The 2007 Hyundai Sonata has a pair of adjustment screws on each headlight assembly. These adjustment screws change the lateral and vertical direction of the Sonata's headlight. Although these adjustment screws can be turned with a screwdriver, you can also use your fingers, since the screws offer a gear-like grip. The most difficult part of adjusting the headlights on a 2007 Sonata is setting up the correct measurements to properly aim them so they work to illuminate the road.
Park your 2007 Sonata directly in front of a vertical flat surface, such as a garage door or wall.
Put vertical and horizontal strips of masking tape on the wall directly in front of each of the Sonata's headlights.
Measure 25 feet out from the wall and place a strip of tape at that point. Reverse your Sonata until your headlights line up above the tape.
Turn on your headlights and prop open the hood.
Look behind each headlight assembly for the two adjustment screws. Twist these with your fingers or a screwdriver to adjust the vertical and lateral aim of the headlights. Aim both headlights so they are about two inches below their corresponding horizontal strips of tape and two inches inward from their corresponding vertical strips.
