2021 FORD F-150 differential

NORMAL - 4X2
For everyday driving. This mode
is the perfect balance of
excitement, comfort and
convenience. This is the default mode after
each ignition cycle.
The electronic locking differential is
available below 25 mph (40 km/h). See
Switching the Electronic Locking
Differential On and Off
(page 305).
ROCK CRAWL - RAPTOR For off-road driving and
optimum rock-climbing. Rock
crawl mode engages the
electronic locking differential, optimizes
throttle response and adjusts transmission
shift points to provide additional control
of your vehicle.
Four-wheel drive low is the only four-wheel
drive mode available in rock crawl mode.
Comfort is the default steering mode. All
steering modes are available.
Off-road is the default suspension mode.
All suspension modes are available.
Normal is the default exhaust mode. All
exhaust modes are available.
The system tunes the engine and
transmission controls to rock crawl mode.
The system tunes the stability and traction
controls to rock crawl mode.
The electronic locking differential engages
when you select this mode at any speed,
and you can disengage it at any time using
the button. See Switching the Electronic
Locking Differential On and Off
(page
303). ROCK CRAWL - 4X4 For off-road driving and
optimum rock-climbing. Rock
crawl mode engages the
electronic locking differential, optimizes
throttle response and adjusts transmission
shift points to provide additional control
of your vehicle.
Four-wheel drive low is the only four-wheel
drive mode available in rock crawl mode.
The electronic locking differential engages
when you select this mode at any speed,
and you can disengage it at any time using
the button. See Switching the Electronic
Locking Differential On and Off
(page
303).
SLIPPERY - 4X4, VEHICLES WITH:
2-SPEED TORQUE ON DEMAND For less than ideal road
conditions such as snow or ice
covered roads. Use this mode for
crossing terrain where loose or slippery
materials cover a firm surface. Slippery
mode lowers throttle response and
optimizes shifting for slippery surfaces.
Four-wheel drive auto is the default
four-wheel drive mode. Two-wheel drive
high is not available in slippery mode.
The electronic locking differential is
available below
25 mph (40 km/h). See
Switching the Electronic Locking
Differential On and Off
(page 303).
Note: Do not use this mode when driving
on dry pavement. This could cause driveline
bind up and damage the system depending
on the four-wheel drive mode selection.
See
Four-Wheel Drive (page 291).
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SLIPPERY - RAPTOR
For less than ideal road
conditions such as snow or ice
covered roads. Use this mode for
crossing terrain where loose or slippery
materials cover a firm surface. Slippery
mode lowers throttle response and
optimizes shifting for slippery surfaces.
Four-wheel drive auto is the default
four-wheel drive mode. Two-wheel drive
high is not available in slippery mode.
Normal is the default steering, suspension,
and exhaust modes. Off-road steering
mode is not available. All suspension and
exhaust modes are available.
The system tunes the engine and
transmission controls to slippery mode.
The system tunes stability and traction
controls to slippery mode.
The electronic locking differential is
available below 25 mph (40 km/h). See
Switching the Electronic Locking
Differential On and Off
(page 303).
Note: Do not use this mode when driving
on dry pavement. This could cause driveline
bind up and damage the system depending
on the four-wheel drive mode selection.
See
Four-Wheel Drive (page 291).
SLIPPERY - 4X4, VEHICLES WITH:
ELECTRONIC SHIFT-ON-THE-FLY For less than ideal road
conditions such as snow or ice
covered roads. Use this mode for
crossing terrain where loose or slippery
materials cover a firm surface. Slippery
mode lowers throttle response and
optimizes shifting for slippery surfaces.
Four-wheel drive high is the default
four-wheel drive mode. All four-wheel drive
modes are selectable in slippery mode. The electronic locking differential is
available below
25 mph (40 km/h). See
Switching the Electronic Locking
Differential On and Off
(page 303).
Note: Do not use this mode when driving
on dry pavement. This could cause driveline
bind up and damage the system depending
on the four-wheel drive mode selection.
See
Four-Wheel Drive (page 291).
SLIPPERY - 4X2 For less than ideal road
conditions such as snow or ice
covered roads. Use this mode for
crossing terrain where loose or slippery
materials cover a firm surface. Slippery
mode lowers throttle response and
optimizes shifting for slippery surfaces.
