ignition FORD EXPLORER 2021 Workshop Manual

HYBRID VEHICLE FREQUENTLY ASKED QUESTIONS
Answer
Question
The high voltage battery is electrically isol-ated from the rest of the vehicle when the
key is off. When you switch the key on, high voltage contactors inside the battery are
closed to make the electricity available to the motor and generator and enable the
vehicle to drive. The clicks are the sound of these contactors as they close and open during start up and shut down.
What are the series of clicks from the cargo
area when I first turn the key in the ignition?
The vehicle's computer determines if an
engine start is required at key-on. Silent key starts the engine if it is necessary for cabin
heating, windshield defrost, or if the outside temperature is low.
Why does the engine sometimes start at
key-on?
There are several reasons the engine stayson for an extended amount of time when
you first start it. One common reason is to
make sure that the emissions components are warm enough to minimize tailpipe
emissions. As the climate gets cooler, this engine-on time is extended.
Why does it take a long time before the
engine shuts down?
In order to make sure that the climate
control system can begin heating the cabin
or defrosting the windshield as soon as you request it, the engine coolant temperature
has to be kept sufficiently hot. Keeping the
engine on is required to maintain the correct coolant temperature.
Why does my engine stay on when it is
extremely cold outside?
Your hybrid vehicle can use E15 fuel (15%ethanol, 85% gasoline), but you couldnotice slightly reduced fuel economy
because ethanol contains less energy per
gallon than gasoline. Your hybrid vehicle is not designed to use E85 (85% ethanol).
Can I put E15 or E85 in my vehicle, and how
will it affect my fuel economy?
The high voltage battery system is designedto last the life of the vehicle and requires no maintenance.
How long will my high voltage battery last?
Does it need maintenance?
184
Explorer (CTW), enUSA, Edition date: 202007, Second-Printing Unique Driving Characteristics

If your vehicle runs out of fuel:
•
Add a minimum of 1.3 gal (5 L) of fuel
to restart the engine.
• You may need to switch the ignition
from off to on several times after
refueling to allow the fuel system to
pump the fuel from the tank to the
engine. When restarting, cranking time
takes a few seconds longer than
normal.
Note: If your vehicle is on a steep slope,
more fuel may be required.
Filling a Portable Fuel Container WARNING:
Flow of fuel through a
fuel pump nozzle can produce static
electricity. This can cause a fire if you are
filling an ungrounded fuel container.
Use the following guidelines to avoid
electrostatic charge build-up, which can
produce a spark, when filling an
ungrounded fuel container:
• Only use an approved fuel container to
transfer fuel to your vehicle. Place the
container on the ground when filling it.
• Do not fill a fuel container when it is
inside your vehicle (including the cargo
area).
• Keep the fuel pump nozzle in contact
with the fuel container when filling it.
• Do not use a device that holds the fuel
pump nozzle lever in the fill position. Adding Fuel From a Portable Fuel
Container WARNING: Do not insert the nozzle
of a fuel container or an aftermarket
funnel into the fuel filler neck. This may
damage the fuel system filler neck or its
seal and cause fuel to run onto the
ground. WARNING:
Do not try to pry open
or push open the capless fuel system
with foreign objects. This could damage
the fuel system and its seal and cause
injury to you or others. WARNING:
Do not dispose of fuel
in the household refuse or the public
sewage system. Use an authorized waste
disposal facility.
When refueling the vehicle fuel tank from
a fuel container, use the fuel filler funnel
included with your vehicle. See Fuel Filler
Funnel Location
(page 187).
Note: Do not use aftermarket funnels as
they may not work with the capless fuel
system and can damage it.
When refueling the vehicle fuel tank from
a fuel container, do the following:
1. Fully open the fuel filler door.
2. Fully insert the fuel filler funnel into the
fuel filler inlet.
188
Explorer (CTW), enUSA, Edition date: 202007, Second-Printing Fuel and Refueling

