SNOW TIRES AND CABLES/CHAINS
WARNING:Snow tires must be the same size, load index, speed
rating as those originally provided by Ford. Use of any tire or
wheel not recommended by Ford can affect the safety and
performance of your vehicle, which could result in an increased risk of
loss of vehicle control, vehicle rollover, personal injury and death.
Additionally, the use of non-recommended tires and wheels could
cause steering, suspension, axle or transfer case/power transfer unit
failure.
The tires on your vehicle have all-weather treads to provide traction in
rain and snow. However, in some climates, you may need to use snow
tires and cables . If you need to use cables, it is recommended that steel
wheels (of the same size and specifications) be used, as cables may chip
aluminum wheels.
Note:The suspension insulation and bumpers will help prevent vehicle
damage. Do not remove these components from your vehicle when using
snow tires and chains.
Follow these guidelines when using snow tires and chains:
•If possible, avoid fully loading your vehicle.
•Use only SAE Class S cables or equivalent on the front axle for
P235/60R17, P235/60R18, and P235/55R19 equipped vehicles. SAE
Class S chains or other conventional link chains may cause damage to
the vehicles wheel house and/or body. Use of optional spike type
traction devices or equivalent is also acceptable.
•Do not install tire chains, cables, or optional traction devices on the
rear tires. This could cause damage to the vehicle’s wheel house or
body.
•Do not use tire chains, cables, or optional traction devices with
255/45R20 tires.
•Install cable chains securely, verifying that the cables do not touch any
wiring, brake lines or fuel lines.
•Do not exceed 30 mph (48 km/h) with tire cables on your vehicle.
•Drive cautiously. If you hear the cables rub or bang against your
vehicle, stop and retighten the cables. If this does not work, remove
the cables to prevent damage to your vehicle.
•Remove the tire cables when they are no longer needed. Do not use
tire cables on dry roads.
Tires, Wheels and Loading
236
2011 Flex(471)
Owners Guide, 1st Printing
USA(fus)
GCW (Gross Combined Weight)– is the weight of the loaded vehicle
(GVW) plus the weight of the fully loaded trailer.
GCWR (Gross Combined Weight Rating)– is the maximum allowable
weight of the vehicle and the loaded trailer – including all cargo and
passengers – that the vehicle can handle without risking damage.
(Important: The towing vehicles’ braking system is rated for operation at
GVWR, not at GCWR. Separate functional brakes should be used for safe
control of towed vehicles and for trailers where the GCW of the towing
vehicle plus the trailer exceed the GVWR of the towing vehicle.The
GCW must never exceed the GCWR.
Maximum Loaded Trailer Weight– is the highest possible weight of a
fully loaded trailer the vehicle can tow. It assumes a vehicle with only
mandatory options, no cargo (internal or external), a tongue load of
10–15% (conventional trailer), and driver only (150 lb. [68 kg]).Consult
your authorized dealer (or theRV and Trailer Towing Guide
provided by your authorized dealer) for more detailed
information.
WARNING:Do not exceed the GVWR or the GAWR specified on
the Safety Compliance Certification Label.
WARNING:Do not use replacement tires with lower load
carrying capacities than the original tires because they may
lower the vehicle’s GVWR and GAWR limitations. Replacement tires
with a higher limit than the original tires do not increase the GVWR
and GAWR limitations.
WARNING:Exceeding any vehicle weight rating limitation could
result in serious damage to the vehicle and/or personal injury.
Steps for determining the correct load limit:
1. Locate the statement “The combined weight of occupants and cargo
should never exceed XXX kg or XXX lbs.” on your vehicle’s placard.
Tires, Wheels and Loading
242
2011 Flex(471)
Owners Guide, 1st Printing
USA(fus)
1,400 - (2 x 220) - (9 x 100) = 1,400 - 440 - 900 = 60 lb. Now you
have the load capacity to transport the cement and your friend home.
In metric units, the calculation would be: 635 kg - (2 x 99 kg) - (9 x
45 kg) = 635 - 198 - 405 = 32 kg.
The above calculations also assume that the loads are positioned in your
vehicle in a manner that does not overload the Front or the Rear Gross
Axle Weight Rating specified for your vehicle on the Safety Compliance
Certification Label found on the edge of the driver’s door.
TRAILER TOWING
Trailer towing puts additional loads on your vehicle’s engine,
transmission, axle, brakes, tires and suspension. For your safety and to
maximize vehicle performance, be sure to use the proper equipment
while towing.
Follow these guidelines to ensure safe towing procedure:
•Do not tow a trailer until your vehicle has been driven at least
1,000 miles (1,600 km).