The electronic locking differential is
available below
25 mph (40 km/h). See
Switching the Electronic Locking
Differential On and Off
(page 305).
Note: Do not use this mode when driving
on dry pavement. This could cause driveline
bind up and damage the system depending
on the four-wheel drive mode selection.
See
Four-Wheel Drive (page 291).
SPORT - 4X4, VEHICLES WITH: 2-
SPEED TORQUE ON DEMAND For sporty driving with improved
performance handling and
response. This mode increases
accelerator pedal response and provides
a sportier steering feel. The powertrain
system holds onto lower gears longer,
helping your vehicle accelerate faster.
Four-wheel drive auto is the default
four-wheel drive mode. Four-wheel drive
low is not available in sport mode.
The system tunes the steering and
suspension to provide a more connected
and spirited driving experience.
377
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The electronic locking differential is
available below 25 mph (40 km/h). See
Switching the Electronic Locking
Differential On and Off
(page 303).
SPORT - RAPTOR For sporty driving with improved
performance handling and
response. This mode increases
accelerator pedal response and provides
a sportier steering feel. The powertrain
system holds onto lower gears longer,
helping your vehicle accelerate faster.
Two-wheel drive high is the default
four-wheel drive mode. Four-wheel drive
low is not available in sport mode.
Sport is the default steering, suspension,
and exhaust modes. Off-road steering
mode is not available. All suspension and
exhaust modes are available.
The system tunes the engine and
transmission controls to sport mode.
The system tunes the stability and traction
controls to normal mode.
The electronic locking differential is
available below
25 mph (40 km/h). See
Switching the Electronic Locking
Differential On and Off
(page 303).
SPORT - 4X4, VEHICLES WITH:
ELECTRONIC SHIFT-ON-THE-FLY For sporty driving with improved
performance handling and
response. This mode increases
accelerator pedal response and provides
a sportier steering feel. The powertrain
system holds onto lower gears longer,
helping your vehicle accelerate faster.
Two-wheel drive high is the default
four-wheel drive mode. Four-wheel drive
low is not available in sport mode. The system tunes the steering and
suspension to provide a more connected
and spirited driving experience.
The electronic locking differential is
available below
25 mph (40 km/h). See
Switching the Electronic Locking
Differential On and Off
(page 303).
SPORT - 4X2 For sporty driving with improved
performance handling and
response. This mode increases
accelerator pedal response and provides
a sportier steering feel. The powertrain
system holds onto lower gears longer,
helping your vehicle accelerate faster.
The system tunes the steering and
suspension to provide a more connected
and spirited driving experience.
The electronic locking differential is
available below
25 mph (40 km/h). See
Switching the Electronic Locking
Differential On and Off
(page 305).
TOW/HAUL - RAPTOR For improved transmission
operation when towing a trailer
or a heavy load. This mode
moves upshifts to higher engine speeds to
reduce the frequency of transmission
shifting. This mode also provides engine
braking in all forward gears, which slows
your vehicle and assists you in controlling
your vehicle when descending a slope. The
amount of downshift braking provided
varies based on the amount you press the
brake pedal.
All four-wheel drive modes are selectable
when in tow/haul mode. This mode does
not default to a certain four-wheel drive
mode and maintains the previous
selection.
378
F-150 (TFD) Canada/United States of America, enUSA, Edition date: 202104, Second-Printing Drive Mode ControlE347140 E246593 E246593 E347108

Normal is the default steering and exhaust
modes. Off-road steering mode is not
available. All exhaust modes are available.
Sport is the default suspension mode.
Normal suspension mode is available.
Off-road suspension mode is not available.
The system tunes the engine and
transmission controls to tow mode.
The system tunes the stability and traction
controls to normal mode.
The electronic locking differential is
available below 25 mph (40 km/h). See
Switching the Electronic Locking
Differential On and Off
(page 303).
TOW/HAUL - 4X4 For improved transmission
operation when towing a trailer
or a heavy load. This mode
moves upshifts to higher engine speeds to
reduce the frequency of transmission
shifting. This mode also provides engine
braking in all forward gears, which slows
your vehicle and assists you in controlling
your vehicle when descending a slope. The
amount of downshift braking provided
varies based on the amount you press the
brake pedal.
