2006 Lexus IS 350 User Guide - Page 130

2-3. Operating the lights and windshield wipers AFS (vehicles with discharge headlights) AFS (Adaptive Front Lighting System) improves visibility at intersections and on curves by automatically adjusting the level of the headlights according to vehicle speed and the degree of the tire angle that are controlled by steering input. Operates at speeds of 6 mph (10 km/h) or higher. n Deactivating AFS How to switch: →P. 214 The indicator turns on when the AFS is deactivated. n Daytime running light system 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. 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. n Automatic light off system The headlights and tail lights turn off 30 seconds after a door is opened or closed if the engine switch has been switched to ACC or turned OFF while the headlights are turned on. (The light turns off immediately if the button on the key is pressed after all doors are locked.) To turn the lights on again, switch to IG-ON mode, or turn the light switch OFF once and then back to the or position. 114