2021 FORD F-150 brakes

Driving In Mud
Be cautious of sudden changes in vehicle
speed or direction when you are driving in
mud.
After driving through mud, clean your
vehicle. Excess mud stuck on the wheels
and tires and rotating components can
cause an imbalance and result in damage.
Note:
The vehicle brakes are less effective
when wet or muddy.
Driving Over Rocks and Gravel
Never attempt to straddle a rock that is
large enough to strike your axles or
undercarriage.
Leave a generous gap between your
vehicle and other vehicles to minimize the
risk of damage. Avoid dust clouds as they
reduce visibility.
Climbing A Hill WARNING: Extreme care should
be used when steering the vehicle in
reverse down a slope so as not to cause
the vehicle to swerve out of control.
Do not drive over the crest of a hill without
seeing what conditions are on the other
side. Do not drive in reverse over a hill
without the aid of an observer.
Note: Avoid turning on steep slopes or hills.
A danger lies in losing traction, slipping
sideways and possible vehicle roll over.
Note: Too much acceleration can cause
the tires to slip, spin or lose traction,
resulting in loss of vehicle control. Driving Through Water 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.
The key to a safe crossing is the water
depth, current and bottom of the water's
condition. On soft bottoms, the vehicle
sinks in, effectively increasing the water
level on the vehicle. Make sure to consider
this when determining the depth of water.
Determine the depth and speed of the
current before attempting a water crossing.
Be aware that obstacles and debris could
be beneath the water ’s surface.
Note: Cross flowing water at an angle
heading slightly upstream.
Note: Tread lightly and avoid damage to
the environment.
Water can cause permanent damage that
may not be covered by your vehicle
warranty. See
Driving Through Water
Limitations (page 474).
Note: Failure to follow the recommended
speeds can result in vehicle damage.
Muddy waters can reduce the cooling
system effectiveness by depositing debris
into the radiator.
High currents even in shallow water can
wash the dirt out from around your tires or
push your vehicle across slippery rocks or
surfaces.
Do not cross any body of water that is fast
flowing and rising.
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F-150 (TFD) Canada/United States of America, enUSA, Edition date: 202104, Second-Printing Driving Hints

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

UNDER HOOD OVERVIEW - 3.5L ECOBOOST™
Engine compartment fuse box. See Fuses (page 493).
A.
Battery.
See Changing the 12V Battery (page 519).
B.
Engine oil filler cap.
See Checking the Engine Oil Level (page 510).
C.
Engine oil dipstick.
See Engine Oil Dipstick Overview (page 510).
D.
Brake fluid reservoir.
See Brakes (page 308).
E.
Air filter.
See Changing the Engine Air Filter (page 517).
F.
Engine coolant reservoir.
See Checking the Coolant (page 511).
G.
Windshield washer fluid reservoir.
H.
507
F-150 (TFD) Canada/United States of America, enUSA, Edition date: 202104, Second-Printing MaintenanceE313722

PREPARING YOUR VEHICLE
FOR STORAGE
If you plan on storing your vehicle for 30
days or more, the following maintenance
recommendations ensures your vehicle
stays in good operating condition.
Under various conditions, long-term
storage may lead to degraded engine
performance or failure unless you use
specific precautions to preserve your
vehicle.
General
•
Store all vehicles in a dry, ventilated
place.
• If vehicles are stored outside, they
require regular maintenance to protect
against rust and weather damage.
• Make sure all linkages, cables, levers
and pins under your vehicle are covered
with grease to prevent rust.
• Move vehicles at least 25 ft (7.5 m)
every 15 days to lubricate working parts
and prevent corrosion.
• Fill the fuel tank with high-quality fuel
until the first automatic shutoff of the
fuel pump nozzle.
Engine
• Change the engine oil and filter prior to
storage because used engine oil
contains contaminants which may
cause engine damage.
• Start the engine every 15 days for a
minimum of 15 minutes. Run at fast
idle with the climate controls set to
defrost until the engine reaches normal
operating temperature.
• With your foot on the brake, shift
through all the gears while the engine
is running. Body
•
Wash your vehicle thoroughly to
remove dirt, grease, oil, tar or mud from
exterior surfaces, rear-wheel housings
and the underside of front fenders.
• Periodically wash your vehicle if it is
stored in exposed locations.
• Touch-up exposed or primed metal to
prevent rust.
• Cover chrome and stainless steel parts
with a thick coat of auto wax to prevent
discoloration. Re-wax as necessary
when you wash your vehicle.
• Lubricate all hood, door and luggage
compartment hinges and latches with
a light grade oil.
• Cover interior trim to prevent fading.
• Keep all rubber parts free from oil and
solvents.
Hybrid Battery Systems
We recommend the following actions for
your vehicle:
• When storing your vehicle for greater
than 30 days the state of charge
should be approximately 50%.
Additionally we recommend
disconnecting the 12V battery which
will reduce system loads on the HV
battery.
12 Volt Battery
• Check and recharge as necessary. Keep
connections clean.
Note: It is necessary to reset memory
features if you disconnect the battery
cables.
Brakes
Make sure the brakes and parking brake
release fully.
540
F-150 (TFD) Canada/United States of America, enUSA, Edition date: 202104, Second-Printing Storing Your Vehicle

