Headlamp Leveling

In vehicles manufactured for Mexico and Latin America a headlight leveling system is provided on the vehicle. The headlight leveling system includes unique upper front combination lamp units each with an integral headlight leveling actuator motor, and push button headlight leveling switches integral to the IPC in the instrument panel. The headlight leveling system allows the headlight low beams to be adjusted to one of four vertical positions to compensate for changes in inclination caused by the loading of the vehicle suspension. The leveling motors are mechanically connected through an integral pushrod to the adjustable headlight reflector.

Each time a headlight leveling switch push button is depressed the circuitry of the switch provides an up or down input to the IPC. The IPC then provides a voltage output to the electronic controller integral to each headlight leveling motor. The electronic controller of the headlight leveling motors move the headlight reflectors to the selected position based upon the voltage input received from the IPC. The headlight leveling motors send the appropriate information back to the IPC and the IPC displays the 0  , 1  , 2  or 3  to indicate the selected position in the IPC display. The system logic will only allow the headlight leveling system to operate while the ignition switch is in the ON position and the low beam headlights are turned ON.