2021 FORD F-150 cooling

HILL DESCENT CONTROL – TROUBLESHOOTING
HILL DESCENT CONTROL – INFORMATION MESSAGES
Action
Message
Your vehicle speed requirement for off-road modeentry has not been met.
For Hill Descent Reduce Speed
XX MPH/km/h or Less
You need to select a transmission gear for hill descentmode.
For Hill Descent Select Gear
Hill descent control mode is deactivated and you mustresume control.
Hill Descent Driver Resume
Control
A hill descent system fault is present.
Hill Descent Control Fault
The hill descent system is cooling due to overuse.
Hill Descent Control Off System
Cooling
The hill descent system cannot activate while CruiseControl is actively controlling speed.
Hill Descent Control not avail-
able with Cruise Control Active
331
F-150 (TFD) Canada/United States of America, enUSA, Edition date: 202104, Second-Printing Hill Descent Control (If Equipped)

When towing a trailer:
•
Obey country specific regulations for
towing a trailer.
• Do not drive faster than 70 mph
(113 km/h) during the first 500 mi
(800 km).
• Do not make full-throttle starts.
• Check your hitch, electrical connections
and trailer wheel lug nuts thoroughly
after you have traveled 50 mi (80 km).
• When stopped in congested or heavy
traffic during hot weather, place the
transmission in park (P) to aid engine
and transmission cooling and to help
A/C performance.
• Turn off the speed control with heavy
loads or in hilly terrain. The speed
control may turn off when you are
towing on long, steep slopes.
• Shift to a lower gear when driving down
a long or steep hill. Do not continuously
apply the brakes, as they may overheat
and become less effective.
• If your transmission has Grade Assist
or Tow/Haul, use this feature when
towing. This provides engine braking
and helps eliminate excessive
transmission shifting for optimum fuel
economy and transmission cooling.
• Your vehicle has AdvanceTrac with roll
stability control. When towing a trailer,
additional loads could cause the
AdvanceTrac system to engage during
cornering maneuvers. Reduce cornering
speeds to make sure that you can
maintain control of the vehicle and
trailer if the AdvanceTrac system
engages. •
Allow more distance for stopping with
a trailer attached. Anticipate stops and
gradually brake.
• Avoid parking on a slope. However, if
you must park on a slope, turn the
steering wheel to point your vehicle
tires away from traffic flow, set the
parking brake, place the transmission
in park (P) and place wheel chocks in
front and back of the trailer wheels.
Note: Chocks are not included with your
vehicle.
LAUNCHING OR RETRIEVING
A BOAT OR PERSONAL
WATERCRAFT
When backing down a ramp during boat
launching or retrieval:
• Do not allow the static water level to
rise above the bottom edge of the rear
bumper.
• Do not allow waves to break higher
than
6 in (15 cm) above the bottom
edge of the rear bumper.
Exceeding
6 in (15 cm) could allow water
to enter vehicle components, causing
internal damage to the components and
affecting driveability, emissions and
reliability.
Note: Replace the rear axle lubricant
anytime the rear axle has been submerged
in water.
Note: Disconnect the trailer wiring
connector before backing the trailer into the
water.
Note: Reconnect the trailer wiring
connector after removing the trailer from
the water.
430
F-150 (TFD) Canada/United States of America, enUSA, Edition date: 202104, Second-Printing Towing a Trailer

Driving In Mud
Be cautious of sudden changes in vehicle
speed or direction when you are driving in
mud.
After driving through mud, clean your
vehicle. Excess mud stuck on the wheels
and tires and rotating components can
cause an imbalance and result in damage.
Note:
The vehicle brakes are less effective
when wet or muddy.
Driving Over Rocks and Gravel
Never attempt to straddle a rock that is
large enough to strike your axles or
undercarriage.
Leave a generous gap between your
vehicle and other vehicles to minimize the
risk of damage. Avoid dust clouds as they
reduce visibility.
Climbing A Hill WARNING: Extreme care should
be used when steering the vehicle in
reverse down a slope so as not to cause
the vehicle to swerve out of control.
Do not drive over the crest of a hill without
seeing what conditions are on the other
side. Do not drive in reverse over a hill
without the aid of an observer.
Note: Avoid turning on steep slopes or hills.
A danger lies in losing traction, slipping
sideways and possible vehicle roll over.
Note: Too much acceleration can cause
the tires to slip, spin or lose traction,
resulting in loss of vehicle control. Driving Through Water WARNING:
Do not attempt to
cross a deep, fast flowing body of water.
Failure to follow this instruction could
result in the loss of control of your
vehicle, personal injury or death.
The key to a safe crossing is the water
depth, current and bottom of the water's
condition. On soft bottoms, the vehicle
sinks in, effectively increasing the water
level on the vehicle. Make sure to consider
this when determining the depth of water.
Determine the depth and speed of the
current before attempting a water crossing.
Be aware that obstacles and debris could
be beneath the water ’s surface.
Note: Cross flowing water at an angle
heading slightly upstream.
Note: Tread lightly and avoid damage to
the environment.
Water can cause permanent damage that
may not be covered by your vehicle
warranty. See
Driving Through Water
Limitations (page 474).
Note: Failure to follow the recommended
speeds can result in vehicle damage.
Muddy waters can reduce the cooling
system effectiveness by depositing debris
into the radiator.
High currents even in shallow water can
wash the dirt out from around your tires or
push your vehicle across slippery rocks or
surfaces.
Do not cross any body of water that is fast
flowing and rising.
472
F-150 (TFD) Canada/United States of America, enUSA, Edition date: 202104, Second-Printing Driving Hints

