•Do not make full-throttle starts.
•Check your hitch, electrical connections and trailer wheel lug nuts
thoroughly after you have traveled 50 miles (80 kilometers).
•When stopped in congested or heavy traffic during hot weather, place
the gearshift in positionPto aid engine and transmission cooling and
to help A/C performance.
•Turn off the speed control with heavy loads or in hilly terrain. The
speed control may turn off automatically when you are towing on
long, steep grades.
•Shift to a lower gear when driving down a long or steep hill. Do not
apply the brakes continuously, as they may overheat and become less
effective.
•If your transmission is equipped with a Grade Assist or Tow/Haul
feature, use this feature when towing. This provides engine braking
and helps eliminate excessive transmission shifting for optimum fuel
economy and transmission cooling.
•Allow more distance for stopping with a trailer attached. Anticipate
stops and brake gradually.
•Avoid parking on a grade. However, if you must park on a grade:
1. Turn the steering wheel to point your vehicle tires away from
traffic flow.
2. Set your vehicle parking brake.
3. Place the automatic transmission in positionP.
4. Place wheel chocks in front and back of the trailer wheels.
(Chocks not included with vehicle.)
Launching or Retrieving a Boat or Personal Watercraft (PWC)
Note:Disconnect the wiring to the trailerbeforebacking the trailer into
the water.
Note:Reconnect the wiring to the trailerafterremoving the trailer from
the water.
When backing down a ramp during boat launching or retrieval:
•Do not allow the static water level to rise above the bottom edge of
the rear bumper.
•Do not allow waves to break higher than 6 inches (15 centimeters)
above the bottom edge of the rear bumper.
Exceeding these limits may allow water to enter vehicle components:
•Causing internal damage to the components.
•Affecting driveability, emissions, and reliability.
Replace the rear axle lubricant anytime the rear axle submerges in
water. Water may have contaminated the rear axle lubricant, which does
not normally require checking or changing unless it is leaking or other
axle repair is required.
Towing257
2014 Flex(471)
Owners Guide gf, 1st Printing, April 2013
USA(fus)
Should your vehicle shut off after a collision, you may restart your
vehicle by doing the following:
1. Turn the ignition off and wait approximately 10 seconds.
2. Turn the ignition on.
3. Repeat steps 1 and 2 to re-enable the fuel pump.
JUMP-STARTING THE VEHICLE
WARNING:The gases around the battery can explode if exposed
to flames, sparks, or lit cigarettes. An explosion could result in
injury or vehicle damage.
WARNING:Batteries contain sulfuric acid which can burn skin,
eyes and clothing, if contacted.
Do not attempt to push-start your automatic transmission vehicle.
Automatic transmissions do not have push-start capability. Attempting to
push-start a vehicle with an automatic transmission may cause
transmission damage.
When the battery is disconnected or a new battery is installed, the
automatic transmission must relearn its shift strategy. As a result, the
transmission may exhibit a combination of firm and soft shifts. This
operation is considered normal and will not affect function or durability
of the transmission. Over time, the adaptive learning process will fully
update transmission operation.
Preparing Your Vehicle
Note:Use only a 12–volt supply to start your vehicle.
Note:Do not disconnect the battery of the disabled vehicle as this could
damage the vehicle’s electrical system.
1. Park the booster vehicle close to the hood of the disabled vehicle
making sure the two vehicles do not touch. Set the parking brake on
both vehicles and stay clear of the engine cooling fan and other moving
parts.
2. Check all battery terminals. Remove the positive terminal cover (if
equipped) and any excessive corrosion before you attach the battery
cables. Ensure that vent caps are tight and level.
3. Turn the heater fan on in both vehicles to protect from any electrical
surges. Turn all other accessories off.
