2021 FORD F-350 Diesel exhaust fluid

Getting Assistance Outside the U.S. and
Canada .......................................................335
Ordering Additional Owner's Literature ........................................................................\
337
Reporting Safety Defects (U.S. Only) ........................................................................\
337
Reporting Safety Defects (Canada Only) ........................................................................\
337
Fuses
Fuse Specification Chart .........................
339
Changing a Fuse .........................................
346
Maintenance
General Information ..................................
348
Opening and Closing the Hood .............
348
Under Hood Overview - 6.2L .................
349
Under Hood Overview - 6.7L Diesel .....
350
Under Hood Overview - 7.3L ....................
351
Engine Oil Dipstick - 6.2L .........................
352
Engine Oil Dipstick - 6.7L Diesel ............
352
Engine Oil Dipstick - 7.3L ..........................
352
Engine Oil Check - 6.2L .............................
352
Engine Oil Check - 6.7L Diesel ...............
354
Engine Oil Check - 7.3L .............................
355
Changing the Engine Oil and Oil Filter ........................................................................\
356
Oil Change Indicator Reset .....................
356
Changing the Engine Air Filter - 6.2L ........................................................................\
357
Changing the Engine Air Filter - 6.7L Diesel ..........................................................
358
Changing the Engine Air Filter - 7.3L ....
360
Draining the Fuel Filter Water Trap - 6.7L Diesel ...........................................................
361
Engine Coolant Check - 6.2L .................
364
Engine Coolant Check - 6.7L Diesel .....
368
Engine Coolant Check - 7.3L ....................
371
Automatic Transmission Fluid Check ........................................................................\
376
Transfer Case Fluid Check ........................
377Brake Fluid Check
........................................
377
Power Steering Fluid Check ....................
378
Changing the 12V Battery ........................
379
Adjusting the Headlamps ........................
381
Washer Fluid Check ...................................
382
Fuel Filter - 6.2L/7.3L .................................
382
Checking the Wiper Blades ....................
382
Changing the Wiper Blades ....................
382
Changing a Bulb ..........................................
383
Changing the Engine-Mounted and Diesel Fuel Conditioner Module Fuel
Filters - 6.7L Diesel .................................
386
Spring U-Bolt Check - F-600 ................
389
Vehicle Care
General Information ...................................
391
Cleaning Products .......................................
391
Cleaning the Exterior .................................
392
Waxing ............................................................
393
Cleaning the Engine ...................................
393
Cleaning the Exhaust - 6.7L Diesel ......
394
Cleaning the Windows and Wiper Blades ........................................................................\
394
Cleaning the Interior ..................................
395
Cleaning the Instrument Panel and Instrument Cluster Lens .......................
397
Cleaning Leather Seats ............................
397
Repairing Minor Paint Damage .............
399
Cleaning the Wheels .................................
399
Vehicle Storage ...........................................
399
Wheels and Tires
General Information ..................................
402
Tire Care ........................................................
404
Using Snow Chains ....................................
420
Tire Pressure Monitoring System ...........
421
Changing a Road Wheel ..........................
429
Technical Specifications .........................
440
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Super Duty (TFE) Canada/United States of America, enUSA, Edition date: 202008, Third-Printing- Table of Contents

Capacities and Specifications
Engine Specifications - 6.2L
....................441
Engine Specifications - 6.7L Diesel .......
441
Engine Specifications - 7.3L ....................
442
Motorcraft Parts - 6.2L .............................
443
Motorcraft Parts - 6.7L Diesel ................
445
Motorcraft Parts - 7.3L .............................
446
Bulb Specification Chart ..........................
447
Engine Oil Capacity and Specification - 6.2L ..............................................................
449
Engine Oil Capacity and Specification - 6.7L Diesel .................................................
450
Engine Oil Capacity and Specification - 7.3L ...............................................................
453
Cooling System Capacity and Specification - 6.2L ...............................
455
Cooling System Capacity and Specification - 6.7L Diesel ..................
456
Cooling System Capacity and Specification - 7.3L ................................
456
Fuel Tank Capacity - Diesel ....................
457
Fuel Tank Capacity - Gasoline ..............
458
Air Conditioning System Capacity and Specification - 6.2L ...............................
459
Air Conditioning System Capacity and Specification - 6.7L Diesel ..................
460
Air Conditioning System Capacity and Specification - 7.3L .................................
461
Washer Fluid Specification ......................
461
Diesel Exhaust Fluid Capacity and Specification ............................................
462
Automatic Transmission Fluid Capacity and Specification - Diesel ...................
463
Automatic Transmission Fluid Capacity and Specification - Gasoline .............
463
Brake Fluid Specification .........................
465
Transfer Case Fluid Capacity and Specification ............................................
466
Front Axle Fluid Capacity and Specification ............................................
466
Rear Axle Fluid Capacity and Specification - Diesel ............................
467Rear Axle Fluid Capacity and
Specification - Gasoline ......................
469
Hydraulic Power Steering Fluid Capacity and Specification ....................................
472
Vehicle Identification
Vehicle Identification Number ...............
473
Connected Vehicle
Connected Vehicle Requirements ........
474
Connected Vehicle Limitations .............
474
Connecting the Vehicle to a Mobile Network ......................................................
474
Connecting the Vehicle to a Wi-Fi Network ......................................................
474
Connected Vehicle – Troubleshooting - Vehicles With: Modem ..........................
475
Connected Vehicle – Troubleshooting - Vehicles With: SYNC/SYNC 3 ............
476
Vehicle Wi-Fi Hotspot
Creating a Vehicle Wi-Fi Hotspot .........
478
Changing the Vehicle Wi-Fi Hotspot Name or Password ................................
478
Audio System - Vehicles With: SYNC
General Information ..................................
479
Audio Unit ......................................................
479
Digital Radio ..................................................
481
Satellite Radio .............................................
484
USB Port ........................................................
487
Audio System - Vehicles With: SYNC 3
General Information .................................
488
Audio Unit .....................................................
488
Digital Radio .................................................
489
Satellite Radio .............................................
492
USB Port ........................................................
495
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Super Duty (TFE) Canada/United States of America, enUSA, Edition date: 202008, Third-Printing- Table of Contents

