cooling FORD SUPER DUTY 2021 Service Manual

Frequent Low-speed Operation, Consistent Heavy Traffic Under 25 mph (40 km/h) or
Long Rush-hour Traffic
Change the engine oil and filter as indicated by the
information display, and perform the services listed in the
scheduled maintenance chart.
As required
Replace the engine-mounted and frame-mounted fuel
filters.
Every 15,000 mi
(24,000 km), six months or
600 engine hours
Inspect the engine and secondary cooling system coolant
concentration (freeze-point protection) and additive
(corrosion inhibitor) strength. If your vehicle has orange-
colored coolant, add coolant additive if necessary.
Every
30,000 mi
(48,000 km) or 1200 engine
hours
Flush and refill the coolant. Do not add coolant additive.
Every
60,000 mi
(96,000 km) or 2400
engine hours
Note: If your vehicle has orange-colored coolant and you add coolant additive, do not
exceed the specified maximum of
50 fl oz (1.4 L) for the engine and 20 fl oz (473 ml) for
the secondary cooling system. Operating the engine with excessive coolant additive may
cause overheating which could lead to severe, permanent engine damage.
Note: After the initial coolant flush and fill at
60,000 mi (96,000 km) or 2400 engine
hours, flush and fill every 45,000 mi (72,000 km) or 1800 engine hours thereafter. Sustained High-speed Driving at Gross Vehicle Weight Rating (Maximum Loaded Weight
for Vehicle Operation)
Change the engine oil and filter as indicated by the
information display, and perform the services listed in the
scheduled maintenance chart.
As required
Replace the engine-mounted and frame-mounted fuel
filters.
Every
15,000 mi
(24,000 km), six months or
600 engine hours
Replace the wheel bearing grease and grease seals if using
non-sealed bearings. (Two-wheel drive vehicles)
Every
30,000 mi
(48,000 km)
579
Super Duty (TFE) Canada/United States of America, enUSA, Edition date: 202008, Second-Printing Scheduled Maintenance

Sustained High-speed Driving at Gross Vehicle Weight Rating (Maximum Loaded Weight
for Vehicle Operation)
Inspect the engine and secondary cooling system coolant
concentration (freeze-point protection) and additive
(corrosion inhibitor) strength. If your vehicle has orange-
colored coolant, add coolant additive if necessary.
Every 30,000 mi
(48,000 km) or 1200 engine
hours
Flush and refill the coolant. Do not add coolant additive.
Every
60,000 mi
(96,000 km) or 2400
engine hours
Note: If your vehicle has orange-colored coolant and you add coolant additive, do not
exceed the specified maximum of 48 fluid ounces (1.4 liters) for the engine and 16 fluid
ounces (473 ml) for the secondary cooling system. Operating the engine with excessive
coolant additive may cause overheating which could lead to severe, permanent engine
damage.
Note: After the initial coolant flush and fill at
60,000 mi (96,000 km) or 2400 engine
hours, flush and fill every 45,000 mi (72,000 km) or 1800 engine hours thereafter. Operating in Sustained Ambient Temperatures Below -9°F (-23°C) or Above 100°F (38°C)
Change the engine oil and filter as indicated by the
information display, and perform the services listed in the
scheduled maintenance chart.
As required
Replace the engine-mounted and frame-mounted fuel
filters.
Every
15,000 mi
(24,000 km), six months or
600 engine hours
Replace the wheel bearing grease and grease seals if using
non-sealed bearings. (Two-wheel drive vehicles)
Every
30,000 mi
(48,000 km) Operating in Dusty or Sandy Conditions (Such as Unpaved or Dusty Roads)
Rotate the tires, inspect the tires for wear and measure
tread depth.1
Every
7,500 mi (12,000 km)
Inspect the brake system pads and rotors.
Inspect the air filter restriction gauge. Replace the filter if
necessary.
Inspect the steering and suspension ball joints and tie rods.
Lubricate any grease fittings.
