Mercury Mountaineer (2010 year). Manual — part 23

What you should know about fail-safe cooling
(4.6L V8 engine only)

If the engine coolant supply is depleted, this feature allows the vehicle to
be driven temporarily before incremental component damage is incurred.
The “fail-safe” distance depends on ambient temperatures, vehicle load
and terrain.

Fail-safe cooling and engine oil overheat mode (4.6L V8 only)

If the engine coolant and/or engine oil overheat, the vehicle’s fail-safe
modes will reduce engine power to limit engine damage, even with a
total loss of coolant. The vehicle’s range and/or speed will be reduced,
depending on vehicle load, terrain, and outside temperatures.

The instrument cluster provides warnings for each mode.
• Fail-Safe Cooling Mode: The

(Service engine

soon),

(Engine oil pressure), and

(Engine coolant

temperature) indicators will be on.

Along with these warning indicators, the engine coolant temperature
gauge will read in the Hot (H) area.

If the engine coolant reaches even hotter temperatures, fail-safe
cooling mode limits engine power more and disables air conditioning.
The engine will switch to alternating cylinder operation to help cool
the engine. The engine will run rough in this mode.

If continued operation increases the engine coolant temperature to a
critical range, the engine will shut down. Steering and braking effort
will increase. Once engine coolant temperature cools, the engine can
be restarted.

• Engine Oil Overheat Mode: The

(Engine coolant temperature)

indicator will be on. The instrument cluster has no separate oil
temperature indicator.

Along with the

(Engine coolant temperature) indicator, the engine

coolant temperature gauge will read in the Hot (H) area.

Oil overheat can be triggered in severe driving conditions, such as
towing heavy loads over mountainous terrain in extreme hot
temperatures. As oil temperature increases, engine and vehicle speed
will be limited. The transmission will also shift differently.

When the engine oil has cooled, the vehicle will perform normally.

Maintenance and Specifications

353

2010 Mountaineer (mnt)
Owners Guide (own2002), 1st Printing
USA (fus)

When fail-safe cooling mode is activated

You have limited engine power when in the fail-safe mode, so drive the
vehicle with caution. Remember that the engine is capable of completely
shutting down automatically to prevent engine damage, therefore:

1. Pull off the road as soon as safely possible and turn off the engine.

2. Arrange for the vehicle to be taken to an authorized dealer.

3. If this is not possible, wait approximately 15 minutes for the engine to
cool.

4. Check the coolant level and replenish if low. Look for coolant leakage
in the engine compartment and under the vehicle.

WARNING: Never remove the coolant reservoir cap while the
engine is running or hot.

5. Restart the engine and take your vehicle to an authorized dealer.

Driving the vehicle without repairing the engine problem
increases the chance of engine damage. Take your vehicle to an
authorized dealer as soon as possible.

FUEL FILTER

For fuel filter replacement, see your authorized dealer. Refer to
scheduled maintenance information for the appropriate intervals for
changing the fuel filter.

Replace the fuel filter with an authorized Motorcraft part. The
customer warranty may be void for any damage to the fuel system
if an authorized Motorcraft fuel filter is not used.

WHAT YOU SHOULD KNOW ABOUT AUTOMOTIVE FUELS

Important safety precautions

WARNING: Do not overfill the fuel tank. The pressure in an
overfilled tank may cause leakage and lead to fuel spray and fire.

WARNING: The fuel system may be under pressure. If you hear
a hissing sound near the fuel filler door (Easy Fuel™ “no cap”

fuel system), do not refuel until the sound stops. Otherwise, fuel may
spray out, which could cause serious personal injury.

Maintenance and Specifications

354

2010 Mountaineer (mnt)
Owners Guide (own2002), 1st Printing
USA (fus)

WARNING: Automotive fuels can cause serious injury or death
if misused or mishandled.

WARNING: Gasoline may contain benzene, which is a
cancer-causing agent.

Observe the following guidelines when handling automotive fuel:
• Extinguish all smoking materials

and any open flames before
refueling your vehicle.

• Always turn off the vehicle before

refueling.

• Automotive fuels can be harmful

or fatal if swallowed. Fuel such as gasoline is highly toxic and if
swallowed can cause death or permanent injury. If fuel is swallowed,
call a physician immediately, even if no symptoms are immediately
apparent. The toxic effects of fuel may not be visible for hours.

• Avoid inhaling fuel vapors. Inhaling too much fuel vapor of any kind

can lead to eye and respiratory tract irritation. In severe cases,
excessive or prolonged breathing of fuel vapor can cause serious
illness and permanent injury.

