2005 Buick Rendezvous Owner's Manual - Page 383

If the anti-lock brake system warning light comes on, the check tire pressure system may not be working properly. See your dealer for service. Also, see Anti-Lock Brake System Warning Light on page 3-45. The check tire pressure system detects differences in tire rotation speeds that are caused by changes in tire pressure. The system can alert you about a low tire - but it does not replace normal tire maintenance. See Tires on page 5-55. When the LOW TIRE PRESSURE HOLD SET TO RESET message appears on the Driver Information Center and the LOW TIRE PRESSURE message comes on the message center, 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 5-61. Any time you adjust a tire's pressure or have one or more tires repaired or replaced, you'll need to reset, or calibrate, the check tire pressure system. You'll also need to reset the system whenever you rotate the tires, buy new tires and install or remove the compact spare. 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. 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 the system, do the following: 1. With the engine off, turn the ignition to ON. 2. Press the MODE button until the DIC reads LOW TIRE PRESSURE HOLD SET TO RESET. 3. Press and hold the SET button until you hear a chime, and TIRE PRESSURE RESET is displayed. You will hear three chimes, then the LOW TIRE PRESSURE message will go off and the DIC will return to TIRE PRESSURE NORMAL. If the LOW TIRE PRESSURE message comes back on, the check tire pressure system has not reset. Repeat the procedure. 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 30 and 60 minutes of driving to learn the tire pressures. The system normally takes 10 to 20 minutes of driving in each speed range to learn tire pressures. The speed ranges are 20 to 40 mph (32 to 64 km/h), 40 to 60 mph (64 to 96 km/h), and above 60 mph (96 km/h). This time may be longer depending on your individual driving habits. The learning process does not need to be completed during a single trip. Once learned, the system will remember the tire pressure until the system is reset. 5-63