
The powertrain and glow plug control
modules electronically control the glow
plug system. After you switch the ignition
on the glow plug control module
immediately energizes the glow plugs. The
glow plug control module using the engine
coolant temperature, barometric pressure
sensor and environmental temperature
sensor will determine how long the glow
plugs stay energized. The required time for
the glow plugs to be energized decreases
as the coolant temperature, barometric
pressure and environmental temperature
increase.
Glow Plug
Engine and secondary cooling system
The cooling system contains a primary
cooling loop to cool the engine and
exhaust gases and a secondary cooling
loop to cool the transmission, exhaust
gases, charge air, and fuel. The coolant
serves three primary purposes: to provide
heat transfer, freeze point protection, and
corrosion protection using additives.
Vehicles with diesel engines typically are
used to carry heavy loads and accumulate
mileage rapidly. These two factors may
cause the additives in the coolant to wear
out in a shorter time. For more information
about coolant additives and coolant
change intervals See General
Maintenance Information (page 58). .
Operating the engine with insufficient
coolant or coolant additive can cause
severe engine damage
Selective catalytic reduction system
Your vehicle is equipped with a selective
catalytic reduction system designed to
reduce emission levels of nitrogen oxides
from the exhaust of your diesel engine. This
system relies on the use of diesel exhaust
fluid that you must replenish at certain intervals. Failure to maintain proper diesel
exhaust fluid levels or if the diesel exhaust
fluid becomes contaminated will result in
vehicle speed limitations or result in your
vehicle entering an idle-only mode. See
Selective Catalytic Reduction System
(page
20).
Speed control
If your vehicle speed goes outside a
predetermined range from the set speed,
the RSM (Resume) function will not reset
your vehicle speed. You will need to reset
your vehicle speed with the SET+ or SET-
button after reaching the desired speed
using the accelerator pedal.
Minor Troubleshooting Guide
If the engine won ’t crank WARNING
Battery posts, terminals and related
accessories contain lead and lead
compounds. Wash hands after
handling. Turn on the headlights. If the lights are dim,
do not go on at all or when the ignition is
turned to START the lights become dim or
go out, the battery connections may be
loose or corroded, or the battery may be
discharged. If there is a clicking or
stuttering sound coming from the engine
compartment when you turn the key to
START, this may also indicate a loose or
corroded battery connection.
Check the battery connections at the
battery posts, cable connection to the
engine grounding point and at the starter
connection.
If you suspect a discharged battery, have
it checked and corrected.
5
Super Duty (TFA) Introduction

•
The gearshift lever must be in P (Park)
or N (Neutral) in order for the starter
to operate.
• Try operating the starter switch several
times. This operation may clean
potentially corroded contacts or make
the switch temporarily operable until
you can reach the dealer.
• If all electrical connections are tight
and you need assistance to start, refer
to Jump Starting in the Roadside
Emergencies chapter of your Owner ’s
Manual.
If engine cranks but won ’t start
Prolonged starter cranking (in excess of 10
seconds) could cause damage to the
starter motor or the high-pressure fuel
pump.
• Check the fuel gauge. You may be out
of fuel. If the gauge shows that there
is fuel in the tank, the trouble may be
in the electrical system or the fuel
system. If equipped with an auxiliary
tank, be sure that the tank control
switch is set for the tank with fuel and
not on an empty tank.
• Leaving your ignition key turned to on
for over two minutes without starting
may make starting difficult because
the glow plugs will cease activation.
Reset the system by turning the ignition
key to off and then back to on again.
Note: If the system is out of fuel and the
engine will not start, do not continue
cranking the engine. Continued cranking can
damage the high-pressure fuel pump.
If the engine runs hot
The following could cause the engine to
overheat:
• Lack of coolant
• Dirty cooling system. •
Plugged radiator fins, A/C condenser
and/or oil cooler
• Malfunctioning fan drive
• Driving with frozen coolant
• Sticking thermostat
• Overloading or pulling heavy trailers
during hot weather
• Grill or radiator air blockage
• Slipping or missing drive belt
• Plugged or very dirty air filter
If fuses burn out WARNING
Replacement fuses and circuit
breakers must always be the same
rating as the original equipment
shown. Never replace a fuse or circuit
breaker with one of a higher rating. Higher
rated fuses or circuit breakers could allow
circuit overloading in the event of a circuit
malfunction, resulting in severe vehicle
damage or personal injury due to fire. Burned-out or blown fuses usually indicate
an electrical short-circuit, although a fuse
may occasionally burn out from vibration.
Insert a second fuse. If this fuse
immediately burns out and you cannot
locate the cause, return your vehicle to
your dealer for a circuit check.
Refer to the Owner
’s Manual for
replacement of fuses.
Selective catalytic reduction system
speed limit and Idle-only modes
If the vehicle ’s speed is limited or in an
idle-only mode, the selective catalytic
reduction system may be limiting the
vehicle ’s functions due to low or
contaminated diesel exhaust fluid. Check
the diesel exhaust fluid. See
Selective
Catalytic Reduction System (page 20).
6
Super Duty (TFA) Introduction

