2021 FORD F650/750 ECO mode

ABOUT THIS MANUAL
Thank you for choosing Ford. We
recommend that you take some time to
get to know your vehicle by reading this
manual. The more that you know about
your vehicle, the greater the safety and
pleasure you will get from driving it.
WARNING: Driving while distracted
can result in loss of vehicle control, crash
and injury. We strongly recommend that
you use extreme caution when using any
device that may take your focus off the
road. Your primary responsibility is the
safe operation of your vehicle. We
recommend against the use of any
hand-held device while driving and
encourage the use of voice-operated
systems when possible. Make sure you
are aware of all applicable local laws
that may affect the use of electronic
devices while driving.
Note: Always use and operate your vehicle
in line with all applicable laws and
regulations.
Note: Pass on this manual when selling
your vehicle. It is an integral part of your
vehicle.
Note: Your vehicle ’s powertrain control
systems can detect and store information
about vehicle modifications that increase
horsepower and torque output such as
whether or not performance-enhancing
powertrain components commonly referred
to as performance chips have been used.
This information will stay in the system ’s
memory and cannot be erased even if the
modification is removed. Ford Motor
Company, Ford of Canada, Ford of Mexico
and service or repair facilities can retrieve
this information when servicing your vehicle.
Ford Motor Company may use this
information to determine if your warranty
covers any needed repairs. Note:
Some aftermarket products may
cause severe engine/transmission and/or
exhaust system damage; refer to your
warranty information for more information.
Your new diesel engine will feel, drive and
function somewhat differently than a
gasoline engine. Therefore it is very
important that you read and thoroughly
familiarize yourself and others operating
the vehicle with this guide. There is a
special procedure for turning off the diesel
engine. See Starting a Diesel Engine
(page 95). It is important to read and
understand this material in order to
maintain the best service life for your
engine.
Ford may discontinue models or change
specifications without any notice and
without incurring obligations.
Note: Either Ford Motor Company or an
authorized Ford dealer may have originally
sold this incomplete vehicle to a vehicle
modifier who upfitted it. As a result, some
of the options and features on this vehicle
may differ from what we describe in this
manual.
This manual may qualify the location of a
component as left-hand side or right-hand
side. The side is determined when facing
forward in the seat.
7
F650750 (TBC) , enUSA, Edition date: 202010, Second-Printing Introduction

Right-hand side.
A
Left-hand side.
B
Warnings WARNING: Throughout this guide,
you will find warnings identified by the
warning symbol. Warnings remind you
to be especially careful to reduce the risk
of personal injury.
Diesel Engine Information
The diesel engine fuel system is a
pressurized two-stage filtration system
and consists of:
• A frame-mounted Fuel and Water
Separator primary filter with an electric
fuel pump and water drain
• An engine-mounted secondary fuel
filter
• A fuel injector for each cylinder (8
total)
• A high-pressure fuel pump
• A high-pressure fuel rail for each
cylinder bank (2 total)
• Numerous high-pressure pipes from
the high-pressure pump to the rails,
and rails to the injectors The fuel and water separator removes
both water and impurities from the fuel.
The engine-mounted filter filters finer
impurities from the diesel fuel. The
engine-mounted fuel filter and the
frame-mounted fuel filter should be
changed at the recommended service
interval or when indicated by the
information display LOW FUEL PRESSURE
message. See
Scheduled Maintenance
(page 319).
The fuel and water separator should be
drained at regular intervals (recommended
at every oil change) or when indicated by
the information display and water in fuel
indicator light. See
Fuel Quality (page
100).
Proper fuel filter maintenance and prompt
water draining when the water in fuel light
illuminates is essential to prevent injection
equipment damage. Ignoring the water in
fuel light or the information display
message WATER IN FUEL DRAIN FILTER
can cause your vehicle to go into a reduced
power mode.
A frame-mounted electric fuel pump
located inside the fuel and water separator
draws fuel from the fuel tank to provide
pressurized fuel to the engine. The fuel
pump contains a pressure relief valve for
overpressure protection in the event of
restricted flow.
The fuel injection system is controlled
through the powertrain control module.
Engine Protection Mode
Ford diesel engines are equipped with
engine protection and emission control
systems. These systems monitor critical
temperatures and pressures, and modify
engine operation accordingly. These
modified engine performance
characteristics are normal.
8
F650750 (TBC) , enUSA, Edition date: 202010, Second-Printing IntroductionE154903

