The mk5 central locking works on the principle that, if the door is locked, you pull the handle once to unlock it then a second time to open the door.
You can either get people to double pull the handle to get out, or you can press the unlock button on the drivers door panel to unlock all doors
The padlock on the switch illuminates yellow when the doors are locked btw
Either way, if its one door or all doors unlocked, itll relock at 10mph