2021 FORD F-150 service

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)

Before you start manual regeneration, do
the following:
•
Shift into park (P) and apply the
parking brake, on stable, level ground.
• Park your vehicle outside of any
structure.
• Park your vehicle 10– 15 ft (3–5 m)
away from any obstructions and away
from materials that can easily combust
or melt, for example paper, leaves,
petroleum products, fuels, plastics and
other dry organic material.
• Make sure there is a minimum of 1/8
tank of fuel.
• Make sure all fluids are at proper levels.
DIESEL PARTICULATE FILTER
MANUAL REGENERATION
LIMITATIONS
You cannot use manual regeneration until
the diesel particulate filter load percentage
has reached 100%. The diesel particulate
filter load percentage fluctuates up and
down when driving your vehicle due to
active and passive regenerations.
If your vehicle is operated with significant
stationary operation, low speed drive
cycles less than
25 mph (40 km/h), short
drive cycles, drive time less than 15 minutes
or the vehicle does not fully warm up,
passive and active regeneration may not
sufficiently clean the diesel particulate
filter system.
Aftermarket devices or modifications to
the exhaust system may reduce the
effectiveness of the exhaust system as
well as cause damage to the exhaust
system or engine. This may also degrade
vehicle performance and could lead to
engine damage that may not be covered
by the vehicle Warranty. STARTING DIESEL PARTICULATE
FILTER MANUAL REGENERATION
Start with your vehicle engine and when it
has reached the normal operating
temperature, press the information display
control button on the steering wheel. See
Instrument Cluster Display
(page 178).
If the diesel particulate filter is near or at
saturation, a message requesting
permission to initiate filter cleaning
appears in the information display. See
What Is the Diesel Particulate Filter
(page 268). Answer yes to this prompt and
then follow the next prompts regarding
exhaust position required to initiate
manual regeneration. Be sure to
understand each prompt. If you are not
sure what is being asked by each prompt,
contact an authorized dealer. The display
confirms the operation has started and
when it has finished. You can also drive to
clean the filter. When the system is at the point
of oversaturation, the service
engine warning lamp illuminates
and a message appears in the information
display. You cannot initiate filter cleaning.
You must have your vehicle checked as
soon as possible.
Once manual regeneration starts, engine
speed increases to approximately 1600
rpm and the cooling fan speed increases.
You will hear a change in audible sound
due to engine speed and cooling fan speed
increases.
It is not necessary to open the hood on the
engine compartment. Once manual
regeneration completes, the engine speed
returns to normal idling. The exhaust
system remains very hot for several
minutes even after regeneration is
complete. Do not reposition the vehicle
over materials that could burn until the
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F-150 (TFD) Canada/United States of America, enUSA, Edition date: 202104, Second-Printing Diesel Particulate Filter
(If Equipped)

exhaust system has had sufficient time to
cool. Depending on the amount of soot
collected by the diesel particulate filter,
ambient temperature and altitude, manual
regeneration lasts approximately 30
minutes.
DIESEL PARTICULATE FILTER
– TROUBLESHOOTING
DIESEL PARTICULATE FILTER –
WARNING LAMPS
If filter service is required, the
engine control system warning
lamp illuminates in the
information display. If there are any issues with the
diesel particulate filter system,
the engine control system
warning lamp and a service
engine soon warning lamp
illuminate to inform you that
your vehicle requires service. Have your
vehicle checked as soon as possible.
DIESEL PARTICULATE FILTER – INFORMATION MESSAGES Action
Message
Your vehicle has entered the cleaning mode. Various engineactions will raise the exhaust temperature in the Diesel
Particulate Filter system to burn off the particles (exhaust
soot). After the vehicle burns the particles off, the exhaust temperature will return to normal levels. This message is NORMAL.
Exhaust Filter Cleaning
The diesel particulate filter is full of particles (exhaust soot)
and you are not operating the vehicle in a manner that allows normal cleaning. Drive the vehicle above 30 mph (48 km/h)
until the message turns off.
Exhaust Filter Over-
loaded Drive to Clean
Exhaust Filter Over-loaded Clean Now
The diesel particulate filter is full of particles (exhaust soot)
and you are not operating the vehicle in a manner that allows normal cleaning. Drive the vehicle above
30 mph (48 km/h)
until the message turns off.
Exhaust Filter at Limit
Clean Now
Exhaust Filter at Limit Drive to Clean Now
Your diesel particulate filter is clean.
Exhaust Filter Drive
Complete
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F-150 (TFD) Canada/United States of America, enUSA, Edition date: 202104, Second-Printing Diesel Particulate Filter
(If Equipped)

