2021 FORD F-150 differential

Automatic Transmission
Automatic Transmission Precautions
........................................................................\
.281
Automatic Transmission Positions .......
281
Shifting Your Vehicle Into Gear ..............
282
Shifting Your Vehicle Into Gear - Raptor ........................................................................\
282
Shifting Your Vehicle Into Gear - Police Responder .................................................
283
Manually Shifting Gears ...........................
283
Temporary Neutral Mode ........................
285
Using Progressive Range Selection ......
286
Automatic Return to Park (P) ...............
286
Stowing the Selector Lever - Vehicles With: Console Shift ................................
287
Stowing the Selector Lever - Raptor ........................................................................\
287
Manual Park Release ................................
288
Four-Wheel Drive
How Does Four-Wheel Drive Work - Raptor ..........................................................
291
How Does Four-Wheel Drive Work .......
291
Four-Wheel Drive Precautions ..............
292
Four-Wheel Drive Limitations ................
292
Selecting a Four-Wheel Drive Mode - Raptor .........................................................
293
Selecting a Four-Wheel Drive Mode ....
294
Four-Wheel Drive Modes .........................
295
Four-Wheel Drive Indicators ..................
296
Four-Wheel Drive – Troubleshooting ........................................................................\
297
Electronic Locking Differential
What Is the Electronic Locking Differential .................................................
301
How Does the Electronic Locking Differential Work - Raptor ...................
301
How Does the Electronic Locking Differential Work .....................................
301Electronic Locking Differential
Precautions ...............................................
301
Switching the Electronic Locking Differential On and Off - Raptor .......
302
Switching the Electronic Locking Differential On and Off - 4x4 .............
303
Switching the Electronic Locking Differential On and Off - 4x2 .............
305
Electronic Locking Differential Indicators .......................................................................
306
Electronic Locking Differential – Troubleshooting .....................................
306
Brakes
Brake Precautions ......................................
308
Anti-Lock Braking System ......................
308
Brake Over Accelerator - Raptor ..........
308
Brake Over Accelerator ............................
308
Locating the Brake Fluid Reservoir ......
308
Checking the Brake Fluid .........................
309
Brake Fluid Specification ........................
309
Brakes – Troubleshooting ........................
310
Electric Parking Brake
What Is the Electric Parking Brake .........
311
Applying the Electric Parking Brake .......
311
Applying the Electric Parking Brake in an Emergency ..................................................
311
Manually Releasing the Electric Parking Brake ..............................................................
311
Automatically Releasing the Electric Parking Brake .............................................
311
Electric Parking Brake Audible Warning ........................................................................\
.
312
Releasing the Electric Parking Brake if the Vehicle Battery Has Run Out of
Charge ..........................................................
312
Electric Parking Brake – Troubleshooting ........................................................................\
.
312
Reverse Braking Assist
What Is Reverse Braking Assist ..............
314
9
F-150 (TFD) Canada/United States of America, enUSA, Edition date: 202104, Second-Printing Table of Contents

UNIQUE FEATURES
Powertrain
•
3.5L EcoBoost engine.
• 10R80 10-speed automatic
transmission with paddle shifters and
water to air transmission cooler.
• Torque On Demand™ 2-speed transfer
case with 4 Hi-Loc.
• Rear differential capable of locking in
4A, 4H and 4L.
• 35 spline rear axle shafts for increased
capability.
• 4.10 front and rear axle ratios and
optional Torsen front differential.
• Equal length dual exhaust with X-pipe
and active exhaust valves, 4.5 in
(114.3 mm) exhaust tips.
• Charge air cooler fan assembly for
greater cooling at low speeds.
Chassis
• Cast aluminum lower control arms.
• Forged steel upper control arms.
• Fox Factory 3.1 Live Valve Internal
Bypass front shocks.
• Fox Factory 3.1 Live Valve Internal
Bypass Remote Reservoir rear shocks.
• 24 inch triple rate rear springs.
• Unique underbody shields.
• Heavy duty fully boxed frame.
• Unique 5 link rear suspension.
• Unique cast aluminum knuckle.
• Ride height sensors at each corner.
• Off-road tuned stabilizer bar and
jounce bumpers. Exterior
•
Optional off-road driving lights.
• Modified rear bumper with integrated
rear tow hooks.
• Underbody shields plus front tow
hooks.
• Hood with functional air extractors.
• Front fenders with functional air
extractors.
• Front and rear LED marker lamps.
• 17 x 8.5 aluminum wheels.
• Optional 17 x 8.5 forged beadlock
compatible wheels.
• LT 315/70R17 BF Goodrich All Terrain
TA KO2 tires.
• Optional 37x12.5R17 LT BF Goodrich All
Terrain TA KO2 tires.
Interior
• Unique terrain-mode and trail control
functionality plus six auxiliary switches.
• Optional premium leather and suede
seats.
33
F-150 (TFD) Canada/United States of America, enUSA, Edition date: 202104, Second-Printing At a Glance - Raptor

