maintenance schedule FORD EXPLORER 2021 User Guide

4.
Carefully lift the air filter housing cover
from the air filter housing assembly.
5. Remove the air filter element from the
air filter housing.
6. Wipe any dirt or debris from the air filter
housing and cover to make sure no dirt
gets in the engine and that you have a
good seal.
7. Install a new air filter element. Be careful not to crimp the filter element
edges between the air filter housing
and cover. This could cause filter
damage and allow unfiltered air to
enter the engine if it is not properly
seated.
8. Install the air filter housing cover.
9. Engage the clips to secure the air filter housing cover to the air filter housing.
10. Reconnect the boot to the air filter housing cover and torque to 3.69 lb.ft
(5 Nm).
CHANGING THE ENGINE AIR
FILTER - 3.0L 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.
When changing the engine air filter, do not
allow debris or foreign material to enter
the air induction system. Engine
components are susceptible to damage
not covered by the vehicle Warranty.
Change the air filter element at the correct
interval. See
Scheduled Maintenance
(page 482). Incorrect component use can cause
damage not covered by the vehicle
Warranty.
See Motorcraft Parts (page
388).
To replace the air filter element do the
following: 1. Remove the clips that secure the air
filter housing cover.
2. Using a screwdriver, loosen two clamps
on either side of the air filter housing
cover.
3. Gently pull the two boots back away from the air filter housing cover.
4. Carefully lift the air filter housing cover.
5. Remove the air filter element from the
air filter housing.
6. Wipe any dirt or debris from the air filter
housing and cover to make sure no dirt
gets in the engine and that you have a
good seal.
329
Explorer (CTW), enUSA, Edition date: 202007, Second-Printing MaintenanceE294778

7. Install a new air filter element. Be
careful not to crimp the filter element
edges between the air filter housing
and cover. This could cause filter
damage and allow unfiltered air to
enter the engine if it is not properly
seated.
8. Install the air filter housing cover.
9. Engage the clips to secure the air filter housing cover to the air filter housing.
10. Reconnect the two boots on the air filter housing cover and torque to
3.69 lb.ft (5 Nm).
CHANGING THE ENGINE AIR
FILTER - 3.3L 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.
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.
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.
When changing the air filter element, use
only the air filter element listed.
Change the air filter element at the proper
intervals. See
Scheduled Maintenance
(page 482). 1.
Release the clamps that secure the air
filter cover to the housing.
2. Using a screwdriver, loosen the clamp on the air filter housing cover.
3. Gently pull the boot back away from the air filter housing cover.
4. Carefully lift the air filter housing cover.
5. Remove the air filter element from the
air filter housing.
6. Wipe any dirt or debris from the air filter
housing and cover to make sure no dirt
gets in the engine and that you have a
good seal.
7. Install a new air filter element. Be careful not to crimp the filter element
edges between the air filter housing
and cover. This could cause filter
damage and allow unfiltered air to
enter the engine if it is not properly
seated.
330
Explorer (CTW), enUSA, Edition date: 202007, Second-Printing MaintenanceE295061
x2

