Buick LaCrosse: All-Wheel Drive - Drive Systems - Driving and Operating - Buick LaCrosse Owners ManualBuick LaCrosse: All-Wheel Drive

Vehicles with this feature always send engine power to all four wheels. It is fully automatic, and adjusts itself as needed for road conditions.

When using a compact spare tire on an AWD vehicle, the system automatically detects the compact spare and disables AWD. To restore AWD operation and prevent excessive wear on the system, replace the compact spare with a full-size tire as soon as possible.

See Compact Spare Tire for more information.

    Brakes
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    If a warning light turns on or a warning buzzer sounds...
    Calmly perform the following actions if any of the warning lights comes on or flashes. If a light comes on or flashes, but then goes off, this does not necessarily indicate a malfunction in the sy ...

    Unfastening the rear seatbelts seatbelt
    Push the button on the buckle. Before closing the door, make sure that the belts are retracted properly to avoid catching the belt webbing in the door. ...

    Important safety notes
    WARNING If the vehicle becomes trapped in snow, ensure that snow is kept away from the exhaust pipe and from around the vehicle as long as the engine is running. Otherwise, poisonous carb ...