Automatic Headlamp System

When the exterior lamp control is set to AUTO and it is dark enough outside, the headlamps come on automatically.

There is a light sensor located on

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 ignition or the ignition is off.

    See also:

    Engine Coolant
    The cooling system in the vehicle is filled with DEX-COOL® engine coolant mixture. See Recommended Fluids and Lubricants and Maintenance Schedule for more information. The following explains ...

    Window Lockout
    (Window Lockout): The rear window lockout button is located on the driver’s door armrest near the window switches. Press the right side of this button to disable the rear window controls. ...

    Cruising, Turning & Stopping
    Ride comfort is still king at Buick, and it's a formula GM shouldn't change. The LaCrosse leaves manhole covers and steel plates behind with the sort of measured wump that you'll notice but won't ...