coolant temperature FORD EXPLORER 2021 User Guide

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?
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Explorer (CTW), enUSA, Edition date: 202007, Second-Printing Unique Driving Characteristics

REDUCED ENGINE
PERFORMANCE
WARNING: If you continue to drive
your vehicle when the engine is
overheating, the engine could stop
without warning. Failure to follow this
instruction could result in the loss of
control of your vehicle.
If the engine coolant temperature gauge
needle moves to the upper limit position,
the engine is overheating. See Gauges
(page 106).
You must only drive your vehicle for a short
distance if the engine overheats. The
distance you can travel depends on
ambient temperature, vehicle load and
terrain. The engine continues to operate
with limited power for a short period of
time.
If the engine temperature continues to rise,
the fuel supply to the engine reduces. The
air conditioning switches off and the engine
cooling fan operates continually.
1. Gradually reduce your speed and stop your vehicle as soon as it is safe to do
so.
2. Immediately switch the engine off to prevent severe engine damage.
3. Wait for the engine to cool down.
4. Check the coolant level. See
Engine
Coolant Check (page 331).
5. Have your vehicle checked as soon as possible.
ECONOMICAL DRIVING
Fuel economy is affected by several things
such as how you drive, the conditions you
drive under and how you maintain your
vehicle. You may improve your fuel economy by
keeping these things in mind:
•
Accelerate and slow down in a smooth,
moderate fashion.
• Drive at steady speeds.
• Anticipate stops; slowing down may
eliminate the need to stop.
• Combine errands and minimize
stop-and-go driving.
• Close the windows for high-speed
driving.
• Drive at reasonable speeds (traveling
at
55 mph (88 km/h) uses 15% less
fuel than traveling at 65 mph
(105 km/h)).
• Keep the tires properly inflated and use
only the recommended size.
• Use the recommended engine oil.
• Perform all regularly scheduled
maintenance.
Avoid these actions; they reduce your fuel
economy:
• Sudden accelerations or hard
accelerations.
• Revving the engine before switching it
off.
• Idle for periods longer than one minute.
• Warm up your vehicle on cold
mornings.
• Use the air conditioner or front
defroster.
• Use the speed control in hilly terrain.
• Rest your foot on the brake pedal while
driving.
• Drive a heavily loaded vehicle or tow a
trailer.
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Protected Component
Fuse Rating
Fuse or Relay
Number
High voltage positive temperature coeffi-
cient heater (hybrid electric vehicle).
Traction battery coolant proportional valve
(hybrid electric vehicle).
10A
98
Not used (spare).
50A
103
Not used (spare).
50A
104
Not used (spare).
40A
105
Not used (spare).
40A
106
Not used (spare).
40A
107
Not used (spare).
20A
108
Passenger door module.
30A
109
Body control module voltage quality
monitor feed.
30A
111
Not used (spare).
20A
112
Not used (spare).
50A
114
Amplifier.
20A
115
Not used (spare).
5A
116
Second row heated seats.
30A
118
Port fuel injectors.
15A
120
Rain sensor.
5A
124
USB smart charger 1.
5A
125
Amplifier.
20A
127
Not used (spare).
15A
128
Power folding seat module.
40A
131
Heated wiper park.
15A
133
Family entertainment system.
10A
134
Not used (spare).
20A
136
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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
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high-speed operation, and may
completely shut down without warning,
potentially losing engine power, power
steering assist, and power brake assist,
which may increase the possibility of a
crash resulting in serious 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.
Your vehicle has limited engine power
when in the fail-safe mode, drive your
vehicle with caution. Your vehicle does not
maintain high-speed operation and the
engine may operate poorly.
Remember that the engine is capable of
automatically shutting down to prevent
engine damage. In this situation:
1. Pull off the road as soon as safely possible and switch the engine off.
2. If you are a member of a roadside assistance program, we recommend
that you contact your roadside
assistance service provider.
