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MC3J 19A321 AC
2021 SUPER DUTY Owner’s Manual
ford.caowner.ford.com
2021 SUPER DUTY Owner’s Manual
March 2021
Third Printing
Litho in U.S.A.
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The information contained in this publication was correct at the time of going to print. In the interest of
continuous development, we reserve the right to change specifications, design or equipment at any time
without notice or obligation. No part of this publication may be reproduced, transmitted, stored in a
retrieval system or translated into any language in any form by any means without our written permission.
Errors and omissions excepted.
© Ford Motor Company 2021
All rights reserved.
Part Number: 202008 20210201134948
California Proposition 65
WARNING: Operating, servicing and
maintaining a passenger vehicle or off-highway
motor vehicle can expose you to chemicals
including engine exhaust, carbon monoxide,
phthalates, and lead, which are known to the
State of California to cause cancer and birth
defects or other reproductive harm. To minimize
exposure, avoid breathing exhaust, do not idle the
engine except as necessary, service your vehicle
in a well-ventilated area and wear gloves or wash
your hands frequently when servicing your vehicle.
For more information go to
www.P65Warnings.ca.gov/passenger-vehicle. WARNING:
Battery posts, terminals and
related accessories contain lead and lead
compounds, chemicals known to the State of
California to cause cancer and reproductive harm.
Wash your hands after handling
.
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Introduction
About This Manual
..........................................9
Symbols Glossary ............................................
9
Data Recording .................................................
11
Perchlorate .......................................................
15
Ford Credit ........................................................
15
Replacement Parts Recommendation ........................................................................\
...
16
Special Notices ...............................................
16
Mobile Communications Equipment ........................................................................\
....
17
Export Unique Options ................................
18
Environment
Protecting the Environment .......................
19
At a Glance
Instrument Panel ..........................................
20
Child Safety
General Information .....................................
22
Installing Child Restraints ..........................
24
Booster Seats .................................................
33
Child Restraint Positioning ........................
35
Child Safety Locks .........................................
37
Seatbelts
Principle of Operation .................................
38
Fastening the Seatbelts .............................
39
Seatbelt Height Adjustment .....................
42
Seatbelt Warning Lamp and Indicator Chime ............................................................
42
Seatbelt Reminder .......................................
43
Child Restraint and Seatbelt Maintenance ...............................................
44
Seatbelt Extensions .....................................
44
Supplementary Restraints System
Principle of Operation .................................
45Driver and Passenger Airbags
..................
46
Side Airbags .....................................................
51
Safety Canopy ™............................................
52
Crash Sensors and Airbag Indicator .......
53
Airbag Disposal ..............................................
54
Keys and Remote Controls
General Information on Radio Frequencies .................................................
55
Remote Control .............................................
55
Replacing a Lost Key or Remote Control ........................................................................\
..
60
MyKey ™
Principle of Operation ..................................
61
Creating a MyKey ...........................................
62
Clearing All MyKeys ......................................
63
Checking MyKey System Status .............
64
Using MyKey With Remote Start Systems ........................................................
64
MyKey – Troubleshooting ..........................
64
Doors and Locks
Locking and Unlocking ...............................
66
Keyless Entry ..................................................
69
Tailgate
Tailgate Lock .....................................................
71
Electronic Tailgate ..........................................
71
Removing the Tailgate .................................
72
Tailgate Step ....................................................
72
Bed Extender ...................................................
73
Security
Passive Anti-Theft System ........................
76
Anti-Theft Alarm ...........................................
76
Power Running Boards
Using Power Running Boards ...................
78
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Steering Wheel
Adjusting the Steering Wheel - Vehicles
With: Power Adjustable Steering
Column .........................................................80
Adjusting the Steering Wheel - Vehicles With: Manual Adjustable Steering
Column ..........................................................
81
Audio Control ...................................................
81
Voice Control ..................................................
82
Cruise Control - Vehicles With: Cruise Control ..........................................................
82
Cruise Control - Vehicles With: Adaptive Cruise Control .............................................
82
Information Display Control ......................
82
Heated Steering Wheel ...............................
82
Horn ....................................................................
83
Adjustable Pedals
Adjusting the Pedals ...................................
84
Wipers and Washers
Windshield Wipers .......................................
85
Autowipers ......................................................
85
Windshield Washers ....................................
86
Lighting
General Information .....................................
87
Lighting Control .............................................
87
Autolamps .......................................................
88
Instrument Lighting Dimmer ....................