• Avoid getting fuel liquid in your eyes. If fuel is splashed in the eyes,

remove contact lenses (if worn), flush with water for 15 minutes and
seek medical attention. Failure to seek proper medical attention could
lead to permanent injury.

• Fuels can also be harmful if absorbed through the skin. If fuel is

splashed on the skin and/or clothing, promptly remove contaminated
clothing and wash skin thoroughly with soap and water. Repeated or
prolonged skin contact with fuel liquid or vapor causes skin irritation.

• Be particularly careful if you are taking “Antabuse” or other forms of

disulfiram for the treatment of alcoholism. Breathing gasoline vapors,
or skin contact could cause an adverse reaction. In sensitive
individuals, serious personal injury or sickness may result. If fuel is
splashed on the skin, promptly wash skin thoroughly with soap and
water. Consult a physician immediately if you experience an adverse
reaction.

Maintenance and Specifications

355

2010 Mountaineer (mnt)
Owners Guide (own2002), 1st Printing
USA (fus)

WARNING: When refueling always shut the engine off and
never allow sparks or open flames near the filler neck. Never

smoke while refueling. Fuel vapor is extremely hazardous under certain
conditions. Care should be taken to avoid inhaling excess fumes.

WARNING: The flow of fuel through a fuel pump nozzle can
produce static electricity, which can cause a fire if fuel is

pumped into an ungrounded fuel container.

Refueling

WARNING: Fuel vapor burns violently and a fuel fire can cause
severe injuries. To help avoid injuries to you and others:

• Read and follow all the instructions on the pump island;
• Turn off your engine when you are refueling;
• Do not smoke if you are near fuel or refueling your vehicle;
• Keep sparks, flames and smoking materials away from fuel;
• Stay outside your vehicle and do not leave the fuel pump unattended

when refueling your vehicle — this is against the law in some places;

• Keep children away from the fuel pump; never let children pump

fuel.

Use the following guidelines to avoid electrostatic charge build-up when
filling an ungrounded fuel container:
• Place approved fuel container on the ground.
• DO NOT fill a fuel container while it is in the vehicle (including the

cargo area).

• Keep the fuel pump nozzle in contact with the fuel container while

filling.

• DO NOT use a device that would hold the fuel pump handle in the fill

position.

Easy Fuel™ “no cap” fuel system

Your fuel tank is equipped with an Easy Fuel™ “no cap” fuel filler
system. This allows you to simply open the fuel filler door and insert the
fuel filler nozzle into the fuel system. The Easy Fuel™ system is
self-sealing and protected against dust, dirt, water and snow/ice.

Maintenance and Specifications

356

2010 Mountaineer (mnt)
Owners Guide (own2002), 1st Printing
USA (fus)

When fueling your vehicle:

1. Turn the engine off.

2. Open the fuel filler door.

3. Slowly insert the fuel filler nozzle fully into the fuel system. Pump fuel
as normal.

4. After you are done pumping fuel, slowly remove the fuel filler
nozzle—allow about five seconds after pumping fuel before removing the
fuel filler nozzle. This allows residual fuel to drain back into the fuel tank
and not spill onto the vehicle.

Note: A fuel spillage concern may occur if overfilling the fuel tank. Do
not overfill the tank to the point that the fuel is able to bypass the fuel
filler nozzle. The overfilled fuel may run down the drain located within
the fuel filler housing and to the ground.

If the Check Fuel Fill Inlet lamp or Check Fuel Fill Inlet message comes
on, the fuel fill inlet may not have properly closed. The inlet may have
stuck open or debris may be preventing the inlet from fully closing. At
the next opportunity, safely pull off the road, turn off the engine, open
the fuel filler door and remove any visible debris from the fuel fill
opening. Insert either the fuel fill nozzle or the fuel fill funnel (see
Refilling with a portable fuel container for funnel location) provided
with the vehicle several times to dislodge any debris and/or allow the
inlet to close properly. If this action corrects the problem, the Check
Fuel Fill Inlet lamp or Check Fuel Fill Inlet message may not reset
immediately. It may take several driving cycles for the Check Fuel Fill
Inlet lamp or Check Fuel Fill Inlet message to turn off. A driving cycle
consists of an engine start-up (after four or more hours with the engine
off) followed by city/highway driving. Continuing to drive with the Check
Fuel Fill Inlet lamp or Check Fuel Fill Inlet message on may cause the
Service Engine Soon lamp to turn on as well.

