coolant reservoir FORD EXPLORER 2018 Owners Manual

Engine Coolant Temperature
Gauge
Shows the temperature of the engine
coolant. At normal operating temperature,
the needle remains in the center section.
If the needle enters the red section, the
engine is overheating. Stop the engine,
switch the ignition off and determine the
cause once the engine has cooled down.
Note:
Do not restart the engine until the
cause of the overheating has been resolved. WARNING: Do not remove the
coolant reservoir cap when 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.
Fuel Gauge
The fuel gauge indicates about how much
fuel is in the fuel tank.
The arrow adjacent to the fuel pump
symbol indicates on which side of your
vehicle the fuel filler door is located.
Note: The fuel gauge may vary slightly
when your vehicle is moving or on a slope.
Low Fuel Reminder
A low fuel level reminder displays and
sounds when the distance to empty
reaches
75 mi (120 km) to empty for
MyKey, and at 50 mi (80 km), 25 mi
(40 km), 10 mi (20 km) and 0 mi (0 km)
for all vehicle keys.
Note: The low fuel reminder can appear at
different fuel gauge positions depending on
fuel economy conditions. This variation is
normal. WARNING LAMPS AND
INDICATORS
The following warning lamps and
indicators alert you to a vehicle condition
that may become serious. Some lamps
illuminate when you start your vehicle to
make sure they work. If any lamps remain
on after starting your vehicle, refer to the
respective system warning lamp for further
information.
Note:
Some warning indicators appear in
the information display and function the
same as a warning lamp, but do not display
when you start your vehicle.
Adaptive Cruise Control
(If Equipped) The speed control system
indicator light changes color to
indicate what mode the system
is in. See Using Adaptive Cruise Control
(page
221).
On (white light): Illuminates when you
switch on the adaptive cruise control
system. Turns off when the speed control
system is turned off.
Engaged (green light): Illuminates when
you engage the adaptive cruise control
system. Turns off when you disengage the
speed control system.
Anti-Lock Braking System If it illuminates when you are
driving, this indicates a
malfunction. You continue to
have the normal braking system (without
ABS) unless the brake system warning
lamp is also illuminated. Have the system
checked by an authorized dealer.
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Engine coolant reservoir. See
Engine Coolant Check (page
291).
A
Engine oil dipstick. See
Engine
Oil Dipstick (page 288).
B
Engine oil filler cap. See Engine
Oil Check
(page 289).
C
Brake fluid reservoir. See
Brake
Fluid Check (page 297).
D Battery. See
Changing the 12V
Battery (page 298).
E
Engine compartment fusebox.
See
Changing a Fuse (page
282).
F
Air filter assembly. See
Changing the Engine Air Filter
(page
308).
G
Windshield washer fluid
reservoir. See
Washer Fluid
Check (page 298).
H
UNDER HOOD OVERVIEW - 3.5L DURATEC
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Engine coolant reservoir. See
Engine Coolant Check (page
291).
A
Brake fluid reservoir. See
Brake
Fluid Check (page 297).
B
Battery. See
Changing the 12V
Battery (page 298).
C
Engine compartment fusebox.
See
Fuse Specification Chart
(page 273).
D
Air filter assembly. See
Changing the Engine Air Filter
(page
308).
E Automatic transmission fluid
dipstick. See
Automatic
Transmission Fluid Check
(page
295).
F
Engine oil dipstick. See
Engine
Oil Dipstick (page 289).
G
Engine oil filler cap. See Engine
Oil Check
(page 289).
H
Windshield washer fluid
reservoir. See
Washer Fluid
Check (page 298).
I
UNDER HOOD OVERVIEW - 3.5L ECOBOOST™
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ABCD
E223186

Engine coolant reservoir. See
Engine Coolant Check (page
291).
A.
Engine oil filler cap.
See Engine
Oil Check (page 289).
B.
Engine oil dipstick.
See Engine
Oil Dipstick (page 289).
C.
Brake fluid reservoir.
See Brake
Fluid Check (page 297).
D.
Battery.
See Changing the 12V
Battery (page 298).
E.
Engine compartment fuse box.
See
Fuses (page 273).
F.
Air filter assembly. See
Changing the Engine Air Filter
(page
308).
G.
Automatic transmission dipstick.
See
Automatic Transmission
Fluid Check (page 295).
H.
Washer fluid reservoir. See
Washer Fluid Check (page 298).
I. ENGINE OIL DIPSTICK - 2.3L
ECOBOOST™
Minimum.
A
Maximum.
B
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AB

