2021 FORD F-150 check engine

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 to your
vehicle and, if necessary, have your vehicle
fixed as soon as possible.
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 extended operation in mud, sand,
water, or similar dirty conditions, inspect
the underbody and clean your vehicle as
soon as possible.
If you experience unusual vibration after
driving in mud, slush or similar conditions,
check the wheels for impacted material.
Impacted material can cause vibrations
while driving and wheel imbalance.
Remove the material to resolve the
problem.
COLD WEATHER
PRECAUTIONS
The functional operation of some
components and systems can be affected
at temperatures below approximately
-13°F (-25°C)
. DRIVING ON SNOW AND ICE WARNING:
If you are driving in
slippery conditions that require tire
chains or cables, then it is critical that
you drive cautiously. Keep speeds down,
allow for longer stopping distances and
avoid aggressive steering to reduce the
chances of a loss of vehicle control
which can lead to serious injury or death.
If the rear end of your vehicle slides while
cornering, steer in the direction of the
slide until you regain control of your
vehicle.
On ice and snow, you should drive more
slowly than usual. Your vehicle has a four
wheel anti-lock brake system, do not pump
the brake pedal.
See Anti-Lock Braking
System Limitations (page 308).
BREAKING-IN
Your vehicle requires a break-in period. For
the first 1,000 mi (1,600 km), avoid driving
at high speeds, heavy braking, aggressive
shifting or using your vehicle to tow. During
this time, your vehicle may exhibit some
unusual driving characteristics.
DRIVING ECONOMICALLY
The following helps to improve fuel
consumption:
• There is no need to wait for your engine
to warm up. The vehicle is ready to
drive immediately after starting.
• Your fuel consumption should improve
throughout your hybrid's break-in
period.
• Accelerate and slow down in a smooth,
moderate fashion.
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•
Moderate braking is particularly
important since it allows you to
maximize the energy captured by the
regenerative braking system.
• Drive at steady speeds without
stopping.
• Anticipate stops; slowing down may
eliminate the need to stop.
• Driving on flat terrain.
• Drive at reasonable speeds and
observe posted speed limits.
• Shut all windows when driving at high
speeds.
• Combine errands and minimize
stop-and-go driving.
• Drive with the tonneau cover installed
if your vehicle comes with one.
• Keep the tires properly inflated and use
only the recommended size.
• Use the recommended engine oil.
• Follow the recommended maintenance
schedule and carry out the
recommended checks.
• Perform all scheduled maintenance.
Note: Having your engine running is not
always an indication of inefficiency. In some
cases, it is actually more efficient than
driving in electric mode.
Avoid these actions; they reduce your fuel
consumption:
• Revving the engine.
• Aggressive driving increases the
amount of energy required to move
your vehicle.
• Driving in lower temperatures during
the first 5–10 mi (12 –16 km) of driving.
• Idle for periods longer than one minute.
• Use the air conditioner or front
defroster. •
Adding certain accessories to your
vehicle like bug deflectors, rollbars,
light bars, running boards, ski racks or
luggage racks.
• Use the speed control in hilly terrain.
• Using fuel blended with alcohol.
• Drive a heavily loaded vehicle or tow a
trailer.
• Driving with the wheels out of
alignment.
DRIVING IN SPECIAL
CONDITIONS
EMERGENCY MANEUVERS
In an unavoidable emergency where you
must make a sudden sharp maneuver, turn
the steering wheel only as rapidly and as
far as required to avoid the emergency.
Apply smooth pressure to the accelerator
pedal or brake pedal as needed. Avoid
abrupt steering, acceleration and braking
changes. Abrupt changes could increase
the risk of vehicle roll over, loss of vehicle
control and personal injury. If possible, use
any available road surfaces to bring your
vehicle under control.
FLOOR MATS WARNING:
Use a floor mat
designed to fit the footwell of your
vehicle that does not obstruct the pedal
area. Failure to follow this instruction
could result in the loss of control of your
vehicle, personal injury or death. WARNING:
Pedals that cannot
move freely can cause loss of vehicle
control and increase the risk of serious
personal injury.
