Sticky dash buttons

You might try a little window cleaner or even soapy water (maybe warm will help) and a brush. Squirt sparingly into the cracks between the buttons and use a toothbrush to try to get the gunk out. A small can of compressed air like they have to clean your computer keyboard can be blown in ther afterword to blow more stuff out and dry the area. Don't get it too wet, electrical circuits and water don't like eachother much.