air suspension FORD F-150 2021 Owners Manual

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.
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F-150 (TFD) Canada/United States of America, enUSA, Edition date: 202104, Second-Printing At a Glance - Raptor

WHAT IS SPEED SIGN
RECOGNITION
Speed sign recognition detects speed limit
signs to inform you of the current speed
limit. Detected speed signs appear in the
information display.
HOW DOES SPEED SIGN
RECOGNITION WORK
Speed sign recognition uses a sensor
behind the interior mirror to detect speed
signs.
If your vehicle has speed sign recognition
with navigation, stored speed sign data
may influence the indicated speed limit
value.
SPEED SIGN RECOGNITION
PRECAUTIONS
WARNING: You are responsible for
controlling your vehicle at all times. The
system is designed to be an aid and does
not relieve you of your responsibility to
drive with due care and attention. Failure
to follow this instruction could result in
the loss of control of your vehicle,
personal injury or death. WARNING: In cold and severe
weather conditions the system may not
function. Rain, snow and spray can all
limit sensor performance. WARNING:
The system may not
operate properly if the sensor is blocked.
Keep the windshield free from
obstruction. Note:
Do not carry out windshield repairs
in the immediate area surrounding the
sensor.
Note: If your vehicle has a suspension kit
not approved by us, the system may not
correctly function.
Note: The system may not detect all speed
signs and may incorrectly read signs.
Note: Always fit our original parts when
replacing headlamp bulbs. Other bulbs may
reduce system performance.
SPEED SIGN RECOGNITION
LIMITATIONS
Speed sign recognition may not operate
correctly due to:
• Outdated map data.
• Incorrect recognition of speed limits by
the sensor of signs on parallel roads or
exit ramps.
• Missed recognition of faded, dirty, or
distorted signs.
SPEED SIGN RECOGNITION
INDICATORS When the system detects a speed limit
sign, it appears in the information display.
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F-150 (TFD) Canada/United States of America, enUSA, Edition date: 202104, Second-Printing Speed Sign Recognition
(If Equipped)E317824

Using Trail Control
Trail Control provides you the ability to
maneuver the vehicle without using the
throttle and brake pedals.
The system controls acceleration and
braking in difficult off-road environments,
which allows you to focus on steering. See
Trail Control (page 324).
Trail Control Performance:
• Manages wheel slip to maximize
traction.
• Provides braking to maximize traction
in descents.
Using Trail One Pedal Drive
(If
Equipped)
Trail one pedal drive allows you to
accelerate and brake using only the
accelerator pedal.
Use this when driving over large obstacles,
such as rocks or logs, to help maintain a
constant vehicle speed.
In 4H, the system offers lift pedal braking
and auto hill hold functionality. See
What
Is Trail One Pedal Drive (page 325).
Note: Trail one pedal drive is only available
when the vehicle is in 4H or 4L.
AFTER DRIVING YOUR VEHICLE
OFF-ROAD - RAPTOR WARNING:
After off-road use,
before returning to the road, check the
wheels and tires for damage. Off-road
use may cause damage to your wheels
and tires that can lead to tire failure, loss
of vehicle control, serious injury or death. WARNING:
Always re-inflate tires
to recommended tire pressures before
the vehicle is operated on-road. The
recommended pressure is located on the
tire label or safety certification label,
located on the B-pillar, inside the driver's
door.
Driving off-road places more stress on your
vehicle than most on-road driving. After
driving off-road, check for damage and, if
necessary, have your vehicle repaired by
an authorized dealer.
Inspect the underbody of your vehicle by
checking tires, body structure, steering,
suspension, and exhaust system for
damage.
Check the radiator for mud and debris and
clean as needed.
Remove accumulations of plants or brush.
These things could be a fire hazard or hide
damage to the fuel lines, brake hoses, and
propeller shafts.
After operation in mud, sand, water, or
similar dirty conditions, inspect the
underbody and clean your vehicle.
AFTER DRIVING YOUR VEHICLE
OFF-ROAD WARNING:
After off-road use,
before returning to the road, check the
wheels and tires for damage. Off-road
use may cause damage to your wheels
and tires that can lead to tire failure, loss
of vehicle control, serious injury or death.
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F-150 (TFD) Canada/United States of America, enUSA, Edition date: 202104, Second-Printing Driving Hints

