My rear camera just recently developed this black spot on it but I can’t figure out where the camera lens is so I can clean it. I know someone here will know how to clean it, or at least where it’s located.
Looks to me that the spot is on your front-facing camera, which is located inside the lower half of the Nissan logo on the grille. Just a moist napkin or a bit of cotton and alcohol should clean it right out.