warning light FORD F-150 2021 Owner's Guide

Failure to perform active or manual
regeneration when instructed could result
in a clogged diesel particulate filter. If the
diesel particulate filter fills beyond the
regeneration threshold, your vehicle
disables the ability for active and manual
regeneration. This could result in
irreversible damage your vehicle Warranty
may not cover.
DIESEL PARTICULATE FILTER
REQUIREMENTS
The diesel particulate filter on your vehicle
requires periodic regeneration to maintain
its correct function.
If your journeys meet one of the following
conditions:
•
You drive only short distances.
• You frequently switch the ignition on
and off.
• Your journeys contain a high level of
acceleration and deceleration.
You must carry out occasional trips with
the following conditions to assist the
regeneration process:
• Drive your vehicle in more favorable
conditions, which you will find at higher
vehicle speeds in normal driving, on a
main road or freeway for a minimum
of 20 minutes. This drive may include
short stops that will not affect the
regeneration process.
• Avoid prolonged idling and observe
speed limits and road conditions.
• Do not switch the ignition off.
• Select a suitable gear to ideally
maintain engine speed between 1500
and 3000 RPM. DIESEL PARTICULATE FILTER
MANUAL REGENERATION
WHAT IS DIESEL PARTICULATE
FILTER MANUAL REGENERATION
Diesel particulate filter manual
regeneration allows you to manually start
regeneration of the diesel particulate filter
at idle to clean the filter.
Note:
If you are not sure whether your
vehicle has this feature, contact your
authorized dealer.
DIESEL PARTICULATE FILTER
MANUAL REGENERATION
PRECAUTIONS WARNING: Stay clear of the
exhaust tailpipe during regeneration. Hot
exhaust gases can burn you badly.
You may not be able to use manual
regeneration if the service engine soon
warning lamp appears in the information
display.
Note: During the use of manual
regeneration, you may observe a light
amount of white smoke. This is normal.
DIESEL PARTICULATE FILTER
MANUAL REGENERATION
REQUIREMENTS
You can use the manual regeneration
feature when a message appears in the
information display and you are not able
to drive in a manner that allows effective
automatic active regeneration or if you
choose to manually start the regeneration
of the diesel particulate filter while the
vehicle is idle.
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F-150 (TFD) Canada/United States of America, enUSA, Edition date: 202104, Second-Printing Diesel Particulate Filter
(If Equipped)

To select a four-wheel drive mode, press
the four-wheel drive mode control button
of the desired mode. You can select
two-wheel drive high (2H), four-wheel
drive high (4H), or if your vehicle has
four-wheel drive auto (4A) at a stop or
while driving. Once the shift is complete,
the information display will then display
the selected four-wheel drive mode. While
shifts are in progress, the lights on the
four-wheel drive control switch can flash
and you could see messages in the
information display indicating that a shift
is in progress or to release the accelerator
pedal to improve shift performance.
Note:
Do not perform this operation if the
rear wheels are slipping or while applying
the accelerator pedal.
Note: You could hear some noise as the
system shifts or engages which is normal.
If the system detects a fault, a warning
message appears in the information
display. See Four-Wheel Drive –
Information Messages (page 299).
Shifting to or from Four-Wheel
Drive Low (4L)
To select or exit four-wheel drive low (4L):
1. Bring your vehicle to a speed of
3 mph
(5 km/h) or less.
2. Place the transmission in neutral (N)
3. Press the desired four-wheel drive button on the four-wheel drive mode
control switch.
The information display will display a
message indicating a four-wheel drive shift
is in progress. If any of the above shift
conditions are not present, the shift will
not occur and the information display will
display information guiding the driver
through the proper shifting procedures. If
there is a transfer case tooth blockage a
message will display in the information display. To alleviate this condition, place
the transmission in a forward gear, move
your vehicle forward approximately
5 ft
(1.5 m), and shift the transmission back to
neutral (N) to allow the transfer case to
complete the range shift.
Note: You could hear some noise as the
system shifts or engages which is normal.
If the system detects a fault, a warning
message appears in the information
display.
See Four-Wheel Drive –
Information Messages (page 299).
FOUR-WHEEL DRIVE MODES
TWO-WHEEL DRIVE HIGH
Two-wheel drive high is for general
on-road driving. Power is sent to the rear
wheels only.
Note: Two-wheel drive high can turn on or
off based on Drive Mode selection See Drive
Mode Control
(page 371).
FOUR-WHEEL DRIVE AUTO
(If
Equipped)
Four-wheel drive auto provides
electronically controlled four-wheel drive
power to both the front and rear wheels,
as required, for increased traction in varying
on-road conditions. The four-wheel drive
auto tuning varies based on selected Drive
Mode.
See Selecting a Drive Mode (page
373).
Note: Four-wheel drive auto can turn on or
off automatically based on Drive Mode
selection.
See Selecting a Drive Mode
(page 373).
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F-150 (TFD) Canada/United States of America, enUSA, Edition date: 202104, Second-Printing Four-Wheel Drive
(If Equipped)

