light FORD F-150 2021 Repair Manual

WHAT IS AUTO-START-STOP
The system is designed to help reduce fuel
consumption and CO
2 emissions by
stopping the engine when it is idling, for
example at traffic lights.
AUTO-START-STOP
PRECAUTIONS WARNING: Apply the parking
brake, shift into park (P), switch the
ignition off and remove the key before
you leave your vehicle. Failure to follow
this instruction could result in personal
injury or death. WARNING:
Apply the parking
brake, shift into park (P), switch the
ignition off and remove the key before
you open the hood or have any service
or repair work completed. If you do not
switch the ignition off, the engine could
restart at any time. Failure to follow this
instruction could result in personal injury
or death.
SWITCHING AUTO-START-
STOP ON AND OFF
The system turns on when you switch the
ignition on. Press the button to switch the
system off.
Note: OFF
illuminates in the switch.
Note: Deactivating the system using the
button lasts only one key cycle.
Press the button again to switch the
system back on. Note:
The system turns off if it detects a
malfunction. If the system malfunctions,
have your vehicle checked as soon as
possible.
STOPPING THE ENGINE
Stop your vehicle, keep your foot on the
brake pedal and the transmission in drive
(D).
Note: Power assist steering turns off when
the engine stops.
RESTARTING THE ENGINE
Release the brake pedal or press the
accelerator pedal.
A message appears in the information
display if the system requires you to take
action.
AUTO-START-STOP
INDICATORS WARNING:
The system may
require the engine to automatically
restart when the auto-start-stop
indicator illuminates green or flashes
amber. Failure to follow this instruction
could result in personal injury. The Auto-Start-Stop indicator
illuminates green when the
engine stops. It flashes amber
and a message appears when you need to
take action. The Auto-Start-Stop indicator
illuminates gray with a
strikethrough when the system
is not available.
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FUEL QUALITY
SELECTING THE CORRECT FUEL -
FLEX FUEL – ETHANOL
Flex fuel vehicles have one of the following
identifiers:
•
Yellow fuel filler cap.
• Yellow bezel around the fuel filler inlet.
• Yellow fuel filler housing.
• Yellow E85 label on the fuel tank filler
door. Your vehicle operates on regular unleaded
gasoline with a minimum pump (R+M)/2
octane rating of 87 or regular unleaded
gasoline blended with a maximum of 85%
ethanol (E85).
Some fuel stations, particularly those in
high altitude areas, offer fuels posted as
regular unleaded gasoline with an octane
rating below 87. The use of these fuels
could result in engine damage that will not
be covered by the vehicle Warranty.
For best overall vehicle and engine
performance, premium fuel with an octane
rating of 91 or higher is recommended. The
performance gained by using premium fuel
is most noticeable in hot weather as well
as other conditions, for example when
towing a trailer. See Towing a Trailer
(page 428). Do not be concerned if the engine
sometimes knocks lightly. However, if the
engine knocks heavily while using fuel with
the recommended octane rating, contact
an authorized dealer to prevent any engine
damage.
We recommend Top Tier detergent
gasolines, where available to help minimize
engine deposits and maintain optimal
vehicle and engine performance.
For additional information, visit
www
.t op tier g a s. c om .
Note: Use of any fuel for which the vehicle
was not designed can impair the emission
control system, cause loss of vehicle
performance, and cause damage to the
engine which may not be covered by the
vehicle Warranty.
Do not use:
• Diesel fuel.
• Fuels containing kerosene or paraffin.
• Fuels containing more than 85%
ethanol or E100 fuel.
• Fuels containing methanol.
• Fuels containing metallic-based
additives, including manganese-based
compounds.
• Fuels containing the octane booster
additive, methylcyclopentadienyl
manganese tricarbonyl (MMT).
• Leaded fuel, using leaded fuel is
prohibited by law.
The use of fuels with metallic compounds
such as methylcyclopentadienyl
manganese tricarbonyl, which is a
manganese-based fuel additive, will impair
engine performance and affect the
emission control system.
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SELECTING THE CORRECT FUEL -
GASOLINE
Your vehicle operates on regular unleaded
gasoline with a minimum pump (R+M)/2
octane rating of 87.
Some fuel stations, particularly those in
high altitude areas, offer fuels posted as
regular unleaded gasoline with an octane
rating below 87. The use of these fuels
could result in engine damage that will not
be covered by the vehicle Warranty.
For best overall vehicle and engine
performance, premium fuel with an octane
rating of 91 or higher is recommended. The
performance gained by using premium fuel
is most noticeable in hot weather as well
as other conditions, for example when
towing a trailer. See Towing a Trailer
(page 428).