All four-wheel drive modes are selectable
in tow/haul mode. This mode does not
default to a certain four-wheel drive mode
and maintains the previous selection.
The system tunes the steering and
suspension to enhance driving comfort
when towing or carrying heavy loads.
The electronic locking differential is
available below
25 mph (40 km/h). See
Switching the Electronic Locking
Differential On and Off
(page 303). TOW/HAUL - 4X2 For improved transmission
operation when towing a trailer
or a heavy load. This mode
moves upshifts to higher engine speeds to
reduce the frequency of transmission
shifting. This mode also provides engine
braking in all forward gears, which slows
your vehicle and assists you in controlling
your vehicle when descending a slope. The
amount of downshift braking provided
varies based on the amount you press the
brake pedal.
The system tunes the steering and
suspension to enhance driving comfort
when towing or carrying heavy loads.
The electronic locking differential is
available below
25 mph (40 km/h). See
Switching the Electronic Locking
Differential On and Off
(page 305).
TRAIL - 4X2 Trail mode is for off-road driving
on muddy, rutted, soft or uneven
terrain. This mode lowers
throttle response to increase wheel spin
to keep the tires clear and to prevent
getting stuck.
The electronic locking differential is
available below
25 mph (40 km/h). See
Switching the Electronic Locking
Differential On and Off
(page 305).
379
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DRIVING THROUGH WATER
LIMITATIONS - RAPTOR
Maximum Wading
Depth
Model
32 in (810 mm)
All.
When you are driving though water do not
exceed 4 mph (7 km/h).
WATER WADING WARNING:
Do not attempt to
cross a deep, fast flowing body of water.
Failure to follow this instruction could
result in the loss of control of your
vehicle, personal injury or death.
As the water depth increases, you must
reduce your vehicle speed to avoid
potential vehicle damage. •
Always determine the depth before
attempting a water crossing. Never
drive through water that is higher than
the bottom of the wheel hubs.
• Slowly proceed and avoid splashing
water any more than is necessary. •
Be aware that obstacles and debris
may be beneath the water ’s surface.
• Keep the doors fully closed during the
water crossing.
• After driving through water and as soon
as it is safe to do so check the brakes,
horn, lights, and steering wheel to
confirm those systems are functioning
properly.
Note: Engine damage can occur if water
enters the air filter.
OFF-ROAD DRIVING AIDS -
RAPTOR
Selecting an Off-Road Drive Mode
Using the appropriate drive mode increases
your vehicle's control. See
Drive Mode
Control (page 371).
Using Four-Wheel Drive
Your vehicle has a four-wheel drive system
that offers various modes to help you
optimize traction on any off-road surface.
See
Four-Wheel Drive (page 291).
Using the Cameras Off-Road
Use the 360 degree camera to enhance
your off-road experience. See 360 Degree
Camera
(page 342).
Using the Rear Differential Lock
When engaged, the rear differential lock
provides additional traction to your vehicle
by forcing the two rear wheels to turn at
the same speed.
Note: Rear differential lock is only available
when the vehicle is in 4H or 4L. See
Electronic Locking Differential (page 301).
474
F-150 (TFD) Canada/United States of America, enUSA, Edition date: 202104, Second-Printing Driving HintsE310941

Exclusive Use of E85 - Flex Fuel Vehicles Only
If exclusively ran on E85, fill the fuel tank full with regular
unleaded fuel.
Every oil change interval Driver Training/EVOC
Replace engine oil and filter as indicated by the information
display and perform services listed in the extreme usage
scheduled maintenance chart.
As required
Inspect brake pads, rotors, calipers, hoses, and service as
required.
Inspect engine oil level.
Inspect vehicle every day
prior to starting training
Set tire pressure. Refer to driver door placard for cold tire
pressure information.
Inspect tire quality for wear.
Set wheel lug nut torque. The cold wheel lug nut torque
is 150 lb.ft (204 Nm). If wheels are torqued while they are
hot (after 15 minutes of EVOC driving), torque may be
checked to hot wheel lug nut torque of
70 lb.ft (95 Nm).
Proper functioning of safety devices (seat belts, no air bag
lights, etc.)
Front differential/axle fluid. Check front hub / bearing bolt
torque to 130 lb.ft (175 Nm).
