2008 Mazda RX-8 Owner's Manual - Page 156

Driving Your Mazda Starting and Driving NOTE l l l Perform tire pressure adjustment when the tires are cold. Tire pressure will vary according to the tire temperature, therefore let the vehicle stand for 1 hour or only drive it 1.6 km (1 mile) or less before adjusting the tire pressures. When pressure is adjusted on hot tires to the cold inflation pressure, the TPMS warning light/beep may turn on after the tires cool and pressure drops below specification. Also, an illuminated TPMS warning light, resulting from the tire air pressure dropping due to cold ambient temperature, may go out if the ambient temperature rises. In this case, it will also be necessary to adjust the tire air pressures. If the TPMS warning light illuminates due to a drop in tire air pressure, make sure to check and adjust the tire air pressures. After adjusting the tire air pressures, it may require some time for the TPMS warning light to go out. If the TPMS warning light remains illuminated, drive the vehicle at a speed of at least 25 km/h (16 mph) for 10 minutes, and then verify that it goes out. Tires can loose a little air quite naturally over time and the TPMS cannot tell if the tires are getting too soft over time or you have a flat. However, when you find one low tire in a set of four - that is an indication of trouble; you should have someone drive the vehicle slowly forward so you can inspect any low tire for cuts and any metal sticking through tread or sidewall. Put a few drops of water in the valve stem to see if it bubbles indicating a bad valve. Leaks need to be addressed by more than simply refilling the trouble tire as leaks are dangerous - take it to an Authorized Mazda Dealer which has all the equipment to fix tires, TPMS systems and order the best replacement tire for your vehicle. If the warning light illuminates again even after the tire pressures are adjusted, there may be a tire puncture. Vehicles with Instant Mobility System (IMS) emergency flat tire repair kit If an emergency tire repair is needed, repair the punctured tire with the emergency flat tire repair kit (page 7-5). CAUTION Do not use non-genuine tire sealant. It may damage the tire pressure sensor. Vehicles with optional temporary spare tire If you have bought the optional temporary spare tire, replace the punctured tire with the temporary spare tire . Refer to the manufacturer's instructions. NOTE A tire pressure sensor is not installed to the temporary spare tire. The warning light will flash continuously while the temporary spare tire is being used. Warning light flashes When the warning light flashes, there may be a system malfunction. Consult an Authorized Mazda Dealer. qSystem Error Activation When the warning light flashes, there may be a system malfunction. Consult an Authorized Mazda Dealer. A system error activation may occur in the following cases: l When there is equipment or a device near the vehicle using the same radio frequency as that of the tire pressure sensors. 5-30