Some models are equipped with a headlight leveling system, and this adjustment procedure will not apply to those models; have the headlights adjusted by a dealer service department or other qualified repair shop. There are several methods of adjusting the headlights, with the simplest requiring an open area with a blank wall and a level floor. Begin by positioning masking tape vertically on the wall in line with the vehicle centerline and the centerlines of both headlights, followed by a horizontal tape line in line with the centerline of all the headlights; it may be easier to position the tape with the vehicle parked only a few inches away. Adjustments should be made with the vehicle parked 25 feet from the wall, sitting level, with the gas tank half-full and no unusually heavy load, using low beam settings. The high intensity zone should be positioned two inches below the horizontal line and two inches to the side of the vertical headlight line, away from oncoming traffic, by turning the adjustment screws until the desired position is achieved; for up-and-down adjustments, remove the plug with a thin screwdriver, then turn the screw with a Phillips screwdriver, and reinstall the plug after adjustment, while side-to-side adjustments are made by turning the screw at the rear of the headlight housing. With the high beams on, the high intensity zone should be vertically centered with the exact center just below the horizontal line.