25 hours of training use
Rear differential/axle fluid.
100 hours of training use
Change transmission and transfer case fluids.
Annually
Note: Follow base owner guide direction
for 1,000-mile vehicle break-in prior to using
vehicle for training purposes.
Note: Incorporate vehicle cool-down after
hard driving.
Note: Perform Training / EVOC service
according to the extreme usage scheduled
maintenance chart.
Note: Use police responder part numbers
for replacement parts. Engine Idle Hour Meter
Your vehicle may have an idle meter to
indicate how much time the vehicle has
been sitting in park (P) or neutral (N). The
meter is incorporated with the vehicle
odometer. Depressing the odometer-reset
button once displays the trip odometer
(miles [kilometers] following by a "T" for
trip odometer); depressing the
odometer-reset button a second time
displays the idle meter (hours following by
677
F-150 (TFD) Canada/United States of America, enUSA, Edition date: 202104, Second-Printing Scheduled Maintenance

Eco Idle – Troubleshooting.......................251
Eco Idle – Frequently Asked
Questions.......................................................... 251
Electric Parking Brake Audible Warning.........................................................312
Electric Parking Brake..................................311
Electric Parking Brake –
Troubleshooting............................................. 312
Electric Parking Brake – Troubleshooting.........................................312
Electric Parking Brake – Information Messages.......................................................... 313
Electric Parking Brake – Warning Lamps................................................................. 312
Electric Power Steering.............................332 Electric Power Steering Adaptive
Steering............................................................. 332
Electric Power Steering Precautions..........332
Electromagnetic Compatibility
..............763
Electronic Locking Differential................301 Electronic Locking Differential –
Troubleshooting........................................... 306
Electronic Locking Differential Indicators....................................................306
Electronic Locking Differential Precautions..................................................301
Electronic Locking Differential – Troubleshooting.......................................306
Electronic Locking Differential – Information Messages................................ 306
Emergency Call Limitations.......................88
Emergency Call Requirements
..................87
Emergency Call System Data....................32
Emergency Towing
......................................492
Emission Law................................................760
Enabling Apps on an Android Device...........................................................649
Enabling Apps on an iOS Device...........649
Enabling or Disabling Personal Profiles...........................................................651
Enabling Remote Start...............................183
End User License Agreement..................735
Engine Air Filter..............................................515 Changing the Engine Air Filter....................... 516
Checking the Engine Air Filter Restriction Gauge................................................................. 515
Engine Air Filter - Information Messages.......................................................... 518Engine Block Heater...................................240
Engine Block Heater Precautions................240
How Does the Engine Block Heater
Work.................................................................... 241
Using the Engine Block Heater...................... 241
Engine Coolant Temperature Gauge..............................................................172
Engine Oil Capacity and Specification - 2.7L EcoBoost™
........................................587
Engine Oil Capacity and Specification - 3.0L Diesel
..................................................588
Engine Oil Capacity and Specification - 3.3L................................................................590
Engine Oil Capacity and Specification - 3.5L, Hybrid Electric Vehicle
(HEV)............................................................594
Engine Oil Capacity and Specification - 3.5L Ecoboost™........................................592
Engine Oil Capacity and Specification - 5.0L................................................................596
Engine Oil........................................................510 Adding Engine Oil............................................... 510
Checking the Engine Oil Level....................... 510
Engine Oil Capacity and Specification........511
Engine Oil Dipstick Overview......................... 510
Resetting the Engine Oil Change Reminder............................................................ 511
Engine Oil Pressure Gauge........................172
Engine Specifications - 2.7L EcoBoost™.................................................574
Engine Specifications - 3.0L Diesel.......575
Engine Specifications - 3.3L....................576
Engine Specifications - 3.5L, Hybrid Electric Vehicle (HEV)
.............................578
Engine Specifications - 3.5L Ecoboost™..................................................577
Engine Specifications - 5.0L....................579
Entering a Parallel Parking Space.........346
Entering a Perpendicular Parking Space.............................................................347
Evasive Steering Assist.............................402 Evasive Steering Assist Limitations............402
Switching Evasive Steering Assist On and
Off...................................................................... 402
What Is Evasive Steering Assist................... 402
Event Data
........................................................30
Exiting a Parking Space.............................347
Export Unique Options...............................761
774
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