2015 Buick LaCrosse Owner Manual - Page 230

Driving and Operating 9-45 { Warning Leaving the vehicle without placing it in P (Park) can be dangerous. Do not leave the vehicle while it is being held at a stop by ACC. Always place the vehicle in P (Park) and turn off the ignition before leaving the vehicle. ACC Override If using the accelerator pedal while ACC is active, a DIC warning message will indicate that automatic braking will not occur. See Vehicle Messages on page 5-35. ACC will resume operation when the accelerator pedal is not being pressed. { Warning The ACC will not automatically apply the brakes if your foot is resting on the accelerator pedal. You could crash into a vehicle ahead of you. Curves in the Road { Warning On curves, ACC may respond to a vehicle in another lane, or may not have time to react to a vehicle in your lane. You could crash into a vehicle ahead of you, or lose control of your vehicle. Give extra attention in curves and be ready to use the brakes if necessary. Select an appropriate speed while driving in curves. ACC may operate differently in a sharp curve. It may reduce the vehicle speed if the curve is too sharp. { Warning On curves, ACC may not detect a vehicle ahead in your lane. You could be startled if the vehicle accelerates up to the set speed, especially when following a vehicle exiting or entering exit ramps. You could lose control of the vehicle or crash. Do not use ACC while driving on an entrance or exit ramp. Always be ready to use the brakes if necessary.