580
Super Duty (TFE) Canada/United States of America, enUSA, Edition date: 202008, Second-Printing Scheduled Maintenance

Switching Maximum Air Conditioning On
and Off.............................................................. 532
Switching Maximum Defrost On and Off....................................................................... 532
Switching Rear Auto Mode On and Off....................................................................... 533
Switching Recirculated Air On and Off....................................................................... 533
Switching the Air Conditioning On and Off........................................................................\
531
Switching the Climate Controlled Seats On and Off.............................................................. 532
Switching the Climate Control On and Off....................................................................... 532
Switching the Heated Exterior Mirrors On and Off.............................................................. 532
Switching the Heated Rear Window On and Off....................................................................... 532
Switching the Heated Seats On and Off....................................................................... 532
Switching the Heated Steering Wheel On and Off.............................................................. 532
Switching the Heated Windshield On and Off....................................................................... 532
Switching the Rear Climate Controlled Seats On and Off.......................................... 533
Switching the Rear Heated Seats On and Off....................................................................... 533
Switching the Rear Ventilated Seats On and Off.............................................................. 533
Switching the Ventilated Seats On and Off....................................................................... 533
Climate Control.............................................143 Auto Mode............................................................. 145
Climate Control – Troubleshooting.............146
Climate Control – Troubleshooting.........................................146
Climate Control – Frequently Asked
Questions......................................................... 146
Connected Vehicle
......................................474
Connecting the Vehicle to a Mobile
Network............................................................ 474
Connected Vehicle Limitations
...............474
Connected Vehicle Requirements.........474
Connected Vehicle – Troubleshooting - Vehicles With: Modem............................475
Connected Vehicle – Troubleshooting - Vehicles With: SYNC/SYNC 3..............476 Connecting the Vehicle to a Mobile
Network........................................................474
Connecting FordPass to the Modem..........474
Enabling and Disabling the Modem...........474
What Is the Modem.......................................... 474
Connecting the Vehicle to a Wi-Fi Network........................................................474
Coolant Check See: Engine Coolant Check - 6.2L...............364
See: Engine Coolant Check - 6.7L
Diesel................................................................ 368
See: Engine Coolant Check - 7.3L.................371
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
Crash Sensors and Airbag Indicator........53
Creating a MyKey
............................................62
Programming or Changing Configurable
Settings............................................................... 63
Creating a Vehicle Wi-Fi Hotspot..........478 Connecting a Device to the Wi-Fi
Hotspot............................................................. 478
Finding the Wi-Fi Hotspot Name and Password......................................................... 478
Cross Traffic Alert........................................259 Cross Traffic Alert Behavior When Trailer
is Attached....................................................... 261
Cross Traffic Alert Indicator............................ 261
Cross Traffic Alert Information Messages.......................................................... 261
Cross Traffic Alert System Limitations...................................................... 260
Cross Traffic Alert System Sensors............260
Switching the System On and Off...............261
Using Cross Traffic Alert.................................. 259
Cruise Control................................................242
Cruise Control Indicators
..........................243
Cruise Control - Vehicles With: Adaptive Cruise Control
...............................................82
Cruise Control - Vehicles With: Cruise Control.............................................................82
Customer Assistance.................................332
Customer Information
...............................584
Radio Frequency Certification
Labels............................................................... 584
650
Super Duty (TFE) Canada/United States of America, enUSA, Edition date: 202008, Second-Printing Index

D
Data Recording..................................................11
Comfort, Convenience and Entertainment
Data....................................................................... 13
Event Data................................................................ 13
Service Data............................................................ 12
Services That Third Parties Provide...............14
Services That We Provide.................................. 14
Vehicles With a Modem...................................... 14
Vehicles With an Emergency Call System.................................................................. 15
Vehicles With SYNC............................................. 14
Daytime Running Lamps - Vehicles With: Configurable Daytime Running
Lamps.............................................................88
Daytime Running Lamps - Vehicles With: Daytime Running Lamps (DRL)............89
Declaration of Conformity.......................646 Radio Frequency Statement........................ 646
Diesel Exhaust Fluid Capacity and Specification..............................................462
Diesel Particulate Filter.............................202 Oxidation Catalytic Converter and Diesel
Particulate Filter System........................... 202
Regeneration....................................................... 202
Digital Radio...................................................481 HD Radio Reception and Station
Troubleshooting............................................ 483
Directing the Flow of Air.............................145 Directing Air to the Footwell Air
Vents................................................................... 145
Directing Air to the Instrument Panel Air Vents................................................................... 145
Directing Air to the Windshield Air Vents................................................................... 145
Direction Indicators
.......................................90
