So, if I don't touch the OK button immediately the touch screen doesn't work at all. Then even when it does work it does so intermittently. It'll work fine and respond to touch for a while, then all of the sudden it wont' respond to touch at all. Some times it works for over an hour, sometimes for 10 minutes. Another issue I've discovered is that the volume button changes the radio station back and forth. .. I think it's just changing the FM selection from FM1 to FM2 or something, but it does that every so often. I appear to have a single button on the steering wheel controls actually h