A problem with the sliding door track and door stops can allow the door to slide out of the track and fall off the vehicle. This is more common when doors are opened fast and allowed to hit the stops with a lot of force.
Car Problem Reports
Chrysler Town & Country Silding Door May Fall Off Track
Chrysler Town & Country Problem
Visitor, 2005 Chrysler Town & Country, 106,000 mi
Door off track on bottom. No solution yet. all electonics work and door electronically locks fine. Just bottom wheels off track. Solution anyone?
Visitor, 2008 Chrysler Town & Country
It fell off our rental when we stopped for gas. We got a replacement rental (same model) and the door threatened to come off, at a gas station again. We believe that they fall of when the fuel access is open and you try to open the door manually (btw, I used very little force both times).
Both sliding doors are inop I have to open manualy due to the right door link broke. It has created a major problem in the electrical syste.