Yeah, I thought I remembered closing and opening it manually. Convinces me one or both spindle drives are locked up. I know there's a motor, a preloaded spring, and obviously a jack screw inside the drives. Not sure what it runs on or how serviceable it might be.

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8/2011 X5 xDrive35d Sport, Black Sapphire Metallic, Black Nevada Leather, Fine Burr Walnut Trim
2/2001 M5, Jet Black, Exclusive Complete Black Walk Nappa Point Heritage Leather, Black Cubic Trim