Action
Message
Your diesel particulate filter is clean (OCR Only).
Exhaust Filter Cleaned
The manual regeneration process has stopped (OCR Only).
Exhaust Filter Cleaning
Stopped
You must have your vehicle serviced by an authorized dealer.
Ignoring this warning message could lead to reduced drivability and customer expense, including damage to the diesel
particulate filter. Your new vehicle warranty may not cover this damage.
Exhaust Filter Over Limit
Service Now
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F-150 (TFD) Canada/United States of America, enUSA, Edition date: 202104, Second-Printing Diesel Particulate Filter (If Equipped)

WHAT IS THE CATALYTIC
CONVERTER
The catalytic converter is part of your
vehicle's emissions system and filters
harmful pollutants from the exhaust gas.
CATALYTIC CONVERTER
PRECAUTIONS
WARNING: Do not park, idle or
drive your vehicle on dry grass or other
dry ground cover. The emission system
heats up the engine compartment and
exhaust system, creating the risk of fire. WARNING:
The normal operating
temperature of the exhaust system is
very high. Never work around or attempt
to repair any part of the exhaust system
until it has cooled. Use special care when
working around the catalytic converter.
The catalytic converter heats up to a very
high temperature after only a short
period of engine operation and stays hot
after the engine is switched off. WARNING:
Exhaust leaks may
result in entry of harmful and potentially
lethal fumes into the passenger
compartment. If you smell exhaust
fumes inside your vehicle, have your
vehicle inspected immediately. Do not
drive if you smell exhaust fumes.
To avoid damaging the catalytic converter:
• Do not crank the engine for more than
10 seconds at a time.
• Do not run the engine with a spark plug
lead disconnected.
• Do not push-start or tow-start your
vehicle. Use booster cables. See Jump
Starting the Vehicle
(page 486). •
Use the correct fuel.
See Fuel and
Refueling (page 255).
• Do not switch the ignition off when your
vehicle is moving.
• Avoid running out of fuel.
• Have the items listed in scheduled
maintenance information performed
according to the specified schedule.
Note: Do not make any unauthorized
changes to your vehicle or engine. By law,
vehicle owners and anyone who
manufactures, repairs, or services a fleet of
vehicles are not permitted to intentionally
remove an emission control device or
prevent it from working.
CATALYTIC CONVERTER –
TROUBLESHOOTING
CATALYTIC CONVERTER –
WARNING LAMPS
Your vehicle has an on-board diagnostics
system that monitors the emission control
system. If any of the following warning
lamps illuminate, this may indicate that
the on-board diagnostics system has
detected an emission control system
malfunction. Continuing to drive your vehicle may cause
reduced power or the engine to stop.
Failure to respond to a warning lamp may
cause damage that your vehicle Warranty
may not cover. Have your vehicle checked
as soon as possible.
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F-150 (TFD) Canada/United States of America, enUSA, Edition date: 202104, Second-Printing Catalytic Converter