8. Install the air filter housing cover.
9. Engage the clips to secure the air filter
housing cover to the air filter housing.
10. Reconnect the boot to the air filter housing cover and torque to 3.69 lb.ft
(5 Nm).
ENGINE COOLANT CHECK WARNING:
Do not remove the
coolant reservoir cap when the engine is
on or the cooling system is hot. Wait 10
minutes for the cooling system to cool
down. Cover the coolant reservoir cap
with a thick cloth to prevent the
possibility of scalding and slowly remove
the cap. Failure to follow this instruction
could result in personal injury. WARNING:
Do not put coolant in
the windshield washer reservoir. If
sprayed on the windshield, coolant could
make it difficult to see through the
windshield. WARNING:
To reduce the risk of
personal injury, make sure the engine is
cool before unscrewing the coolant
pressure relief cap. The cooling system
is under pressure. Steam and hot liquid
can come out forcefully when you loosen
the cap slightly. WARNING:
Do not add coolant
further than the MAX mark.
When the engine is cold, check the
concentration and level of the coolant at
the intervals listed in the scheduled
maintenance information. See Scheduled
Maintenance
(page 482).
Note: Make sure that the coolant level is
between the
MIN and the MAX marks on
the coolant reservoir. Note:
Coolant expands when it is hot. The
level may extend beyond the
MAX mark.
Maintain coolant concentration within
48% to 50%, which equates to a freeze
point between
-29°F (-34°C) and -35°F
(-37°C). Coolant concentration should be
checked using a refractometer. We do not
recommend the use of hydrometers or
coolant test strips for measuring coolant
concentration.
Adding Coolant WARNING:
Do not add engine
coolant when the engine is on or the
cooling system is hot. Failure to follow
this instruction could result in personal
injury. WARNING:
Do not remove the
coolant reservoir cap when the engine is
on or the cooling system is hot. Wait 10
minutes for the cooling system to cool
down. Cover the coolant reservoir cap
with a thick cloth to prevent the
possibility of scalding and slowly remove
the cap. Failure to follow this instruction
could result in personal injury. WARNING:
Do not put coolant in
the windshield washer reservoir. If
sprayed on the windshield, coolant could
make it difficult to see through the
windshield.
Note: Do not use stop leak pellets, cooling
system sealants, or non-specified additives
as they can cause damage to the engine
cooling or heating systems. Resulting
component damage may not be covered by
the vehicle Warranty.
Note: Automotive fluids are not
interchangeable.
331
Explorer (CTW), enUSA, Edition date: 202007, Second-Printing Maintenance

Follow your community's regulations and
standards for recycling and disposing of
automotive fluids.
Severe Climates
If you drive in extremely cold climates:
•
It may be necessary to increase the
coolant concentration above 50%.
• A coolant concentration of 60%
provides improved freeze point
protection.
• Coolant concentrations above 60%
decrease the overheat protection
characteristics of the coolant and may
cause engine damage.
If you drive in extremely hot climates:
• You can decrease the coolant
concentration to 40%.
• A coolant concentration of 40%
provides improved overheat protection.
• Coolant concentrations below 40%
decrease the overheat and corrosion
protection characteristics of the
coolant and may cause engine
damage.
Vehicles driven year-round in non-extreme
climates should use prediluted coolant for
optimum cooling system and engine
protection.
Coolant Change
At specific mileage intervals, as listed in
the scheduled maintenance information,
the coolant should be changed. Add
prediluted coolant approved to the correct
specification. See Capacities and
Specifications (page 391). Fail-Safe Cooling
Fail-safe cooling allows you to temporarily
drive your vehicle before any incremental
component damage occurs. The fail-safe
distance depends on ambient
temperature, vehicle load and terrain.
How Fail-Safe Cooling Works If the engine begins to overheat,
the coolant temperature gauge
moves toward the red zone:
A warning lamp illuminates and
a message may appear in the
information display.
If the engine reaches a preset
over-temperature condition, the engine
automatically switches to alternating
cylinder operation. Each disabled cylinder
acts as an air pump and cools the engine.
When this occurs, your vehicle still
operates, however:
• Engine power is limited.
• The air conditioning system turns off.
Continued operation increases the engine
temperature, causing the engine to
completely shut down. Your steering and
braking effort increases in this situation.
When the engine temperature cools, you
can re-start the engine. Have your vehicle
checked as soon as possible to minimize
engine damage.
When Fail-Safe Mode Is Activated WARNING: Fail-safe mode is for
use during emergencies only. Operate
your vehicle in fail-safe mode only as
long as necessary to bring your vehicle
to rest in a safe location and seek
immediate repairs. When in fail-safe
mode, your vehicle will have limited
power, will not be able to maintain
333
Explorer (CTW), enUSA, Edition date: 202007, Second-Printing Maintenance

