It could be the close assist pump which draws the lid down ( by drawing the upper latch in) after getting a signal from the latch. This pump also controls the soft "door close" $$$. Try removing the fuse in the trunk (#9) I think, and allow a few seconds to reset. the pump failure is common on that car.
The latch on the bottom has a habit of coming loose, check that, the screws are under those plastic covers. The latch should be moved downward but only if loose.
You can rotate the lower latch to see if the striker in the upper lid retracts. The handle should also retract, search on "closing assist", I would not worry about the bumpers if it worked up till now. Make sure you push the trunk lid release button after manually rotating the latch.
The lock and unlock are handled by a different pump under the rear seat, The close assist is over the drivers side rear wheel next to the gas tank