When I press the sunroof tilt button the sunroof does nothing. To open the shade and sunroof I have to pull back the button and hold it until both are completely open. Same for when I want to close them...have to hold the button forward until everything is closed. I don't think anything is broken...i.e. motors are out...because the shade opens and the glass still slides. I've done the sunroof reset instructions a few times, and it doesn't do anything. Any suggestions?