If these modified engine performance
characteristics persist for an extended
period and either the service engine soon
or powertrain malfunction, reduced power,
electronic throttle control light is
illuminated, have the system checked by
an authorized dealer.
Service engine soon
Powertrain malfunction, reduced
power, electronic throttle control
Diesel Lubrication System
It is important to change the engine oil at
the recommended service intervals or
when indicated by the information display
to maintain oil viscosity. Extending the oil
and filter change interval beyond the
recommended interval can negatively
affect engine performance, fuel economy
and engine life. See Engine Oil Check
(page 218).
Engine and secondary cooling system
The cooling system contains a primary
cooling loop to cool the engine and a
secondary cooling loop to cool the
transmission, 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. You can find more
information about coolant additives and
coolant change intervals in the coolant
chapter. See
General Maintenance
Information (page 319). 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 (DEF) that you must replenish at
certain intervals. Failure to maintain proper
DEF levels or if the DEF becomes
contaminated will result in vehicle speed
limitations or result in your vehicle entering
an idle-only mode. See
Selective
Catalytic Reductant System (page 112).
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 the start position, 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 the start position, 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.
9
F650750 (TBC) , enUSA, Edition date: 202010, Second-Printing 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, See
Jump Starting the Vehicle (page 183).
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. See
Changing a Fuse
(page 201).
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 DEF. Check the DEF. See
Selective Catalytic Reductant System
(page
112).
SYMBOLS GLOSSARY
These are some of the symbols you may
see on your vehicle.
10
F650750 (TBC) , enUSA, Edition date: 202010, Second-Printing Introduction

1. Position the child restraint in a seat
with a combination lap and shoulder
belt. 2. Pull down on the shoulder belt and
then grasp the shoulder belt and lap
belt together. 3.
While holding the shoulder and lap belt
portions together, route the tongue
through the child restraint according
to the child restraint manufacturer's
instructions. Be sure the belt webbing
is not twisted. 4. Insert the belt tongue into the proper
buckle (the buckle closest to the
direction the tongue is coming from)
for that seating position until you hear
a snap and feel the latch engage. Make
sure the tongue is latched securely by
pulling on it. 5. To put the retractor in the automatic
locking mode, grasp the shoulder
portion of the belt and pull downward
until you pull all of the belt out.
27
F650750 (TBC) , enUSA, Edition date: 202010, Second-Printing Child SafetyE142528 E142529 E142530 E142531 E142875

6. Allow the belt to retract to remove
slack. The belt clicks as it retracts to
indicate it is in the automatic locking
mode.
7. Try to pull the belt out of the retractor to make sure the retractor is in the
automatic locking mode (you should
not be able to pull more belt out). If the
retractor is not locked, unbuckle the
belt and repeat Steps 5 and 6. 8.
Remove remaining slack from the belt.
Force the seat down with extra weight,
for example, by pressing down or
kneeling on the child restraint while
pulling up on the shoulder belt in order
to force slack from the belt. This is
necessary to remove the remaining
slack that exists once you add the extra
weight of the child to the child restraint.
It also helps to achieve the proper
snugness of the child restraint to your
vehicle. Sometimes, a slight lean
toward the buckle helps to remove
remaining slack from the belt.
9. Attach the tether strap (if the child restraint is equipped). 10. Before placing the child in the seat,
forcibly move the seat forward and
back to make sure the seat is securely
held in place.
To check this, grab the seat at the belt path
and attempt to move it side to side and
forward and back. There should be no
more than 1 in (2.5 cm) of movement for
proper installation.
We recommend checking with a NHTSA
Certified Child Passenger Safety
Technician to make certain the child
restraint is properly installed. In Canada,
check with Transport Canada for referral
to a Child Car Seat Clinic.
Using Cinch Tongue Lap and
Shoulder Belts (All Front Center,
Super Cab and Crew Cab Rear
Center Positions) WARNING:
Do not place a
rearward facing child restraint in front of
an active airbag. Failure to follow this
instruction could result in personal injury
or death.
28
F650750 (TBC) , enUSA, Edition date: 202010, Second-Printing Child SafetyE142533 E142534

