2021 FORD F-150 air filter

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.
505
F-150 (TFD) Canada/United States of America, enUSA, Edition date: 202104, Second-Printing MaintenanceE337515

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.
506
F-150 (TFD) Canada/United States of America, enUSA, Edition date: 202104, Second-Printing MaintenanceE337514

UNDER HOOD OVERVIEW - 3.5L 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.
Engine oil dipstick.
See Engine Oil Dipstick Overview (page 510).
D.
Brake fluid reservoir.
See Brakes (page 308).
E.
Air filter.
See Changing the Engine Air Filter (page 517).
F.
Engine coolant reservoir.
See Checking the Coolant (page 511).
G.
Windshield washer fluid reservoir.
H.
507
F-150 (TFD) Canada/United States of America, enUSA, Edition date: 202104, Second-Printing MaintenanceE313722

UNDER HOOD OVERVIEW - 3.5L, HYBRID ELECTRIC VEHICLE
(HEV)
Engine compartment fuse box. See Fuses (page 493).
A.
Battery.
See Changing the 12V Battery (page 519).
B.
Engine oil dipstick.
See Engine Oil Dipstick Overview (page 510).
C.
Engine oil filler cap.
See Adding Engine Oil (page 510).
D.
Brake fluid reservoir. See
Checking the Brake Fluid (page 309).
E.
Air filter.
See Changing the Engine Air Filter (page 517).
F.
Secondary coolant reservoir. See
Checking the Coolant (page 511).
G.
Engine coolant reservoir. See
Checking the Coolant (page 511).
H.
Windshield washer fluid reservoir.
I.
508
F-150 (TFD) Canada/United States of America, enUSA, Edition date: 202104, Second-Printing MaintenanceE333718

UNDER HOOD OVERVIEW - 5.0L
Engine compartment fuse box. See Under Hood Fuse Box (page 493).
A.
Engine oil filler cap.
See Engine Oil Dipstick Overview (page 510).
B.
Engine oil dipstick.
See Engine Oil Dipstick Overview (page 510).
C.
Brake fluid reservoir.
See Checking the Brake Fluid (page 309).
D.
Air filter assembly.
See Changing the Engine Air Filter (page 517).
E.
Engine coolant reservoir.
See Checking the Coolant (page 511).
F.
Windshield washer fluid reservoir.
G.
Battery.
See Changing the 12V Battery (page 519).
H.
509
F-150 (TFD) Canada/United States of America, enUSA, Edition date: 202104, Second-Printing MaintenanceE346494

The air conditioning may automatically
turn on and off during severe operating
conditions to protect the engine from
overheating. When the coolant
temperature decreases to the normal
operating temperature, the air conditioning
turns on.
If the coolant temperature gauge moves
fully into the red zone, or if the coolant
temperature warning or service engine
soon messages appear in your information
display, do the following:
1. Stop your vehicle as soon as it is safe
to do so. Fully apply the parking brake,
shift into park (P) or neutral (N).
2. Leave the engine running until the coolant temperature gauge needle
returns to the normal position. If the
temperature does not drop after
several minutes, follow the remaining
steps.
3. Switch the engine off and wait for it to
cool. Check the coolant level.
4. If the coolant level is at or below the minimum mark, add prediluted coolant
immediately.
5. If the coolant level is normal, restart the engine and continue. ENGINE AIR FILTER
CHECKING THE ENGINE AIR
FILTER RESTRICTION GAUGE -
DIESEL
The air filter restriction gauge is in the
upper housing of the air filter assembly.
Check the air filter restriction gauge
whenever you open the hood to carry out
general engine maintenance. Change the
air filter element when the restriction
gauge reads near the change filter line and
the gauge is yellow. Allowing the restriction
gauge to reach maximum affects engine
performance and fuel economy.
515
F-150 (TFD) Canada/United States of America, enUSA, Edition date: 202104, Second-Printing Maintenance E254173

After operating your vehicle during heavy
snowfall or extreme rain, do the following:
•
Snow: At the earliest opportunity, open
the hood and clear any snow and ice
from the air filter housing inlet and
reset the air filter restriction gauge.
• Extreme rain: The air filter element
dries out after approximately 15– 30
minutes of driving at highway speeds.
At the earliest opportunity, open the
hood and reset the air filter restriction
gauge.
CHANGING THE ENGINE AIR
FILTER - DIESEL WARNING: To reduce the risk of
vehicle damage and personal burn
injuries, do not start your engine with the
air cleaner removed and do not remove
it while the engine is running.
Change the air filter element at the correct
service interval. See
Scheduled
Maintenance (page 664).
Use the correct specification air filter
element. See
Motorcraft Parts (page
581).
Note: Failure to use the correct air filter
element may result in severe engine
damage. Resulting component damage
may not be covered by the vehicle Warranty. 1. Release the clips that secure the air
filter housing cover. Lift and rotate the
air filter housing cover. 2.
Remove the air filter element from the
air filter housing.
3. To install, reverse the removal procedure.
4. After installing a new air filter element,
reset the air filter restriction gauge by
pressing the reset button. See
Checking the Engine Air Filter
Restriction Gauge
(page 515).
516
F-150 (TFD) Canada/United States of America, enUSA, Edition date: 202104, Second-Printing MaintenanceE254171 E254172

CHANGING THE ENGINE AIR
FILTER - GASOLINE
WARNING: To reduce the risk of
vehicle damage and personal burn
injuries, do not start your engine with the
air cleaner removed and do not remove
it while the engine is running.
Change the air filter element at the proper
intervals. See
Scheduled Maintenance
(page 664).
When changing the air filter element, use
only the air filter element listed. See
Capacities and Specifications
(page
574).
Note: Failure to use the correct air filter
element could result in severe engine
damage that the vehicle Warranty may not
cover.
Note: When servicing the air cleaner, do not
allow foreign material to enter the air
induction system. The engine is susceptible
to damage from even small particles. 1. Release the clips that secure the air
filter cover to the housing.
2. Carefully lift the air filter housing cover.
3. Remove the air filter element from the
air filter housing.
4. To install, reverse the removal procedure.
517
F-150 (TFD) Canada/United States of America, enUSA, Edition date: 202104, Second-Printing MaintenanceE191820