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.
AUTOMATIC TRANSMISSION
FLUID CHECK
If required, have an authorized dealer check
and change the transmission fluid at the
correct service interval. See Scheduled
Maintenance (page 482).
The automatic transmission does not have
a transmission fluid dipstick.
Refer to your scheduled maintenance
information for scheduled intervals for fluid
checks and changes. Your transmission
does not consume fluid. However, if the
transmission slips, shifts slowly or if you
notice a sign of leaking fluid, contact an
authorized dealer.
Do not use supplemental transmission
fluid additives, treatments or cleaning
agents. The use of these materials may
affect transmission operation and result
in damage to internal transmission
components. BRAKE FLUID CHECK WARNING:
Do not use any fluid
other than the recommended brake fluid
as this will reduce brake efficiency. Use
of incorrect fluid could result in the loss
of vehicle control, serious personal injury
or death. WARNING:
Only use brake fluid
from a sealed container. Contamination
with dirt, water, petroleum products or
other materials may result in brake
system damage or failure. Failure to
adhere to this warning could result in the
loss of vehicle control, serious personal
injury or death. WARNING:
Do not allow the fluid
to touch your skin or eyes. If this
happens, rinse the affected areas
immediately with plenty of water and
contact your physician. WARNING:
The brake system
could be affected if the brake fluid level
is below the MIN mark or above the MAX
mark on the brake fluid reservoir.
335
Explorer (CTW), enUSA, Edition date: 202007, Second-Printing Maintenance

1. Park your vehicle on a level surface.
2. Look at the brake fluid reservoir to see
where the brake fluid level is relative
to the MIN and the MAX marks on the
reservoir.
Note: If the brake fluid level is between the
MIN
and the MAX marks on the reservoir, it
is acceptable.
Note: If the brake fluid level is below the
MIN
mark or above the MAX mark, have
your vehicle checked as soon as possible.
Note: To avoid fluid contamination, the
reservoir cap must remain in place and fully
tight, unless you are adding fluid.
Only use fluid that meets our
specifications. See
Capacities and
Specifications (page 385).
Brake Fluid Service Interval
Brake fluid absorbs water over time which
degrades the effectiveness of the brake
fluid. Change the brake fluid at the
specified intervals to prevent degraded
braking performance. For detailed interval information, see
Scheduled Maintenance in your Owner's
Manual or your local maintenance guide.
POWER STEERING FLUID
CHECK
Your vehicle is equipped with an electric
power steering (EPS) system. There is no
fluid reservoir to check or fill.
CHANGING THE 12V BATTERY
WARNING:
Batteries normally
produce explosive gases which can
cause personal injury. Therefore, do not
allow flames, sparks or lighted
substances to come near the battery.
When working near the battery, always
shield your face and protect your eyes.
Always provide correct ventilation. WARNING:
When lifting a
plastic-cased battery, excessive pressure
on the end walls could cause acid to flow
through the vent caps, resulting in
personal injury and damage to the
vehicle or battery. Lift the battery with a
battery carrier or with your hands on
opposite corners. WARNING:
Keep batteries out of
reach of children. Batteries contain
sulfuric acid. Avoid contact with skin,
eyes or clothing. Shield your eyes when
working near the battery to protect
against possible splashing of acid
solution. In case of acid contact with skin
or eyes, flush immediately with water for
a minimum of 15 minutes and get prompt
medical attention. If acid is swallowed,
call a physician immediately.
336
Explorer (CTW), enUSA, Edition date: 202007, Second-Printing MaintenanceE170684

Rotating your tires at the
recommended interval will help
your tires wear more evenly,
providing better tire performance
and longer tire life. Sometimes
irregular tire wear can be
corrected by rotating the tires. See
Scheduled Maintenance (page
485).
Tire Rotation Diagram
Rear-wheel drive and Four-wheel
drive vehicles, front tires at left of
diagram. USING SUMMER TIRES
Summer tires provide superior
performance on wet and dry roads.
Summer tires do not have the Mud and
Snow (M+S or M/S) tire traction rating on
the tire side wall. Since summer tires do
not have the same traction performance
as All-season or Snow tires, we do not
recommend using summer tires when
temperatures drop to approximately 45°F
(7°C)
or below (depending on tire wear
and environmental conditions) or in snow and ice conditions. Like any tire, summer
tire performance is affected by tire wear
and environmental conditions. If you must
drive in those conditions, we recommend
using Mud and Snow (M+S, M/S),
All-season or Snow tires.
Always store your summer tires indoors at
temperatures above
19°F (-7°C). The
rubber compounds used in these tires lose
flexibility and may develop surface cracks
in the tread area at temperatures below
19°F (-7°C)
. If the tires have been
subjected to 19°F (-7°C) or less, warm
them in a heated space to at least 41°F
(5°C) for at least 24 hours before installing
them on a vehicle, or moving the vehicle
with the tires installed, or checking tire
inflation. Do not place tires near heaters
or heating devices used to warm the room
where the tires are stored. Do not apply
heat or blow heated air directly on the tires.
Always inspect the tires after storage
periods and before use.
USING SNOW CHAINS WARNING: Do not exceed 30 mph
(50 km/h)
. Failure to follow this
instruction could result in the loss of
control of your vehicle, personal injury or
death. WARNING:
Do not use snow chains
on snow-free roads. WARNING:
Only fit snow chains to
specified tires. WARNING:
If your vehicle is fitted
with wheel trims, remove them before
fitting snow chains.
366
Explorer (CTW), enUSA, Edition date: 202007, Second-Printing Wheels and TiresE142548

