2011 Mercedes GL-Class Owner's Manual - Page 126
2011 Mercedes GL-Class Manual
Page 126 highlights
124 X X Changing bulbs Insert the bulb holder and turn it clockwise. Close the side trim panel (Y page 123). To check and adapt the headlamp setting, proceed as follows: X Park the vehicle on level ground at a distance of 25 feet (7.6 m) from a wall or similar. X Make sure that the vehicle load is in the normal range. X Switch on the L low-beam headlamps. If the light of the headlamps is not distributed as shown in the illustration above, follow the instructions below: X Open the hood (Y page 294). License plate lamp Lights and windshield wipers X X Switch off the lights. Open the tailgate. X Remove screws :. X Remove the license plate lamp. X Replace the bulb. X Insert the license plate lamp. X Replace and tighten screws :. Setting the headlamps : V vertical axis ; H (horizontal) height, measured from the center Setting the headlamps correctly is extremely important. Setting the high-beam headlamps also sets the low-beam headlamps. (The term headlamps covers both high and low beam.) The adjustment screws are located under the cover. X Insert a suitable tool into the openings in the cover. The directions of arrow = and ? indicate the angle at which the tool needs to be inserted in order to reach the adjustment screws. X Turn both screws uniformly until the vertical setting corresponds to :. Turn the screws clockwise to adjust the headlamp upwards and counterclockwise to adjust it downwards. Gradation: RScrew at arrow =: 0.67˚ angle of inclination RScrew at arrow ?: 0.50˚ angle of inclination The left and right headlamp need to be adjusted individually. i If it is not possible to adjust the headlamps accurately, have the