2021 FORD F-150 hood open

After operating your vehicle during heavy
snowfall or extreme rain, do the following:
•
Snow: At the earliest opportunity, open
the hood and clear any snow and ice
from the air filter housing inlet and
reset the air filter restriction gauge.
• Extreme rain: The air filter element
dries out after approximately 15– 30
minutes of driving at highway speeds.
At the earliest opportunity, open the
hood and reset the air filter restriction
gauge.
CHANGING THE ENGINE AIR
FILTER - DIESEL 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.
Change the air filter element at the correct
service interval. See
Scheduled
Maintenance (page 664).
Use the correct specification air filter
element. See
Motorcraft Parts (page
581).
Note: Failure to use the correct air filter
element may result in severe engine
damage. Resulting component damage
may not be covered by the vehicle Warranty. 1. Release the clips that secure the air
filter housing cover. Lift and rotate the
air filter housing cover. 2.
Remove the air filter element from the
air filter housing.
3. To install, reverse the removal procedure.
4. After installing a new air filter element,
reset the air filter restriction gauge by
pressing the reset button. See
Checking the Engine Air Filter
Restriction Gauge
(page 515).
516
F-150 (TFD) Canada/United States of America, enUSA, Edition date: 202104, Second-Printing MaintenanceE254171 E254172

Note:
To calibrate the steering angle
sensor, drive the vehicle above 30 mph
(50 km/h) for a minimum of 1.2 mi (2 km).
Make sure to drive straight ahead for a
minimum of 30 seconds. Several vehicle
functions are disabled and a warning light
could appear until the sensor is calibrated.
Battery Management System
The battery management system monitors
battery conditions and takes actions to
extend battery life. If excessive battery
drain is detected, the system temporarily
disables some of the following features:
• Heated rear window.
• Heated seats.
• Climate control.
• Heated steering wheel.
• Audio unit.
• Navigation system.
A message may appear in the information
display to alert you that battery protection
actions are active.
After battery replacement, or in some
cases after charging the battery with an
external charger, the battery management
system requires eight hours of vehicle sleep
time to relearn the battery state of charge.
During this time your vehicle must remain
fully locked with the ignition off.
Note: If you add electrical accessories or
components to the vehicle, it may adversely
affect battery performance and durability.
This may also affect the performance of
other electrical systems in the vehicle.
Battery Disposal Make sure that you dispose of
old batteries in an
environmentally friendly way.
Seek advice from your local authority
about recycling old batteries. ADJUSTING THE HEADLAMPS
Vertical Aim Adjustment
The headlamps on your vehicle are
properly aimed at the assembly plant. If
your vehicle has been in an accident,
contact an authorized dealer to check and
realign your headlamps.
Headlamp Aiming Target
8 feet (2.4 m).
A
Center height of lamp to ground.
B
25 feet (7.6 m).
C
Horizontal reference line.
D
1. Park your vehicle directly in front of a wall or screen on a level surface,
approximately
25 ft (7.6 m) away.
2. Measure the height from the center of your headlamp, indicated by a 3
millimeter circle on the lens, to the
ground and mark an
8 ft (2.4 m)
horizontal reference line on the vertical
wall or screen at this height, a piece of
masking tape works well.
3. Switch on the low beam headlamps to
illuminate the wall or screen and open
the hood. Cover one of the headlamps
so no light hits the wall.
521
F-150 (TFD) Canada/United States of America, enUSA, Edition date: 202104, Second-Printing MaintenanceE107998 E142592

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.
• Incorrect fuel for climatic conditions.
• Incorrect engine oil viscosity for
climactic conditions.
Note: Some vehicles have a lifetime fuel
filter that is integrated with the fuel tank.
Regular maintenance or replacement is not
needed.
Note: If these checks do not help you
correct the concern, have your vehicle
checked as soon as possible.
Noise Emissions Warranty,
Prohibited Tampering Acts and
Maintenance
On January 1, 1978, Federal regulation
became effective governing the noise
emission on trucks over 10,000 lb
(4,536 kg) Gross Vehicle Weight Rating
(GVWR). The preceding statements
concerning prohibited tampering acts and
maintenance, and the noise warranty
found in the Warranty Guide, are
applicable to complete chassis cabs over
10,000 lb (4,536 kg)
GVWR.
EXPORT UNIQUE OPTIONS
For your particular global region, your
vehicle may be equipped with features and
options that are different from the features
and options that are described in this
Owner ’s Manual. A market unique
supplement may be supplied that
complements this book. By referring to the
market unique supplement, if provided,
you can properly identify those features,
recommendations and specifications that
are unique to your vehicle. This Owner ’s
761
F-150 (TFD) Canada/United States of America, enUSA, Edition date: 202104, Second-Printing Customer Information

