TLO03

hey guys parked the car tonight and noticed a red light towards the back of the cargo area was on .prety sure it's the button used to close the tail gate.. but why is it still on ? i had been lookin at the seam on the tail gate lately and noticed that it looked a bit larger i mean the gap where the door and body meet..is there a way to adjust the door.. the cargo floor mat has gotten in the way a few times..