Headlamp Functionality - High Intensity Discharge (HID)

Vehicles equipped with High Intensity Discharge (HID) headlamps utilize a second (hot at all times) voltage feed to the HID  ballasts. The ballasts are located on the underside of each headlamp assembly.

When the low beams are requested (based on inputs to the SJB  ), the HID  ballasts energize and provide high voltage to the HID  bulbs.

When the high beams are requested, the HID  ballasts remain powered and a shutter within each headlamp is activated. This changes the headlamp beam pattern to illuminate a greater distance.

The flash-to-pass feature is unique for HID  equipped vehicles. If the low beams are off when the flash-to-pass is requested, the HID  ballasts and the shutters within the headlamps are activated for approximately 0.5 seconds. If the low beams are on when the flash-to-pass is requested, the shutters within the headlamps are activated for as long as the multifunction switch is held in the FLASHTO-PASS position.