Ford 2011 Flex Owner's Manual page 248

Tires, Wheels and Loading
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.
Servicing after towing
If you tow a trailer for long distances, your vehicle will require more
frequent service intervals. Refer to Special operating conditions in the
Scheduled Maintenance Guide chapter.
Trailer towing tips
• Practice turning, stopping and backing-up before starting on a trip to
get the feel of the vehicle-trailer combination. When turning, make
wider turns so the trailer wheels will clear curbs and other obstacles.
• Allow more distance for stopping with a trailer attached.
• If you are driving down a long or steep hill, shift into the lowest gear
position. Do not apply the brakes continuously, as they may overheat
and become less effective.
• The trailer tongue weight should be 10–15% of the loaded trailer
weight.
• After you have traveled 50 miles (80 km), thoroughly check your
hitch, electrical connections and trailer wheel lug nuts.
• To aid in engine/transmission cooling and A/C efficiency during hot
weather while stopped in traffic, place the gearshift lever in P (Park).
• Vehicles with trailers should not be parked on a grade. If you must
park on a grade, place wheel chocks under the trailer's wheels.
248
2011 Flex (471)
Owners Guide, 1st Printing
USA (fus)