MOTORCRAFT PARTS - 2.3L ECOBOOST™
Part Number
Component
FA-1884
Air filter.
FL-910-S
Oil filter. 1
BAGM-48H6-760
Battery. 2
SP-578
Spark plugs. 3
FP-89
Cabin air filter.
WW-2616 (driver side)
Windshield wiper blade.
WW-2113 (passenger side)
WW-1110
Rear window wiper blade.
1 If a Motorcraft oil filter is not available, use an oil filter that meets industry performance
specification SAE/USCAR-36.
2 See your authorized dealer for correct replacement.
3 For spark plug replacement, contact your authorized dealer. Replace the spark plugs
at the appropriate intervals. See Scheduled Maintenance (page 482).
We recommend Motorcraft replacement parts available at your authorized dealer or at
fordparts.com for scheduled maintenance. These parts engineered for your vehicle meet
or exceed our specifications. Use of other parts could impact vehicle performance,
emissions and durability. Your warranty could be void for any damage related to use of
other parts.
388
Explorer (CTW), enUSA, Edition date: 202007, Second-Printing Capacities and Specifications

MOTORCRAFT PARTS - 3.0L
Part Number
Component
FA-1884
Air filter.
FL-2062
Oil filter. 1
BAGM-48H6-760
Battery. 2
SP-578
Spark plugs. 3
FP-89
Cabin air filter.
WW-2616 (driver side)
Windshield wiper blade.
WW-2113 (passenger side)
WW-1110
Rear window wiper blade.
1 If a Motorcraft oil filter is not available, use an oil filter that meets industry performance
specification SAE/USCAR-36.
2 See your authorized dealer for correct replacement.
3 For spark plug replacement, contact an authorized dealer. Replace the spark plugs at
the appropriate intervals. See Scheduled Maintenance (page 482).
We recommend Motorcraft replacement parts available at your authorized dealer or at
fordparts.com for scheduled maintenance. These parts engineered for your vehicle meet
or exceed our specifications. Use of other parts could impact vehicle performance,
emissions and durability. Your warranty could be void for any damage related to use of
other parts.
389
Explorer (CTW), enUSA, Edition date: 202007, Second-Printing Capacities and Specifications

MOTORCRAFT PARTS - 3.3L
Part Number
Component
FA-1947
Air filter.
FL-500-S
Oil filter. 1
BAGM-48H6-760
Battery. 2
SP-520
Spark plugs. 3
FP-89
Cabin air filter.
WW-2616 (driver side)
Windshield wiper blade.
WW-2113 (passenger side)
WW-1110
Rear window wiper blade.
1 If a Motorcraft oil filter is not available, use an oil filter that meets industry performance
specification SAE/USCAR-36.
2 See your authorized dealer for correct replacement.
3 For spark plug replacement, contact your authorized dealer. Replace the spark plugs
at the appropriate intervals. See Scheduled Maintenance (page 482).
We recommend Motorcraft replacement parts available at your authorized dealer or at
fordparts.com for scheduled maintenance. These parts engineered for your vehicle meet
or exceed our specifications. Use of other parts could impact vehicle performance,
emissions and durability. Your warranty could be void for any damage related to use of
other parts.
390
Explorer (CTW), enUSA, Edition date: 202007, Second-Printing Capacities and Specifications