Glow Plug Pre-Heat
With the key in the on position,
this light illuminates if glow plug
heat is necessary as a starting
aid. Wait until the light goes off before
starting. See Starting a Diesel Engine
(page 9).
After the engine starts, the light should turn
off. The light should always momentarily
illuminate when the engine is cold and you
turn the ignition to on.
Water In Fuel During refueling, it is possible for
water-contaminated diesel fuel
to be pumped into your tank.
Your vehicle ’s fuel system is equipped with
a fuel filter/water separator to remove
water from the fuel. The Water In Fuel
(WIF) light will illuminate when the Fuel
and Water Separator has a significant
quantity of water in it and requires
immediate draining.
If the water in fuel light illuminates when
the engine is running, stop your vehicle as
soon as safely possible, shut off the engine,
then drain the fuel and water separator.
See
Fuel Quality (page 14). Allowing
water to stay in the fuel system, after the
water in fuel light has illuminated, could
result in extensive damage or failure of the
fuel injection system. WARNING
Do not drain the fuel and water
separator while the engine is running.
Fuel may ignite if the separator is
drained while the engine is running or the
vehicle is moving. Note:
If you drain the fuel and water
separator while the system is running air will
enter into the fuel system. The engine will
not operate properly if air enters the system.
8
Super Duty (TFA) Instrument Cluster

Operation in Snow and Rain
Vehicle operation in heavy snowfall or
extreme rain conditions may feed
excessive amounts of snow or water into
the air intake system. This could plug the
air filter with snow and may cause the
engine to lose power and possibly shut
down.
We recommend the following actions after
operating your vehicle up to 200 miles
(320 kilometers) in snowfall or extreme
rain:
•
Snow: At the earliest opportunity, open
the hood and clear all the snow and ice
from the air filter housing inlet (do not
remove the foam filter) and reset the
air filter restriction gauge.
Note: Removal of the foam filter degrades
your vehicle performance during snow and
hot weather conditions.
• Extreme rain: The air filter dries after
about 15– 30 minutes at highway
speeds. At the earliest opportunity,
open the hood and reset the air filter
restriction gauge.
Refer to Air filter and restriction gauge in
the Maintenance chapter for more
information. See Changing the Engine
Air Filter (page 49).
Operation in Standing Water
Ingestion of water into the diesel engine
can result in immediate and severe
damage to the engine. If driving through
water, slow down to avoid splashing water
into the intake. If the engine stalls, and you
suspect ingestion of water into the engine,
do not try to restart the engine. Consult
your dealer for service immediately. Your fuel tank vents to the atmosphere by
valves on top of the tank and through the
fuel cap. If water reaches the top of the
tank, the valves may pull water into the
fuel tank. Water in the fuel can cause
performance issues and damage the fuel
injection system.
SWITCHING OFF THE ENGINE
Turn the ignition to the off position.
To prolong engine life (especially after
extended high speed, high ambient
temperature, or high GVW/GCW operation,
such as heavy loads or heavy trailers), it is
recommended that a hot engine be idled
for 3-5 minutes. This allows the
turbocharged engine to cool down. For
more information on GVW/GCW, see the
Load Carrying chapter in your Owner
’s
Manual.
ENGINE IDLE SHUTDOWN
Your vehicle may be equipped with an
engine idle shutdown system. This system
automatically shuts down your engine
when it has been idling in
P (Park) or N
(Neutral) for five minutes (parking brake
set) or 15 minutes (parking brake not set).
When the engine idle shutdown process
has started:
• A chime sounds and the information
display will show ENGINE TURNS OFF
IN 30 (seconds) and start counting
down
• You can restart the five or 15-minute
timer by changing the position of the
accelerator pedal, brake pedal or the
park brake within the final 30 seconds
• When the timer reaches zero, the
engine shuts down and this message
will appear in your information display
ENGINE TURNED OFF
12
Super Duty (TFA) Starting and Stopping the Engine

