2015 FORD F750 overheating

Foldaway Exterior Mirrors
Push the mirror toward the door window glass. Make sure that you fully
engage the mirror in its support when returning it to its original position.
Power-Folding Mirrors (If Equipped)
Note:Using the mirrors 10 or more times within one minute, or
repeated folding and unfolding of the mirrors while holding the control
down during full travel, may disable the system to protect motors from
overheating. Wait approximately three minutes with your vehicle running,
and up to 10 minutes with your vehicle off, for the system to reset and
for function to return to normal.
Pull the control back to fold the
mirrors.
Loose Mirror
You can manually fold a power-folding mirror by pulling it toward the
door window glass. This may cause the mirror to appear loose and it
needs to be re-synchronized. Pull and hold the control to fold the
mirrors in until movement stops. You hear a click that indicates
re-synchronization. If you do not hear a click, use the control to fold the
mirrors all the way out, then in again. Once you hear the click, the
mirrors operate normally until you fold them manually again.
Heated Exterior Mirror (If Equipped)
The heated exterior mirrors switch on with the heated mirror switch. See
Heated mirrorsin theClimate Controlchapter.
Signal Indicator Mirrors (If Equipped)
The outer portion of the appropriate mirror housing blinks when you
activate the turn signal.
Clearance Lamps (If Equipped)
The lower, outer portion of the mirror housings illuminate when you
switch on the headlamps or parking lamps.
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•At temperatures of –4°F (–20°C) or below, it is recommended that
you use a crankcase-mounted coolant heater to improve cold engine
starting.
•If operating in arctic temperatures of –20°F (–29°C) or lower, consult
your truck dealer for information about special cold weather
equipment and precautions.
Hot Weather
•Use a permanent-type engine coolant to protect the engine against
damage from overheating.
•Fill the fuel tank at the end of daily operation to prevent
condensation in the fuel system.
•Keep external surfaces of the engine, radiator, charge air cooler, air
conditioning condenser and accessories clean to avoid dirt build-up.
•You may experience above normal coolant temperatures while driving
in a transmission gear ratio that lugs the engine. To correct this
problem, increase engine speed by downshifting into the next lower
gear.
STEERING
Your vehicle is equipped with power steering. Power steering uses energy
from the engine to decrease the driver’s effort in steering your vehicle.
To help prevent damage to the power steering pump:
•Never hold the steering wheel to the extreme right or the extreme
left for more than a few seconds when the engine is running.
•Do not operate your vehicle with the power steering pump fluid level
below the ADD mark on the MAX COLD side of the power steering
reservoir dipstick.
•Some noise is normal during operation. If the noise is excessive,
check for low power steering pump fluid level before seeking service
by an authorized dealer.
•Low power steering pump fluid levels may cause heavy or uneven
steering efforts. Check the power steering pump fluid level before
seeking service from an authorized dealer.
•Do not fill the power steering pump reservoir above the FULL mark
on the MAX HOT side of the power steering reservoir dipstick, as this
may result in leaks from the reservoir.
If the power steering system breaks down (or if the engine is turned
off), you can steer your vehicle manually, but it takes more effort.
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Note:Do not use stop leak pellets or cooling system sealants or
additives as they can cause damage to the engine cooling and heating
systems. Your vehicle’s warranty does not cover this damage.
Note:During normal vehicle operation, the engine coolant may change
color from orange to pink or light red. As long as the engine coolant is
clear and uncontaminated, this color change does not indicate the engine
coolant has degraded nor does it require draining the engine coolant,
flushing the system, or replacing the engine coolant.
•DO NOT MIX different colors or types of coolant in your vehicle.
Make sure the correct coolant is used. Mixing of engine coolants may
harm your engine’s cooling system. The use of an improper coolant
may harm engine and cooling system components and may void the
warranty. Use prediluted engine coolant meeting the Ford
specification. See theCapacities and Specificationschapter for
more information.
•In case of emergency, you may add a large amount of water without
engine coolant in order to reach a vehicle service location. In this
instance, drain the cooling system, chemically clean it with Motorcraft
Premium Cooling System Flush, and refill it with engine coolant as
soon as possible. Water alone (without engine coolant) can cause
engine damage from corrosion, overheating or freezing.
•Do not use alcohol, methanol, brine or any engine coolants mixed
with alcohol or methanol antifreeze (coolant). Alcohol and other
liquids can cause engine damage from overheating or freezing.