Do not be concerned if the engine
sometimes knocks lightly. However, if the
engine knocks heavily while using fuel with
the recommended octane rating, contact
an authorized dealer to prevent any engine
damage.
We recommend Top Tier detergent
gasolines, where available to help minimize
engine deposits and maintain optimal
vehicle and engine performance.
For additional information, visit
www .t op tier g a s. c om .Note:
Use of any fuel for which the vehicle
was not designed can impair the emission
control system, cause loss of vehicle
performance, and cause damage to the
engine which may not be covered by the
vehicle Warranty.
Do not use:
• Diesel fuel.
• Fuels containing kerosene or paraffin.
• Fuel containing more than 15% ethanol
or E85 fuel.
• Fuels containing methanol.
• Fuels containing metallic-based
additives, including manganese-based
compounds.
• Fuels containing the octane booster
additive, methylcyclopentadienyl
manganese tricarbonyl (MMT).
• Leaded fuel, using leaded fuel is
prohibited by law.
The use of fuels with metallic compounds
such as methylcyclopentadienyl
manganese tricarbonyl, which is a
manganese-based fuel additive, will impair
engine performance and affect the
emission control system.
SELECTING THE CORRECT FUEL
FOR COLD WEATHER - DIESEL
Choosing the Right Fuel: Vehicles
Operated Where Ultra Low Sulfur
Diesel Fuel Is Required (United
States/Canada/Puerto Rico/U.S.
Virgin Islands And Other Locales)
Note: Your Warranty will not cover damage
caused by using an improper type of fuel or
fuel additive.
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Note:
Do not blend used engine oil with
diesel fuel under any circumstances.
Blending used oil with the fuel significantly
increases your vehicle ’s exhaust emissions
and reduce engine life due to increased
internal wear.
We recommend Top Tier diesel fuel where
available to help minimize engine deposits
and maintain optimal vehicle and engine
performance.
For additional information, visit
www .t op tier g a s. c om .
You should use ultra-low sulfur diesel fuel
designated as number 1-D or 2-D with a
maximum of 15-ppm sulfur in your diesel
vehicle. You can operate your vehicle on
diesel fuels containing up to 20%
biodiesel, also known as B20. These fuels
should meet the ASTM D975 diesel or the
ASTM D7467 B6-B20 biodiesel industry
specifications. Outside of North America,
use fuels meeting EN590 or equivalent
local market standard. Using low-sulfur diesel fuel
(16-500 ppm) or high-sulfur
diesel fuel (greater than 500
ppm) in your diesel engine will cause
certain emission components to
malfunction which could also cause the
service engine soon light to illuminate
indicating an emissions-related concern.
Diesel fuel is adjusted seasonally for cold
temperature. For best results at
temperatures below 19°F (-7°C), we
recommend using a diesel fuel which has
been seasonally adjusted for the ambient
conditions. Choosing the Right Fuel: Vehicles
Operated Where Ultra Low Sulfur
Diesel Fuel Is Not Required
For the engine to operate reliably on
low-sulfur or high-sulfur diesel fuel, the
engine must be a factory-built high-sulfur
engine (available as a dealer order option
for select markets) or an ultra-low sulfur
diesel fuel configured engine that has been
retrofitted for high-sulfur diesel fuel using
authorized dealer service parts. Failure to
use retrofit components other than those
available through your authorized dealer
results in coolant system damage, engine
overheating, selective catalyst reduction
system or diesel particulate filter damage
and possible base engine damage.
Use only a diesel engine configured for use
with high-sulfur diesel fuel in markets with
diesel fuel that has sulfur content greater
than 15 ppm. Using low-sulfur diesel fuel
(16–500 ppm) or high-sulfur diesel fuel
(greater than 500 ppm) in a diesel engine
designed to use only ultra-low sulfur diesel
fuel could result in damage to engine
emission control devices and the after
treatment system, potentially rendering
the vehicle inoperable.
Vehicles with engines configured for use
with high-sulfur diesel fuel are only
available for sale in countries where
ultra-low sulfur diesel fuel is generally not
available or mandated by the government.
Vehicles originally sold in an ultra-low
sulfur diesel fuel market that are
subsequently exported to non-ultra low
sulfur diesel fuel markets will need to be
retrofitted at the customer
’s expense using
Ford authorized dealer service parts in
order to be reliably operated on non-ultra
low sulfur diesel fuel.
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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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(If Equipped)

•
Avoid spilling diesel exhaust fluid on
painted surfaces, carpeting or plastic
components. Immediately wipe away
any diesel exhaust fluid that has spilled
with a damp cloth and water. If it has
already crystallized, use warm water
and a sponge.
• Do not store the diesel exhaust fluid
bottle in your vehicle. If it leaks it could
cause damage to interior components
or release an ammonia odor inside your
vehicle.