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F-150 (TFD) Canada/United States of America, enUSA, Edition date: 202104, Second-Printing Driving Hints

Removing the Jumper Cables
Remove the jumper cables in the reverse
order that they were connected.
Note:
Do not switch the headlamps on
when disconnecting the cables. The peak
voltage could blow the bulbs.
POST-CRASH ALERT SYSTEM
WHAT IS THE POST-CRASH
ALERT SYSTEM
The system helps draw attention to your
vehicle in the event of a serious impact.
HOW DOES THE POST-CRASH
ALERT SYSTEM WORK
The system is designed to turn the hazard
flashers on and to intermittently sound the
horn in the event of a serious impact that
deploys an airbag or the seatbelt
pretensioners.
POST-CRASH ALERT SYSTEM
LIMITATIONS
Depending on applicable laws in the
country your vehicle was built for, the horn
does not sound in the event of a serious
impact.
SWITCHING THE POST-CRASH
ALERT SYSTEM OFF
Press the hazard flasher switch or the
unlock button on the remote control to
switch the system off.
Note: The alert turns off when the vehicle
battery runs out of charge. AUTOMATIC CRASH SHUTOFF
WHAT IS AUTOMATIC CRASH
SHUTOFF
The automatic crash shutoff is designed
to stop the fuel going to the engine in the
event of a moderate or severe crash.
Note:
Not every impact causes a shutoff.
AUTOMATIC CRASH SHUTOFF
PRECAUTIONS WARNING: If your vehicle has been
involved in a crash, have the fuel system
checked. Failure to follow this instruction
could result in fire, personal injury or
death.
RE-ENABLING YOUR VEHICLE
1. Switch the ignition off.
2. Attempt to start your vehicle.
3. Switch the ignition off.
4. Attempt to start your vehicle.
Note: If your vehicle does not start after the
third attempt, have your vehicle checked as
soon as possible.
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6. Press and hold the brake pedal.
7. Using the instrument cluster controls
on the steering wheel, select Settings.
8. Select Neutral Tow.
9. Press and hold the
OK button until a
confirmation message appears in the
information display.
Note: If completed successfully, the
information display shows
Neutral Tow
Enabled Leave Transmission in Neutral.
This indicates that your vehicle is safe to
tow with all wheels on the ground.
Note: If you do not see a confirmation
message in the instrument cluster display,
you must perform the procedure again from
the beginning.
Note: You may hear noise as the transfer
case shifts into its neutral position. This is
normal.
10. Release the brake pedal.
11. Leave the transmission in neutral (N)
and switch your vehicle off by
pressing the push button ignition
switch once without pressing the
brake pedal or turning the key as far
toward the off position.
Note: Vehicles with keys do not turn to the
off position when the transmission is in
neutral (N). You must leave the key in the
ignition when towing. Use the keyless entry
keypad or an extra set of keys to lock and
unlock your vehicle.
Switching
Neutral Tow Off
1. With your vehicle properly secured to the tow vehicle, press and hold the
brake pedal and start the engine.
2. Switch your vehicle off by pressing the
push button ignition switch once or
turning the key as far towards the off
position and release the brake pedal. 3. Place your vehicle in accessory mode
by pressing the push button ignition
switch once without pressing the brake
pedal or by turning the ignition key to
the on position.
4. Press and hold the brake pedal.
5. Shift into park (P).
6. Release the brake pedal.
Note: If completed successfully, the
instrument cluster displays 2H and Neutral
Tow Disabled
.
Note: You must perform the switching
neutral tow on and switching neutral tow
off procedures again from the beginning if
the indicator light and message do not
display.
Note: You may hear a noise as the transfer
case shifts out of its neutral position. This
is normal.
7. Apply the parking brake, then disconnect your vehicle from the tow
vehicle.
8. Release the parking brake, start the engine, and shift into drive (D) to make
sure the transfer case is out of the
neutral tow position.