3. If this is not possible, wait for a short period of time for the engine to cool.
4. Check the coolant level. If the coolant level is at or below the minimum mark,
add prediluted coolant immediately.
5. When the engine temperature cools, you can re-start the engine. Have your
vehicle checked as soon as possible to
minimize engine damage.
Note: Driving your vehicle without repair
increases the chance of engine damage. Engine Coolant Temperature
Management
(If Equipped) WARNING:
To reduce the risk of
crash and injury, be prepared that the
vehicle speed may reduce and the
vehicle may not be able to accelerate
with full power until the coolant
temperature reduces.
If you tow a trailer with your vehicle, the
engine may temporarily reach a higher
temperature during severe operating
conditions, for example ascending a long
or steep grade in high ambient
temperatures.
At this time, you may notice the coolant
temperature gauge moves toward the red
zone and a message may appear in the
information display.
You may notice a reduction in vehicle
speed caused by reduced engine power in
order to manage the engine coolant
temperature. Your vehicle may enter this
mode if certain high-temperature and
high-load conditions take place. The
amount of speed reduction depends on
vehicle loading, grade and ambient
temperature. If this occurs, there is no
need to stop your vehicle. You can
continue to drive.
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:
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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.
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Body
•
Wash your vehicle thoroughly to
remove dirt, grease, oil, tar or mud from
exterior surfaces, rear-wheel housing
and the underside of front fenders.
• Periodically wash your vehicle if it is
stored in exposed locations.
• Touch-up exposed or primed metal to
prevent rust.
• Cover chrome and stainless steel parts
with a thick coat of auto wax to prevent
discoloration. Re-wax as necessary
when you wash your vehicle.
• Lubricate all hood, door and luggage
compartment hinges and latches with
a light grade oil.
• Cover interior trim to prevent fading.
• Keep all rubber parts free from oil and
solvents.
Engine
• Change the engine oil and filter prior to
storage because used engine oil
contains contaminates which may
cause engine damage.
• Start the engine every 15 days for a
minimum of 15 minutes. Run at fast
idle with the climate controls set to
defrost until the engine reaches normal
operating temperature.
• With your foot on the brake, shift
through all the gears while the engine
is running.
• We recommend that you change the
engine oil before you use your vehicle
again.
Fuel system
• Fill the fuel tank with high-quality fuel
until the first automatic shutoff of the
fuel pump nozzle. Cooling system
•
Protect against freezing temperatures.
• When removing your vehicle from
storage, check coolant fluid level.
Confirm that there are no cooling
system leaks and that fluid is at the
recommended level.
Disconnecting Your 12 Volt Battery
• Check and recharge as necessary. Keep
connections clean.
• If storing your vehicle for more than 30
days without recharging the battery,
we recommend that you disconnect
the battery cables to maintain battery
charge for quick starting.
Note: It is necessary to reset memory
features if you disconnect the battery
cables.
Plugging in Your HYBRID
We recommend the following options for
your plug-in vehicle (PHEV) :
• Leave your vehicle plugged in. The 12
volt battery maintains power if left
plugged in. However, this periodically
uses electricity from the household
outlet.
• Connect a battery charger to your 12
volt battery and leave it on a
continuous, slow charge.
• Disconnect the 12 volt battery. If your
12 volt battery is located in the luggage
compartment, do not fully shut the
luggage compartment after
disconnecting the 12 volt battery. Only
leave the luggage compartment open
if your vehicle is stored in a locked
location.
Brakes
• Make sure the brakes and parking brake
release fully.
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Explorer (CTW), enUSA, Edition date: 202007, Second-Printing Vehicle Care

Engine Coolant
Capacities
Quantity
Variant
15.2 qt (14.4 L)
Engine.
4.6 qt (4.4 L)
HEV low temperature cooling loop (battery
and electric motor electronics).
