2004 Mercedes ML-Class Owner's Manual - Page 272

Practical hints Replacing bulbs Insert reflector from the left so that it engages on the right. Position tabs of cover in slots and reinstall cover until properly seated. Adjusting headlamp aim Correct headlamp adjustment is extremely important. To check and readjust a headlamp, follow the steps described: Park the vehicle on a level surface 25 feet (7.6 m) from a vertical test screen or wall. Switch the headlamps on ( page 110). If the beam does not show a beam pattern as indicated in the figure left, then follow the steps below: Open hood ( page 217). Always turn adjustment screws 2 and 3 simultaneously for vertical adjustment until the headlamp is adjusted as shown 1. Turn clockwise for upward movement and counterclockwise for downward movement. Graduations: screw 2: 0.50° pitch screw 3: 0.67° pitch The left and right headlamps must be adjusted individually. i If it is not possible to obtain a proper headlamp adjustment, have the system checked at your authorized Mercedes-Benz Light Truck Center. V Vertical centerline H Headlamp mounting high, measured from the center i High beam adjustments simultaneously aim the low beam. Vehicle should have a normal trunk load. 2 Headlamp vertical adjustment screw 3 Headlamp vertical adjustment screw 272