2012 Ford F350 Super Duty Owner Guide 4th Printing - Page 260

Tires, Wheels and Loading • The TBC interacts with the brake system of the vehicle, including ABS, in order to reduce the likelihood of trailer wheel lock-up; therefore, if these systems are not functioning properly, the TBC may not function at full performance. • Your vehicle's brake system and the trailer brake system work independently of each other; changing the GAIN setting on the TBC does not affect the operation of your vehicle's brakes whether a trailer is attached or not. • When the vehicle is turned off, the TBC output is disabled and the display is shut down; turning the ignition from off to on awakens the TBC module. • The TBC is only a factory- or dealer-installed item; Ford is not responsible for warranty or performance of the TBC due to misuse or customer installation. • Do not attempt removal of the TBC without consulting the Workshop Manual; damage to the unit may result. Trailer Lamps Trailer lamps are required on most towed vehicles. Make sure all running lights, brake lights, turn signals and hazard lights are working. Contact your authorized dealer or trailer rental agency for proper instructions and equipment for hooking-up trailer lamps. Driving while you tow When towing a trailer: • Consult your local motor vehicle laws for towing a trailer. • Do not drive faster than 70 mph (113 km/h) during the first 500 miles (800 km) of trailer towing and don't make full-throttle starts. • Turn off the speed control. The speed control may shut off automatically when you are towing on long, steep grades. • Activate the tow/haul feature to eliminate excessive transmission shifting and assist in transmission cooling. For additional information, refer to Automatic transmission operation in the Driving chapter. • Allow more distance for stopping with a trailer attached; anticipate stops and brake gradually. 260 2012 F-250/350/450/550 (f23) Owners Guide, 4th Printing USA (fus)