There is a known concern with the steering wheel switches. Not a huge amount of them failing, but enough to get Mitsubishis attention. The current fix is replacement for the faulty parts, as no modified or improved parts have been announced as yet.
My volume down button on steering wheel feels like the spring is missing. Up works fine but when I press down the volume sometimes drops to 0 and I have to turn back up. Waiting till my next service to have them look at. Also the driver's side door panel is loose, they fixed once but it has loosened again.