had an issue where water got into mine - Skoda replaced the whole unit and it only cost me £30 something or other (I'll try and check price when I get home).