2004 Cadillac XLR Owner's Manual - Page 283

A low tire warning light also appears on the instrument panel cluster when a low tire condition exists. The DIC message, CHECK TIRE PRESSURE and the low tire pressure warning light will be shown each time the engine is started and stay on until the low tire condition is corrected. When the tire pressure monitoring system warning light is lit, one or more of your tires is significantly under-inflated. The Tire and Loading Information Label (tire information placard) is either on the rear edge of the driver's door or the driver's door jamb near the latch. This label shows the size of your vehicle's original tires and the correct inflation pressure for your vehicle's tires when they are cold. See Inflation - Tire Pressure on page 5-57. Your vehicle's TPM system can alert you about a low or high tire pressure condition but it does not replace normal tire maintenance. See Tire Inspection and Rotation on page 5-60 Each TPM sensor has a unique identification code that is matched to one of the four tire positions on your vehicle. The tire and wheel assembly positions are, left front (LF); right front (RF); right rear (RR) and left rear (LR). Any time you rotate your vehicle's tires or replace one or more TPM sensors, the identification codes will need to be matched to the new tire and wheel position. The TPM matching process is performed in a specific sequence and time limit. A special tool is also required. See your dealer for service. The SVC TIRE MONITOR message is displayed when the TPM system is malfunctioning. For example, one or more TPM sensors may be inoperable or missing. See your dealer for service. You should stop and check your tires as soon as possible, and inflate them to the proper pressure as indicated on the vehicle's tire information placard. Driving on a significantly under-inflated tire causes the tire to overheat and can lead to tire failure. Under-inflation also reduces fuel efficiency and tire tread life, and may affect the vehicle's handling and stopping ability. Each tire, including the spare, should be checked monthly when cold and set to the recommended inflation pressure as specified in the vehicle placard and owner's manual. 5-59