•
One minute after the engine has shut
down, the electrical system simulates
key off, even though the ignition is still
in the on position, initiating normal
accessory delay period
• You must move the ignition to the off
position to reset the system before
restarting your vehicle.
The engine idle shutdown idle timer does
not start if:
• The engine is operating in power
take-off mode.
• The engine coolant temperature is
below 60°F (16°C).
• The exhaust emission control device is
regenerating.
ENGINE BLOCK HEATER (IF
EQUIPPED)
Refer to the Starting and Stopping the
Engine chapter in your Owner ’s Manual.
Rapid Heat Supplemental Heating
System
Note: Additional aftermarket electrical
loads operated during engine warm up may
affect the performance of the rapid heat
supplemental heater.
The optional rapid heat feature is an
electrically powered device that provides
supplemental heat during engine warm up.
During initial warm up, you should use a
mid to low blower speed for maximum
effectiveness. When operating in
automatic mode (when equipped) the
climate control unit determines the
appropriate blower speed for existing
conditions.
13
Super Duty (TFA) Starting and Stopping the Engine

Note:
The engine will not run properly if you
do not install the diesel fuel conditioner
module fuel filter in the housing or if the
filter bowl is not tightened to the
mechanical stop.
Note: You will need to purge the system of
air after removal or changing of the filter.
See purging air from the fuel system later
in this chapter.
Removal - Engine-mounted fuel filter
The engine-mounted fuel filter is a plastic
disposable cartridge. To remove it, do the
following: 1.
Disconnect both fuel lines by squeezing
the connector tabs and pulling the lines
straight off. Note:
Although the fuel system is not fully
pressurized when the vehicle is off, some
residual pressure may remain in the fuel
system since it can take some time for the
pressure to completely bleed off. Therefore,
we recommend you place a shop rag below
the filter connectors to absorb the small
amount of fuel that will drain.
2. Rotate the filter fully counterclockwise
until the peg is at the far end of the slot.
3. Pull the filter straight up from the bracket and discard the filter.
Installation – Engine-mounted fuel
filter
1. Install the new filter into the filter bracket. Turn the filter clockwise to
lock it in place.
2. Reconnect both fuel lines.
Note: Using a fuel that has more than
average impurities may require you to
replace the fuel filter more frequently than
the service interval specifies.
Note: You will need to purge the system of
air after removal or changing of the filter.
See purging air from the fuel system later
in this chapter.
Purging air from the fuel system
Turn the ignition key to on for 30 seconds,
then turn it to off. Do this six times in a row
to purge any trapped air from the fuel
system.
After filter service, a no start or rough
running engine may indicate that air is
entering the system through the filter bowl
seal or drain. Make sure the drain is tight
and you tightened the filter bowl to the
mechanical stop.
19
Super Duty (TFA) Fuel and RefuelingE163363 E163364

