I thought I'd update this, as I've learned from BMW that when the actuator fails, your door cannot be opened from the inside or the outside. I finally took it to the dealer. They gave me a disclaimer that -some of the time- the door panel will break when they remove it. I should point out that they can't actually fully remove the panel with the door shut. They get just enough of a gap at the top to access the actuator. The part itself was $200, but they charged me about 6 hours labor. As it turned out, the failure of the actuator was unrelated to me upgrading the speakers a few days prior to the failure. Anyway, glad I didn't have to paint the car orange and use it like The General Lee in the Dukes of Hazzard.