Battery
If it illuminates while driving, it
indicates a malfunction. Switch
off all unnecessary electrical
equipment and have the system checked
immediately.
Brake System Warning Lamp WARNING: Driving your vehicle
with the warning lamp on is dangerous.
A significant decrease in braking
performance may occur. It may take you
longer to stop your vehicle. Have your
vehicle checked as soon as possible.
Driving extended distances with the
parking brake engaged can cause brake
failure and the risk of personal injury.
This lamp is a dual function lamp and
illuminates when:
• You apply the parking brake with the
ignition on.
• Your vehicle has a brake fault or low
brake fluid level, regardless of parking
brake position. If the lamp illuminates while you
are moving, you may have the
parking brake applied. Be sure
that the parking brake is off.
Have your vehicle checked as
soon as possible if the lamp
continues to illuminate.
Note: Indicators vary depending on region.
Blind Spot Monitor
(If Equipped) Illuminates when you switch this
feature off or in conjunction with
a message. See
Blind Spot
Information System (page 254). Check Fuel Cap
(If Equipped) Illuminates when the fuel cap
may not be properly installed.
Continued driving with this light
on may cause the service engine soon
warning indicator to come on.
Check 4X4
(If Equipped) Illuminates with a message
when a four-wheel drive fault is
present. See Using Four-Wheel
Drive
(page 213).
Cruise Control
(If Equipped) Illuminates when you switch this
feature on. See
Switching
Cruise Control On and Off
(page
242).
Diesel Engine Brake
(If Equipped) Illuminates when you switch the
manual engine brake on. See
General Information
(page
223). Illuminates when you switch the
automatic engine brake on. See
General Information
(page
223).
Diesel Exhaust Fluid
(If Equipped) With the key in the on position,
illuminates when the DEF is
contaminated, low or someone
has tampered with the DEF system. See
Selective Catalytic Reductant System
(page
197).
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Super Duty (TFE) Canada/United States of America, enUSA, Edition date: 202008, Third-Printing- Instrument Cluster E270480 E151262 E71340 E171217 E234452 E163176

Action
Message
Your vehicle exhaust system temperature exceeded theintended operating range. If this warning occurs, a tone
sounds, followed by reduced engine power. The engine shuts
down when your vehicle speed is below 3 mph (5 km/h) . Stop the vehicle as soon as safely possible. Have the system checked by an authorized dealer.
Exhaust System Over-
heated Stop Safely NOW
In extremely cold weather, typically below -15°F (-26°C) andif the engine block heater is not utilized, your engine will not
respond to accelerator pedal movement for 30 seconds. This restriction allows your engine to properly circulate the oil to avoid engine damage.
Engine Warming Please
Wait {seconds:00} sec
Your diesel particulate filter is clean.
Exhaust Filter Drive
Complete
Your diesel particulate filter is clean (OCR Only).
Exhaust Filter Cleaned
The manual regeneration process has stopped (OCR Only).
Exhaust Filter Cleaning
Stopped
The distance you can travel before depleting the remaining diesel exhaust fluid.
DEF Level Range: XX mi/
km Refill Now
Your diesel exhaust fluid is nearing empty. Your vehicle ’s top
speed will become limited in the displayed distance. You must
replenish the diesel exhaust fluid to resume normal operation
of your vehicle. See Selective Catalytic Reductant System (page 197).
DEF Level Empty Speed
Limited to XX MPH / km/ h in XX mi/km
Your remaining diesel exhaust fluid has depleted. Upon restart,your vehicle speed is now limited. You must replenish thediesel exhaust fluid to resume normal operation of your
vehicle. See Selective Catalytic Reductant System (page 197
).
DEF Level Empty Speed
Limited to XX MPH/km/ h Upon Restart
The diesel exhaust fluid is empty. You must replenish thediesel exhaust fluid to resume normal operation of your
vehicle. See Selective Catalytic Reductant System (page 197
).
DEF Level Empty Speed
Limited to XX MPH/km/ h
The selective catalytic reduction system detects low exhaustfluid. The engine will eventually enter into an idle only mode.
You must replenish the diesel exhaust fluid to resume normal operation of your vehicle. See
Selective Catalytic
Reductant System (page 197).
DEF Level Empty Engine
Idled Soon
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Super Duty (TFE) Canada/United States of America, enUSA, Edition date: 202008, Third-Printing- Information Displays