Doors and Locks.............................................66
Draining the Fuel Filter Water Trap - 6.7L Diesel..............................................................361
Draining the Diesel Fuel Conditioner Module.............................................................. 362
Filter Location..................................................... 362
Drive Control.................................................268 Selectable Drive Modes.................................. 268
Driver Alert.....................................................250 Using Driver Alert............................................... 250Driver and Passenger Airbags...................46
Children and Airbags............................................ 51
Passenger Airbag On and Off Switch .........46
Proper Driver and Front Passenger Seating Adjustment....................................................... 50
Driving Aids....................................................250
Driving Hints....................................................317
Driving Through Water
...............................320
For Vehicles without Tremor Off-Road
Package............................................................ 320
For Vehicles with Tremor Off-Road Package............................................................. 321
DRL See: Daytime Running Lamps - Vehicles With:
Configurable Daytime Running
Lamps................................................................. 88
See: Daytime Running Lamps - Vehicles With: Daytime Running Lamps (DRL)................89
E
Economical Driving
.......................................317
Electromagnetic Compatibility...............618
Electronic Locking Differential.................221 Activating the Electronic Locking
Differential........................................................ 221
Operating ELD With a Spare or Mismatched Tires.................................................................... 222
Electronic Tailgate...........................................71 With the Outside Control Button..................... 71
With the Remote Control................................... 71
Emission Law
.................................................194
Noise Emissions Warranty, Prohibited
Tampering Acts and Maintenance..........195
Tampering With a Noise Control System............................................................... 194
Enabling Remote Start
..............................140
End User License Agreement...................621 VEHICLE SOFTWARE END USER LICENSE
AGREEMENT (EULA) .................................. 621
Engine Block Heater
....................................182
Using the Engine Block Heater...................... 183
Engine Coolant Check - 6.2L..................364 Adding Coolant.................................................. 364
Engine Coolant Temperature Management.................................................. 367
Fail-Safe Cooling............................................... 366
Recycled Coolant.............................................. 365
651
Super Duty (TFE) Canada/United States of America, enUSA, Edition date: 202008, Second-Printing Index

Severe Climates.................................................
365
Engine Coolant Check - 6.7L Diesel............................................................368
Adding Coolant.................................................. 368
Coolant Change................................................... 371
Engine and Secondary Cooling System Refill Procedure............................................. 370
Engine-driven Cooling Fan.............................. 371
Recycled Coolant............................................... 370
Severe Climates................................................... 371
Engine Coolant Check - 7.3L.....................371 Adding Coolant................................................... 372
Coolant Change.................................................. 374
Engine Coolant Temperature Management.................................................. 375
Engine-driven Cooling Fan (Fan Clutch).............................................................. 374
Fail-Safe Cooling................................................ 374
Recycled Coolant............................................... 373
Severe Climates.................................................. 374
Engine Emission Control...........................194
Engine Idle Shutdown.................................182
Engine Immobilizer See: Passive Anti-Theft System..................... 76
Engine Oil Capacity and Specification - 6.2L................................................................449
Alternative Engine Oil for Extremely Cold Climates ........................................................... 450
Engine Oil Capacity and Specification - 6.7L Diesel...................................................450
Alternative Engine Oil for Biodiesel Fuel Blends (B20 Max)........................................ 452
Alternative Engine Oil for Extremely Cold Climates........................................................... 452
Alternative Engine Oil for Severe Duty Service.............................................................. 453
Engine Oil............................................................. 450
Engine Oil Capacity and Specification - 7.3L.................................................................453
Alternative Engine Oil for Extremely Cold Climates........................................................... 454
Engine Oil Check - 6.2L..............................352 Adding Engine Oil.............................................. 353
Engine Oil Check - 6.7L Diesel................354 Adding Engine Oil.............................................. 354
Engine lubrication for severe service operation ......................................................... 355Engine Oil Check - 7.3L..............................355
Adding Engine Oil.............................................. 355
Engine Oil Dipstick - 6.2L..........................352
Engine Oil Dipstick - 6.7L Diesel.............352
Engine Oil Dipstick - 7.3L...........................352
Engine Specifications - 6.2L.....................441 Drivebelt Routing................................................ 441
Engine Specifications - 6.7L Diesel.......441 Drivebelt Routing............................................... 442
Engine Specifications - 7.3L.....................442 Drivebelt Routing............................................... 443
Entertainment................................................521 AM/FM Radio...................................................... 522
Apps....................................................................... 530
Bluetooth Stereo or USB................................ 529
CD........................................................................\
.... 528
HD Radio ™ Information (If
Available)......................................................... 525
SiriusXM® Satellite Radio (If Activated)........................................................ 523
Sources.................................................................. 522
