2008 Ford F250 Owner Guide 4th Printing - Page 229

Tires, Wheels and Loading TPMS reset procedure (if applicable) This procedure is only required after tire rotation on vehicles with different front and rear tire pressures. To determine if your vehicle requires two different pressures one for the front tires and one for the rear tires - refer to the Safety Compliance Certification Label or Tire Label which is located on the B-Pillar or the edge of the driver's door. See Vehicle Loading in this chapter for more information. Overview To provide the vehicle's load carrying capability, some trucks require different recommended tire pressures in the front tires as compared to the rear tires. The Tire Pressure Monitoring System (TPMS) equipped on these vehicles is designed to illuminate the Low Tire Pressure Warning indicator at two different pressures; one for the front tires and one for the rear tires. Since tires need to be rotated to provide consistent performance and maximum tire life, the Tire Pressure Monitoring System needs to know when the tires are rotated to determine which set of tires are on the front and which are on the rear. With this information, the system can detect and properly warn of low tire pressures. Always perform the TPMS reset procedure after tire rotation. If the system is not reset, it may not provide a low tire pressure warning when necessary. 229 2008 F-250/350/450/550 (f23) Owners Guide (post-2002-fmt) USA (fus)