2009 Ford Flex Owner's Manual - Page 253
2009 Ford Flex Manual
Page 253 highlights
Tires, Wheels and Loading Preparing to tow Use the proper equipment for towing a trailer and make sure it is properly attached to your vehicle. Contact your authorized dealer or a reliable trailer dealer as soon as possible if you require assistance. Hitches Do not use hitches that clamp onto the vehicle bumper. Use a load carrying hitch. You must distribute the load in your trailer so that 10-15% of the total weight of the trailer is on the tongue. Weight distributing hitch When hooking up a trailer using a load equalizing hitch, always use the following procedure: 1. Park the unloaded vehicle on a level surface. With the ignition on and all doors closed, allow the vehicle to stand for several minutes so that it can level. 2. Measure the height of a reference point on the front and rear bumpers at the center of the vehicle. 3. Attach the trailer to the vehicle and adjust the hitch equalizers so that the front bumper height is within 1⁄2" (13 mm) of the reference point. After proper adjustment, the rear bumper should be no higher than in Step 2. WARNING: Do not adjust a weight distributing hitch to any position where the rear bumper of the vehicle is higher than it was before attaching the trailer. Doing so will defeat the function of the weight distributing hitch, which may cause unpredictable handling, and could result in serious personal injury. 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. 253 2009 Flex (471) Owners Guide, 2nd Printing USA (fus)