88
Daytime Running Lamps - Vehicles With: Configurable Daytime Running Lamps
........................................................................\
..
88
Daytime Running Lamps - Vehicles With: Daytime Running Lamps (DRL) .........
89
Front Fog Lamps ...........................................
89
Direction Indicators ......................................
90
Spot Lamps ....................................................
90
Interior Lamps ................................................
90
Ambient Lighting ............................................
91
Cargo Lamps ....................................................
91Automatic High Beam Control
What Is Automatic High Beam Control
........................................................................\
..
93
Switching Automatic High Beam Control On and Off ...................................................
93
Automatic High Beam Control Indicators ........................................................................\
..
93
Overriding Automatic High Beam Control ........................................................................\
..
93
Windows and Mirrors
Power Windows ............................................
95
Global Opening .............................................
96
Exterior Mirrors ...............................................
96
Interior Mirror ..................................................
99
Sliding Windows ...........................................
99
Sun Visors ......................................................
100
Moonroof .......................................................
100
Instrument Cluster
Gauges .............................................................
102
Warning Lamps and Indicators ..............
105
Audible Warnings and Indicators ..........
109
Information Displays
General Information ....................................
110
Information Messages ................................
121
Remote Start
What Is Remote Start ................................
140
Remote Start Limitations ........................
140
Enabling Remote Start .............................
140
Remotely Starting the Engine ................
140
Extending the Remote Start Duration ........................................................................\
140
Remotely Stopping the Engine ...............
141
Remote Start Remote Control Indicators ........................................................................\
..
141
Remote Start Settings ................................
141
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Climate Control - Vehicles
With: Automatic
Temperature Control
Identifying the Climate Control Unit .....143
Switching Climate Control On and Off ........................................................................\
.
143
Switching Recirculated Air On and Off ........................................................................\
.
143
Switching Air Conditioning On and Off ........................................................................\
.
143
Switching Maximum Defrost On and Off ........................................................................\
.
143
Switching Maximum Cooling On and Off ........................................................................\
.
143
Switching the Heated Wiper Park On and Off .................................................................
144
Switching the Heated Rear Window On and Off ........................................................
144
Switching the Heated Mirrors On and Off ........................................................................\
.
144
Setting the Blower Motor Speed ...........
144
Setting the Temperature ..........................
144
Directing the Flow of Air ............................
145
Auto Mode ......................................................
145
Climate Control – Troubleshooting ......
146
Climate Control - Vehicles With: Manual Temperature
Control
Identifying the Climate Control Unit ......
147
Switching Climate Control On and Off ........................................................................\
.
147
Switching Recirculated Air On and Off ........................................................................\
.
147
Switching Air Conditioning On and Off ........................................................................\
.
147
Switching Maximum Defrost On and Off ........................................................................\
.
147
Switching Maximum Cooling On and Off ........................................................................\
.
147
Switching the Heated Rear Window On and Off ........................................................
148Switching the Heated Mirrors On and Off
........................................................................\
.
148
Setting the Blower Motor Speed ...........
148
Setting the Temperature ..........................
148
Directing the Flow of Air ...........................
148
Climate Control – Troubleshooting ......
149
Interior Air Quality
What Is the Cabin Air Filter ......................
150
Locating the Cabin Air Filter ....................
150
Replacing the Cabin Air Filter .................
150
Seats
Sitting in the Correct Position ..................
151
Head Restraints .............................................
151
Manual Seats ................................................
153
Power Seats ..................................................
154
Memory Function .........................................
157
Rear Seats ......................................................
158
Heated Seats ................................................
160
Ventilated Seats ............................................
161
Rear Occupant Alert System
What is the Rear Occupant Alert System ........................................................................\
.
162
How Does the Rear Occupant Alert System Work .............................................
162
Rear Occupant Alert System Precautions ........................................................................\
.
162
Rear Occupant Alert System Limitations ........................................................................\
.
162
Switching Rear Occupant Alert System On and Off - Vehicles With: SYNC
........................................................................\
.
162
Switching Rear Occupant Alert System On and Off .................................................
163
Rear Occupant Alert System Indicators - Vehicles With: SYNC 3 ........................
163
Rear Occupant Alert System Indicators - Vehicles With: SYNC ...........................
163
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Rear Occupant Alert System Audible
Warnings .....................................................163
Garage Door Opener
Universal Garage Door Opener ..............
164
Auxiliary Power Points
Auxiliary Power Points ...............................
168
Wireless Accessory Charger ....................
