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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Note:
If your vehicle sustains damage to
the bumper or fascia leaving it misaligned
or bent, it could alter the sensing zone
causing inaccurate measurement of
obstacles or false alerts.
Note: Vehicle loading and suspension
changes can impact the angle of the sensors
and may change the normal detection zone
of the system resulting in inaccurate
measurement of obstacles or false alerts.
Note: When you connect a trailer, the
system may detect the trailer and provide
an alert, or the system turns off. If the
system does not turn off, switch the system
off manually after you connect the trailer.
Note: You may experience reduced system
performance on road surfaces that limit
deceleration. For example, roads with ice,
loose gravel, mud or sand.
SWITCHING REVERSE
BRAKING ASSIST ON AND OFF
1. Press Features on the touchscreen. 2. Press
Driver Assistance.
3. Switch
Reverse Brake Assist on or off.
Note: The system is unavailable when rear
parking aid or cross traffic alert is off.
OVERRIDING REVERSE
BRAKING ASSIST
There could be instances when
unexpected or unwanted braking occurs.
Firmly pressing the accelerator pedal or
switching the feature off overrides the
system.
REVERSE BRAKING ASSIST
INDICATORS
If the system determines that a collision
with an obstacle may occur, full braking
may apply. Bring your vehicle to a stop a
safe distance away from the obstacle. A message and warning
indicator appear when the
system applies the brakes.
REVERSE BRAKING ASSIST – TROUBLESHOOTING
REVERSE BRAKING ASSIST – INFORMATION MESSAGES Action
Message
Make sure that all doors, liftgate and hoodare closed. Drive the vehicle on a straight road for a short period. Make sure the
parking aids and cross traffic alert systems
are on. If the message remains on, have the system checked as soon as possible.
Reverse Brake Assist Not Available See
Manual
Displays when a system error has occurred.Have your vehicle checked as soon as possible.
Reverse Brake Assist Fault
Displays when reverse brake assist is off.
Reverse Brake Assist Off
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(If Equipped)E293490

HOW DOES STABILITY
CONTROL WORK
WARNING: Vehicle modifications
involving braking system, aftermarket
roof racks, suspension, steering system,
tire construction and wheel and tire size
may change the handling characteristics
of your vehicle and may adversely affect
the performance of the electronic
stability control system. In addition,
installing any stereo speakers may
interfere with and adversely affect the
electronic stability control system.
Reducing the effectiveness of the
electronic stability control system could
lead to an increased risk of loss of vehicle
control, vehicle rollover, personal injury
and death. WARNING:
Remember that even
advanced technology cannot defy the
laws of physics. It's always possible to
lose control of a vehicle due to
inappropriate driver input for the
conditions. Aggressive driving on any
road condition can cause you to lose
control of your vehicle increasing the risk
of personal injury or property damage.
Activation of the electronic stability
control system is an indication that at
least some of the tires have exceeded
their ability to grip the road; this could
reduce the operator's ability to control
the vehicle potentially resulting in a loss
of vehicle control, vehicle rollover,
personal injury and death. 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.
If a driving condition activates either the
stability control or traction control you may
experience the following conditions:
• The stability and traction control light
flashes.
• Your vehicle slows down.
• Reduced engine power.
The stability control system has several
features built into it to help you maintain
control of your vehicle:
Electronic Stability Control
Electronic stability control enhances your
vehicle ’s ability to prevent skids or lateral
slides by applying brakes to one or more
of the wheels individually and, if necessary,
reducing engine power.
Roll Stability Control
Roll stability control enhances your
vehicle ’s ability to prevent rollovers by
detecting your vehicle ’s roll motion and
the rate at which it changes by applying
the brakes to one or more wheels
individually.
Curve Control
Curve control enhances your vehicle ’s
ability to follow the road when cornering
severely or avoiding objects in the roadway.
Curve control operates by reducing engine
power and, if necessary, applying brakes
to one or more of the wheels individually.