WHAT IS REVERSE BRAKING
ASSIST
The system uses sensors on the rear of
your vehicle to detect a possible collision
and applies the brakes to either reduce the
damage from impact, or to assist in
avoiding the collision.
HOW DOES REVERSE
BRAKING ASSIST WORK
Reverse Braking Assist functions when in
reverse (R) and traveling at a speed of
1–
7 mph (1.5– 12 km/h).
If the system detects an obstacle behind
your vehicle, it provides a warning through
the rear parking aid or cross traffic alert
system.
REVERSE BRAKING ASSIST
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:
To help avoid personal
injury, always use caution when in
reverse (R) and when using the sensing
system. WARNING:
The system may not
operate properly during severe weather
conditions, for example snow, ice, heavy
rain and spray. Always drive with due
care and attention. Failure to take care
may result in a crash. WARNING: Traffic control systems,
inclement weather, air brakes, external
motors and fans may affect the correct
operation of the sensing system. This
may cause reduced performance or false
alerts. WARNING:
Some situations and
objects prevent hazard detection. For
example low or direct sunlight, inclement
weather, unconventional vehicle types,
and pedestrians. Apply the brakes when
necessary. Failure to follow this
instruction could result in the loss of
control of your vehicle, personal injury or
death. WARNING:
Do not use the system
with accessories that extend beyond the
front or rear of your vehicle, for example
a trailer hitch or bike rack. The system is
not able to make corrections for the
additional length of the accessories.
The system only applies the brakes for a
short period of time when an event occurs.
Act as soon as you notice the brakes apply
in order to remain in control of the vehicle.
Note: Certain add-on devices around the
bumper or fascia may create false alerts.
For example, large trailer hitches, bicycle or
surfboard racks, license plate brackets,
bumper covers or any other device that may
block the normal detection zone of the
system. Remove the add-on device to
prevent false alerts.
Note: The system does not react to small
or moving objects, particularly those close
to the ground.
Note: The system does not operate during
hard acceleration or steering.
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F-150 (TFD) Canada/United States of America, enUSA, Edition date: 202104, Second-Printing Reverse Braking Assist
(If Equipped)

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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F-150 (TFD) Canada/United States of America, enUSA, Edition date: 202104, Second-Printing Stability Control

WHAT IS HILL DESCENT
CONTROL
Hill descent control allows the driver to set
and maintain vehicle speed while
descending steep slopes in various surface
conditions.
HOW DOES HILL DESCENT
CONTROL WORK
Hill descent control can maintain vehicle
speeds on downhill slopes between
2
– 20 mph (3– 32 km/h). Above 20 mph
(32 km/h), the system remains on but the
descent speed cannot be set or
maintained.
Note: The system does not function below
2 mph (3 km/h)
.
The system requires a cool down interval
after a period of sustained use. Hill descent
control provides a warning in the message
center and a tone sounds when the system
is about to disengage for cooling. At this
time, manually apply the brakes as needed
to maintain descent speed.
Note: The amount of time that the system
can remain active before cooling varies with
conditions.
HILL DESCENT CONTROL
PRECAUTIONS WARNING:
The system does not
control speed in low traction conditions
or extremely steep slopes. 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
personal injury. WARNING:
Hill descent control
cannot control descent in all surface
conditions and circumstances, such as
ice or extremely steep grades. Hill
descent control is a driver assist system
and cannot substitute for good judgment
by the driver. Failure to do so may result
in loss of vehicle control, crash or serious
injury. WARNING:
The system does not
replace the parking brake. When you
leave your vehicle, always apply the
parking brake and shift the transmission
into park (P) for automatic transmission
or first gear for manual transmission.
SWITCHING HILL DESCENT
CONTROL ON AND OFF Press the button on the
instrument panel. A light
illuminates and a tone sounds
when the system is active.
SETTING THE HILL DESCENT
SPEED
To increase or decrease the descent speed,
press the accelerator or brake pedal, or use
the SET
+ and SET - buttons on the
steering wheel. Once you reach the
preferred speed remove your feet from the
pedals.
HILL DESCENT CONTROL
INDICATOR Illuminates when you switch hill
descent control on.
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F-150 (TFD) Canada/United States of America, enUSA, Edition date: 202104, Second-Printing Hill Descent Control
(If Equipped)E163171 E163171

