2006 Buick Lucerne Owner's Manual - Page 332

The system can alert you about a low tire - but it does not replace normal tire maintenance. See Tires on page 5-56. When the tire pressure warning light and the CHECK TIRE PRESSURE message comes on, you should stop as soon as you can and check all your tires for damage. If a tire is flat, see If a Tire Goes Flat on page 5-72. Also check the tire pressure in all four tires as soon as you can. See Inflation - Tire Pressure on page 5-62. Any time you adjust a tire's pressure or have one or more tires repaired or replaced, you will need to reset (calibrate) the check tire pressure system. You will also need to reset the system whenever you rotate the tires, buy new tires, and install or remove the compact spare tire. Do not reset the check tire pressure system without first correcting the cause of the problem and checking and adjusting the pressure in all four tires to the recommended amount. See Inflation - Tire Pressure on page 5-62. If you reset the system when the tire pressures are incorrect, the check tire pressure system will not work properly and may not alert you when a tire is low or high. To reset (calibrate) the system: 1. Turn the ignition switch to RUN, with the engine off. 2. Press the vehicle information button on the DIC until the PRESS V TO RESET TIRE SYSTEM message appears on the display. 3. Press and hold the DIC Set/Reset button for about five seconds. After five seconds, the display will show TIRE PRESSURE SYSTEM RESET. If the TIRE PRESSURE SYSTEM RESET message does not appear in the display after about five seconds, repeat the procedure starting with Step 2. If it does not work after two tries, see your dealer for service. The system completes the calibration process during driving. The system learns the pressure at each tire throughout the operating speed range of your vehicle. The system normally takes between 20 and 45 minutes of driving in each of the following speed ranges to learn tire pressures: 25 to 40 mph (40 to 64 km/h), 40 to 60 mph (64 to 96 km/h), and 60 to 85 mph (96 to 136 km/h). This time may be longer depending on your individual driving habits. Learning need not be accumulated during a single trip. Once learned, the system will remember the tire pressures until the system is reset. 5-64