3
360 Degree Camera...................................342
360 Degree Camera Settings.......................344
360 Degree Camera Guide Lines..........343
360 Degree Camera Limitations...........342
360 Degree Camera Precautions..........342
360 Degree Camera Settings.................344 Switching the 360 Degree Camera On and
Off...................................................................... 344
Switching the 360 Degree Camera View................................................................... 345
4
4WD See: Four-Wheel Drive...................................... 291
9
911 Assist
............................................................87
A
A/C See: Climate Control - Vehicles With:
Automatic Temperature Control.............186
See: Climate Control - Vehicles With: Manual Temperature Control..................................... 191
About This Publication.................................24
About Us
.............................................................21
ABS See: Brakes.......................................................... 308
Accessing Apps
............................................649
Accessing Navigation.................................653
Accessing the Passive Key Backup Position
.........................................................244
Accessories....................................................658
Active Park Assist........................................346 Active Park Assist –
Troubleshooting............................................ 348
Active Park Assist Precautions
...............346
Active Park Assist – Troubleshooting........................................348
Active Park Assist – Frequently Asked Questions........................................................ 348
Active Park Assist – Information Messages......................................................... 348Adaptive Cruise Control............................352
Adaptive Cruise Control –
Troubleshooting............................................ 362
Intelligent Adaptive Cruise Control..............361
Lane Centering................................................... 359
Adaptive Cruise Control Automatic Cancellation...............................................355
Adaptive Cruise Control Indicators
.......358
Adaptive Cruise Control Limitations..................................................353
Adaptive Cruise Control Precautions.................................................352
Adaptive Cruise Control – Troubleshooting........................................362
Adaptive Cruise Control – Information Messages......................................................... 362
Adaptive Front Lighting..............................157 How Does Adaptive Front Lighting
Work.................................................................... 157
Switching Adaptive Front Lighting On and Off....................................................................... 158
Adjustable Pedals
........................................142
Adjusting the Exterior Mirrors..................165
Adjusting the Headlamps
..........................521
Adjusting the Instrument Panel Lighting Brightness.....................................................161
Adjusting the Integrated Trailer Brake Controller Mode
........................................436
Adjusting the Map.......................................653 Changing the Format of the Map................653
Zooming the Map In and Out........................ 653
Adjusting the Pedals...................................142
Adjusting the Seatbelt Height..................66
Adjusting the Seatbelt Length..................67
Adjusting the Seatbelts During Pregnancy......................................................66
Adjusting the Sound Settings.................627
Adjusting the Steering Wheel - Vehicles With: Manual Adjustable Steering
Column..........................................................140
Adjusting the Steering Wheel - Vehicles With: Power Adjustable Steering
Column..........................................................140
Adjusting the Volume
.................................627
Aid Mode........................................................384
How Does Aid Mode Work............................. 384
What Is Aid Mode.............................................. 384
Airbag Precautions
.........................................74
767
F-150 (TFD) Canada/United States of America, enUSA, Edition date: 202104, Second-Printing Index

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