ADAPTIVE CRUISE CONTROL
LIMITATIONS
Sensor Limitations
WARNING: On rare occasions,
detection issues can occur due to the
road infrastructures, for example bridges,
tunnels and safety barriers. In these
cases, the system may brake late or
unexpectedly. At all times, you are
responsible for controlling your vehicle,
supervising the system and intervening,
if required. WARNING:
If the system
malfunctions, have your vehicle checked
as soon as possible. WARNING:
Large contrasts in
outside lighting can limit sensor
performance. WARNING:
The system only warns
of vehicles detected by the radar sensor.
In some cases there may be no warning
or a delayed warning. Apply the brakes
when necessary. Failure to follow this
instruction could result in personal injury
or death. WARNING:
The system may not
detect stationary or slow moving
vehicles below
6 mph (10 km/h). WARNING:
The system does not
detect pedestrians or objects in the road. WARNING:
The system does not
detect oncoming vehicles in the same
lane. WARNING:
The system may not
operate properly if the sensor is blocked.
Keep the windshield free from
obstruction. WARNING:
The sensor may
incorrectly track lane markings as other
structures or objects. This can result in
a false or missed warning. Camera.
1.
Radar sensor.
2.
The camera is on the windshield behind
the interior mirror.
The radar sensor is in the lower grille.
Note: You cannot see the sensor. It is
behind a fascia panel.
Note: Keep the front of your vehicle free of
dirt, metal badges or objects. Vehicle front
protectors, aftermarket lights, additional
paint or plastic coatings could also degrade
sensor performance.
A message displays if something obstructs
the camera or the sensor. When something
blocks the sensor, the system cannot
detect a vehicle ahead and does not
function. See
Adaptive Cruise Control
– Information Messages (page 362).
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F-150 (TFD) Canada/United States of America, enUSA, Edition date: 202104, Second-Printing Adaptive Cruise Control
(If Equipped)E328125

LANE CENTERING LIMITATIONS
Adaptive cruise control limitations apply
to lane centering unless stated otherwise
or contradicted by a lane centering
limitation. See Adaptive Cruise Control
Limitations (page 353).
Lane Centering may not correctly operate
in any of the following conditions:
• The lane is too narrow or wide.
• The system does not detect at least
one lane marking or when lanes merge
or split.
• Limited steering torque input is applied.
• Areas under construction or new
infrastructure.
• When modifications to the steering
system have been made.
• When using a spare tire.
• In high wind conditions.
Note: The driving assistance torque is
limited and may not be sufficient for all
driving situations such as driving through
tight curves or driving through curves at high
speeds.
Note: In exceptional conditions, such as
inclement weather or direct sunlight, the
system could deviate from the center line
or could cancel.
SWITCHING LANE CENTERING ON
AND OFF
You must keep your hands on the steering
wheel at all times.
The controls are on the steering wheel. Press the button.
The indicator appears in the information
display. When the system is on, the color
of the indicator changes to indicate the
system status. You can override the system at any time
by steering your vehicle.
Note:
The correct requirements must be
met before you can switch the system on.
See
Lane Centering Requirements (page
359).
Enabling and Disabling Lane
Centering
1. Press
Features on the touchscreen.
2. Press
Driver Assistance.
3. Press
Cruise Control.
4. Press
Lane Centering Assist.
LANE CENTERING ALERTS
You must keep your hands on the steering
wheel at all times.
When the system is active and detects no
steering activity for a period of time, the
system alerts you to put your hands on the
steering wheel. If you do not react to the
warnings the system cancels and slows
your vehicle down to idle speeds while
maintaining steering control.
See Lane
Centering Automatic Cancellation
(page
360).
The system also alerts you if your vehicle
crosses lane markings without detected
steering activity.
Note: The system could detect a light grip
or touch on the steering wheel as hands-off
driving.
LANE CENTERING AUTOMATIC
CANCELLATION
When an external condition cancels the
system, for example, no lane markings
available, a tone sounds and a message
appears in the instrument cluster display.
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F-150 (TFD) Canada/United States of America, enUSA, Edition date: 202104, Second-Printing Adaptive Cruise Control
(If Equipped)E308131

WHAT IS BLUECRUISE
BlueCruise keeps your vehicle centered in
the lane and offers a hands-free driving
mode in certain situations when using
adaptive cruise control.
HOW DOES BLUECRUISE
WORK
BlueCruise uses cameras to monitor your
vehicle position within a lane and applies
steering support to keep your vehicle
centered in the lane.
Using the cameras and location
information, BlueCruise allows you to
remove your hands from the steering wheel
and offers a hands-free driving mode in
certain areas.
When active, BlueCruise uses a driver
facing camera and infrared lighting to
monitor your eyes and head position to
detect if you are distracted. If the system
determines you are distracted, it alerts you
to return your eyes to the road.
Lighting area.
A
Camera.
B
Note: When BlueCruise is active, in certain
crash or near crash-like situations, such as
an air bag deployment or hitting a road
obstacle, camera data may record through
the vehicle event data recorder. See Event
Data (page 30). Note:
No data records under normal driving
conditions.
BLUECRUISE PRECAUTIONS WARNING: You are responsible for
keeping your eyes on the road 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: 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:
Do not use the system
when towing a trailer. Failure to follow
this instruction could result in the loss of
control of your vehicle, personal injury or
death. WARNING:
Obstructions to the
driver facing camera or infrared lighting
could prevent the system from properly
operating. Keep the camera and lighting
areas free from obstruction. Failure to
follow this instruction could result in the
loss of control of your vehicle, personal
injury or death.
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F-150 (TFD) Canada/United States of America, enUSA, Edition date: 202104, Second-Printing BlueCruise
(If Equipped)AABE319812