• Do not re-use the diesel exhaust fluid
container once it is emptied.
• Store diesel exhaust fluid out of direct
sunlight and in temperatures between
23–68°F (-5– 20°C).
• The system has a diesel exhaust fluid
quality sensor. Dilution of diesel
exhaust fluid or use of any other liquid
in the selective catalytic reduction
system leads to a diesel exhaust fluid
system fault, eventually leading to the
vehicle only operating in idle-only
mode.
• Do not dilute diesel exhaust fluid with
water or any other liquid. FILLING THE SELECTIVE
CATALYTIC REDUCTION
SYSTEM TANK
FILLING THE SELECTIVE
CATALYTIC REDUCTION SYSTEM
TANK IN COLD WEATHER
Diesel exhaust fluid may freeze if the
ambient temperature is below 12°F (-11°C).
Your vehicle has a preheating system
which allows diesel exhaust fluid to
operate below
12°F (-11°C). If you do not
use your vehicle for an extended period
when the ambient temperature is below
12°F (-11°C)
, the fluid in the tank may
freeze. If the tank is overfilled and the fluid
freezes it may cause damage that your
Warranty will not cover.
FILLING THE SELECTIVE
CATALYTIC REDUCTION SYSTEM
TANK USING A FUEL STATION
PUMP
Filling the diesel exhaust fluid tank using
a fuel station pump is similar to refueling
your vehicle.
1. Fully open the fuel filler door. 2. Remove the diesel exhaust fluid tank
filler cap.
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Note:
The diesel exhaust fluid tank has a
blue filler cap.
3. Fully insert the diesel exhaust fluid pump nozzle. 4.
Operate the diesel exhaust fluid pump
nozzle within the area shown.
Note: The pump nozzle shuts off when the
tank is full.
5. Slightly raise the diesel exhaust fluid pump nozzle and then slowly remove
it.
6. Replace the diesel exhaust fluid tank filler cap. Turn it clockwise until you
feel a strong resistance and it clicks.
FILLING THE SELECTIVE
CATALYTIC REDUCTION SYSTEM
TANK USING A PORTABLE
CONTAINER
The following procedure applies to
Motorcraft diesel exhaust fluid or similar
fluid containers. Follow the
manufacturer's instructions.
1. Fully open the fuel filler door.
2. Remove the diesel exhaust fluid container cap.
3. Place the spout on to the container and
tighten it until you feel a strong
resistance. 4. Remove the diesel exhaust fluid tank
filler cap.
Note: The diesel exhaust fluid tank has a
blue filler cap.
5. Insert the spout into the filler neck until
the seal on the spout fully seats.
6. Pour the fluid into the tank.
Note: The fluid stops flowing when the tank
is full.
7. Return the container to the vertical position slightly below the diesel
exhaust fluid filler neck.
8. Allow any fluid remaining in the spout to drain back into the container.
9. Remove the spout from the diesel exhaust fluid filler neck.
10. Replace the diesel exhaust fluid tank
cap. Turn it clockwise until you feel
a strong resistance and it clicks.
11. Remove the spout from the diesel exhaust fluid container and replace
the cap.
Note: If there is diesel exhaust fluid left in
the container retain it for later use. The
spout is reusable. Wash the spout with
clean water prior to storage. Do not use the
diesel exhaust fluid spout with any other
fluid.
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•
Additional noise from the transfer case
or other drive components.
• Difficulty shifting out of a mechanically
locked four-wheel drive mode.
Use of a dissimilar spare wheel and tire
assembly can lead to impairment of the
following:
• Comfort and noise.
• Winter weather driving capability.
• Wet driving capability.
• Four-wheel drive capability.
Mechanical Shift Blocking
On four-wheel drive vehicles with a
mechanically locked four-wheel drive high
mode, the transfer case distributes torque
to the front wheels by mechanically
interlocking the front and rear driveshafts
together. Various external factors can
affect shifting performance of this type of
system including, but not limited to:
• Vehicle acceleration.
• Dissimilar tire sizes.
• Steering input.
If the system detects a mechanical shift
blockage at speed after you select
two-wheel drive high, the message "4x4
Unable to Disengage See Manual", could
display momentarily. If this message
displays, one or more of the following
actions can relieve the mechanical shift
block:
• Momentary acceleration.
• Momentary braking.
• Bringing the vehicle to a stop.
• Shifting the transmission to neutral and
back to drive.
• Shifting the transmission to reverse
and back to drive.
• Driving the vehicle around a tight turn
at a slow speed. SELECTING A FOUR-WHEEL
DRIVE MODE - RAPTOR
The four-wheel drive mode control is on
the instrument panel.
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 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.
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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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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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