+1 on Freez-Out. That is great stuff and relatively cheap when it is on sale, which is often. I think it may be currently on sale - I saw a recent Cycle Gear circular and it was on sale.
Yeah, due to snowfall and ice on the roads here the past several weeks I haven't checked in with the dealer to see if they finally resolved the problem as I couldn't get it home anyway. From what others have said and all of the things my dealer has tried with no success I have to think that the instrument cluster replacement is the surest cure.