When to CheckCheck your tires once a month or more.Also, check the tire pressure of the compact spare tire.It should be at 60 psi (420 kPa).How to CheckUse a good quality pocket-type gage to check tirepressure. You can’t tell if your tires are properly inflatedsimply by looking at them. Radial tires may lookproperly inflated even when they’re underinflated.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 is low,add air until you reach the recommended pressureon the Certification/Tire label or the Tire and LoadingInformation label.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 and moisture.Tire Pressure Monitor SystemThe Tire Pressure Monitor (TPM) system on yourvehicle, uses radio and sensor technology to check tirepressure levels. Sensors, mounted on each tire andwheel assembly transmit tire pressure readings toa 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, on the instrument panel cluster. Foradditional information and details about the DIC operationand displays seeSystem Controls on page 3-52 andDICWarnings and Messages on page 3-65.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.5-69