The car I bought has tacky film ("crud") on the button surfaces of the SID. They feel like someone was eating a PB&J sandwich and didn't wash the jelly off their fingertips.
And I discovered today while trying to change the date that the "SET" button sticks most of they down. I got the year changed to 2014 by turning the car off, but obviously that's not a practical way to make changes to the display.

1) Can the button faces be cleaned off ? With rubbing alc, e.g.
2) What to do abt the SET button ? Am I looking at replacing the entire SID ?