FUEL SHUTOFF
In the event of a moderate to severe
collision, this vehicle is equipped with a
fuel pump shut-off feature that stops the
flow of fuel to the engine. Not every impact
will cause a shut-off.
After an accident, if the engine cranks but
does not start, this switch may have been
activated.
This switch is located on the passenger
’s
side of the instrument panel. Open the
front passenger door and remove the small
access panel The switch has a red button on top of it.
To reset the switch:
1. Turn the ignition off.
2. Check the fuel system for leaks. 3. If no leaks are apparent, reset the
switch by pushing in on the reset
button.
4. Turn the ignition on.
5. Wait a few seconds and return the key
to off.
6. Make another check for leaks.
Running Out Of DEF (Diesel
Exhaust Fluid)
If your vehicle runs out of DEF, it will enter
into a speed limited mode and can also
enter into an idle-only mode. Normal
vehicle operation will not resume until DEF
is refilled. See Selective Catalytic
Reduction System (page 20).
Contact roadside assistance for help in
finding a retailer that sells DEF. See the
Customer Assistance chapter in the
Owner ’s Manual for more information.
JUMP-STARTING THE VEHICLE WARNINGS
The gases around the battery can
explode if exposed to flames, sparks,
or lit cigarettes. An explosion could
result in injury or vehicle damage. Batteries contain sulfuric acid which
can burn skin, eyes and clothing, if
contacted.
Use only an adequate-sized cable
with insulated clamps.
Preparing Your Vehicle
Note:
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.
38
Super Duty (TFA) Roadside EmergenciesE163366 E163367

CLEANING THE ENGINE
Engines are more efficient when they are
clean because grease and dirt buildup keep
the engine warmer than normal.
When washing:
•
Take care when using a power washer
to clean the engine. The high-pressure
fluid could penetrate the sealed parts
and cause damage.
• Do not spray a hot engine with cold
water to avoid cracking the engine
block or other engine components.
• Spray Motorcraft Engine Shampoo and
Degreaser on all parts that require
cleaning and pressure rinse clean. In
Canada, use Motorcraft Engine
Shampoo.
• Never wash or rinse the engine while it
is hot or running; water in the running
engine may cause internal damage.
• Never wash or rinse any ignition coil,
spark plug wire or spark plug well, or
the area in and around these locations.
• Cover the battery, power distribution
box, and air filter assembly to prevent
water damage when cleaning the
engine.
CLEANING THE EXHAUST WARNINGS
Failure to maintain the functional
holes, in the tailpipe section of the
exhaust, clean and free of debris or
foreign material may result in the holes
becoming blocked or plugged. Do not
modify or remove the tail-pipe section.
Blocked or plugged holes or
removal/modification of the system could
result in elevated exhaust gas
temperatures which may result in
vehicle/property damage or personal
injury. WARNINGS
The normal operating temperature
of the exhaust system is very high.
Never work around or attempt to
repair any part of the exhaust system until
it has cooled. Use special care when
working around the diesel oxidation
catalytic converter and/or the diesel
particulate filter (DPF). The diesel
oxidation catalytic converter and/or the
DPF heats up to a high temperature after
only a short period of engine operation and
can stay hot even after the engine is turned
off. Failure to follow these instructions may
result in personal injury. The visible holes in the exhaust tip and the
holes under the shield just inboard of the
right rear tire(s) are functional. The holes
need to be kept clear of mud/debris or
foreign material to maintain proper
function of the exhaust system. Clean and
remove debris or foreign material if present
as needed. Spraying with a hose during
regular washing of vehicle should help
keep holes clean and clear of debris or
foreign material.
53
Super Duty (TFA) Vehicle CareE163380