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To fix the sticking sliding door button: Get yourself a spray can of white lithium grease from the auto parts store. Spray generously into the crevice between the button and the door. You can gently pry the button out with a screw driver covered in duct tape (to prevent scratching), and work the button in and out. It took me 15 minutes to solve this problem. You may also want to squirt some penetrating oil in there and allow it to drip down into the door first. This will cut through the white lithium grease, so put this on first.