Materials Specification
Name
WSS-M97B57-A2
Motorcraft® Yellow Prediluted Antifreeze/
Coolant(U.S.)
Motorcraft® Yellow Prediluted Antifreeze/Coolant
/ Antigel/liquide de refroidissement prédilué jaune
Motorcraft®(Canada)
VC-13DL-G(U.S.)
CVC-13DL-G(Canada)
Engine Oil An oil that displays this symbol conforms
to current engine, emission system and
fuel economy performance standards of
ILSAC.
We recommend Motorcraft® motor oil for
your vehicle. If Motorcraft® oil is not
available, use motor oils of the
recommended viscosity grade that meet
API SP requirements and display the API
Certification Mark for gasoline engines.
Do not use supplemental engine oil
additives because they are unnecessary
and could lead to engine damage that your
vehicle warranty does not cover.
Capacities Including the Oil Filter
Variant
6.0 qt (5.7 L)
All.
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Proper Driver and Front Passenger Seating
Adjustment........................................................ 47
Driver and Passenger Knee Airbags.........51
Driving Aids....................................................259
Driving Hints..................................................295
Driving Through Water..............................296
DRL See: Daytime Running Lamps - Vehicles With:
Configurable Daytime Running
Lamps................................................................. 89
See: Daytime Running Lamps - Vehicles With: Daytime Running Lamps (DRL)................89
E
Economical Driving
.....................................295
Electric Parking Brake.................................215
Applying the Electric Parking Brake.............215
Automatically Releasing the Electric
Parking Brake.................................................. 216
Manually Releasing the Electric Parking Brake................................................................... 216
Releasing the Electric Parking Brake if the Vehicle Battery is Running Out of
Charge................................................................ 217
Electric Vehicle Information
....................460
Engine On Due To............................................... 461
Power Flow.......................................................... 460
Vehicle Operational States........................... 460
Electromagnetic Compatibility
..............530
Emergency Call Limitations.......................56
Emergency Call Requirements.................55
Emergency Call System Data.....................18
Emission Law
.................................................196
Noise Emissions Warranty, Prohibited
Tampering Acts and Maintenance..........197
Tampering With a Noise Control System.............................................................. 196
End User License Agreement..................533 VEHICLE SOFTWARE END USER LICENSE
AGREEMENT (EULA) ................................. 533
Engine Block Heater
.....................................178
Using the Engine Block Heater...................... 179
Engine Coolant Check.................................331 Adding Coolant.................................................... 331
Coolant Change.................................................. 333
Engine Coolant Temperature Management.................................................. 334Fail-Safe Cooling...............................................
333
Recycled Coolant............................................... 332
Severe Climates................................................. 333
Engine Emission Control...........................196
Engine Immobilizer See: Passive Anti-Theft System..................... 78
Engine Oil Check..........................................326 Adding Engine Oil............................................... 327
Engine Oil Dipstick - 2.3L EcoBoost™.................................................326
Engine Oil Dipstick - 3.0L.........................326
Engine Oil Dipstick - 3.3L..........................326
Engine Specifications - 2.3L EcoBoost™.................................................382
Drivebelt Routing............................................... 382
Engine Specifications - 3.0L, ST
............383
Drivebelt Routing............................................... 384
Engine Specifications - 3.0L...................383 Drivebelt Routing............................................... 383
Engine Specifications - 3.3L, Gasoline.......................................................385
Drivebelt Routing............................................... 385
Engine Specifications - 3.3L, Hybrid Electric Vehicle (HEV)............................386
Drivebelt Routing............................................... 386
Entertainment...............................................441 AM/FM Radio...................................................... 442
Apps....................................................................... 450
Bluetooth Stereo or USB................................ 449
CD........................................................................\
... 448
HD Radio ™ Information (If
Available)........................................................ 445
SiriusXM® Satellite Radio (If Activated)........................................................ 443
Sources.................................................................. 442
Supported Media Players, Formats and Metadata Information................................ 450
USB Ports............................................................. 450
Environment.....................................................19
EPB See: Electric Parking Brake.............................. 215
Essential Towing Checks..........................292 Before Towing a Trailer.................................... 293
Hitches................................................................... 292
Launching or Retrieving a Boat or Personal Watercraft (PWC)........................................ 293
Safety Chains...................................................... 292
Trailer Brakes....................................................... 292
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Trailer Lamps.......................................................