Blind Spot Information System.............389
Blind Spot Information System –
Troubleshooting............................................ 392
Blind Spot Information System With Trailer Coverage.......................................................... 390
Blind Spot Information System Indicators.....................................................392
Blind Spot Information System Limitations..................................................389
Blind Spot Information System Precautions................................................389
Blind Spot Information System Requirements............................................389
Blind Spot Information System – Troubleshooting........................................392
Blind Spot Information System – Information Messages................................ 392
Blind Spot Information System With Trailer Coverage........................................390
Blind Spot Information System With Trailer
Coverage Limitations.................................. 390
Selecting a Trailer.............................................. 392
Setting a Trailer Length.................................... 391
What Is Blind Spot Information System with Trailer Coverage............................................ 390
BlueCruise Alerts
.........................................368
BlueCruise Automatic Cancellation...............................................368
BlueCruise......................................................365 BlueCruise – Troubleshooting......................369
BlueCruise Indicators
.................................368
BlueCruise Limitations..............................366
BlueCruise Precautions
.............................365
BlueCruise Requirements........................366
BlueCruise Settings.....................................367
BlueCruise – Troubleshooting................369 BlueCruise – Information Messages..........369
Bluetooth®....................................................648
Body Control Module Fuse Box.............499 Accessing the Body Control Module Fuse
Box..................................................................... 499
Identifying the Fuses in the Body Control Module Fuse Box.......................................... 499
Locating the Body Control Module Fuse Box..................................................................... 499
Bonnet Lock See: Opening and Closing the Hood..........503
Booster Seats
.................................................60 Brake Fluid Specification.........................309
Brake Over Accelerator.............................308
Brake Over Accelerator - Raptor...........308
Brake Precautions
.......................................308
Brakes..............................................................308 Anti-Lock Braking System............................. 308
Brakes – Troubleshooting............................... 310
Brakes – Troubleshooting.........................310 Brakes – Frequently Asked
Questions......................................................... 310
Brakes – Warning Lamps................................ 310
Breaking-In.....................................................476
C
Calculating Payload
.....................................415
Calculating the Load Limit........................415
Canceling the Set Speed...........................351
Canceling the Set Speed - Raptor........324
Capacities and Specifications................574
Catalytic Converter......................................279 Catalytic Converter –
Troubleshooting............................................ 279
Catalytic Converter Precautions............279
Catalytic Converter – Troubleshooting........................................279
C

atalytic Converter – Warning
Lamps................................................................ 279
Center Console Work Surface.................228 C

enter Console Work Surface –
Troubleshooting............................................ 230
Center Console Work Surface – Troubleshooting........................................230
Center Console Work Surface – Information Messages......................................................... 230
Center Display Limitations.......................637
Center Display Overview
...........................637
Center Display Precautions......................637
Changing a Flat Tire...................................566
Changing a Road Wheel...........................566
Changing the 12V Battery..........................519
Changing the Fuel Filter - Diesel............519
Changing the Fuel Filter - Gasoline.......519
Changing the Remote Control Battery - Police Responder.........................................91
Changing the Remote Control Battery - Vehicles With: Flip Key..............................94
770
F-150 (TFD) Canada/United States of America, enUSA, Edition date: 202104, Second-Printing Index

