2007 Ford Expedition Owner Guide 3rd Printing - Page 249

Tires, Wheels and Loading 2. Turn the air suspension (if equipped) control to OFF. 3. Measure the height of a reference point on the front and rear bumpers at the center of the vehicle. 4. Attach the trailer to the vehicle and adjust the hitch equalizers so that the front bumper height is within a 1⁄2" (13 mm) of the reference point. After proper adjustment, the rear bumper should be no higher than in Step 3. 5. Turn the air suspension (if equipped) control to ON. Note: Adjusting a weight distributing hitch so the rear bumper of the vehicle is higher than it was unloaded will defeat the function of the weight distributing hitch and may cause unpredictable handling. Safety chains Always connect the trailer's safety chains to the frame or hook retainers of the vehicle hitch. To connect the trailer's safety chains, cross the chains under the trailer tongue and allow slack for turning corners. If you use a rental trailer, follow the instructions that the rental agency gives to you. Do not attach safety chains to the bumper. Trailer brakes Electric brakes and manual, automatic or surge-type trailer brakes are safe if installed properly and adjusted to the manufacturer's specifications. The trailer brakes must meet local and Federal regulations. Do not connect a trailer's hydraulic brake system directly to your vehicle's brake system. Your vehicle may not have enough braking power and your chances of having a collision greatly increase. The braking system of the tow vehicle is rated for operation at the GVWR not GCWR. Trailer lamps Trailer lamps are required on most towed vehicles. Make sure all running lights, brake lights, turn signals and hazard lights are working. See your authorized dealer or trailer rental agency for proper instructions and equipment for hooking up trailer lamps. 249 2007 Expedition (exd) Owners Guide (post-2002-fmt) USA (fus)