2011 Lexus IS 350 Owners Manual - Page 159

2-3. Operating the lights and windshield wipers Turning on the high beam headlights With the headlights on, push the lever forward to turn on the high beams. Pull the lever back to the center position to turn the high beams off. Pull the lever toward you to turn on the high beams. Release to turn them off. You can flash the high beams with the headlights on or off. n Daytime running light system l Vehicles with halogen headlights: to make your vehicle more visible to other drivers, the headlights turn on automatically (at a reduced intensity) whenever the engine is started and the parking brake is released. Daytime running lights are not designed for use at night. Vehicles with discharge headlights: to make your vehicle more visible to other drivers, the parking lights turn on automatically (at a increased intensity) whenever the engine is started and the parking brake is released. Daytime running lights are not designed for use at night. l Compared to turning on the headlights, the daytime running light system offers greater durability and consumes less electricity, so it can help improve fuel economy. n Headlight control sensor The sensor may not function properly if an object is placed on the sensor, or anything that blocks the sensor is affixed to the windshield. Doing so interferes with the sensor detecting the level of ambient light and may cause the automatic headlight system to malfunction. 166