2001 Buick Regal Owner's Manual - Page 301

To reset (calibrate) the system: 1. Turn the ignition switch to RUN. 2. Then press and hold the RESET button for about five seconds. The red RESET button is located inside your instrument panel fuse block. The fuse block is located under the cover labeled FUSES, which is at the end of the instrument panel on the passenger's side of the vehicle. The RESET button is the first button in the top row of the fuse block. The LOW TIRE light will come on and flash three times. Then it will go off. If the light doesn't go off, see your dealer for service. The system completes the calibration process during driving. The system normally takes 15 to 20 minutes of driving in each of three speed ranges to "learn" tire pressures. The speed ranges are 15 to 40 mph (25 to 65 km/h), 40 to 65 mph (65 to 105 km/h) and above 65 mph (105 km/h). When learning is complete, the system will alert you after 2-8 minutes if a tire is 12 psi (83 kPa) different from the other three tires. Detection thresholds may be higher and detection times may be longer on rough roads, curves and at high speeds. The system is not capable of detection at speeds greater than 70 mph (110 km/h). Tire Inspection and Rotation Tires should be rotated every 6,000 to 8,000 miles (10 000 to 13 000 km). Any time you notice unusual wear, rotate your tires as soon as possible and check wheel alignment. Also check for damaged tires or wheels. See "When It's Time for New Tires" and "Wheel Replacement" later in this section for more information. The purpose of regular rotation is to achieve more uniform wear for all tires on the vehicle. The first rotation is the most important. See "Scheduled Maintenance Services" in the Index for scheduled rotation intervals. When rotating your tires, always use the correct rotation pattern shown here. 6-50