Roadside Emergencies267
2014 Flex(471)
Owners Guide gf, 1st Printing, April 2013
USA(fus)
Fuse or relay
numberFuse amp
ratingProtected components
4 30A** Wipers, Washer pump
5 50A** Anti-lock brake system pump
6 — Not used
7 30A** Power liftgate
8 20A** Moonroof
9 20A** 2nd row console power point
10 — 3rd row power seats relay
11 — Heated rear window relay
12 — Trailer tow battery charge relay
13 — Starter relay
14 — Cooling fan #2 relay
15 — Fuel relay
16 — Not used
17 30A** 110V AC power point
18 40A** Front blower motor
19 30A** Starter motor
20 20A** Inside bin power point
21 20A** Instrument panel power point /
cigar lighter
22 30A** 3rd row seat module
23 30A** Driver power seat, Memory
module
24 30A** Trailer tow battery charge
25 — Not used
26 40A** Rear window defroster, Heated
mirrors
27 20A** Cargo power point
28 30A** Front heated/cooled seats
29 20A** Front heated seats
30 20A** Rear heated seats
31 25A** Electronic fan relay 3
280Fuses
2014 Flex(471)
Owners Guide gf, 1st Printing, April 2013
USA(fus)
Fuse or relay
numberFuse amp
ratingProtected components
32 — Auxiliary blower relay
33 — Cooling fan #1 relay
34 — Front blower relay
35 — Cooling fan (series) relay
36 — Not used
37 — Trailer tow right-hand stop/turn
lamps relay
38 — Trailer tow reverse lamps relay
39 30A** Auxiliary blower motor
40 — Not used
41 — Not used
42 30A** Passenger power seat
43 20A** Anti-lock brake system valves
44 — Windshield washer relay
45 5A* Rain sensor
46 5A* Canister vent solenoid (EcoBoost
engines)
47 15A* Washer pump
48 10A* Front park lamps
49 — Not used
50 10A* Heated mirrors
51 5A* Powertrain control module —
Injector power monitor
(non-EcoBoost engines)
52 — Not used
53 — Trailer tow left-hand stop/turn
lamps relay
54 — Not used
55 — Wipers relay
56 30A* Fuel injectors, Fuel pump relay
57 20A* Left high-intensity discharge
headlamps
Fuses281
2014 Flex(471)
Owners Guide gf, 1st Printing, April 2013
USA(fus)
Adding Engine Coolant
WARNING:Do not add engine coolant when the engine is hot.
Steam and scalding liquids released from a hot cooling system
can burn you badly. Also, you can be burned if you spill coolant on hot
engine parts.
WARNING:Do not put engine coolant in the windshield washer
fluid container. If sprayed on the windshield, engine coolant
could make it difficult to see through the windshield.
WARNING:To reduce the risk of personal injury, make sure the
engine is cool before unscrewing the coolant pressure relief cap.
The cooling system is under pressure; steam and hot liquid can come
out forcefully when the cap is loosened slightly.
WARNING:Do not add coolant further than the MAX mark.
Note:Do not use stop leak pellets, cooling system sealants or additives,
as they can cause damage to the engine cooling and/or heating systems.
This damage would not be covered under your vehicle’s warranty.
Note:During normal vehicle operation, the engine coolant may change
color from orange to pink or light red. As long as the engine coolant is
clear and uncontaminated, this color change does not indicate the engine
coolant has degraded nor does it require the engine coolant to be
drained, the system to be flushed, or the engine coolant to be replaced.
•DO NOT MIX different colors or types of coolant in your vehicle. Make
sure the correct coolant is used. Mixing of engine coolants may harm
your engine’s cooling system. The use of an improper coolant may
harm engine and cooling system components and may void the
warranty.
•In case of emergency, a large amount of water without engine coolant
may be added in order to reach a vehicle service location. In this
instance, the cooling system must be drained, chemically cleaned with
Motorcraft Premium Cooling System Flush, and refilled with engine
coolant as soon as possible. Water alone (without engine coolant) can
cause engine damage from corrosion, overheating or freezing.
Maintenance293
2014 Flex(471)
Owners Guide gf, 1st Printing, April 2013
USA(fus)
Vehicles driven year-round in non-extreme climates should use
prediluted engine coolant for optimum cooling system and engine
protection.
Engine fluid temperature management (EcoBoost engine only)
WARNING:To reduce the risk of collision and injury, be
prepared that the vehicle speed may reduce and the vehicle may
not be able to accelerate with full power until the fluid temperatures
reduce.
Your vehicle has been designed to pull a trailer, but because of the added
load, the vehicle’s engine may temporarily reach higher temperatures
during severe operating conditions such as ascending a long or steep
grade while pulling a trailer in hot ambient temperatures.
At this time, you may notice your engine coolant temperature gauge
needle move toward the H (hot) and the POWER REDUCED TO LOWER
TEMP message may appear on the message center.
