My 2013 SEL liftgate works fine in all modes (key fob, dashboard, foot sensor and gate sill pushbutton) but after I spend a few seconds standing almost completely still under it when open, something tells it to close and it bangs me in the head. Well, not real hard but still it is annoying. Usually happens when I am just standing there doing something in the cargo area, not moving my feet at all. The dealer says there is no sensitivity adjustment for the kick motion sensors. Anyone else experiencing this? Any fixes besides wearing my helmet? Thanks!