Supported Media Players, Formats and Metadata Information................................ 530
USB Ports............................................................. 530
Environment.....................................................19
Essential Towing Checks..........................305 Before Towing a Trailer..................................... 313
Dynamic Hitching Using the Rear View Camera System............................................ 306
Hitches................................................................... 307
Integrated Trailer Brake Controller...............310
Launching or Retrieving a Boat or Personal Watercraft (PWC)......................................... 314
Safety Chains..................................................... 309
Trailer Brakes...................................................... 309
Trailer Lamps........................................................ 313
Trailer Towing Connector............................... 305
When Towing a Trailer...................................... 313
Event Data Recording See: Data Recording.............................................. 11
Export Unique Options
.................................18
Extending the Remote Start Duration........................................................140
Exterior Mirrors
................................................96
Blind Spot Information System...................... 99
Clearance Lamps ................................................ 98
Direction Indicator Mirrors ............................... 98
Fold-Away Exterior Mirrors............................... 96
652
Super Duty (TFE) Canada/United States of America, enUSA, Edition date: 202008, Second-Printing Index

Sliding Windows............................................99
Power Sliding Back Window........................... 99
Snow Chains See: Using Snow Chains................................. 420
Snow Plowing................................................321
Engine temperature while plowing.............323
Installing the Snowplow.................................. 321
Operating the Vehicle with the Snowplow Attached........................................................... 322
Snowplowing with your Airbag Equipped Vehicle............................................................... 322
Transmission operation while plowing............................................................. 323
Spare Wheel See: Changing a Road Wheel....................... 429
Special Notices
................................................16
New Vehicle Limited Warranty........................ 16
On Board Diagnostics Data Link Connector........................................................... 16
Special Instructions............................................. 16
Using a Slide-In Camper..................................... 17
Using your Vehicle as an Ambulance.............17
Using your Vehicle as a Stationary Power Source................................................................... 17
Using your Vehicle With a Snowplow............17
Special Operating Conditions Scheduled Maintenance...............................................574
Diesel Engine........................................................ 577
Exceptions............................................................ 582
Gasoline Engine.................................................. 574
Speed Control See: Cruise Control............................................ 242
Spot Lamps.....................................................90
Spring U-Bolt Check - F-600.................389 U-bolt Nut Torque............................................. 390
Stability Control
...........................................228
Principle of Operation...................................... 228
Starter Switch See: Ignition Switch............................................ 174
Starting a Diesel Engine - 6.7L Diesel...............................................................177
Automatic Engine Shutdown......................... 179
Cold Weather Operation.................................. 179
Cold Weather Starting...................................... 179
Diesel Engine Fast Start Glow Plug System............................................................... 178
Vehicles with an Ignition Key.......................... 178
Vehicles with Keyless Start............................. 178Starting a Gasoline Engine - 6.2L/
7.3L...................................................................175
Automatic Engine Shutdown......................... 176
Cold Weather Starting (Flexible Fuel Vehicles Only).................................................. 177
Failure to Start..................................................... 176
Guarding Against Exhaust Fumes.................177
Important Ventilating Information................177
Stopping the Engine When Your Vehicle is Moving................................................................ 176
Stopping the Engine When Your Vehicle is Stationary......................................................... 176
Vehicles with an Ignition Key.......................... 175
Vehicles with Keyless Start............................. 176
Starting and Stopping the Engine..........174 General Information........................................... 174
Steering...........................................................262 Adaptive Learning............................................. 263
Adaptive Steering.............................................. 263
Electronic Torque Overlay Steering............262
Hydraulic Power Steering............................... 262
Steering Wheel
...............................................80
Storage Compartments..............................171
Sunroof See: Moonroof..................................................... 100
Sun Visors
.......................................................100
Illuminated Vanity Mirror................................. 100
Supplementary Restraints System.........45 Principle of Operation........................................ 45
Switching Air Conditioning On and Off....................................................................143
Switching Automatic High Beam Control On and Off.....................................................93
Activating the Automatic High Beam Control ................................................................. 93
Switching Climate Control On and Off....................................................................143
Switching Cruise Control On and Off
...................................................................242
Switching Cruise Control Off......................... 242
Switching Cruise Control On......................... 242
Switching Maximum Cooling On and Off....................................................................143
Switching Maximum Defrost On and Off....................................................................143
Switching Off the Engine - 6.7L Diesel..............................................................182
659
Super Duty (TFE) Canada/United States of America, enUSA, Edition date: 202008, Second-Printing Index

Voice Settings......................................................