BlueCruise
See BlueCruise (page 365).
Cruise Control See Cruise Control (page 350).
Electronic Locking Differential See
Electronic Locking
Differential (page 301).
Four-Wheel Drive See
Four-Wheel Drive (page
291).
Note: Some indicators appear different
depending on vehicle options.
Front Airbag See
Airbags (page 72).
Front Fog Lamp See
Switching the Front Fog
Lamps On and Off (page 150).
High Beam See
Using the High Beam
Headlamps (page 147). Hill Descent See Hill Descent Control
(page
330).
Lamps On See
Exterior Lighting Control
(page 147).
Ready to Drive See
Hybrid Electric Vehicle
Information (page 249).
Reverse Brake Assist See
Reverse Braking Assist
(page 314).
Stability Control and Traction
Control See
Traction Control (page
319). See Stability Control
(page 321).
Turn Signal Lamps See Switching the Turn Signal
Lamps On and Off (page 149).
Tow Haul See
Towing a Trailer (page 428).
Wait to Start See
Starting a Diesel Engine
(page 238).
175
F-150 (TFD) Canada/United States of America, enUSA, Edition date: 202104, Second-Printing Instrument ClusterE297977 E332905 E325779 E181778 E181781 E181780 E181779 E67017 E163171 E224090 E293490 E138639 E130458 E246592

INSTRUMENT CLUSTER
INDICATORS - POLICE
RESPONDER
Active Drive Assist
See BlueCruise (page 365).
Adaptive Cruise Control See
Adaptive Cruise Control
(page 352).
Automatic High Beam See
Automatic High Beam
Control Indicators (page 154).
Automatic Regen Control Off See
Diesel Particulate Filter
(page 268).
Auto Hold Active See
Auto Hold (page 318).
Auto Hold Unavailable See
Auto Hold (page 318).
Auto-Start-Stop See
Auto-Start-Stop (page
252).
Blind Spot Monitor See
Blind Spot Information
System (page 389). Cruise Control See Cruise Control (page 350).
Electronic Locking Differential See
Electronic Locking
Differential (page 301).
Four-Wheel Drive See
Four-Wheel Drive (page
291).
Note: Some indicators appear different
depending on vehicle options.
Front Airbag See
Airbags (page 72).
Front Fog Lamp See
Switching the Front Fog
Lamps On and Off (page 150).
High Beam See
Using the High Beam
Headlamps (page 147).
Hill Descent See Hill Descent Control
(page
330).
176
F-150 (TFD) Canada/United States of America, enUSA, Edition date: 202104, Second-Printing Instrument ClusterE297977 E144524 E252868 E323448 E323449 E151262 E332905 E325779 E181778 E181781 E181780 E181779 E67017 E163171

WHAT IS THE ELECTRONIC
LOCKING DIFFERENTIAL
The electronic locking differential is a
device housed in the rear axle, and can
provide additional traction when needed.
HOW DOES THE ELECTRONIC
LOCKING DIFFERENTIAL
WORK - RAPTOR
You can activate the differential
electronically and shift it on the fly within
the operating speed range. The electronic
differential disengages when the vehicle
speed exceeds a set value and it reengages
when the vehicle speed goes below a set
value depending on drive mode. See
Switching the Electronic Locking
Differential On and Off (page 303). The
electronic locking differential is for use in
mud, rocks, sand, or any off-road condition
where you need maximum traction.
Note:
The electronic locking differential can
activate or deactivate automatically based
on speed, four-wheel drive mode, and drive
mode selection. See Switching the
Electronic Locking Differential On and
Off
(page 303).
Note: The electronic locking differential is
for off-road use only and is not for use on
dry pavement. Using the electronic locking
differential on dry pavement results in
increased tire wear, noise and vibration.
Note: The electronic locking differential is
not available in 2H. HOW DOES THE ELECTRONIC
LOCKING DIFFERENTIAL
WORK
You can activate the differential
electronically and shift it on the fly within
the operating speed range. The electronic
differential disengages when the vehicle
speed exceeds a set value, and reengages
when the vehicle speed goes below a set
value. See
Switching the Electronic
Locking Differential On and Off (page
303). It also engages based on certain
selected drive modes. See Selecting a
Drive Mode (page 373). The electronic
locking differential is for use in mud, rocks,
sand, or any off-road condition where you
need maximum traction.
Note: The electronic locking differential can
activate or deactivate automatically based
on speed, four-wheel drive mode, and drive
mode selection.
See Switching the
Electronic Locking Differential On and
Off
(page 303).
Note: The electronic locking differential is
for off-road use only and is not for use on
dry pavement. Using the electronic locking
differential on dry pavement results in
increased tire wear, noise and vibration.
ELECTRONIC LOCKING
DIFFERENTIAL PRECAUTIONS
Operating the Electronic Locking
Differential with a Spare or
Mismatched Tires
On vehicles with an electronic locking
differential, the size of the spare tire can
affect performance of the system. If there
is a significant difference between the two
rear tires, you may have limited electronic
locking differential functionality. If the
system has difficulty disengaging, release
301
F-150 (TFD) Canada/United States of America, enUSA, Edition date: 202104, Second-Printing Electronic Locking Differential
(If Equipped)