ENGINE COOLANT CHECK
WARNING: Do not remove the
coolant reservoir cap when 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 499).
Note: Make sure that the coolant level is
between the
MIN and 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 hot. Failure to
follow this instruction could result in
personal injury. WARNING:
Do not remove the
coolant reservoir cap when 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.
Note: Automotive fluids are not
interchangeable. Take care not to put
engine coolant in the windshield washer
fluid reservoir or windshield washer fluid in
the engine coolant reservoir.
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.
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It is very important to use prediluted
coolant approved to the correct
specification in order to avoid plugging the
small passageways in the engine cooling
system. See Capacities and
Specifications (page 343). Do not mix
different colors or types of coolant in your
vehicle. Mixing of engine coolants or using
an incorrect coolant may harm the engine
or cooling system components and may
not be covered by the vehicle Warranty.
Note: If prediluted coolant is not available,
use the approved concentrated coolant
diluting it to 50/50 with distilled water. See
Capacities and Specifications (page 343).
Using water that has not been deionised
may contribute to deposit formation,
corrosion and plugging of the small cooling
system passageways.
Note: Coolants marketed for all makes and
models may not be approved to our
specifications and may cause damage to
the cooling system. Resulting component
damage may not be covered by the vehicle
Warranty.
If the coolant level is at or below the
minimum mark, add prediluted coolant
immediately.
To top up the coolant level do the
following:
1. Unscrew the cap slowly. Any pressure escapes as you unscrew the cap.
2. Add prediluted coolant approved to the correct specification. See
Capacities and Specifications (page
343
).
3. Add enough prediluted coolant to reach the correct level.
4. Replace the coolant reservoir cap, turn
it clockwise until you feel a strong
resistance. 5. Check the coolant level in the coolant
reservoir the next few times you drive
your vehicle. If necessary, add enough
prediluted engine coolant to bring the
coolant level to the correct level.
If you have to add more than
1.1 qt (1 L) of
engine coolant per month, have your
vehicle checked as soon as possible.
Operating an engine with a low level of
coolant can result in engine overheating
and possible engine damage.
Note: During normal vehicle operation, the
coolant may change color from orange to
pink or light red. As long as the coolant is
clear and uncontaminated, this color change
does not indicate the coolant has degraded
nor does it require the coolant to be drained,
the system to be flushed, or the coolant to
be replaced.
In case of emergency, you can add a large
amount of water without engine coolant
in order to reach a vehicle service location.
In this instance, qualified personnel:
1. Must drain the cooling system.
2. Chemically clean the coolant system.
3. Refill with engine coolant as soon as possible.
Water alone, without engine coolant, can
cause engine damage from corrosion,
overheating or freezing.
Do not use the following as a coolant
substitute:
• Alcohol.
• Methanol.
• Brine.
• Any coolant mixed with alcohol or
methanol antifreeze.
Alcohol and other liquids can cause engine
damage from overheating or freezing.
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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 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 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 a short period 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.
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CAPACITIES AND SPECIFICATIONS - 2.3L ECOBOOST™
Capacities
WARNING: The air conditioning refrigerant system contains refrigerant under high
pressure. Only qualified personnel should service the air conditioning refrigerant system.
Opening the air conditioning refrigerant system can cause personal injury. Capacity
Item
5.7 qt (5.4 L)
Engine oil (with oil filter)
11.6 qt (11 L)
Engine coolant
Between MIN/MAX on brake fluid reservoir
Brake fluid
2.11 pt (1.0 L)
Rear axle fluid (four-wheel drive)
9.0 qt (8.5 L)1
Automatic transmission fluid
23.7 fl oz (700 ml)
Power Transfer Unit (PTU) fluid (four-
wheel drive)
Fill as required
Windshield washer fluid
18.6 gal (70.4 L)
Fuel tank
2.81 lb (1.276 kg)
A/C refrigerant
7.3 fl oz (215 ml)
A/C refrigerant compressor oil
1 Approximate dry fill capacity. Actual amount may vary during fluid changes.
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CAPACITIES AND SPECIFICATIONS - 3.5L DURATEC
Capacities
WARNING: The air conditioning refrigerant system contains refrigerant under high
pressure. Only qualified personnel should service the air conditioning refrigerant system.
Opening the air conditioning refrigerant system can cause personal injury. Capacity
Item
6.0 qt (5.7 L)
Engine oil (with oil filter)
13.1 qt (12.4 L)
Engine coolant (without trailer tow)
13.4 qt (12.7 L)
Engine coolant (with trailer tow)
Between MIN/MAX on brake fluid reservoir
Brake fluid
2.11 pt (1.0 L)
Rear axle fluid (four-wheel drive)
10.9 qt (10.3 L)1
Automatic transmission fluid (6F50)
11.6 qt (11 L)1
Automatic transmission fluid (6F55)
17.9 fl oz (0.53 L)
Power Transfer Unit (PTU) fluid (four-
wheel drive)
Fill as required
Windshield washer fluid
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Capacities
WARNING: The air conditioning refrigerant system contains refrigerant under high
pressure. Only qualified personnel should service the air conditioning refrigerant system.
Opening the air conditioning refrigerant system can cause personal injury. Capacity
Item
6.0 qt (5.7 L)
Engine oil (with oil filter)
13.1 qt (12.4 L)
Engine coolant
Between MIN/MAX on brake fluid reservoir
Brake fluid
2.11 pt (1.0 L)
Rear axle fluid (four-wheel drive)
10.9 qt (10.3 L)1
Automatic transmission fluid (6F50)
11.6 qt (11 L)1
Automatic transmission fluid (6F55)
17.9 fl oz (0.53 L)
Power Transfer Unit (PTU) fluid (four-
wheel drive)
Fill as required
Windshield washer fluid
18.6 gal (70.4 L)
Fuel tank
2.8 lb (1.28 kg)
A/C refrigerant
7.3 fl oz (215 ml)
A/C refrigerant compressor oil
1 Approximate dry fill capacity. Actual amount may vary during fluid changes.
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