Action
Message
A problem exists with the selective catalytic reduction systemcausing your vehicle into an idle-only mode. If the exhaust
fluid is empty, you must replenish the diesel exhaust fluid to resume normal operation of your vehicle. See Selective
Catalytic Reductant System (page 197).
DEF Level Empty Engine
Idled See Manual
The selective catalytic reduction system detects a fault. Thesystem displays your vehicle ’s top speed limit and distance
before limitation. Have the system checked by an authorized dealer.
DEF Fault Speed Limited
to XX MPH/km/h in XX mi/km
The selective catalytic reduction system detects a fault. Uponrestart, your vehicle speed is now limited. Have the system checked by an authorized dealer.
DEF Fault Speed Limited
to XX MPH/km/h Upon Restart
The selective catalytic reduction system detects a fault. Thesystem displays your vehicle ’s top speed limit. Have the
system checked by an authorized dealer.
DEF Fault Speed Limited
to XX MPH/km/h
You must have your vehicle serviced by an authorized dealer.
Ignoring the warning message could lead to reduced drivability and customer expense, including damage to the diesel
particulate filter. Your new vehicle warranty could not cover this damage.
Exhaust Filter Over Limit
Service Now
The water separator has reached a predetermined capacityand needs draining. See
Draining the Fuel Filter Water
Trap (page 361).
Water in Fuel Drain Filter
A low fuel pressure condition has occurred due to cold, low
fuel level or fuel filters need to be changed. See Fuel Quality (page
187).
Fuel Pressure Low
Doors and Locks Action
Message
The door(s) listed is not completely closed.
X Door Ajar
128
Super Duty (TFE) Canada/United States of America, enUSA, Edition date: 202008, Third-Printing- Information Displays

Cold Weather Starting (Flexible
Fuel Vehicles Only)
The starting characteristics of all grades
of E85 ethanol make it unsuitable for use
when ambient temperatures fall below
0°F (-18°C). Consult your fuel distributor
for the availability of winter grade ethanol.
As the outside temperature approaches
freezing, ethanol fuel distributors should
supply winter grade ethanol, the same as
with unleaded gasoline.
If summer grade ethanol is used in cold
weather conditions, 0°F (-18°C), you may
experience increased cranking times, rough
idle or hesitation until the engine has
warmed up.
You may experience a decrease in
performance when the engine is cold when
operating on E85 ethanol.
Do not use starting fluid such as ether in
the air intake system. Such fluid could
cause immediate explosive damage to the
engine and possible personal injury.
If you should experience cold weather
starting problems on E85 ethanol, and
neither an alternative brand of E85 ethanol
nor an engine block heater is available, the
addition of unleaded gasoline to your tank
improves cold starting performance. Your
vehicle is designed to operate on E85
ethanol alone, unleaded gasoline alone, or
any mixture of the two.
If the Engine Fails to Start Using the
Preceding Instructions (Flexible Fuel
Vehicles Only)
1. Press the accelerator pedal down one-third to one-half of its travel, and
then crank the engine.
2. When the engine starts, release the key, then gradually release the
accelerator pedal as the engine speed
increases. If the engine still does not
start, repeat Step 1. Guarding Against Exhaust Fumes WARNING:
Exhaust leaks may
result in entry of harmful and potentially
lethal fumes into the passenger
compartment. If you smell exhaust
fumes inside your vehicle, have your
vehicle inspected immediately. Do not
drive if you smell exhaust fumes.
Important Ventilating Information
If you stop your vehicle and then leave the
engine idling for long periods of time, we
recommend that you do one of the
following:
• Open the windows at least
1 in
(2.5 cm).
• Set your climate control to outside air.
STARTING A DIESEL ENGINE -
6.7L DIESEL
Read all starting instructions carefully
before you start your vehicle.
For temperatures below
32°F (0°C), the
use of the correct grade engine oil is
essential for proper operation. Refer to
engine oil specifications for more
information. See
Engine Oil Capacity
and Specification (page 449).
Your vehicle may have a cold weather
starting strategy that prevents severe
engine damage by assisting in engine
lubrication warm-up. In extremely cold
ambient temperatures, this strategy
activates and prevents the accelerator
pedal from being used for 30 seconds after
you start your vehicle. A message appears
in the information display as your vehicle
warms up. By not allowing the accelerator
pedal to be used, the engine oil is allowed
to properly lubricate the bearings
177
Super Duty (TFE) Canada/United States of America, enUSA, Edition date: 202008, Third-Printing- Starting and Stopping the Engine

