
If the service engine soon indicator remains
on, have your vehicle serviced at the first
available opportunity. Although some
malfunctions detected by the OBD-II may
not have symptoms that are apparent,
continued driving with the service engine
soon indicator on can result in increased
emissions, lower fuel economy, reduced
engine and transmission smoothness, and
lead to more costly repairs.
Readiness for
Inspection/Maintenance (I/M)
Testing
Some state/provincial and local
governments may have
Inspection/Maintenance (I/M) programs
to inspect the emission control equipment
on your vehicle. Failure to pass this
inspection could prevent you from getting
a vehicle registration.
If the service engine soon
indicator is on or the bulb does
not work, you may need to have
the vehicle serviced. See On-Board
Diagnostics (OBD-II).
Your vehicle may not pass the I/M test if
the service engine soon indicator is on or
not working properly (bulb is burned out),
or if the OBD-II system has determined
that some of the emission control systems
have not been properly checked. In this
case, your vehicle is not ready for I/M
testing.
If the vehicle ’s engine or transmission has
just been serviced, or the battery has
recently run down or been replaced, the
OBD-II system may indicate that the
vehicle is not ready for I/M testing. To
determine if the vehicle is ready for I/M
testing, turn the ignition key to the on
position for 15 seconds without cranking the engine. If the service engine soon
indicator blinks eight times, it means that
the vehicle is not ready for I/M testing; if
the service engine soon indicator stays on
solid, it means that the vehicle is ready for
I/M testing.
The OBD-II system monitors the emission
control system during normal driving. A
complete check may take several days. If
the vehicle is not ready for I/M testing, you
may need to perform the following driving
cycle consisting of mixed city and highway
driving:
Drive on an expressway or highway for a
steady 15 minutes, followed by 20 minutes
of stop-and-go driving with at least four
30-second idle periods.
Allow the vehicle to sit for at least eight
hours without starting the engine. Then,
start the engine and complete the above
driving cycle. The engine must warm up to
its normal operating temperature. Once
started, do not turn off the engine until the
above driving cycle is complete. If the
vehicle is still not ready for I/M testing, you
will have to repeat the above driving cycle.
EMISSION CONTROL SYSTEM
- 6.7L DIESEL
Diesel Exhaust System: Oxidation
Catalyst And Diesel Particulate
Filter System  (If Equipped)
Your vehicle is equipped with a diesel
particulate filter. The diesel particulate
filter is an inline filter in the exhaust system
that reduces carbon emissions by trapping
exhaust particles before they reach the
tailpipe. The diesel particulate filter looks
similar to a traditional exhaust catalyst,
except larger, and is part of the exhaust
system under your vehicle. The filter
couples to a diesel oxidation catalyst that
reduces the amount of harmful exhaust
emitted from the tailpipe. As soot gathers
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in the system, it begins to restrict the filter.
You need to periodically clean the soot
that gathers inside the filter. You can clean
the soot in two different ways, passive
regeneration and active regeneration. Both
methods occur automatically and require
no actions from the driver. During either
one of these regeneration methods, you
may notice a change in exhaust tone. At
certain times, the information display
shows various messages related to the
diesel particulate filter.  See Information
Displays (page 62). Passive Regeneration
In passive regeneration, the exhaust
system temperature and constituents
automatically clean the filter, or reduce
the soot level, by burning (oxidizing) the
soot. Cleaning occurs naturally because of
normal engine operating conditions (at
varying levels, due to driving patterns).
Diesel Particulate Filter Maintenance
You must properly maintain your vehicle's
diesel particulate filter in order for it to
function properly.
Do not disregard the following maintenance messages: Action and Description
Message
This may degrade vehicle performance and could lead to
engine damage that may not be covered by the vehicle
Warranty.
