Quickly press and release the switch to close the back door.
Pressing the switch while the back door is opening/closing stops the operation.
To operate the back door again, quickly press and release the switch. The back door will then move in the opposite direction. (If the back door is stopped at a position close to the fully closed position, the back door will only open when the switch is quickly pressed and released.)

Opening the back door from outside the vehicle
When closing the back doorSelecting trailer ball
Use the correct trailer ball for your application.
Trailer ball load rating
matches or exceeds the gross
trailer weight rating of the trailer.
Ball diameter
matches the size of the trailer coupler.
Most couplers are stamped
with the required trailer ball size.
Shank len ...