9. If the transfer case does not successfully shift out of its neutral
position, set the parking brake. Have
your vehicle checked as soon as
possible.
Resolving the
Shift Delayed Drive
Forward Message
1. Press and hold the brake pedal.
2. Start your vehicle.
3. Shift into neutral (N).
4. With the vehicle running, shift into drive
(D) and let the vehicle roll forward up
to
3 ft (1 m).
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F-150 (TFD) Canada/United States of America, enUSA, Edition date: 202104, Second-Printing Towing Your Vehicle

MAINTENANCE PRECAUTIONS
Service your vehicle regularly to help
maintain its roadworthiness and resale
value. There is a large network of
authorized dealers that are there to help
you with their professional servicing
expertise. We believe that their specially
trained technicians are best qualified to
service your vehicle properly and expertly.
They are supported by a wide range of
highly specialized tools developed
specifically for servicing your vehicle.
If your vehicle requires professional service,
an authorized dealer can provide the
necessary parts and service. Check your
warranty information to find out which
parts and services are covered.
Use only recommended fuels, lubricants,
fluids and service parts conforming to
specifications. See Capacities and
Specifications (page 574).
• Do not work on a hot engine.
• Make sure that nothing gets caught in
moving parts.
• Do not work on a vehicle with the
engine running in an enclosed space,
unless you are sure you have enough
ventilation.
• Keep all open flames and other burning
material, such as cigarettes, away from
the battery and all fuel related parts.
• Set the parking brake, shift the
transmission to park (P) and block the
wheels. OPENING AND CLOSING THE
HOOD WARNING:
Make sure that you fully
latch the hood before driving. Failure to
follow this instruction could result in
personal injury or death. 1.
Pull the hood release handle under the
left hand side of the instrument panel. 2. Pull the secondary release lever under
the front of the hood near the center
of your vehicle.
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3. Raise the hood until the lift cylinders
hold it open.
4. To close, lower the hood and make sure that it fully latches.
UNDER HOOD OVERVIEW - 2.7L ECOBOOST™ Engine compartment fuse box. See Fuses (page 493).
A.
Battery.
See Changing the 12V Battery (page 519).
B.
Engine oil filler cap.
See Checking the Engine Oil Level (page 510).
C.
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Engine oil dipstick. See Engine Oil Dipstick Overview (page 510).
D.
Brake fluid reservoir.
See Checking the Brake Fluid (page 309).
E.
Air filter assembly.
See Changing the Engine Air Filter (page 516).
F.
Engine coolant reservoir.
See Checking the Coolant (page 511).
G.
Windshield washer fluid reservoir.
H.
UNDER HOOD OVERVIEW - 3.0L DIESEL Engine compartment fuse box.
See Under Hood Fuse Box (page 493).
A.
Battery.
See Changing the 12V Battery (page 519).
B.
Engine oil filler cap.
See Checking the Engine Oil Level (page 510).
C.
Engine oil dipstick.
See Engine Oil Dipstick Overview (page 510).
D.
Brake fluid reservoir.
See Checking the Brake Fluid (page 309).
E.
Air filter assembly.
See Changing the Engine Air Filter (page 516).
F.
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Engine coolant reservoir. See Checking the Coolant (page 511).
G.
Windshield washer fluid reservoir.
H.
UNDER HOOD OVERVIEW - 3.3L Engine compartment fuse box.
See Fuses (page 493).
A.
Battery.
See Changing the 12V Battery (page 519).
B.
Engine oil filler cap.
See Checking the Engine Oil Level (page 510).
C.
Engine oil dipstick.
See Engine Oil Dipstick Overview (page 510).
D.
Brake fluid reservoir.
See Checking the Brake Fluid (page 309).
E.
Air filter assembly.
See Changing the Engine Air Filter (page 516).
F.
Engine coolant reservoir.
See Checking the Coolant (page 511).
G.
Windshield washer fluid reservoir.
H.
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