2008 Ford F250 Owner Guide 4th Printing - Page 87

Lights PANEL DIMMER CONTROL Use to adjust the brightness of the instrument panel and all applicable illuminated 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. Note: If the battery is disconnected, discharged, or a new battery is installed, the dimmer switch requires re-calibration. Rotate the dimmer switch from the full dim position to the full Dome/ON position to reset. This will ensure that your displays are visible under all lighting conditions AIMING THE HEADLAMPS Your vehicle may be equipped with a sealed beam or aerodynamic headlamp system. Sealed beam headlamps may be aimed in the vertical (up/down) and the horizontal (left/right) directions using the procedures following. The aerodynamic headlamps can only be aimed in the vertical direction (up/down) using the following procedures. The headlamps on your vehicle are properly aimed at the assembly plant and should not normally need adjusting. Vertical and horizontal aim adjustment (sealed beam headlamps) The headlamps on your vehicle are intended to be aimed using mechanical aimers. If mechanical aimers are used and the cross-car sight line is in any way blocked, set the legs of the universal adaptor all to the same setting, such that the cross-car sight line is no longer blocked, per the instructions for the brand of mechanical aimer used. You can also aim the headlamps visually using the procedure below. 87 2008 F-250/350/450/550 (f23) Owners Guide (post-2002-fmt) USA (fus)