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WHAT IS DRIVE MODE
CONTROL
Your vehicle has various drive modes that
you can select for different driving
conditions. Depending on the drive mode
that you select, the system adjusts various
vehicle settings.
HOW DOES DRIVE MODE
CONTROL WORK - RAPTOR
Selectable drive modes change various
electronic and mechanical settings within
your vehicle to tailor its performance and
driving characteristics to on-road or
off-road driving conditions. Steering feel
and effort, traction control, stability
control, chassis controls, powertrain
response, transmission shift points,
four-wheel driveline settings, exhaust noise
level and suspension dampening are
automatically altered to a pre-determined
setting depending upon the drive mode
that you select.
Note:
Your vehicle has diagnostic checks
that continuously monitor all systems for
proper operation. If a drive mode is
unavailable due to a system fault, your
vehicle defaults to normal mode and the
driveline remains in the four-wheel drive
setting that you last selected prior to the
system fault. Note:
Your vehicle reverts to normal mode
each time you start it. If you shut your
vehicle off in a drive mode other than
normal mode, at startup the instrument
cluster screen displays a pop-up asking if
you would like to return to your last used
drive mode. If you select yes to the pop-up,
your vehicle returns to the last selected drive
mode and the default four-wheel driveline
setting associated with that drive mode. If
you select no, your vehicle remains in normal
mode and the default four-wheel driveline
setting associated with that drive mode. If
you do not select yes or no, the pop-up
message times out, your vehicle remains in
normal mode, and the four-wheel driveline
setting remains in its last used setting.
Note: Do not use the electronic locking
differential on dry, hard surfaces. Doing so
produces excessive noise, vibration and
increases tire wear. See Electronic Locking
Differential (page 301).
HOW DOES DRIVE MODE
CONTROL WORK
Selectable drive modes change various
electronic and mechanical settings within
your vehicle to tailor its performance and
driving characteristics to on-road or
off-road driving conditions. Steering feel
and effort, traction control, stability
control, chassis controls, powertrain
response, transmissions shift points,
four-wheel driveline setting, exhaust noise
level and suspension dampening are
automatically altered to a pre-determined
setting depending upon the drive mode
that is selected.
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•
Comfort – Slightly more assist for
driver preference and daily driving ease.
• Off-road – Similar assist to Normal
with added damping for improved
control during off-road driving.
After selecting the desired setting, you may
feel a soft feedback bump in the steering
wheel when the changeover occurs.
Note: If you disconnect or remove the
battery, the steering system defaults to
normal.
Selecting a Suspension Mode To change the suspension feel,
press the button on the steering
wheel. The first press displays a
pop-up message in the instrument cluster
display for the selected mode and
subsequent presses changes the selected
mode.
Modes:
• Normal – Default factory setting.
• Sport – Slightly stiffer suspension with
emphasis on handling and control.
• Off-road – Maximizes shock
performance in extreme off-road
environments.
Selecting an Exhaust Mode To change the exhaust sound,
press the button on the steering
wheel. The first press displays a
pop-up message in the instrument cluster
display for the selected mode and
subsequent presses changes the selected
mode.
Modes:
• Normal – Default setting provides a
balance of comfort and feedback.
• Sport – Slightly louder than normal for
spirited driving. •
Baja – Loudest setting for off-road use
only. Maximum exhaust noise under all
driving conditions.
• Quiet – Quietest setting for maximum
comfort under all driving conditions.
SELECTING A DRIVE MODE Rotate the drive mode control on the
center console to select or change a drive
mode.
Note:
Button icons vary depending on the
vehicle.
DRIVE MODES
BAJA - RAPTOR For high speed off-road driving.
Baja mode optimizes the throttle
control for better response and
torque delivery.
Four-wheel drive high is the default
four-wheel drive mode. Four-wheel drive
auto is not available in baja mode.