PRINCIPLE OF OPERATION
WARNING: Always drive and ride
with the seat backrest upright and the
lap belt snug and low across the hips. WARNING:
To reduce the risk of
injury, make sure children sit where they
can be properly restrained. WARNING:
Never let a passenger
hold a child on his or her lap while your
vehicle is moving. The passenger cannot
protect the child from injury in a crash
which may result in serious injury or
death. WARNING:
All occupants of the
vehicle, including the driver, should
always properly wear their safety belts,
even when an airbag supplemental
restraint system is provided. Failure to
properly wear your safety belt could
seriously increase the risk of injury or
death. WARNING:
It is extremely
dangerous to ride in a cargo area, inside
or outside of a vehicle. In a crash, people
riding in these areas are more likely to be
seriously injured or killed. Do not allow
people to ride in any area of your vehicle
that is not equipped with seats and
safety belts. Be sure everyone in your
vehicle is in a seat and using a safety belt
properly. WARNING:
In a rollover crash, an
unbelted person is significantly more
likely to die than a person wearing a
safety belt. WARNING:
Each seating position
in your vehicle has a specific safety belt
assembly which is made up of one
buckle and one tongue that are designed
to be used as a pair. 1) Use the shoulder
belt on the outside shoulder only. Never
wear the shoulder belt under the arm. 2)
Never swing the safety belt around your
neck over the inside shoulder. 3) Never
use a single belt for more than one
person. WARNING:
When possible, all
children 12 years old and under should
be properly restrained in a rear seating
position. Failure to follow this could
seriously increase the risk of injury or
death. WARNING:
Safety belts and seats
can become hot in a vehicle that has
been closed up in sunny weather; they
could burn a small child. Check seat
covers and buckles before you place a
child anywhere near them. WARNING:
Front and rear seat
occupants, including pregnant women,
should wear safety belts for optimum
protection in an accident.
All seating positions in this vehicle have
lap and shoulder safety belts. All
occupants of the vehicle should always
properly wear their safety belts, even when
an airbag supplemental restraint system
is provided.
The safety belt system consists of:
• Lap and shoulder safety belts.
• Shoulder safety belt with automatic
locking mode, (except driver safety
belt).
37
F650750 (TBC) , enUSA, Edition date: 202010, Second-Printing Seatbelts

Using Seatbelts During Pregnancy
WARNING: Always ride and drive
with your seatback upright and properly
fasten your seatbelt. Fit the lap portion
of the seatbelt snugly and low across
the hips. Position the shoulder portion of
the seatbelt across your chest. Pregnant
women must follow this practice. See
the following figure. Pregnant women should always wear their
seatbelt. Position the lap belt portion of a
combination lap and shoulder belt low
across the hips below the belly and worn
as tight as comfort allows. Position the
shoulder belt to cross the middle of the
shoulder and the center of the chest.
Seatbelt Locking Modes
WARNING:
If your vehicle is
involved in a crash, have the seatbelts
and associated components inspected
as soon as possible. Failure to follow this
instruction could result in personal injury
or death. The safety restraints in the vehicle are
combination lap and shoulder belts. The
driver seatbelt has the first type of locking
mode. The front outboard passenger and
rear outboard seat seatbelts have both
types of locking modes described as
follows:
Vehicle Sensitive Mode
This is the normal retractor mode, which
allows free shoulder belt length
adjustment to your movements and
locking in response to vehicle movement.
For example, if the driver brakes suddenly
or turns a corner sharply, or the vehicle
receives an impact of about
5 mph
(8 km/h) or more, the combination
seatbelts will lock to help reduce forward
movement of the driver and passengers.
In addition, the retractor is designed to lock
if you pull the webbing out too quickly. If
the seatbelt retractor locks, slowly lower
the height adjuster to allow the seatbelt
to retract. If the retractor does not unlock,
pull the seatbelt out slowly then feed a
small length of webbing back toward the
stowed position. For rear seatbelts, recline
the rear seat backrest or push the seat
backrest cushion away from the seatbelt.
Feed a small length of webbing back
toward the stowed position.
Automatic Locking Mode
In this mode, the shoulder belt
automatically prelocks. The belt still
retracts to remove any slack in the
shoulder belt. The automatic locking mode
is not available on the driver seatbelt or
optional front center or rear center
seatbelt.
40
F650750 (TBC) , enUSA, Edition date: 202010, Second-Printing SeatbeltsE142590