Ford Taurus Owner's Manual page 231

WARNING: Do not operate Adaptive Cruise Control (ACC)
when towing a trailer equipped with brakes. Aftermarket trailer
brakes will not function properly when ACC is activated, which may
lead to loss of vehicle control, increasing the risk of serious injury.
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. Do not
connect trailer lamps directly to your vehicle's tail lamps. This can cause
damage to your vehicle's electrical system. Contact your authorized
dealer or trailer rental agency for proper instructions and equipment for
hooking-up trailer lamps.
WARNING: Never connect any trailer lamp wiring to the
vehicle's tail lamp wiring; this may damage the electrical system
resulting in fire. Contact your authorized dealer as soon as possible for
assistance in proper trailer tow wiring installation. Additional electrical
equipment may be required.
Driving while you tow
When towing a trailer:
• Turn off the speed control. The speed control may shut off
automatically when you are towing on long, steep grades.
• It is recommended to select the L (Low) or M (Manual) gear position
when additional engine braking is needed. In situations such as
prolonged downhill driving on steep grades (i.e., driving in
mountainous areas), additional engine braking is needed to reduce the
load on the vehicle's regular brake system to prevent them from
overheating.
• Allow more distance for stopping with a trailer attached; anticipate
stops and brake gradually.
2012 Taurus
Owners Guide, 2nd Printing
USA (fus)
Tires, Wheels and Loading
231