•Do not add extra inhibitors or additives to the coolant. These can be
harmful and compromise the corrosion protection of the engine
coolant.
Unscrew the cap slowly. Any pressure escapes as you unscrew the cap.
Add prediluted engine coolant meeting the Ford specification. See
Capacities and Specificationsfor more information.
Whenever you add coolant, 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 proper
level.
Recycled Engine Coolant
Ford Motor Company does not recommend the use of recycled engine
coolant since a Ford-approved recycling process is not yet available.
Dispose of used engine coolant in an appropriate manner. Follow your
community’s regulations and standards for recycling and disposing of
automotive fluids.
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Severe Climates
If you drive in extremely cold climates:
•It may be necessary to have an authorized dealer increase the coolant
concentration above 50%.
•A coolant concentration of 60% provides improved freeze point
protection. Engine coolant concentrations above 60% decrease the
overheat protection characteristics of the engine coolant and may
cause engine damage.
If you drive in extremely hot climates:
•It may be necessary to have an authorized dealer decrease the
coolant concentration to 40%.
•A coolant concentration of 40% provides improved overheat
protection. Engine coolant concentrations below 40% decrease the
corrosion and freeze protection characteristics of the engine coolant
and may cause engine damage.
Vehicles driven year-round in non-extreme climates should use
prediluted engine coolant for optimum cooling system and engine
protection.
What You Should Know About Fail-Safe Cooling (If Equipped)
(Gasoline Engine Only)
WARNING:If fail-safe cooling activates, pull off the road as soon
as safely possible and turn the engine off. The engine may
automatically shut off while driving without further indication.
If the engine coolant supply is very low, this feature allows you to drive
your vehicle temporarily before incremental component damage occurs.
The fail-safe distance depends on ambient temperatures, vehicle load and
terrain.
How Fail-Safe Cooling Works
If the engine begins to overheat:
•The engine coolant temperature gauge moves to the red (hot) area.
•The information display indicates the engine is overheating.
•The service engine soon indicator illuminates.
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.
214Maintenance
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Low Fluid Level
Do not drive your vehicle if there is
no indication of fluid on the dipstick
and the ambient temperature is
above 50°F (10°C).
Correct Fluid Level
Check the fluid at normal operating
temperature, 196°F-216°F
(91°C-102°C), on a level surface.
The fluid reaches normal operating
temperature after approximately 20 miles (30 kilometers) of driving.
High Fluid Level
Fluid levels above the safe range
may result in transmission failure.
An overfill condition of transmission
fluid may cause shift or engagement
concerns and possible damage.
Overheating conditions can cause
high fluid levels.
Adjusting Automatic Transmission Fluid Levels
Note:Use of a non-approved automatic transmission fluid may cause
internal transmission component damage.
Before adding any fluid, make sure the correct type is used. The dipstick
handle normally indicates which type of fluid to use. You can also find
the fluid specification in theCapacities and Specificationschapter.
If necessary, add fluid in 0.5 pint (250 milliliters) increments through the
filler tube until the level is correct.
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Additives and Chemicals
This owner’s manual and the Ford Workshop Manual list the
recommended additives and chemicals for your vehicle. We do not
recommend using chemicals or additives not approved by us as part of
your vehicle’s normal maintenance. Please consult your warranty
information.
Oils, Fluids and Flushing
In many cases, fluid discoloration is a normal operating characteristic
and, by itself, does not necessarily indicate a concern or that the fluid
needs to be changed. However, a qualified expert, such as the
factory-trained technicians at your dealership, should inspect discolored
fluids that also show signs of overheating or foreign material
contamination immediately.
Make sure to change your vehicle’s oils and fluids at the specified
intervals or in conjunction with a repair. Flushing is a viable way to
change fluid for many vehicle sub-systems during scheduled
maintenance. It is critical that systems are flushed only with new fluid
that is the same as that required to fill and operate the system or using a
Ford-approved flushing chemical.
Owner Checks and Services
You should perform certain basic maintenance checks and inspections
monthly or at six-month intervals.
Daily Owner Checks
EngineAir filter restriction gauge.
Engine oil level.
Engine coolant level.
Brake SystemAir brake reservoir automatic drain valve
operation.
Drain the air brake reservoir (manual valve).
TransmissionVisually check for fluid leakage.
Steering SystemPower steering fluid level.
System for evidence of fluid leaks.
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