521
Utilizing the Mediation/Arbitration Program (Canada Only)........................335
V
Vehicle Care
....................................................391
General Information.......................................... 391
Vehicle Identification Number
................473
Locating the Vehicle Identification
Number............................................................. 473
Vehicle Identification Number Overview........................................................... 473
Vehicle Identification
..................................473
Vehicle Identification Number...................... 473
Vehicle Storage
............................................399
Body....................................................................... 399
Brakes................................................................... 400
Cooling system.................................................. 400
Disconnecting Your 12 Volt Battery............400
Engine................................................................... 400
Fuel system......................................................... 400
General.................................................................. 399
Miscellaneous.................................................... 400
Removing Vehicle From Storage................400
Tires....................................................................... 400
Vehicle Wi-Fi Hotspot
................................478
Ventilated Seats............................................161
Ventilation See: Climate Control - Vehicles With:
Automatic Temperature Control.............143
See: Climate Control - Vehicles With: Manual Temperature Control.................................... 147
Voice Control
...................................................82
W
Warning Lamps and Indicators...............105 Adaptive Cruise Control................................... 105
Adaptive Steering............................................... 105
Anti-Lock Braking System.............................. 105
Automatic High Beam...................................... 105
Battery.................................................................... 106
Blind Spot Monitor............................................ 106
Brake System Warning Lamp........................ 106
Check 4X4............................................................ 106
Check Fuel Cap................................................... 106
Cruise Control...................................................... 106Diesel Engine Brake...........................................
106
Diesel Exhaust Fluid.......................................... 106
Direction Indicator.............................................. 107
Door Ajar................................................................ 107
Electronic Locking Differential....................... 107
Engine Coolant Temperature......................... 107
Engine Oil............................................................... 107
Fasten Seatbelt................................................... 107
Four-Wheel Drive Indicators.......................... 109
Front Airbag.......................................................... 107
Front Fog Lamps................................................. 107
High Beam............................................................. 107
Hill Descent........................................................... 107
Low Fuel Level..................................................... 107
Low Tire Pressure Warning.............................. 107
Powertrain Malfunction/Reduced Power/Electronic Throttle Control.........108
Service Engine Soon......................................... 108
Stability Control.................................................. 108
Stability Control Off.......................................... 108
Tailgate Ajar......................................................... 108
Transmission Tow/Haul................................... 108
Wait To Start........................................................ 108
Water In Fuel........................................................ 108
Washer Fluid Check....................................382
Washer Fluid Specification.......................461
Washers See: Cleaning the Exterior.............................. 392
See: Wipers and Washers................................. 85
Waxing.............................................................393
What Is Automatic High Beam Control............................................................93
What Is Cruise Control...............................242 Requirements...................................................... 242
What Is Remote Start.................................140
What Is the Cabin Air Filter.......................150
What Is the Gross Axle Weight Rating.............................................................272
GAWR (Gross Axle Weight Rating).............272
What Is the Gross Combined Weight Rating.............................................................273
What Is the Gross Vehicle Weight Rating.............................................................272
What Is the Maximum Loaded Trailer Weight...........................................................272
What is the Rear Occupant Alert System...........................................................162
What Is Trail Control....................................231
662
Super Duty (TFE) Canada/United States of America, enUSA, Edition date: 202008, Second-Printing Index