292
When Towing a Trailer..................................... 293
Event Data.........................................................16
Export Unique Options.................................14
Exterior Mirrors - Excluding: ST.................97 360-Degree Camera.......................................... 98
Auto-dimming Feature...................................... 98
Auto-Folding Mirrors .......................................... 97
Blind Spot Information System...................... 98
Direction Indicator Mirrors ............................... 98
Fold-Away Exterior Mirrors............................... 97
Heated Exterior Mirrors ..................................... 98
Memory Mirrors ................................................... 98
Power Exterior Mirrors......................................... 97
Puddle Lamps....................................................... 98
Exterior Mirrors - ST......................................98 Auto-dimming Feature.................................... 100
Auto-Folding Mirrors........................................... 99
Blind Spot Information System.................... 100
Direction Indicator Mirrors.............................. 100
Fold-Away Exterior Mirrors............................... 99
Heated Exterior Mirrors.................................... 100
Memory Mirrors................................................... 100
Power Exterior Mirrors........................................ 98
Puddle Lamps..................................................... 100
F
Fastening the Seatbelts..............................39
Seatbelt Locking Modes................................... 40
Using Seatbelts During Pregnancy................39
Flat Tire See: Changing a Road Wheel........................ 374
Floor Mats.......................................................297
Fog Lamps - Front See: Front Fog Lamps........................................ 89
Ford Credit
..........................................................11
US Only...................................................................... 11
Ford Protect..................................................480 Ford Protect Extended Service Plan
(CANADA ONLY)........................................... 481
Ford Protect Extended Service Plans (U.S. Only)................................................................. 480
Four-Wheel Drive.........................................207 Principle of Operation...................................... 207
Front Fog Lamps
............................................89
Front Fog Lamp Indicator................................. 90Switching the Front Fog Lamps On or
Off........................................................................\
. 89
Front Parking Aid
..........................................232
Object Distance Indicator............................... 233
Front Passenger Sensing System
............48
Front Wiper Blades See: Changing the Front Wiper Blades......340
Fuel and Refueling.......................................185
Fuel Consumption.......................................194 Advertised Capacity.......................................... 194
Calculating Fuel Economy.............................. 195
Fuel Filler Funnel Location........................187
Fuel Filter........................................................340
Fuel Quality - E85........................................185 Choosing the Right Fuel - Flex Fuel
Vehicles............................................................. 185
Switching Between E85 and Gasoline............................................................ 186
Fuel Quality - Gasoline...............................187 Choosing the Right Fuel................................... 187
Fuel Shutoff
..................................................299
Fuses..................................................................312
Fuse Specification Chart............................312 Engine Compartment Fuse Box.................... 312
Passenger Compartment Fuse Panel.........317
G
Garage Door Opener...................................162
Garage Door Opener See: Universal Garage Door Opener............162
Gauges - Vehicles With: 12.3 Inch Instrument Cluster Display
Screen...........................................................104
Distance to Empty............................................. 106
Engine Coolant Temperature Gauge..........106
Fuel Gauge............................................................ 105
Gauge Display...................................................... 105
Information Bar................................................... 105
Information Display........................................... 105
Low Fuel Reminder............................................ 105
Gauges - Vehicles With: 4.2 Inch Instrument Cluster Display
Screen...........................................................106
Engine Coolant Temperature Gauge...........107
Fuel Gauge............................................................ 107
Information Display............................................ 107
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Explorer (CTW), enUSA, Edition date: 202007, Second-Printing Index