the accelerator pedal and turn the steering
wheel in the opposite direction when
rolling. We recommend engaging and
disengaging the electronic locking
differential at a stop when you mount a
spare on the rear axle.
SWITCHING THE ELECTRONIC
LOCKING DIFFERENTIAL ON
AND OFF - RAPTOR
The button to activate and deactivate the
electronic locking differential is in the
center of the drive mode rotary switch.
To manually activate or deactivate the
electronic locking differential, press the
electronic locking differential button.
Note:
The electronic locking differential can
activate or deactivate automatically based
on speed, four-wheel drive mode, and drive
mode selection. See Selecting a Drive
Mode (page 373).
Rear Electronic Locking Differential Engagement Speed and Availability Automatic Re-
Engagement Speed
Automatic Disen-
gagement Speed
Maximum Engage-
ment Speed
Drive Modes
20 mph (30 km/h)
25 mph (41 km/h)
20 mph (30 km/h)
Normal (4A, 4H)
20 mph (30 km/h)
25 mph (41 km/h)
20 mph (30 km/h)
Sport (4A, 4H)
20 mph (30 km/h)
25 mph (41 km/h)
20 mph (30 km/h)
Slippery (4A, 4H)
20 mph (30 km/h)
25 mph (41 km/h)
20 mph (30 km/h)
Tow/Haul (4A,4H)
No Speed Limit
No Speed Limit
No Speed Limit
Off-Road (4H) 1
302
F-150 (TFD) Canada/United States of America, enUSA, Edition date: 202104, Second-Printing Electronic Locking Differential
(If Equipped)E308146

Automatic Re-
Engagement Speed
Automatic Disen-
gagement Speed
Maximum Engage-
ment Speed
Drive Modes
No Speed Limit
No Speed Limit
No Speed Limit
Baja (4H)
No Speed Limit
No Speed Limit
No Speed Limit
Rock Crawl (4L) 1
1 Automatically engages when you select this drive mode. You have the ability to manually
override the automatic engagement by pressing the electronic locking differential button. Automatic Re-
Engagement Speed
Automatic Disen-
gagement Speed
Maximum Engage-
ment Speed
4WD Mode
No speed Limit
No speed Limit
No speed Limit
Four-Wheel Drive
Low (4L)
Note: The electronic locking differential
may not engage if you press your accelerator
pedal during an engagement attempt. A
message could display in the instrument
display guiding you to release the
accelerator pedal.
Note: If the electronic locking differential
has difficulty disengaging, release the
accelerator pedal and turn the steering
wheel in the opposite direction while rolling.
Note: The electronic locking differential is
for off-road use only and is not for use on
dry pavement. Using the electronic locking
differential on dry pavement results in
increased tire wear, noise and vibration.
SWITCHING THE ELECTRONIC
LOCKING DIFFERENTIAL ON
AND OFF - 4X4
The button to activate and deactivate the
electronic locking differential is in the
center of the drive mode rotary switch. 303
F-150 (TFD) Canada/United States of America, enUSA, Edition date: 202104, Second-Printing Electronic Locking Differential (If Equipped)E323655

To manually activate or deactivate the
electronic locking differential, press the
electronic locking differential button.
Note:
The electronic locking differential can
activate or deactivate automatically based
on speed, four-wheel drive mode, and drive
mode selection. See Selecting a Drive
Mode (page 373).
4X4 Rear Electronic Locking Differential Engagement Speed and Availability Automatic Re-
Engagement Speed
Automatic Disen-
gagement Speed
Maximum Engage-
ment Speed
Drive Modes
20 mph (30 km/h)
25 mph (41 km/h)
20 mph (30 km/h)
Normal (2H, 4A 2
, 4H)
20 mph (30 km/h)
25 mph (41 km/h)
20 mph (30 km/h)
Eco (2H, 4A 2
, 4H)
20 mph (30 km/h)
25 mph (41 km/h)
20 mph (30 km/h)
Sport (2H, 4A 2
, 4H)
20 mph (30 km/h)
25 mph (41 km/h)
20 mph (30 km/h)
Slippery (2H, 4A 2
,
4H)
No Speed Limit
No Speed Limit
No Speed Limit
Deep Snow/Sand
(4H, 4L) 1
No Speed Limit
No Speed Limit
No Speed Limit
Mud/Ruts (4H, 4L) 1
No Speed Limit
No Speed Limit
No Speed Limit
Rock Crawl (4L) 1
20 mph (30 km/h)
25 mph (41 km/h)
No Speed Limit
Tow/Haul Mode
1 Automatically engages when you select these drive modes. You have the ability to
manually override the automatic engagement by pressing the electronic locking differential
button.
2 If available for 4A drive modes.
304
F-150 (TFD) Canada/United States of America, enUSA, Edition date: 202104, Second-Printing Electronic Locking Differential
(If Equipped)E308146