•Consult your local motor vehicle laws for towing a trailer.
•Refer to the instructions included with towing accessories for the
proper installation and adjustment specifications.
•Thoroughly prepare your vehicle for towing. Refer toPreparing to
towin this chapter.
•Stay within your vehicle’s load limits.
•Use extra caution when driving while trailer towing. Refer toDriving
while you towin this section.
•Service your vehicle more frequently if you tow a trailer. Refer to
Special operating conditionsin theScheduled Maintenance Guide
chapter.
For load specification terms found on the label, refer toVehicle loading
– with and without a trailerin this chapter. Remember to figure in the
tongue load of your loaded vehicle when figuring the total weight.
Tires, Wheels and Loading
244
2011 Flex(471)
Owners Guide, 1st Printing
USA(fus)
Weight-distributing hitch
When hooking-up a trailer using a weight-distributing hitch, always use
the following procedure:
1. Park the vehicle (without the trailer) on a level surface.
2. Measure the height of the top of the front wheel opening on the
fender, this is H1.
3. Attach the trailer to the vehicle without the weight distributing bars
connected.
4. Measure the height of the top of the front wheel opening on the
fender a second time, this is H2.
5. Install and adjust the tension in the weight distributing bars so that
the height of the front fender is approximately halfway between H1 and
H2.
6. Check that the trailer is level. If not level, adjust the ball height
accordingly and repeat Steps 3–6.
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.
Tires, Wheels and Loading
246
2011 Flex(471)
Owners Guide, 1st Printing
USA(fus)
WARNING: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 brake controller connector (if equipped)
The trailer brake controller
connector is located under the
instrument panel above the brake
pedal.
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.
Tires, Wheels and Loading
247
2011 Flex(471)
Owners Guide, 1st Printing
USA(fus)
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 toSpecial operating conditionsin the
Scheduled Maintenance Guidechapter.
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.
Tires, Wheels and Loading
248
2011 Flex(471)
Owners Guide, 1st Printing
USA(fus)
RECREATIONAL TOWING
Follow these guidelines for your specific powertrain combination to tow
your vehicle for personal travel (such as behind a motor home or a
truck).
Note:Put your climate control system in recirculated air mode to
prevent exhaust fumes from entering the vehicle. Refer to theClimate
Controlschapter for more information.
In case of roadside emergency with a disabled vehicle, please refer to
Wrecker towingin theRoadside Emergencieschapter.
These guidelines are designed to prevent damage to your vehicle.
Front-wheel drive (FWD) vehicles:
Tow your FWD vehicle with all four wheels on the ground or with the
front wheels off the ground by using a tow dolly. If you are using a tow
dolly follow the instructions specified by the equipment provider.
All-wheel drive (AWD) vehicles:
Tow your AWD vehicle with all four wheels on the ground or with all four
wheels off the ground using a vehicle transport trailer.Do not tow your
AWD vehicle with the front wheels off the ground (by using a tow
dolly) and the rear wheels on the ground; this will cause damage
to your AWD system.If you are using a vehicle transport trailer, follow
the instruction specified by the equipment provider.
Note:If you tow your vehicle with all four wheels on the ground, follow
these instructions:
•Tow only in the forward direction.
•Release the parking brake.
•Place the transmission shift lever in N (Neutral).
•Place the ignition in the accessory position (refer toStartingin the
Drivingchapter).
•Do not exceed 65 mph (105 km/h)
•Start the engine and allow it to run for five minutes at the beginning
of each day and at each fuel stop.
Tires, Wheels and Loading
249
2011 Flex(471)
Owners Guide, 1st Printing
USA(fus)
WARNING:Do not start your vehicle in a closed garage or in
other enclosed areas. Exhaust fumes can be toxic. Always open
the garage door before you start the engine. SeeGuarding against
exhaust fumesin this chapter for more instructions.
WARNING:If you smell exhaust fumes inside your vehicle, have
your dealer inspect your vehicle immediately. Do not drive if you
smell exhaust fumes.
Important safety precautions
A computer system controls the engine’s idle revolutions per minute
(RPM). When the engine starts, the idle RPM runs higher than normal in
order to warm the engine. If the engine idle speed does not slow down
automatically, have the vehicle checked.
Before starting the vehicle:
1. Make sure all vehicle occupants have buckled their safety belts. For
more information on safety belts and their proper usage, refer to the
Seating and Safety Restraintschapter.
2. Make sure vehicle accessories are off.
•Make sure the parking brake is
set.
Driving
251
2011 Flex(471)
Owners Guide, 1st Printing
USA(fus)