2015 Buick LaCrosse Owner Manual - Page 51

2-20 Keys, Doors, and Windows Manual Rearview Mirror If equipped, push the tab forward for daytime use and pull it for nighttime use to avoid glare from the headlamps from behind. Windows { Warning Never leave a child, a helpless adult, or a pet alone in a vehicle, especially with the windows closed in warm or hot weather. They can be overcome by the extreme heat and suffer permanent injuries or even death from heat stroke. Automatic Dimming Rearview Mirror If equipped, automatic dimming reduces the glare of the headlamps from behind. This feature comes on when the vehicle is started. The vehicle aerodynamics are designed to improve fuel economy performance. This may result in a pulsing sound when either rear window is down and the front windows are up. To reduce the sound, open either a front window or the sunroof, if equipped. Power Windows { Warning Children could be seriously injured or killed if caught in the path of a closing window. Never leave keys in a vehicle with children. When there are children in the rear seat, use the window lockout button to prevent operation of the windows. See Keys on page 2-1.