Owner's Manual
Page 161
...for cargo, not passengers. You can lock the liftgate latch by pushing down the night-lock button (located on the inside the cargo area. 159 Possible damage may occur to the liftgate door lift cylinders and attaching hardware if the liftgate door is closed to prevent exhaust fumes from outside air .... This will also prevent passengers and cargo from inside of the liftgate at the bottom of vehicles with the liftgate door open, keep the vents open and close the liftgate. You can also lock the liftgate latch by using the power door locks on the inner trim panel of the window...
...for cargo, not passengers. You can lock the liftgate latch by pushing down the night-lock button (located on the inside the cargo area. 159 Possible damage may occur to the liftgate door lift cylinders and attaching hardware if the liftgate door is closed to prevent exhaust fumes from outside air .... This will also prevent passengers and cargo from inside of the liftgate at the bottom of vehicles with the liftgate door open, keep the vents open and close the liftgate. You can also lock the liftgate latch by using the power door locks on the inner trim panel of the window...