2004 Ford Expedition Owner Guide 3rd Printing (Spanish) - Page 476

Lights PANEL DIMMER CONTROL Use to adjust the brightness of the instrument panel and all applicable switches in the vehicle during headlamp and parklamp operation. Move the control to the full upright position, past detent, to turn on the interior lamps. Move the control to the full down position, past detent, to prevent the interior lights from illuminating when the doors are opened. A VERTICAL AIM ADJUSTMENT 1. Park the vehicle on a level surface approximately 7.6 meters (25 feet) from a vertical wall or screen directly in front of it. • (1) Eight feet • (2) Center height of lamp to ground • (3) Twenty-five feet • (4) Horizontal reference line 2. Measure the height from the center of your headlamp (indicated by a 3.0 mm circle on the lens) to the ground and mark a 2.4 meter (8 foot) horizontal reference line on the vertical wall or screen at this height (a piece of masking tape works well). 3. Turn on the low beam headlamps to illuminate the wall or screen and open the hood. Cover one of the headlamps so no light hits the wall. 4. On the wall or screen you will observe a light pattern with a distinct horizontal edge towards the right. If this edge is not at the horizontal reference line, the beam will need to be adjusted so the edge is at the same height as the horizontal reference line. 92