2015 Buick LaCrosse Owner Manual - Page 171

6-4 Lighting Hazard Warning Flashers Turn and Lane-Change Signals The turn and lane-change signal can be turned off manually by moving the lever back to its original position. If after signaling a turn or lane change the arrow flashes rapidly or does not come on, a signal bulb might be burned out. Have any burned out bulbs replaced. If the bulb is not burned out, check the fuse. See Fuses and Circuit Breakers on page 10-35. Move the lever all the way up or down to signal a turn. Fog Lamps | (Hazard Warning Flashers): Press this button on the center stack above the audio system, to make the front and rear turn signal lamps flash on and off. Press again to turn the flashers off. The hazard warning flashers turn on automatically if the airbags deploy. An arrow on the instrument cluster flashes in the direction of the turn or lane change. Raise or lower the lever until the arrow starts to flash to signal a lane change. Hold it there until the lane change is completed. If the lever is briefly pressed and released, the turn signal flashes three times. If equipped with fog lamps, the button is on the exterior lamp control, left of the steering wheel.