My old car radio has developed sticky buttons. Only the up and down frequency tuning buttons. You push it in and it sticks in sometimes, and you have to poke at it, or get a fingernail in the edge and get it back out. Such a pain when changing stations (yes, I know about setting preferred stations and all that).
WD40 might just make it worse, right? Get some isopropyl alcohol in the cracks somehow, with q tip?
My guess is it is just grime, and oil from my fingers in there sticking the buttons down.
Any suggestions welcome (nope, not selling the car, ha ha).