WARNING: Do not use the system
if any changes or modifications to the
steering wheel have been made. Any
changes or modifications to the steering
wheel could affect the functionality or
performance of the system. Failure to
follow this instruction could result in the
loss of control of your vehicle, personal
injury or death. WARNING:
The system may not
function if the sensor is blocked. WARNING:
Pay close attention to
changing road conditions such as
entering or leaving a highway, on roads
with intersections or roundabouts, roads
without visible lanes of travel, roads that
are winding, slippery, unpaved, or steep
slopes. WARNING:
The system is not a
crash warning or avoidance system. WARNING:
Large contrasts in
outside lighting can limit sensor
performance. WARNING:
The system attempts
to keep your vehicle in the center of the
lane as well as maintain speed and gap
control. The system may not be able to
perform these tasks in all situations. Do
not use the system in complex or
uncertain driving conditions. Failure to
follow this instruction could result in the
loss of control of your vehicle, personal
injury or death. WARNING: Your vehicle could drift
out of the lane of travel. Always be
prepared to manually steer your vehicle.
Failure to follow this instruction could
result in the loss of control of your
vehicle, personal injury or death. WARNING:
The system will not
operate if the sensor cannot track the
road lane markings.
BLUECRUISE REQUIREMENTS
BlueCruise only activates when all of the
following occur:
• BlueCruise is enabled in your
information and entertainment screen.
See
BlueCruise Settings (page 367).
• Adaptive cruise control is on.
• The system detects both lane
markings.
• Your hands are on the steering wheel.
• Your eyes are on the road.
Note: For hands-free mode to work, your
vehicle must be on certain limited access
divided freeways.
Note: The system may require updated
software for hands-free mode. See Vehicle
System Updates
(page 656).
BLUECRUISE LIMITATIONS
Any of the following conditions could result
in BlueCruise not correctly operating:
• You do not have your vehicle centered
in the lane.
• The lane is too narrow or too wide.
• The system does not detect at least
one lane marking or when lanes merge
or split.
• You are applying a low amount of
steering input.
• You are using the system in areas under
construction.
• If you make any aftermarket
modifications to the steering system.
• You are using a spare tire.
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F-150 (TFD) Canada/United States of America, enUSA, Edition date: 202104, Second-Printing BlueCruise
(If Equipped)

WHAT IS THE LANE KEEPING
SYSTEM
The lane keeping system alerts you by
providing temporary steering assistance
or steering wheel vibration when it detects
an unintended lane departure.
HOW DOES THE LANE
KEEPING SYSTEM WORK
The lane keeping system uses a forward
looking camera mounted on the windshield
to monitor vehicle movement within the
travel lane.
When the camera detects a drift out of the
travel lane, the lane keeping system alerts
the driver by vibrating the steering wheel,
or aids the driver by providing a small
steering input to move the vehicle back
into the travel lane.
The driver can select one of three modes:
•
Alert (If Equipped)
• Aid
• Alert + Aid
LANE KEEPING SYSTEM
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: The system will not
operate if the sensor cannot track the
road lane markings. WARNING:
The sensor may
incorrectly track lane markings as other
structures or objects. This can result in
a false or missed warning. 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. WARNING:
If damage occurs in the
immediate area surrounding the sensor,
have your vehicle checked as soon as
possible. WARNING:
The system may not
correctly operate if your vehicle is fitted
with a suspension kit not approved by
us. WARNING:
Large contrasts in
outside lighting can limit sensor
performance.
LANE KEEPING SYSTEM
LIMITATIONS
The lane keeping system only operates
when the vehicle speed is greater than
40 mph (64 km/h)
.
The system works when the camera can
detect at least one lane marking.
Note: When you select Aid or Alert and Aid
mode and the system detects no steering
activity for a short period of time, the system
alerts you to put your hands on the steering
wheel. The system may detect a light grip
or touch on the steering wheel as hands-off
driving.
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F-150 (TFD) Canada/United States of America, enUSA, Edition date: 202104, Second-Printing Lane Keeping System
(If Equipped)