2013 Buick LaCrosse Owner Manual - Page 157

Lighting When the DRL are on, the low-beam headlamps will be on. The taillamps, sidemarker lamps, instrument panel lights, and other lamps will not be on. The DRL turn off when the headlamps are turned to O or the ignition is off. This vehicle may have a DRL disabling function. When the DRL are on and a turn signal is activated, the DRL on that side will be off until the turn signal goes off. There is a light sensor located on top of the instrument panel. Do not cover the sensor; otherwise the headlamps will come on when they are not needed. The system may also turn on the headlamps when driving through a parking garage or tunnel. When it is bright enough outside, the headlamps will turn off or may change to Daytime Running Lamps (DRL). The automatic headlamp system turns off when the exterior lamp control is turned to O or the ignition is off. 6-3 Lights On with Wipers If the windshield wipers are activated in daylight with the engine on, and the exterior lamp control is in AUTO, the headlamps, parking lamps, and other exterior lamps come on. The transition time for the lamps coming on varies based on wiper speed. When the wipers are not operating, these lamps turn off. Move the exterior lamp control to P or ; to disable this feature. Automatic Headlamp System When the exterior lamp control is set to AUTO and it is dark enough outside, the headlamps come on automatically. Adaptive Forward Lighting (AFL) The Adaptive Forward Lighting System (AFL) pivots the headlamps horizontally to provide greater road illumination while turning. To enable AFL, set the exterior lamp switch to the AUTO position. Moving the switch out of the AUTO position deactivates the system. AFL operates when the vehicle speed is greater than 3 km/h (2 mph). AFL does not operate when the