I have a 2011 OB and I had the same problem. It was replaced about 2 months ago. Recently, same - intermittent problems are now occurring with the "new" replaced steering wheel controls.
My cruise still works, but volume buttons and up/down channel changing are the culprit. Can't control Bluetooth volume when I receive a phone call and the volume dial on the dash doesn't work at that time, either.
Unfortunately, the closest dealer now (I have since relocated) is about an hour away. I think the original repair took about 2 hours. Since it's intermittent - I don't know if it will be having the problem when I take it there. Figures.