I cannot seem to learn just where the nose of the MS is by sighting over the frunk; try as I might, I always stop short of the intended spot or a bit too close. Low obstructions are not detected by the front sensor. However, I found a solution. Do this: - Sitting in your normal driving posture, sight down to the ground at the acute angle formed by the left mirror bracket and the window sill. - This will identify a spot on the ground. Remember the spot (or perhaps with the help of an assistant, wife mark the spot). - Exit the car and estimate the distance of the spot with respect to the nose. It may be a few inches back of or in front of the nose. - Remember this distance and use it to estimate the position of the nose next time you park.