If you intend on parking your vehicle for an
extended period after cleaning the wheels
with a wheel cleaner, drive your vehicle for
a few minutes before parking your vehicle.
This reduces the risk of corrosion of the
brake discs, brake pads and linings.
Do not clean the wheels when they are hot.
Note:
Some car washes could damage
wheel rims and covers.
Note: Using non-recommended cleaners,
harsh cleaning products, chrome wheel
cleaners or abrasive materials could
damage wheel rims and covers.
CLEANING THE ENGINE
COMPARTMENT
Use a vacuum cleaner to remove debris
from the screen area below windshield.
Note: If you are not familiar with the parts
around the engine do not wash the engine
compartment. Avoid frequent engine
washes.
When washing the engine compartment:
• Never wash or rinse the engine while it
is hot or running.
• Never wash or rinse any ignition coil,
spark plug wire or spark plug well.
• Cover the battery, power distribution
box, and air filter assembly to prevent
water damage.
Note: If your vehicle has an engine cover
remove the cover before application of
shampoo and degreaser.
• Spray an approved engine shampoo
and degreaser on all parts that require
cleaning and rinse with water. CLEANING STRIPES OR
GRAPHICS
It is recommended to wash your vehicle by
hand however, pressure washing may be
used under the following conditions:
•
Use a spray with a 40° wide spray
angle pattern.
• Keep the nozzle at a
12 in (305 mm)
distance and 90° angle to your
vehicle's surface.
• Do not use water pressure higher than
2,000 psi (14,000 kPa)
.
• Do not use water hotter than
179°F
(82°C).
Note: Holding the pressure washer nozzle
at an angle to the vehicle's surface may
damage graphics and cause the edges to
peel away from the vehicle's surface.
CLEANING CAMERA LENSES AND
SENSORS
We recommend that you only use
lukewarm or cold water and a soft cloth
to clean the camera lens and sensors.
Note: Do not pressure wash camera lens
and sensors.
CLEANING THE UNDERBODY
Flush the complete underside of your
vehicle frequently. Keep body and door
drain holes free from packed dirt.
Rear suspension components may require
regular cleaning with a power washer or a
thorough rinse with a strong stream of
water if the vehicle is operated in dusty or
muddy environments. Rear leaf springs or
other suspension components may emit
squeaking or popping noises while
operating the vehicle if particles, such as
dirt, rocks, or other debris, are present in
the components.
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F-150 (TFD) Canada/United States of America, enUSA, Edition date: 202104, Second-Printing Vehicle Care

•
Stand at a minimum of 12 ft
(3.66 m) away from the wheel
and tire assembly.
• Use both eye and ear
protection.
Important: Remember to replace
the wheel valve stems when the
road tires are replaced on your
vehicle.
It is recommended that the two
front tires or two rear tires
generally be replaced as a pair if
the worn tires still have usable
depth.
To avoid potential Four-Wheel
Drive (4WD) malfunction or
(4WD) system damage, it is
recommended to replace all four
tires rather than mixing
significantly worn tires with new
tires.
The tire pressure sensors mounted
in the wheels (originally installed
on your vehicle) are not designed
to be used in aftermarket wheels.
The use of wheels or tires not
recommended may affect the
operation of your tire pressure
monitoring system.
If the tire pressure monitoring
system indicator is flashing, your
system is malfunctioning. Your
replacement tire might be
incompatible with your tire
pressure monitoring system, or
some component of the system
may be damaged. USING SNOW CHAINS WARNING: Do not exceed 30 mph
(50 km/h)
. Failure to follow this
instruction could result in the loss of
control of your vehicle, personal injury or
death. WARNING:
Do not use snow chains
on snow-free roads. WARNING:
Only fit snow chains to
specified tires. WARNING:
If your vehicle is fitted
with wheel trims, remove them before
fitting snow chains. WARNING: If you choose to install
snow tires on your vehicle, they must be
the same size, construction, and load
range as the original tires listed on the
tire placard, and they must be installed
on all four wheels. Mixing tires of
different size or construction on your
vehicle can adversely affect your
vehicle's handling and braking, and may
lead to loss of vehicle control. WARNING:
Wheels and tires must
be the same size, load index and speed
rating as those originally fitted on the
vehicle. Use of any other tire or wheel
can affect the safety and performance
of your vehicle. Additionally, the use of
non-recommended tires and wheels can
cause steering, suspension, axle, transfer
case or power transfer unit failure.
Follow the recommended tire inflation
pressures found on the Safety
Compliance Certification label, or the
Tire Label on the B-Pillar or the edge of
the driver door. Failure to follow this
instruction could result in loss of vehicle
control, vehicle rollover, or personal injury
or death.
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F-150 (TFD) Canada/United States of America, enUSA, Edition date: 202104, Second-Printing Wheel and Tire Information

