2011 Buick Lucern Owner's Manual - Page 124

This position locks the ignition. It also locks the transmission and steering column. This is the only position in which the ignition key can be inserted or removed. Do not turn the engine off when the vehicle is moving. This will cause a loss of power assist in the brake and steering systems and disable the airbags. In an emergency: 1. Brake using a firm and steady pressure. Do not pump the brakes repeatedly. This may deplete power assist, requiring increased brake pedal force. 2. Shift the vehicle to N (Neutral). This can be done while the vehicle is moving. After shifting to N (Neutral), firmly apply the brakes and steer the vehicle to a safe location. 3. Come to a complete stop, shift to P (Park), and turn the ignition to LOCK/OFF. On vehicles with an automatic transmission, the shift lever must be in P (Park) to turn the ignition switch to the LOCK/OFF position. 4. Set the parking brake. See Parking Brake on page 3 ‑ 26 . The steering can bind with the wheels turned off center. If this happens, move the steering wheel from right to left while turning the key to ACC/ACCESSORY. If this doesn't work, then the vehicle needs service. B (ACC/ACCESSORY): This position lets the radio and windshield wipers operate while the engine is off. To use ACC/ACCESSORY, turn the key clockwise. C (ON/RUN): This position can be used to operate electrical accessories and to display some of the warning and indicator lights. The switch stays in this position when the engine is running. If you leave the key in the ACC/ACCESSORY or ON/RUN position with the engine off, the battery could be drained. You may not be able to start the vehicle if the battery is allowed to drain for an extended period of time. D (START): This position starts the engine. When the engine starts, release the key. The ignition switch returns to ON/RUN for driving. A warning tone will sound and the Driver Information Center (DIC) will display DRIVER DOOR OPEN when the driver door is opened if the ignition is in LOCK/OFF, ACC/ACCESSORY and the key is in the ignition. See DIC Warnings and Messages on page 4 ‑ 49 for more information. 3-20