Four-Wheel Drive –
Troubleshooting........................................297
Four-Wheel Drive – Information Messages......................................................... 297
Four-Wheel Drive – Warning Lamps..........297
Front Axle Fluid Capacity and Specification - 4x4...................................616
Front Exterior...................................................43
Front Exterior - Police Responder............45
Front Exterior - Raptor.................................44
Front Parking Aid.........................................335 Front Parking Aid Audible Warnings...........336
Front Parking Aid Limitations........................ 335
Locating the Front Parking Aid Sensors............................................................. 336
What is the Front Parking Aid....................... 335
Front Passenger Sensing System............76 Front Passenger Sensing System
Indicators............................................................ 78
Front Passenger Sensing System Precautions........................................................ 78
How Does the Front Passenger Sensing System Work..................................................... 76
What Is the Front Passenger Sensing System................................................................. 76
Front Seat Precautions..............................195
Front Seats.....................................................195 Heated Seats....................................................... 202
Manual Seats....................................................... 196
Massage Seats.................................................... 201
Power Seats......................................................... 198
Ventilated Seats................................................. 203
Fuel and Refueling
......................................255
Fuel and Refueling –
Troubleshooting............................................ 267
Fuel Quality.......................................................... 256
Refueling................................................................ 261
Running Out of Fuel......................................... 260
Fuel and Refueling Precautions.............255
Fuel and Refueling – Troubleshooting........................................267
Fuel and Refueling – Information Messages..........................................................267
Fuel and Refueling – Warning Lamps................................................................ 267
Fuel Gauge
........................................................171
Fuel Gauge Limitations..................................... 172
Locating the Fuel Filler Door........................... 172What Is Distance to Empty..............................
172
What Is the Fuel Gauge..................................... 171
What Is the Low Fuel Reminder..................... 172
Fuel Quality
...................................................256
Selecting the Correct Fuel.............................. 256
Selecting the Correct Fuel for Cold Weather............................................................ 257
Switching Between E85 and Gasoline........................................................... 260
Fuel Tank Capacity - Diesel
....................604
Fuel Tank Capacity - Excluding: Hybrid Electric Vehicle (HEV)............................266
Fuel Tank Capacity - Gasoline, Excluding: Hybrid Electric Vehicle (HEV)
.............603
Fuel Tank Capacity - Gasoline, Hybrid Electric Vehicle (HEV)............................605
Fuel Tank Capacity - Hybrid Electric Vehicle (HEV)
.............................................267
Fuel Tank Capacity - Raptor...................606
Fuse Precautions
.........................................493
Fuses................................................................493
Body Control Module Fuse Box................... 499
Fuses – Troubleshooting................................ 502
Under Hood Fuse Box...................................... 493
Fuses – Troubleshooting..........................502 Fuses – Frequently Asked Questions........502
G
Garage Door Opener...................................210
Garage Door Opener Limitations...........210
Garage Door Opener Precautions..........210
Garage Door Opener Radio Frequencies..................................................213
General Maintenance Information.......664
Glare Free Lighting
.......................................155
Glare Free Lighting Indicators........................ 156
Glare Free Lighting Limitations..................... 156
Glare Free Lighting Precautions....................155
Glare Free Lighting Requirements................155
How Does Glare Free Lighting Work............155
Overriding Glare Free Lighting....................... 156
Switching Glare Free Lighting On and Off....................................................................... 156
Glare Free Lighting – Troubleshooting.........................................157
Glare Free Lighting – Information Messages........................................................... 157
776
F-150 (TFD) Canada/United States of America, enUSA, Edition date: 202104, Second-Printing Index

Glasses Holder..............................................235
Locating the Glasses Holder.......................... 235
Glossary of Tire Terminology..................548
Glove Compartment...................................232
Locking the Glove Compartment................232
Opening the Glove Compartment...............232
H
Headlamp Adjusting See: Adjusting the Headlamps...................... 521
Headlamps......................................................147 Headlamp Indicators......................................... 147
Using the High Beam Headlamps................147
Headlamps – Troubleshooting...............148 Headlamps – Frequently Asked
Questions......................................................... 148
Heated Seats
................................................202
Heated Seat Precautions............................... 202
Switching the Heated Seats On and Off...................................................................... 202
Heating See: Climate Control - Vehicles With:
Automatic Temperature Control.............186
See: Climate Control - Vehicles With: Manual Temperature Control..................................... 191
High Voltage Battery..................................280
High Voltage Battery Precautions
.........280
High Voltage Battery Vehicle Precautions - Hybrid Electric Vehicle
(HEV)
............................................................484
Hill Descent Control...................................330
Hill Descent Control –
Troubleshooting............................................. 331
Hill Descent Control Indicator
................330
Hill Descent Control Precautions..........330
Hill Descent Control – Troubleshooting.........................................331
Hill Descent Control – Information Messages.......................................................... 331
Hill Start Assist...............................................317 Hill Start Assist – Troubleshooting..............317
Hill Start Assist Precautions.....................317
Hill Start Assist – Troubleshooting
........317
Hill Start Assist – Information
Messages........................................................... 317Hitches.............................................................424
Hooking Up a Trailer Using a
Weight-Distributing Hitch......................... 424
Hood Lock See: Opening and Closing the Hood..........503
Horn....................................................................141
How Does 911 Assist Work..........................87
How Does Active Park Assist Work..............................................................346
How Does Adaptive Cruise Control With Stop and Go Work....................................352
How Does a Hybrid Electric Vehicle Work..............................................................249
How Does Auto Hold Work.......................318
How Does Blind Spot Information System Work
..............................................389
How Does BlueCruise Work.....................365
How Does Cross Traffic Alert Work..............................................................393
How Does Drive Mode Control Work................................................................371
How Does Drive Mode Control Work - Raptor.............................................................371
How Does Driver Alert Work....................407
How Does Easy Entry and Exit Work.................................................................112
How Does Four-Wheel Drive Work
........291
How Does Four-Wheel Drive Work - Raptor
............................................................291
How Does Hill Descent Control Work..............................................................330
How Does Hill Start Assist Work
.............317
How Does On-Board Scale Work..........444
How Does Pre-Collision Assist Work
..............................................................396
How Does Reverse Braking Assist Work...............................................................314
How Does Smart Hitch Work..................442
How Does Speed Sign Recognition Work
..............................................................409
How Does Stability Control Work...........321
How Does the 360 Degree Camera Work...............................................................342
How Does the Diesel Particulate Filter Work..............................................................268
How Does the Electronic Locking Differential Work
.......................................301
777
F-150 (TFD) Canada/United States of America, enUSA, Edition date: 202104, Second-Printing Index