WARNING: The fuel system may be under pressure. If you hear
a hissing sound near the fuel filler door (Easy Fuel™ “no cap”

fuel system), do not refuel until the sound stops. Otherwise, fuel may
spray out, which could cause serious personal injury.

Choosing the right fuel

Use only UNLEADED fuel or UNLEADED fuel blended with a maximum
of 10% ethanol. Do not use fuel ethanol (E85), diesel, methanol, leaded
fuel or any other fuel. The use of leaded fuel is prohibited by law and
could damage your vehicle.

Maintenance and Specifications

357

2010 Mountaineer (mnt)
Owners Guide (own2002), 1st Printing
USA (fus)

Your vehicle was not designed to use fuel or fuel additives with metallic
compounds, including manganese-based additives.

Note: Use of any fuel other than those recommended may cause
powertrain damage, a loss of vehicle performance, and repairs may not
be covered under warranty.

Octane recommendations

Your vehicle is designed to use
“Regular” unleaded gasoline with a
pump (R+M)/2 octane rating of 87.
Some stations offer fuels posted as
“Regular” with an octane rating
below 87, particularly in high altitude areas. Fuels with octane levels
below 87 are not recommended.

Do not be concerned if your engine sometimes knocks lightly. However, if
it knocks heavily under most driving conditions while you are using fuel
with the recommended octane rating, see your authorized dealer to
prevent any engine damage.

Fuel quality

If you are experiencing starting, rough idle or hesitation driveability
problems, try a different brand of unleaded gasoline. If the problems
persist, see your authorized dealer.

Do not add aftermarket fuel additive products to your fuel tank. It
should not be necessary to add any aftermarket products to your fuel
tank if you continue to use high quality fuel of the recommended octane
rating. These products have not been approved for your engine and
could cause damage to the fuel system. Repairs to correct the effects of
using an aftermarket product in your fuel may not be covered by your
warranty.

Many of the world’s automakers approved the World-Wide Fuel Charter
that recommends gasoline specifications to provide improved
performance and emission control system protection for your vehicle.
Gasolines that meet the World-Wide Fuel Charter should be used when
available. Ask your fuel supplier about gasolines that meet the
World-Wide Fuel Charter.

Cleaner air

Ford endorses the use of reformulated “cleaner-burning” gasolines to
improve air quality, per the recommendations in the Choosing the right
fuel section.

87

(R+M)/2 METHOD

Maintenance and Specifications

358

2010 Mountaineer (mnt)
Owners Guide (own2002), 1st Printing
USA (fus)

Running out of fuel

Avoid running out of fuel because this situation may have an adverse
effect on powertrain components.

If you have run out of fuel:
• You may need to cycle 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. On restarting, cranking time will take a few seconds longer
than normal.

• Normally, adding 1 gallon (3.8L) of fuel is enough to restart the

engine. If the vehicle is out of fuel and on a steep grade, more than
1 gallon (3.8L) may be required.

• The service engine soon

indicator may come on. For more

information on the service engine soon indicator, refer to Warning
lights and chimes in the Instrument Cluster chapter.

Refilling with a portable fuel container

With the Easy Fuel™ “no cap” fuel system, use the following directions
when filling from a portable fuel container:

WARNING: Do not insert the nozzle of portable fuel containers
or aftermarket funnels into the Easy Fuel™ system. This could

damage the fuel system and its seal, and may cause fuel to run onto
the ground instead of filling the tank, which could result in serious
personal injury.

WARNING: Do not try to pry open or push open the Easy
Fuel™ system with foreign objects. This could damage the fuel

system and its seal and cause injury to you or others.

When filling the vehicle’s fuel tank from a portable fuel container, use the
included funnel.

Maintenance and Specifications

359

2010 Mountaineer (mnt)
Owners Guide (own2002), 1st Printing
USA (fus)

1. Locate the white plastic funnel. It
is attached to the underside of the
spare tire cover or is included with
the tire changing tools.

2. Slowly insert the funnel into the Easy Fuel™ system.

3. Fill the vehicle with fuel from the portable fuel container.

4. When done, clean the funnel or properly dispose of it. Extra funnels
can be purchased from your authorized dealer if you choose to dispose
of the funnel. Do not use aftermarket funnels; they will not work with
the Easy Fuel™ system and can damage it. The included funnel has
been specially designed to work safely with your vehicle.