Exhaust filter overloaded
Drive to clean
Exhaust filter at limit
Clean now
Failure to perform active or Operator
Commanded Regeneration when
instructed could result in a clogged diesel
particulate filter. If your diesel particulate
filter fills beyond the regeneration
threshold, your vehicle disables the ability
for active and Operator Commanded
Regeneration. This could result in
irreversible damage to the filter requiring
replacement that your warranty may not
cover. If your vehicle is not equipped with
Operator Commanded Regeneration,
check with your dealer for availability. Once the diesel particulate filter is full of
exhaust particles, the engine control
module commands the exhaust system to
clean the filter through a process called
active regeneration. Active regeneration
requires the engine computer to raise the
exhaust temperature to eliminate the
particles. During cleaning, the particles
convert to harmless gasses. Once cleaned
the diesel particulate filter continues
trapping exhaust particles.
The regeneration process operates more
efficiently when you safely operate your
vehicle at least 30 mph (48 km/h) with a
steady pedal for approximately 20 minutes
to complete the process. The frequency
and duration of regeneration fluctuates by
how you drive your vehicle, outside air
temperature, and altitude. For most driving,
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regeneration frequency varies from
100–500 miles (161–805 km) between
occurrences and each occurrence lasts
9–
35 minutes. You can usually reduce the
duration of regeneration if you maintain a
constant speed above 30 mph (48 km/h).
When the engine control module detects that the diesel particulate filter is nearly
full of particulates and you are not operating your vehicle in a manner to allow
effective automatic cleaning, the following messages appear in the information
display: Action and Description
Message
This message appears as a reminder for you to drive in order
to clean the diesel particulate filter. If you operate your vehicle
in a manner to allow effective automatic cleaning, the
information display shows a cleaning exhaust filter message,
which is the normal regeneration process.  See Information
Messages (page 64).
Exhaust filter overloaded
Drive to clean
You can also choose Operator
Commanded Regeneration to clean the
exhaust system at this point. See How to
start Operator Commanded Regeneration
later in this chapter.
If you are not able to drive in a manner that
allows effective automatic cleaning (active
regeneration) or you choose to perform
regeneration of the diesel particulate filter
(cleaning) while at idle (stationary), then
Operator Commanded Regeneration
would need to be performed. See Operator
Commanded Regeneration later in this
chapter.
Operator Commanded Regeneration
(If Equipped)
If your vehicle is operated with significant
stationary operation, low speed drive
cycles less than 25 mph, short drive cycles,
a drive time is less than 10 - 15 minutes or
the vehicle does not fully warm up, passive
and active regeneration may not
sufficiently clean the diesel particulate
filter system. Operator Commanded Regeneration allows you to manually start
regeneration of the diesel particulate filter
at idle (while stationary) to clean the filter.
If you are not sure whether your vehicle is
equipped with this feature, contact an
authorized dealer.
When to Carry Out Operator Commanded
Regeneration
You can use the Operator Commanded
Regeneration feature if any of the following
messages appear in the information
display and:
•
You are not able to drive in a manner
that allows effective automatic
cleaning (active regeneration).
• You choose to manually start the
regeneration (cleaning) of the diesel
particulate filter manually while the
vehicle is idle (stationary). Message
Exhaust filter overloaded Drive to clean
Exhaust filter at limit Clean now
Exhaust Filter Full Clean Soon
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Operator Commanded Regeneration
Precautions and Safe Exhaust Position
WARNING
Failure to comply with the following
instructions for Operator
Commanded Regeneration may
result in fire, serious injury, death or
property damage. Before you start operator commanded
regeneration, do the following:
•
Place your vehicle in Park (P) with the
parking brake set on stable, level
ground.
• You must park your vehicle outside of
any structure.
• Your vehicle must be 10– 15 feet (3–5
meters) away from any obstructions
and must be away from materials that
can easily combust or melt (for
example, paper, leaves, petroleum
products, fuels, plastics and other dry
organic material). •
Make sure there is a minimum of 1/8
tank of fuel.
• Make sure all fluids are at proper levels.
How to Start Operator Commanded
Regeneration WARNING
Stay clear of exhaust tip during
regeneration. You or others can be
burned.
Note:
You cannot use the Operator
Commanded Regeneration until the diesel
particulate filter load percentage has
reached 100% (Full). The diesel particulate
filter load percentage fluctuates up and
down when driving your vehicle due to active
and passive regenerations.