Moving the Seat Backward and
Forward.............................................................. 197
Removing the Head Restraint........................ 197
Unfolding the Seats.......................................... 205
Massage Seats..............................................201
Adjusting the Massage Seat
Settings............................................................ 202
Massage Seat Limitations............................... 201
Memory Function........................................209
Memory Function Precautions...............209
Mislock.............................................................105 Mislock Limitations............................................ 105
Switching Mislock On and Off.......................105
What Is Mislock................................................... 105
Mobile Communications Equipment...................................................735
Mobile Device Data........................................32
Moonroof Bounce-Back
............................168
Overriding Moonroof Bounce-Back............168
What Is Moonroof Bounce-Back.................. 168
Moonroof.........................................................167 Moonroof Bounce-Back.................................. 168
Motorcraft Parts - 2.7L EcoBoost™................................................580
Motorcraft Parts - 3.0L Diesel.................581
Motorcraft Parts - 3.3L
..............................582
Motorcraft Parts - 3.5L, Hybrid Electric Vehicle (HEV)............................................585
Motorcraft Parts - 3.5L Ecoboost™, Raptor...........................................................584
Motorcraft Parts - 3.5L Ecoboost™.................................................583
Motorcraft Parts - 5.0L.............................586
Muting the Audio..........................................627
MyKey Settings...............................................98 Configurable MyKey Settings.......................... 98
Non-Configurable MyKey Settings................98
MyKey – Troubleshooting..........................101 MyKey – Frequently Asked
Questions......................................................... 103
MyKey – Information Messages.................... 101
MyKey ™
............................................................98
MyKey Settings..................................................... 98
MyKey – Troubleshooting................................ 101
N
Navigation Map Updates
..........................653 Navigation......................................................653
Adjusting the Map............................................. 653
Live Traffic............................................................ 653
Route Guidance................................................. 654
Setting a Destination....................................... 653
Waypoints............................................................ 654
Normal Scheduled Maintenance
..........667
O
Off-Road Driving
..........................................470
After Driving Your Vehicle Off-Road...........475
Basic Off-Road Driving Techniques............470
Driving Off-Road................................................. 471
Driving Through Water Limitations.............474
Driving Your Vehicle at High Speeds...........473
Off-Road Driving Aids...................................... 474
Off-Road Driving Precautions.......................470
Water Wading...................................................... 474
What Is Off-Road Driving............................... 470
On-Board Scale Limitations...................444
On-Board Scale
...........................................444
Opening and Closing the Flip Key...........90
Opening and Closing the Hood..............503
Opening and Closing the Moonroof......167
Opening and Closing the Sliding Windows.......................................................163
Opening and Closing the Sun Shade.............................................................167
Opening and Closing the Windows.......162
Opening the Tailgate
....................................113
Opening the Tailgate From Inside Your
Vehicle................................................................ 119
Opening the Tailgate From Outside Your Vehicle................................................................. 113
Opening the Tailgate Using the Remote Control................................................................ 119
Operating the Doors From Inside Your Vehicle...........................................................104
Individually Unlocking and Locking the Doors Using the Locking Button..............104
Opening the Doors From Inside Your Vehicle............................................................... 105
Operating the Doors From Outside Your Vehicle...........................................................104
Unlocking and Locking the Doors Using the Key Blade.......................................................... 104
781
F-150 (TFD) Canada/United States of America, enUSA, Edition date: 202104, Second-Printing Index