Your vehicle has a fuel and water separator
that recirculates fuel from the engine to
help prevent fuel filter clogging. To avoid
engine fuel starvation during cold weather
operation of 32°F (0°C) or below, we
recommend that the fuel level in your tank
should not drop below ¼ full. This helps
prevent air from entering the fuel system
and stalling the engine.
Your vehicle has a selective catalytic
reduction system that uses Diesel Exhaust
Fluid (DEF) to operate properly. You need
to replenish your vehicle ’s DEF at certain
intervals. When filling your vehicle ’s DEF
tank in cold weather, take special care to
prevent damage to the tank. See
Selective Catalytic Reductant System
(page
197).
In cold weather below
32°F (0°C), the
engine may slowly increase to a higher idle
speed if you leave it idling in park (P). As
the engine warms-up, the engine sound
level decreases due to the activation of
PCM-controlled sound reduction features.
If you operate your vehicle in a heavy
snowstorm or blowing snow conditions,
snow and ice can clog the engine air
induction. If this occurs, the engine may
experience a significant reduction in power
output. At the earliest opportunity, clear
all the snow and ice away from inside the
air filter assembly. Remove the air cleaner
cover and the air filter and remove any
snow or ice. Remove any debris, snow or
ice, on the foam filter by brushing the
surface with a soft brush. Once you have
cleared all of the debris, reinstall the air
filter and cover.
Do not use water, solvents, or a hard brush
for cleaning the foam filter. WARNING:
To reduce the risk of
vehicle damage and personal burn
injuries, do not start your engine with the
air cleaner removed and do not remove
it while the engine is running.
In order to operate the engine in
temperatures of 32°F (0°C) or lower, read
the following instructions:
• Make sure that the batteries are of
sufficient size and are fully charged.
Check other electrical components to
make sure they are in optimum
condition.
• Use the proper coolant solution at the
concentration recommended
protecting the engine against damage
from freezing.
• Try to keep the fuel tank full as much
as possible at the end of operation to
prevent condensation in the fuel
system.
• Make sure you use proper cold weather
engine oil and that it is at its proper
level. Also, if necessary, make sure to
follow the engine oil and filter change
schedule found under the Special
operating conditions section listed in
the scheduled maintenance
information.
• At temperatures of
-9°F (-23°C) or
below, it is recommended that you use
an engine block heater to improve cold
engine starting.
• If operating in arctic temperatures of
-20°F (-29°C)
or lower, consult your
truck dealer for information about
special cold weather equipment and
precautions.
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Super Duty (TFE) Canada/United States of America, enUSA, Edition date: 202008, Third-Printing- Starting and Stopping the Engine

EMISSION LAW
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. Failure to
follow these instructions may result in
fire or personal injury.
U.S. federal laws and certain state laws
prohibit removing or rendering inoperative
emission control system components.
Similar federal or provincial laws may
apply in Canada. We do not approve of any
vehicle modification without first
determining applicable laws. Tampering with emissions
control systems including
related sensors or the Diesel
Exhaust Fluid system can result in reduced
engine power and the illumination of the
service engine soon light. Tampering With a Noise Control
System
Federal laws prohibit the following acts:
•
Removal or rendering inoperative by
any person other than for purposes of
maintenance.
• Repair or replacement of any device or
element of the design incorporated into
a new vehicle for the purpose of noise
control prior to its sale or delivery to
the ultimate purchaser or while it is in
use.
• The use of the vehicle after any person
removes or renders inoperative any
device or element of the design.
The U.S. Environmental Protection Agency
may presume to constitute tampering as
follows:
• 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
specifications.
If the engine does not start, runs rough,
experiences a decrease in engine
performance, experiences excess fuel
consumption or produces excessive
exhaust smoke, check for the following:
• A plugged or disconnected air inlet
system hose.
• A plugged 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.
• Incorrect engine oil level.
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Super Duty (TFE) Canada/United States of America, enUSA, Edition date: 202008, Third-Printing- Engine Emission Control