169
Storage Compartments
Center Console ...............................................
171
Overhead Console ........................................
171
Under Seat Storage ......................................
171
Starting and Stopping the Engine
General Information ...................................
174
Ignition Switch ..............................................
174
Keyless Starting ............................................
175
Starting a Gasoline Engine - 6.2L/7.3L ........................................................................\
.
175
Starting a Diesel Engine - 6.7L Diesel ........................................................................\
..
177
Switching Off the Engine - 6.7L Diesel ........................................................................\
.
182
Engine Idle Shutdown ................................
182
Engine Block Heater ...................................
182
Fuel and Refueling
Safety Precautions .....................................
184
Fuel Quality - E85 .......................................
185
Fuel Quality - Gasoline .............................
186
Fuel Quality - Diesel ...................................
187
Running Out of Fuel ...................................
189
Refueling - Gasoline ...................................
189
Refueling - Diesel ........................................
190
Fuel Consumption .......................................
193Engine Emission Control
Emission Law
................................................
194
Catalytic Converter .....................................
195
Selective Catalytic Reductant System - Diesel ............................................................
197
Diesel Particulate Filter ............................
202
Transmission
Automatic Transmission ..........................
207
Power Take-Off ............................................
212
Four-Wheel Drive
Using Four-Wheel Drive ............................
213
Rear Axle
Limited Slip Differential .............................
221
Electronic Locking Differential ................
221
Brakes
General Information ...................................
223
Hints on Driving With Anti-Lock Brakes ........................................................................\
225
Parking Brake ................................................
225
Hill Start Assist ............................................
225
Traction Control
Principle of Operation ................................
227
Using Traction Control ...............................
227
Stability Control
Principle of Operation ...............................
228
Using Stability Control ..............................
229
Trail Control
What Is Trail Control ...................................
231
Switching Trail Control On and Off .......
231
Setting the Trail Control Speed ..............
231
Canceling the Set Speed ..........................
231
Trail Control Indicators ...............................
231
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Terrain Control
Principle of Operation
...............................232
Using Hill Descent Control ......................
232
Parking Aids
Principle of Operation ...............................
234
Rear Parking Aid ..........................................
234
Rear View Camera ......................................
235
360 Degree Camera ..................................
238
Cruise Control
What Is Cruise Control ..............................
242
Switching Cruise Control On and Off ........................................................................\
242
Setting the Cruise Control Speed .........
242
Canceling the Set Speed .........................
243
Resuming the Set Speed .........................
243
Cruise Control Indicators .........................
243
Using Adaptive Cruise Control ...............
243
Driving Aids
Driver Alert ....................................................
250
Lane Keeping System ................................
251
Blind Spot Information System ............
254
Cross Traffic Alert .......................................
259
Steering ..........................................................
262
Pre-Collision Assist ....................................
264
Drive Control ................................................
268
Load Carrying
Load Carrying Precautions .......................
271
Locating the Safety Compliance Certification Labels ................................
272
What Is the Gross Axle Weight Rating ........................................................................\
.
272
What Is the Gross Vehicle Weight Rating ........................................................................\
.
272
What Is the Maximum Loaded Trailer Weight .........................................................
272
What Is the Gross Combined Weight Rating ..........................................................
273 Calculating Payload
...................................
274
Calculating the Load Limit ......................
274
Pickup Bed
Pickup Bed Anchor Points ........................
277
Pickup Bed Ramps .....................................
279
Towing
Towing a Trailer ...........................................
282
Trailer Reversing Aids ................................
283
Trailer Sway Control ..................................
300
Recommended Towing Weights ..........
300
Essential Towing Checks .........................
305
Towing the Vehicle on Four Wheels ......
314
Driving Hints
Economical Driving ......................................
317
Off-Road Driving ..........................................
317
Breaking-In ....................................................
320
Driving Through Water ..............................
320
Snow Plowing ...............................................
321
Floor Mats ......................................................
323
Roadside Emergencies
Roadside Assistance .................................
325
Hazard Flashers ..........................................
326
Fuel Shutoff ..................................................
326
Jump Starting the Vehicle ........................
327
Post-Crash Alert System .........................
329
Transporting the Vehicle ..........................
329
Towing Points ..............................................
330
Customer Assistance
Getting the Services You Need ..............
332
In California (U.S. Only) ............................
333
The Better Business Bureau (BBB) Auto Line Program (U.S. Only) ....................
334
Utilizing the Mediation/Arbitration Program (Canada Only) ......................
335
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