Remove the valve cap from the tire valve stem. Pressthe tire gage firmly onto the valve to get a pressuremeasurement. If the cold tire inflation pressure matchesthe recommended pressure on the Tire and LoadingInformation label, no further adjustment is necessary.If the inflation pressure is low, add air until you reach therecommended amount.If you overfill the tire, release air by pushing on themetal stem in the center of the tire valve. Recheck thetire pressure with the tire gage.Be sure to put the valve caps back on the valve stems.They help prevent leaks by keeping out dirt andmoisture.Tire Pressure Monitor SystemThe Tire Pressure Monitor (TPM) system uses radioand sensor technology to check tire pressure levels.If your vehicle has this feature, sensors are mounted oneach tire and wheel assembly, except the spare tire.The TPM sensors transmit tire pressure readingsto a receiver located in the vehicle.When a low tire pressure condition is detected, the TPMsystem will display the CHECK TIRE PRESSUREwarning message on the Driver Information Center (DIC);and at the same time illuminate the low tire pressurewarning symbol. For additional information and detailsabout the DIC operation and displays, see DIC Operationand Displays on page 3-50 and DIC Warnings andMessages on page 3-53.When the tire pressuremonitoring system warninglight is lit, one or moreof your tires is significantlyunder-inflated.You should stop and check your tires as soon aspossible, and inflate them to the proper pressure asindicated on the vehicle’s tire information placard. Drivingon a significantly under-inflated tire causes the tire tooverheat and can lead to tire failure. Under-inflation alsoreduces fuel efficiency and tire tread life, and may affectthe vehicle’s handling and stopping ability. Each tire,including the spare, should be checked monthly whencold and set to the recommended inflation pressure asspecified in the vehicle placard and owner’s manual.5-68