You may notice a reduction in the vehicle’s speed caused by reduced
engine power. Your vehicle has been designed to enter this mode if
certain high temperature/high load conditions take place in order to
manage the engine’s fluid temperatures. The amount of speed reduction
will depend on the vehicle loading, towing, grade, ambient temperature,
and other factors. If this occurs, there is no need to pull off the road.
The vehicle can continue to be driven while this message is active.
The air conditioning may also cycle on and off during severe operating
conditions to protect overheating of the engine. When the engine coolant
temperature decreases to a more normal operating temperature, the air
conditioning will turn on once again.
If you notice any of the following:
•the engine coolant temperature gauge moves fully into the red (hot)
area
•the coolant temperature warning light illuminates
•the service engine soon indicator illuminates
1. Pull off the road as soon as safely possible and place the vehicle in P
(Park).
2. Leave the engine running until the coolant temperature gauge needle
moves away from the H range. After several minutes, if this does not
happen, follow the remaining steps.
Maintenance295
2014 Flex(471)
Owners Guide gf, 1st Printing, April 2013
USA(fus)
3. Turn the engine off and wait for it to cool before checking the coolant
level.
WARNING:Never remove the coolant reservoir cap while the
engine is running or hot.
4. If the coolant level is normal, you may restart your engine and
continue on.
5. If the coolant is low, add coolant, restart the engine and take your
vehicle to an authorized dealer. SeeAdding engine coolantin this
chapter for more information.
Refer to fail-safe cooling for additional information.
What You Should Know About Fail-Safe Cooling
If the engine coolant supply is depleted, this feature allows the vehicle to
be driven temporarily before incremental component damage is incurred.
The fail-safe distance depends on ambient temperatures, vehicle load and
terrain.
How Fail-Safe Cooling Works
If the engine begins to overheat, the engine coolant temperature gauge
will move to the red (hot) area and:
The coolant temperature warning light will illuminate.
The service engine soon indicator will illuminate.
If the engine reaches a preset over-temperature condition, the engine
will automatically switch to alternating cylinder operation. Each disabled
cylinder acts as an air pump and cools the engine.
When this occurs the vehicle will still operate. However:
•The engine power will be limited.
•The air conditioning system will be disabled.
Continued operation will increase the engine temperature and the engine
will completely shut down, causing steering and braking effort to
increase.
Once the engine temperature cools, the engine can be restarted. Take
your vehicle to an authorized dealer as soon as possible to minimize
engine damage.
296Maintenance
2014 Flex(471)
Owners Guide gf, 1st Printing, April 2013
USA(fus)
TRANSMISSION FLUID CHECK
6F50/6F55 Transmission
WARNING:The dipstick cap and surrounding components may
be hot; gloves are recommended.
WARNING:Use gloves when moving the air filter assembly;
components will be hot.
Note:
Automatic transmission fluid expands when warmed. To obtain an
accurate fluid check, drive the vehicle until it is warmed up (approximately
20 miles [30 km]). If your vehicle has been operated for an extended
period at high speeds, in city traffic during hot weather or pulling a trailer,
the vehicle should be turned off until normal operating temperatures are
reached to allow the fluid to cool before checking. Depending on vehicle
use, cooling times could take up to 30 minutes or longer.
Refer to yourscheduled maintenance informationfor scheduled
intervals for fluid checks and changes. Your transmission does not
consume fluid. However, the fluid level should be checked if the
transmission is not working properly, i.e., if the transmission slips or
shifts slowly or if you notice some sign of fluid leakage.
1. Drive the vehicle 20 miles (30 km) or until it reaches normal operating
temperature.
2. Park the vehicle on a level surface and engage the parking brake.
3. With the parking brake engaged and your foot on the brake pedal,
start the engine and move the gearshift lever through all of the gear
ranges. Allow a minimum of 10 seconds for each gear to engage.
4. Latch the gearshift lever inP(Park) and leave the engine running.
5. Remove the dipstick, wiping it clean with a clean, dry lintfree rag. If
necessary, refer toUnder hood overviewin this chapter for the location
of the dipstick. (For vehicles with the EcoBoost engine, move the air
filter assembly aside to access the transmission dipstick. SeeMoving the
Air Filter Assembly (EcoBoost engine)for more information.
6. Install the dipstick making sure it is fully seated in the filler tube by
turning it to the locked position.
7. Remove the dipstick and inspect the fluid level. The fluid should be in
the designated areas for normal operating temperature.
298Maintenance
2014 Flex(471)
Owners Guide gf, 1st Printing, April 2013
USA(fus)