3. Apply the parking brake.
4. Fully open the fuel filler door.
5. Check the fuel tank filler valve for any
debris that may be restricting its
movement.
6. Remove any debris from the fuel tank filler valve.
7. Fully insert a fuel pump nozzle or the fuel filler funnel provided with your
vehicle into the fuel filler pipe. See
Fuel Filler Funnel Location (page
187). This action should dislodge any
debris that may be preventing the fuel
tank filler valve from fully closing.
8. Remove the fuel pump nozzle or fuel filler funnel from the fuel filler pipe.
9. Fully close the fuel filler door.
Note: The message may not immediately
reset. If the message continues to appear
and a warning lamp illuminates, see your
authorized dealer as soon as possible.
REFUELING - HYBRID
ELECTRIC VEHICLE (HEV) WARNING: When refueling always
shut the engine off and never allow
sparks or open flames near the fuel tank
filler valve. Never smoke or use a cell
phone while refueling. Fuel vapor is
extremely hazardous under certain
conditions. Avoid inhaling excess fumes. WARNING:
The fuel system may
be under pressure. If you hear a hissing
sound near the fuel filler inlet, do not
refuel until the sound stops. Otherwise,
fuel may spray out, which could cause
serious personal injury. WARNING:
Do not pry open the
fuel tank filler valve. This could damage
the fuel system. Failure to follow this
instruction could result in fire, personal
injury or death. WARNING: Do not remove the fuel
pump nozzle from its fully inserted
position when refueling. WARNING:
Stop refueling when
the fuel pump nozzle automatically
shuts off for the first time. Failure to
follow this will fill the expansion space
in the fuel tank and could lead to fuel
overflowing. WARNING:
Do not overfill the fuel
tank. The pressure in an overfilled tank
may cause leakage and lead to fuel spray
and fire. WARNING:
Wait at least five
seconds before removing the fuel pump
nozzle to allow any residual fuel to drain
into the fuel tank. WARNING: Read and follow all the
instructions on the pump island.
1. When you stop your vehicle, shift into park (P) and switch the ignition off. 192
Explorer (CTW), enUSA, Edition date: 202007, Second-Printing Fuel and RefuelingE293006

Description and Action
Message
A warning message appears
in the information display
when the fuel system fails
to depressurize or the fuel
filler door fails to open. You
may have to use the fuel
filler door manual override
lever.
Refuel
Error See
Manual
If the information message appears, do the
following:
1. Check the fuel filler door for anything that may be obstructing its movement,
for example ice or snow.
2. Remove any obstruction from the fuel filler door.
3. Press the button on the driver door to open the fuel filler door.
4. If the fuel filler door fails to open and the information message remains in
the information display, use the fuel
filler door manual override lever.
Fuel Filler Door Manual Override
Lever WARNING: The fuel system may
be under pressure. If you hear a hissing
sound near the fuel filler inlet, do not
refuel until the sound stops. Otherwise,
fuel may spray out, which could cause
serious personal injury.
Note: The transmission must be in park (P)
or neutral (N).
When using the manual override lever do
the following:
1. Switch the ignition on. Note:
The manual override lever is in the
driver side rear wheel well area.
2. Pull the manual override lever.
3. Switch the ignition off.
4. Complete the refueling process within 20 minutes.
FUEL CONSUMPTION
Advertised Capacity
The advertised capacity is the maximum
amount of fuel that you can add to the fuel
tank when the fuel gauge indicates empty.
See
Capacities and Specifications
(page 391).
194
Explorer (CTW), enUSA, Edition date: 202007, Second-Printing Fuel and RefuelingE297793

•
Incorrect fuel for climatic conditions.
• Incorrect engine oil viscosity for
climactic conditions.
Note: Some vehicles have a lifetime fuel
filter that is integrated with the fuel tank.
Regular maintenance or replacement is not
needed.
Note: If these checks do not help you
correct the concern, have your vehicle
checked as soon as possible.
Noise Emissions Warranty,
Prohibited Tampering Acts and
Maintenance
On January 1, 1978, Federal regulation
became effective governing the noise
emission on trucks over 10,000 lb
(4,536 kg) Gross Vehicle Weight Rating
(GVWR). The preceding statements
concerning prohibited tampering acts and
maintenance, and the noise warranty
found in the Warranty Guide, are
applicable to complete chassis cabs over
10,000 lb (4,536 kg)
GVWR.
CATALYTIC CONVERTER 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.
Your vehicle has various emission control
components and a catalytic converter that
enables it to comply with applicable
exhaust emission standards.
To make sure that the catalytic converter
and other emission control components
continue to work properly:
• 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 300).
• Use only the specified fuel listed.
• 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: Resulting component damage may
not be covered by the vehicle Warranty.
The scheduled maintenance items listed
in scheduled maintenance information are
essential to the life and performance of
your vehicle and to its emissions system.
If you use anything other than Ford,
Motorcraft or Ford-authorized parts for
maintenance replacements or for service
of components affecting emission control,
such non-Ford parts should be equivalent
to genuine Ford Motor Company parts in
performance and durability.
197
Explorer (CTW), enUSA, Edition date: 202007, Second-Printing Engine Emission Control

