Both of my doors do this all the time! No slant no inclineThe passenger sliding door is not always closing. It will pull fully forward, try try and pull in and latch and then reverse (repeatedly). Had it into the dealership and they were able to recreate the issue when the car was on a slight incline (I also sent them video). Both the repair shop and the body shop looked at it and they say that there is nothing wrong with the door and that is just going to happen sometimes "it is a known problem". As my driveway has a slight incline (only about 5 in over 4 feet front to back and 2 inches over 4 feet left to right), more often then not the door will not close without some amount of assistance. I have never had the problem with the drivers side sliding door. Anyone else having this problem? Any solutions before I start a lemon law complaint?