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Off-road is the default steering and
suspension modes. All steering and
suspension modes are available.
Baja is the default exhaust mode. All
exhaust modes are available.
The system tunes the engine and
transmission controls to baja mode.
The system tunes the stability and traction
controls to baja mode.
The electronic locking differential is
available at all speeds in four-wheel drive.
See Switching the Electronic Locking
Differential On and Off (page 303).
Note: Using baja mode on dry, hard
surfaces could produce some vibration,
driveline bind up, and potential excessive
tire and vehicle wear depending on the
four-wheel drive mode selection.
DEEP SNOW/SAND - RAPTOR For off-road driving on soft, dry
sand or deep snow. This mode
optimizes accelerator pedal
response, traction and stability controls to
help maintain forward momentum. If your
vehicle becomes stuck in deep conditions,
use this mode to help get unstuck.
Four-wheel drive high is the default
four-wheel drive mode. Four-wheel drive
low is selectable in deep snow/sand mode.
Comfort is the default steering mode. All
steering modes are available.
Off-road is the default suspension mode.
All suspension modes are available.
Sport is the default exhaust mode. All
exhaust modes are available.
The system tunes the engine and
transmission controls to deep snow/sand
mode.
The system tunes the stability and traction
controls to deep snow/sand 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).
Note: Do not use this mode when driving
on pavement or packed snow. This could
cause driveline bind up and damage the
system depending on the four-wheel drive
mode selection. See
Four-Wheel Drive
(page 291).
DEEP SNOW/SAND - 4X4 For off-road driving on soft, dry
sand or deep snow. This mode
optimizes accelerator pedal
response, traction and stability controls to
help maintain forward momentum. If your
vehicle becomes stuck in deep conditions,
use this mode to help get unstuck.
Four-wheel drive high is the default
four-wheel drive mode. Four-wheel drive
low is selectable in deep snow/sand 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).
Note: Do not use this mode when driving
on pavement or packed snow. This could
cause driveline bind up and damage the
system depending on the four-wheel drive
mode selection. See
Four-Wheel Drive
(page 291).
ECO - 4X4 For efficient driving. This mode
helps deliver maximum fuel
efficiency and helps to increase
driving range.
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Two-wheel drive high is the default
four-wheel drive mode. Four-wheel drive
low is not available in eco mode.
The electronic locking differential is
available below 25 mph (40 km/h). See
Switching the Electronic Locking
Differential On and Off
(page 303).
ECO - 4X2 For efficient driving. This mode
helps deliver maximum fuel
efficiency and helps to increase
driving range.
The electronic locking differential is
available below
25 mph (40 km/h). See
Switching the Electronic Locking
Differential On and Off
(page 303).
MUD/RUTS - 4X4 For off-road driving. This mode
enhances vehicle performance
to traverse muddy, rutted or
uneven terrains.
Four-wheel drive high is the default
four-wheel drive mode. Four-wheel drive
low is selectable in mud/rut 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).
Note: Do not use this mode when driving
on pavement or packed snow. This could
cause driveline bind up and damage the
system depending on the four-wheel drive
mode selection. See
Four-Wheel Drive
(page 291). NORMAL - RAPTOR For everyday driving. This mode
is the perfect balance of
excitement, comfort and
convenience. This is the default mode after
each ignition cycle.
Two-wheel drive high is the default
four-wheel drive mode. All four-wheel drive
modes are selectable when in normal
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 normal mode.
The system tunes the stability and traction
controls to normal mode.
The electronic locking differential is
available below
25 mph (40 km/h) in
four-wheel drive. See Switching the
Electronic Locking Differential On and
Off
(page 303).
NORMAL - 4X4 For everyday driving. This mode
is the perfect balance of
excitement, comfort and
convenience. This is the default mode after
each ignition cycle.
Two-wheel drive high is the default
four-wheel drive mode. All four-wheel drive
modes are selectable when in 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).
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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.
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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.
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