Only use snow chains on rear wheels.
Install snow chains in pairs. Do not use
self-tensioning snow chains.
Only use snow chains on the following
specified tire sizes. Only install chains that
are 15mm or less (SAE Class S chains).
•
245/70R17
• 265/70R17
• LT265/70R17
• 265/60R18
• LT265/70R18
We recommend you use steel wheels of
the same size and specification if snow
chains are required because chains may
chip aluminum wheels.
Follow these guidelines when using snow
tires and traction devices: •
If possible, avoid fully loading your
vehicle.
• Purchase snow chains from a
manufacturer that clearly labels body
to tire dimension restrictions.
• When driving with snow chains do not
exceed 30 mph (50 km/h) or the
maximum speed recommended by the
chain manufacturer, whichever is less.
• Drive cautiously. If you hear the snow
chains rub or bang against the vehicle,
stop and tighten them. If this does not
work, remove the snow chains to
prevent vehicle damage.
• Remove the snow chains when they
are no longer needed. Do not use snow
chains on dry roads.
• If a temporary spare wheel is mounted
on your vehicle, do not use snow chains
on the axle with the temporary spare
wheel. Use snow chains that fit against the
sidewall of the tire to prevent the chains
from touching the wheel rims or
suspension. Refer to the previous
illustration.
If you have any questions regarding snow
chains, please contact your authorized
dealer.
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F-150 (TFD) Canada/United States of America, enUSA, Edition date: 202104, Second-Printing Wheel and Tire InformationE292547

Check Every Six Months
The battery connections. Clean if necessary.
The body and door drain holes for obstructions. Clean if necessary. The cooling system fluid level and the coolant system strength. The door weatherstrips for wear. Lubricate if necessary.
The hinges, latches and outside locks for proper operation. Lubricate if necessary. The parking brake for proper operation.
The seatbelts and seat latches for wear and function.
Safety warning lamps, brake, ABS, airbag and seatbelt for operation.
The washer spray and wiper operation. Clean or replace blades as necessary.
Multi-Point Inspection
It is important to have the systems on your
vehicle regularly checked. This can help
identify potential issues and prevent major
problems. We recommend having the
following multi-point inspection performed
at every scheduled maintenance interval
to help make sure your vehicle keeps
running great. Multi-Point Inspection
Hazard warning system operation
Accessory drive belt or belts
Horn operation
Battery performance
Radiator, cooler, heater and air conditioninghoses
Engine air filter
Suspension components for leaks ordamage
Exhaust system
Steering and linkage
Exterior lamps operation
Tires including the spare for wear andproper pressure 2
Fluid levels 1
; fill if necessary
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F-150 (TFD) Canada/United States of America, enUSA, Edition date: 202104, Second-Printing Scheduled Maintenance

Operating in Dusty or Sandy Conditions - Such as Unpaved or Dusty Roads
Inspect the wheels and related components for abnormal
noise, wear, looseness or drag.
Every 5,000 mi (8,000 km)
Rotate the tires, inspect the tires for wear and measure
the tread depth.
Every
7,500 mi (12,000 km)
Inspect the brake system pads and rotors.
Inspect the air filter restriction gauge. Replace the filter if
necessary.
Inspect the steering and suspension ball joints and tie rods.
Lubricate any grease fittings.
Change the engine oil and filter. 1
Every 7,500 mi (12,000 km),
six months or 300 engine
hours
Inspect and lubricate the U-joints.
Replace the engine-mounted and frame-mounted fuel
filters.
Every
30,000 mi
(48,000 km), 6 months or
600 engine hours
Replace the air inlet foam filter.
Every
30,000 mi
(48,000 km)
1 Reset the oil change reminder after engine oil and filter changes.
See Resetting the
Engine Oil Change Reminder (page 511). Off-Road Operation
Inspect the wheels and related components for abnormal
noise, wear, looseness or drag.
Every
5,000 mi (8,000 km)
Inspect functional holes in exhaust tip to make sure they
are clean and clear of debris or foreign materials. See
Vehicle Care
(page 534). .
As required
Inspect the steering and suspension ball joints and tie rods.
Lubricate any grease fittings.
Rotate the tires, inspect the tires for wear and measure
tread depth.
Every 7,500 mi (12,000 km),
six months or 300 engine
hours
Inspect the brake system pads and rotors.
Inspect the air filter restriction gauge. Replace the filter if
necessary.
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F-150 (TFD) Canada/United States of America, enUSA, Edition date: 202104, Second-Printing Scheduled Maintenance