These available Bi-Xenon™ High-Intensity Discharge (HID) headlamps are brighter than conventional halogen headlamps, use less energy and last significantly longer. In addition, an auto-leveling feature helps to ensure that the headlamps remain pointed at the proper angle. These available headlamps also include LED daytime running lights, which use less energy than conventional headlamps while adding a dramatic air. For additional safety, the IS comes with LED brake lights. Since they illuminate faster than standard bulbs, they can help the driver behind you see you better and help them respond in emergency situations faster.