WHAT IS THE HIGH VOLTAGE
BATTERY
The high voltage battery is a highly
sophisticated lithium ion battery system,
used to store electrified propulsion energy
to power the vehicle.
HIGH VOLTAGE BATTERY
PRECAUTIONS
WARNING: This battery pack
should only be serviced by an authorized
electric vehicle technician. Improper
handling can 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. WARNING:
Do not touch the
electronic ignition system parts after you
have switched the ignition on or when
the engine is running. The system
operates at high voltage. Failure to
adhere to this warning could result in
serious personal injury or death. WARNING:
Keep your hands and
clothing clear of the engine cooling fan.
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F-150 (TFD) Canada/United States of America, enUSA, Edition date: 202104, Second-Printing High Voltage Battery - Hybrid Electric Vehicle (HEV)

FOUR-WHEEL DRIVE –
TROUBLESHOOTING
FOUR-WHEEL DRIVE – WARNING
LAMPS
Illuminates when a four-wheel
drive or power train fault is
present.
Note:
When a system fault is present, the
system can typically remain in whichever
mode was selected prior to the fault
condition occurring. It does not default to
two-wheel drive in all circumstances. When
this warning is displayed, have your vehicle
serviced by an authorized dealer.
FOUR-WHEEL DRIVE – INFORMATION MESSAGES - RAPTOR Action
Message
A four-wheel drive system fault is present.Have your vehicle checked as soon as possible.
Check 4x4
The four-wheel drive system is making ashift.
4x4 Shift in Progress
Displays when you attempt to switch to
four-wheel drive low mode and you do not shift the transmission to neutral (N).
For 4x4 LOW Shift to N
Displays when you attempt to switch tofour-wheel drive low mode and your
vehicle's speed is greater than 3 mph
(5 km/h).
For 4x4 LOW Slow to 3 MPH
For 4x4 LOW Slow to 5 km/h
Displays when you attempt to switch from
four-wheel drive low mode and you do notshift the transmission to neutral (N).
To Exit 4x4 LOW Shift to N
Displays when you attempt to switch fromfour-wheel drive low mode and your
vehicle's speed is greater than
3 mph
(5 km/h).
To Exit 4x4 LOW Slow to 3 MPH
To Exit 4x4 LOW Slow to 5 km/h
Displays when there is a transfer case geartooth blockage while shifting to or from
four-wheel drive low mode or to the neutral state. Place the transmission in a forward
gear, move your vehicle forward approxim-
ately
5 ft (1.5 m), and shift the transmission
back to neutral (N) to allow the transfer case to complete the range shift.
Shift Delayed Drive Forward
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F-150 (TFD) Canada/United States of America, enUSA, Edition date: 202104, Second-Printing Four-Wheel Drive
(If Equipped)

3. Press the accelerator pedal and pull
away in a normal manner.
ELECTRIC PARKING BRAKE
AUDIBLE WARNING
Sounds when the parking brake is on and
your vehicle is moving. If the warning tone
continues after you have released the
parking brake, this indicates a malfunction.
Have your vehicle checked as soon as
possible.
RELEASING THE ELECTRIC
PARKING BRAKE IF THE
VEHICLE BATTERY HAS RUN
OUT OF CHARGE WARNING: The electric parking
brake does not operate if the vehicle
battery has run out of charge.
Connect a booster battery to the vehicle
battery to release the electric parking brake
if the vehicle battery has run out of charge.
See
Jump Starting the Vehicle (page
486). ELECTRIC PARKING BRAKE –
TROUBLESHOOTING
ELECTRIC PARKING BRAKE –
WARNING LAMPS
Brake System It illuminates red when you apply
the parking brake and your
vehicle is on. If the lamp flashes
when the parking brake has been
released, this indicates the
parking brake system requires
service. Have your vehicle checked as
soon as possible.
Note: Lamps may vary depending on region.
Electric Parking Brake When the lamp illuminates
yellow, it indicates a malfunction
in the electric parking brake.
Have your vehicle checked as soon as
possible.
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F-150 (TFD) Canada/United States of America, enUSA, Edition date: 202104, Second-Printing Electric Parking BrakeE270480 E146190