Your vehicle may not pass the I/M test if
the service engine soon indicator is on or
not working properly (bulb is burned out),
or if the OBD-II system has determined
that some of the emission control systems
have not been properly checked. In this
case, the vehicle is not ready for I/M
testing.
If the vehicle
’s engine or transmission has
just been serviced, or the battery has
recently run down or been replaced, the
OBD-II system may indicate that the
vehicle is not ready for I/M testing. To
determine if the vehicle is ready for I/M
testing, turn the ignition key to the on
position for 15 seconds without cranking
the engine. If the service engine soon
indicator blinks eight times, it means that
the vehicle is not ready for I/M testing; if
the service engine soon indicator stays on
solid, it means that your vehicle is ready
for I/M testing.
The OBD-II system checks the emission
control system during normal driving. A
complete check may take several days.
If the vehicle is not ready for I/M testing,
you can perform the following driving cycle
consisting of mixed city and highway
driving:
1. 15 minutes of steady driving on an expressway or highway followed by 20
minutes of stop-and-go driving with at
least four 30-second idle periods.
2. Allow your vehicle to sit for at least eight hours with the ignition off. Then,
start the vehicle and complete the
above driving cycle. The vehicle must
warm up to its normal operating
temperature. Once started, do not turn
off the vehicle until the above driving
cycle is complete.
If the vehicle is still not ready for I/M
testing, you need to repeat the above
driving cycle.
199
Explorer (CTW), enUSA, Edition date: 202007, Second-Printing Engine Emission Control

GENERAL INFORMATION -
HYBRID ELECTRIC VEHICLE
(HEV)
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.
Your vehicle consists of various
high-voltage components and wiring. All
of the high-voltage power flows through
specific wiring assemblies labeled as such
or covered with a solid orange convolute,
or orange striped tape, or both. Do not
come in contact with these components. The high-voltage battery system is a
high-voltage, lithium-ion battery system.
The pack is located underneath the vehicle.
The high voltage battery system uses an
advanced active liquid heating and cooling
system to regulate high voltage battery
temperature and help maximize the life of
the high voltage battery.
Note:
The high-voltage battery does not
require regular service maintenance.
200
Explorer (CTW), enUSA, Edition date: 202007, Second-Printing High Voltage Battery
(If Equipped)

AUTOMATIC TRANSMISSION
WARNING: Always fully apply the
parking brake and make sure you shift
into park (P). Failure to follow this
instruction could result in personal injury
or death. WARNING:
Do not apply the brake
pedal and accelerator pedal
simultaneously. Applying both pedals
simultaneously for more than a few
seconds will limit engine performance,
which may result in difficulty maintaining
speed in traffic and could lead to serious
injury.
Note: You may not be able to shift out of
park (P) unless the intelligent access key is
inside your vehicle.
Understanding Your Transmission
Selector Positions
Your vehicle has an electronic transmission
shifter. The transmission selector is on the
center console. Park.
P
Reverse.
R
Neutral.
N
Drive.
D
Manual.
M
LowL
The instrument cluster displays the current
gear.
Note: Your vehicle could come with low (L)
or manual (M) in the center of the selector
depending on trim level.
Park (P)
With the transmission in park (P), your
vehicle locks the transmission and
prevents the wheels from turning. Always
come to a complete stop before putting
your vehicle into and out of park (P).
When you switch the ignition off, your
vehicle shifts into park (P). If you switch
the ignition off while your vehicle is moving,
the transmission first shifts into neutral (N)
until it reaches a speed less than
3 mph
(5 km/h) and then shifts into park (P).
201
Explorer (CTW), enUSA, Edition date: 202007, Second-Printing TransmissionE227917

