I was standing beside the parked vehicle with the side door open, driver's side, inspecting the 2nd row swivel seat to see if it is removable. I was bent over the forward facing 2nd row seat when I lifted the release lever that tilts the seat back forward. The seat back flung forward with violent force, the headrest hitting on the right side of my face. It broke my nose, which bled profusely and had to be manually straightened by a nurse.