Manual Headlamp Leveling

WARNING: This page is about a different car, the 2017 Jeep Cherokee. However, it is still accessible from the selected car via links, so may be relevant.

In certain markets where required, a headlamp leveling system is provided on the vehicle. The headlamp leveling system includes unique front headlamp units each connected to a headlamp leveling actuator motor, and a roller-actuated headlamp leveling switch integral to the headlamp switch pod on the instrument panel. The headlamp leveling system allows the headlamp 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 push-rod to the adjustable headlamp mounting collar.

Each time the headlamp leveling switch is depressed the circuitry of the switch pod provides an electronic select status up or select status down message input to the BCM over the a data bus. The BCM provides a voltage output to the headlamp leveling motors through high side drivers on the headlamp leveling motor right and left signal circuits to move the headlamp reflectors to the selected position based upon the voltage input received from the BCM. The BCM also sends the appropriate electronic messages back to the switch to control the illumination of the 1 , 2 , or 3 LED selected position indicator in the leveling switch button. BCM logic will only allow the headlamp leveling system to operate while the ignition is in the ON position and the exterior lighting is turned ON.