Note: During the use of Operator
Commanded Regeneration, you may
observe a light amount of white smoke. This
is normal. You cannot use the Operator
Commanded Regeneration if the
service engine soon light is
illuminated.
Information Display Procedure
Start with your vehicle engine and when fully warmed press the 
Info button on
the steering wheel until the following message appears in the information display: Action and Description
Message
Press the Reset Button to switch the display to 
Y to answer
yes to this prompt and then follow the prompts regarding
exhaust position as needed to initiate Operator Commanded
Regeneration. Be sure to understand each prompt. If you are
not sure what is being asked by each prompt, contact an
authorized dealer. The display confirms the operation has
started and when it has finished.
Exhaust filter at limit
Clean now
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If the diesel particulate filter is near or at saturation, a message requesting
permission to initiate filter cleaning appears in the information display:
Action and Description
Message
Answer yes to this prompt and then follow the prompts
regarding exhaust position as needed to initiate Operator
Commanded Regeneration. Be sure to understand each
prompt. If you are not sure what is being asked by each
prompt, contact an authorized dealer. The display confirms
the operation has started and when it has finished. You can
also drive to clean the filter. See Active regeneration earlier
in this chapter.
Exhaust Filter Full Clean
Soon When the system is at the point
of oversaturation, the service
engine soon light illuminates.
The following message appears in the information display: Action and Description
Message
You cannot initiate cleaning. You must have your vehicle
serviced by an authorized dealer.
Exhaust filter over limit
Service now
Once Operator Commanded Regeneration
starts, the engine ’s rpm raises to
approximately 2000 rpm and the cooling
fan speed increases; you will hear a change
in audible sound due to the fan and engine
speed increase.
It is not necessary to open the hood on the
engine compartment. Once Operator
Commanded Regeneration is complete,
the engine rpm and fan returns to normal
idling. The exhaust system remains very
hot for several minutes even after
regeneration is complete. Do not reposition
the vehicle over materials that could burn
until the exhaust system has had sufficient
time to cool. Depending on the amount of
soot collected by the diesel particulate
filter, ambient temperature, and altitude,
Operator Commanded Regeneration lasts
approximately 30 minutes. Operator Commanded Regeneration
with Automatic Regeneration Control
(If Equipped)
If your vehicle is operated with significant
stationary operation, low speed drive
cycles less than 25 mph (40 km/h), short
drive cycles, drive time less than 15 minutes
or the vehicle does not fully warm up,
passive and active regeneration may not
sufficiently clean the diesel particulate
filter system. You can switch off automatic
regeneration until better driving conditions
are available, for example steady high
driving. You can then switch automatic
regeneration back on to clean the diesel
particulate filter.
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Switching Automatic Regeneration Control On and Off
To switch Automatic Regeneration Control On and Off, press SETUP button on
steering wheel and then scroll to: Action and Description
Message
Select 
Y or N to switch it On or Off.
Auto Exh.Clean
After you switch Automatic Regeneration Control off, one of the following warning
messages may be displayed:
The diesel particulate filter is full and you should
switch the automatic regeneration control on as
soon as possible.
Exhaust Filter Full Clean Soon
The diesel particulate filter is overloaded and you
must switch the automatic regeneration control on
as soon as possible.
Exhaust Filter Overloaded Clean
Now
You must clean the diesel particulate filter immedi-
ately. Failing to do so would cause the diesel
particulate filter to be blocked.
Exhaust filter at limit Clean now
How to Interrupt or Cancel Operator
Commanded Regeneration
If you need to cancel the Operator
Commanded Regeneration, pressing the
brake, accelerator, or shutting off the
vehicle stops the procedure. Depending on
the amount of time you allowed the
Operator Commanded Regeneration to
operate, soot may not have had sufficient
time to be eliminated, but the exhaust
system and exhaust gas may still be hot.
If you shut your vehicle off during Operator
Commanded Regeneration, you will notice
turbo flutter. This is a normal consequence
caused by shutting off a diesel engine
during boosted operation and is considered
normal. Filter Service and Maintenance
Over time, a slight amount of ash builds
up in the diesel particulate filter, which is
not removed during the regeneration
process. The filter may need to be removed
for ash cleaning at approximately 120,000
miles (193,000 km) or greater (actual
mileage can vary greatly depending upon
engine/vehicle operating conditions) and
replaced with a new or remanufactured
(ash cleaned) part. The filter may need to
be replaced at approximately 250,000
miles (400,000 km) depending upon
vehicle operating conditions.
