2009 Ford F450 Owner's Manual - Page 248

Tires, Wheels and Loading When you believe your system is not operating properly The main function of the Tire Pressure Monitoring System is to warn you when your tires need air. It can also warn you in the event the system is no longer capable of functioning as intended. Please refer to the following chart for information concerning your Tire Pressure Monitoring System: Low Tire Pressure Warning Light Solid Warning Light Possible cause Customer Action Required Tire(s) under-inflated Spare tire in use TPMS malfunction Tire rotation without sensor training 1. Check your tire pressure to ensure tires are properly inflated; refer to Inflating your tires in this chapter. 2. After inflating your tires to the manufacturer's recommended inflation pressure as shown on the Tire Label (located on the edge of driver's door or the B-Pillar), the vehicle must be driven for at least two minutes over 20 mph (32 km/h) before the light will turn OFF. Your temporary spare tire is in use. Repair the damaged road wheel/tire and reinstall it on the vehicle to restore system functionality. For a description on how the system functions, refer to When your temporary spare tire is installed in this section. If your tires are properly inflated and your spare tire is not in use and the light remains ON, have the system inspected by your authorized dealer. On vehicles with different front and rear tire pressures, the TPMS system must be retrained following every tire rotation. Refer to Tire rotation in this chapter. 248 2009 F-250/350/450/550 (f23) Owners Guide, 3rd Printing USA (fus)