The electric parking brake may apply when
you shift to park (P) without the brake
pedal fully pressed. The electric parking
brake applies when you shift to park (P)
on large slopes. The electric parking brake
releases with the drive away release
function or manually as described in the
Releasing the Electric Parking Brake
section. See Electric Parking Brake
(page 215).
Note: A warning tone sounds if you open
the driver door and you have not shifted the
transmission selector to park (P).
Reverse (R)
With the transmission selector in reverse
(R), your vehicle moves backward. Always
come to a complete stop before shifting
into and out of reverse (R).
Neutral (N)
With the transmission selector in neutral
(N), you can start your vehicle and it is free
to roll. Hold the brake pedal down when in
this position.
Drive (D)
Drive (D) is the normal driving position for
the best fuel economy and smoothness.
Shift the transmission selector to drive (D)
to allow your vehicle to move forward and
shift automatically through the forward
gears.
The transmission shifts to the appropriate
gear for optimum performance based on
ambient temperature, road slope, vehicle
load and your input. Manual Mode (M) - Vehicles with
Paddle Shifters
With the transmission selector in manual
(M), the driver can change gears up or
down. After selecting the Manual (M)
button while the transmission range
selector is in Drive (D) position you now
have control of selecting the gear you
desire using shift buttons on the steering
wheel. See Understanding your SelectShift
Automatic
™ transmission later in this
section.
To exit manual mode, push the manual
(M) button on your transmission selector.
Low (L) - Vehicles without Paddle
Shifters
With the transmission selector in low (L),
your vehicle provides maximum engine
braking. You can shift the transmission into
low (L) at any vehicle speed. The intent is
not for use under extended or normal
driving conditions, and results in lower fuel
economy.
Automatic Return to Park
Note: This feature does not operate when
your vehicle is in Stay in Neutral mode or
neutral tow.
The transmission returns to park (P) if any
of the following occur:
• You switch the ignition off.
• Your seatbelt is not fastened, and you
open the driver door.
• The driver door is open, and you
unfasten your seatbelt.
If you switch the ignition off when your
vehicle is moving, your vehicle shifts into
neutral (N) until it slows down enough to
shift into park (P).
202
Explorer (CTW), enUSA, Edition date: 202007, Second-Printing Transmission

WARNING: If the parking brake is
fully released, but the brake warning
lamp remains illuminated, the brakes
may not be working properly. Have your
vehicle checked as soon as possible. WARNING:
Do not drive your
vehicle until you verify that the
stoplamps are working.
Use the manual park release to move your
transmission from the park (P) position in
the event of an electrical malfunction or
emergency.
Activating the Manual Park Release
Cable 1.
Apply the parking brake. See Electric
Parking Brake
(page 215).
Note: If the vehicle battery is dead, for
example, no electrical power is available,
you require an external power to apply the
parking brake.
2. Using the key or a flat head screwdriver,
maximum length
5 in (120 mm), as
shown in the picture, carefully open the
access cover under the arm rest
console.
See Keys and Remote
Controls (page 57). 3. Turn the vehicle ignition on without
starting the vehicle by pressing the
ignition push to start without pressing
the brake.
4. Once in the driver seat, fully apply the brake pedal and hold. Do not release. Note:
A:
2.0 in (50 mm) B: 0.1 in (3.3 mm)
5. Insert a screwdriver type tool, see description, or your car key into the
Manual Park Release (MPR) lever slot.
Pull the manual park release lever
toward the rear until the detent in the
slot pops up, against the tool or key.
Allow full upward travel of detent,
approximately
0.28 in (7 mm) in the
park override mode (Click). You can
remove the tool. If done correctly, a
message on the instrument cluster
displays Park Not Available,
Transmission Not in Park, or Shift
System Fault.
6. With your foot still fully applied on the
brake pedal, disengage the parking
brake.
See Electric Parking Brake
(page 215).
7. Your vehicle remains in neutral (N) for emergency towing purposes.
8. Switch off the ignition.
9. Once safe, and there is no risk of your vehicle rolling, disconnect the negative
(black) battery cable from the battery.
205
Explorer (CTW), enUSA, Edition date: 202007, Second-Printing TransmissionE292050 E317360