In both cases, the engine control
system illuminates a service light
to inform you that your vehicle
requires service.
If there are any issues with the diesel
particulate filter system, the engine control
system illuminates a service light to inform
you that your vehicle requires service.
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Powertrain fault warning lamp.
Service engine soon indicator.
Resonator and Tailpipe Assembly
Maintenance WARNING
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. Aftermarket devices or modifications to
the exhaust system can reduce the
effectiveness of the exhaust system as
well as cause damage to the exhaust
system or engine. This may also degrade
vehicle performance and could lead to
engine damage that may not be covered
by the vehicle Warranty. See the Warranty
Guide for more information. Emission Control System(s) Laws WARNING
Do not remove or alter the original
equipment floor covering or
insulation between it and the metal
floor of the vehicle. The floor covering and
insulation protect occupants of the vehicle
from the engine and exhaust system heat
and noise. On vehicles with no original
equipment floor covering insulation, do not
carry passengers in a manner that permits
prolonged skin contact with the metal
floor. Provide adequate insulation. Failure
to follow these instructions may result in
fire or personal injury. In the U.S. federal law and certain state
laws prohibit removing or rendering
inoperative emission control system(s).
Similar federal or provincial laws may
apply in Canada. Ford recommends
against any vehicle modification without
determining applicable law.
Tampering with emissions
control systems (including
related sensors and the Diesel
Exhaust Fluid (DEF) injection system) can
result in reduced engine power and the
illumination of the service engine soon
light.
Tampering with a Noise Control
System
Federal law prohibits the following acts or
the causing thereof: (1) The removal or
rendering inoperative by any person other
than for purposes of maintenance, repair
or replacement of any device or element
of design incorporated into any new vehicle
for the purpose of noise control prior to its
sale or delivery to the ultimate purchaser
or while it is in use, or (2) the use of the
vehicle after such device or element of
design has been removed or rendered
inoperative by any person.
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Among those acts, which the U.S.
Environmental Protection Agency may
presume to constitute tampering are the
acts listed below:
•
Removal of hood blanket, fender apron
absorbers, fender apron barriers,
underbody noise shields or acoustically
absorptive material.
• Tampering or rendering inoperative the
engine speed governor, to allow engine
speed to exceed manufacturer ’s
specifications.
The complexity of the diesel engine makes
it so the owner is discouraged from
attempting to perform maintenance other
than the services described in this Owner's
Manual.
If you experience difficulty starting the
engine, rough idling, excessive exhaust
smoke, a decrease in engine performance
or excess fuel consumption, perform the
following checks:
• A plugged or disconnected air inlet
system or engine air filter element.
• Water in the fuel filter and water
separator.
• A clogged fuel filter.
• Contaminated fuel.
• Air in the fuel system, due to loose
connections.
• An open or pinched sensor hose.
• Check engine oil level.
• Wrong fuel or oil viscosity for the
climatic conditions.
If these checks do not help you correct the
engine performance problem you are
experiencing, consult an authorized dealer. Noise Emissions Warranty, Prohibited
Tampering Acts and Maintenance
On January 1, 1978, Federal regulation
became effective governing the noise
emission on trucks over 10,000 lbs. (4,536
kg) GVWR (Gross Vehicle Weight Rating).
The preceding statements concerning
prohibited tampering acts and
maintenance, and the noise warranty
found in the Warranty Guide, are
applicable to complete chassis cabs over
10,000 lbs. (4,536 kg) GVWR.
FUEL TANK SELECTOR
SWITCH (If Equipped)
Your vehicle has two fuel tanks. The fuel
in each fuel tank is independently used.
Use the switch on the instrument panel to
select the left-hand or right-hand fuel tank.
The fuel gauge indicates the remaining fuel
in the selected fuel tank.  See 
Gauges
(page 54).
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