Protected Component
Rating
Item
Passenger power seat.
30 A
31
Auxiliary power point.
20 A
32
Auxiliary power point.
20 A
33
USB smart charger.
Auxiliary power point.
20 A
34
Tailgate module.
30 A
37
Climate controlled seatmodule.
40 A
38
Power running boards.
Power sliding back window.
25 A
41
Trailer brake controlmodule.
30 A
42
Cooling fan (gas, hybrid,Raptor, Tremor).
50 A
47
Rear heated seats (Raptor,Tremor)
20 A
48
Cooling fan (gas, hybrid,Raptor, Tremor).
50 A
49
Heated backlight (gas,hybrid).
40 A
50
Trailer tow park lamps.
30 A
55
Trailer tow stop and turn
lamps (4-pin connector).
20 A
56
Trailer tow backup lamps.
10 A
58
Upfitter 1 relay (Raptor,Tremor).
15 A
60
Upfitter 2 relay (Raptor,Tremor).
15 A
61
Upfitter 3 relay (Raptor,Tremor).
10 A
62
Upfitter 4 relay (Raptor,Tremor).
10 A
63
496
F-150 (TFD) Canada/United States of America, enUSA, Edition date: 202104, Second-Printing Fuses

Adding Coolant
WARNING: Keep your hands and
clothing clear of the cooling fan. 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 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 add coolant
further than the MAX mark. 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:
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.
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. 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 574). 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 could
void the vehicle Warranty.
Note: If prediluted coolant is not available,
use the approved concentrated coolant
diluting it to 50/50 with deionized or
distilled water. See
Capacities and
Specifications (page 574). Using water that
has not been deionized may contribute to
deposit formation, corrosion and plugging
of the small cooling system passageways.
To top up the coolant level do the
following:
1. Unscrew the cap slowly. Any pressure escapes as you unscrew the cap.
2. Add enough prediluted coolant to reach the correct level.
Note: We do not recommend the use of
recycled coolant.
3. Replace the coolant reservoir cap. Turn
the cap clockwise until it contacts the
hard stop.
4. Check the coolant level in the coolant reservoir the next few times you drive
your vehicle. If necessary, repeat step
2.
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.
In case of emergency, you can add a large
amount of water without engine coolant
in order to reach a vehicle service location.
Service your vehicle as soon as possible.
512
F-150 (TFD) Canada/United States of America, enUSA, Edition date: 202104, Second-Printing Maintenance

Water alone, without engine coolant, can
cause engine damage from corrosion,
overheating or freezing.
Do not use the following as a coolant
substitute, as they can cause engine
damage from overheating or freezing:
•
Alcohol.
• Methanol.
• Brine.
• Any coolant mixed with alcohol or
methanol antifreeze.
Do not add extra inhibitors or additives to
the coolant. These can be harmful and
compromise the corrosion protection of
the coolant.
Severe Climates
If you drive in extremely cold climates, you
may need to increase the coolant
concentration above 50%.
Note: A coolant concentration of 60%
provides improved freeze point protection.
Coolant concentrations above 60%
decrease the overheat protection
characteristics of the coolant and could
cause engine damage.
If you drive in extremely hot climates, you
may need to decrease the coolant
concentration to 40%.
Note: A coolant concentration of 40%
provides improved overheat protection.
Coolant concentrations below 40%
decrease the overheat and corrosion
protection characteristics of the coolant and
could cause engine damage.
Coolant Change WARNING: Do not dispose of
coolant in the household refuse or the
public sewage system. Use an authorized
waste disposal facility. Change the coolant at specific mileage
intervals. Refer to the scheduled
maintenance information. See
Normal
Scheduled Maintenance (page 667).
Note: Dispose of used coolant in the
appropriate manner.
Follow your community's regulations and
standards for recycling and disposing of
automotive fluids.
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.
513
F-150 (TFD) Canada/United States of America, enUSA, Edition date: 202104, Second-Printing Maintenance

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 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 could 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.
514
F-150 (TFD) Canada/United States of America, enUSA, Edition date: 202104, Second-Printing Maintenance

COOLING SYSTEM CAPACITY
AND SPECIFICATION - 2.7L
ECOBOOST™
Use coolant that meets the defined
specification.
If you do not use coolant that meets the
defined specification, it could result in:
•
Component damage that your vehicle
warranty does not cover.
• Reduced vehicle performance.
Capacities Quantity
Variant
15.1 qt (14.3 L)
All.
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)
598
F-150 (TFD) Canada/United States of America, enUSA, Edition date: 202104, Second-Printing Capacities and SpecificationsE240523