ESSENTIALS OF GOOD FUEL ECONOMY

Measuring techniques

Your best source of information about actual fuel economy is you, the
driver. You must gather information as accurately and consistently as
possible. Fuel expense, frequency of fill-ups or fuel gauge readings are
NOT accurate as a measure of fuel economy. We do not recommend
taking fuel economy measurements during the first 1,000 miles
(1,600 km) of driving (engine break-in period). You will get a more
accurate measurement after 2,000 miles–3,000 miles (3,000 km–5,000
km).

Filling the tank

The advertised fuel capacity of the fuel tank on your vehicle is equal to
the rated refill capacity of the fuel tank as listed in the Maintenance
product specifications and capacities section of this chapter.

The advertised capacity is the amount of the indicated capacity and the
empty reserve combined. Indicated capacity is the difference in the
amount of fuel in a full tank and a tank when the fuel gauge indicates
empty. Empty reserve is the small amount of fuel remaining in the fuel
tank after the fuel gauge indicates empty.

Maintenance and Specifications

360

2010 Mountaineer (mnt)
Owners Guide (own2002), 1st Printing
USA (fus)

The amount of usable fuel in the empty reserve varies and should
not be relied upon to increase driving range. When refueling your
vehicle after the fuel gauge indicates empty, you might not be
able to refuel the full amount of the advertised capacity of the
fuel tank due to the empty reserve still present in the tank.

For consistent results when filling the fuel tank:
• Turn the engine/ignition switch to the off position prior to refueling,

an error in the reading will result if the engine is left running.

• Use the same filling rate setting (low — medium — high) each time

the tank is filled.

• Allow no more than two automatic click-offs when filling.
• Always use fuel with the recommended octane rating.
• Use a known quality gasoline, preferably a national brand.
• Use the same side of the same pump and have the vehicle facing the

same direction each time you fill up.

• Have the vehicle loading and distribution the same every time.
Your results will be most accurate if your filling method is consistent.

Calculating fuel economy

1. Fill the fuel tank completely and record the initial odometer reading
(in miles or kilometers).

2. Each time you fill the tank, record the amount of fuel added (in
gallons or liters).

3. After at least three to five tank fill-ups, fill the fuel tank and record
the current odometer reading.

4. Subtract your initial odometer reading from the current odometer
reading.

5. Follow one of the simple calculations in order to determine fuel
economy:

Calculation 1: Divide total miles traveled by total gallons used.

Calculation 2: Multiply liters used by 100, then divide by total
kilometers traveled.

Keep a record for at least one month and record the type of driving (city
or highway). This will provide an accurate estimate of the vehicle’s fuel
economy under current driving conditions. Additionally, keeping records
during summer and winter will show how temperature impacts fuel
economy. In general, lower temperatures give lower fuel economy.

Maintenance and Specifications

361

2010 Mountaineer (mnt)
Owners Guide (own2002), 1st Printing
USA (fus)

Driving style — good driving and fuel economy habits

Give consideration to the lists that follow and you may be able to change
a number of variables and improve your fuel economy.

Habits
• Smooth, moderate operation can yield up to 10% savings in fuel.
• Steady speeds without stopping will usually give the best fuel

economy.

• Idling for long periods of time (greater than one minute) may waste

fuel.

• Anticipate stopping; slowing down may eliminate the need to stop.
• Sudden or hard accelerations may reduce fuel economy.
• Slow down gradually.
• Driving at reasonable speeds (traveling at 55 mph [88 km/h] uses 15%

less fuel than traveling at 65 mph [105 km/h]).

• Revving the engine before turning it off may reduce fuel economy.
• Using the air conditioner or defroster may reduce fuel economy.
• You may want to turn off the speed control in hilly terrain if

unnecessary shifting between the top gears occurs. Unnecessary
shifting of this type could result in reduced fuel economy.

• Warming up a vehicle on cold mornings is not required and may

reduce fuel economy.

• Resting your foot on the brake pedal while driving may reduce fuel

economy.

• Combine errands and minimize stop-and-go driving.
Maintenance
• Keep tires properly inflated and use only recommended size.
• Operating a vehicle with the wheels out of alignment will reduce fuel

economy.

• Use recommended engine oil. Refer to Maintenance product

specifications and capacities in this chapter.

• Perform all regularly scheduled maintenance items. Follow the

recommended maintenance schedule and owner maintenance checks
found in scheduled maintenance information.

Conditions
• Heavily loading a vehicle or towing a trailer may reduce fuel economy

at any speed.

Maintenance and Specifications

362

2010 Mountaineer (mnt)
Owners Guide (own2002), 1st Printing
USA (fus)

• Carrying unnecessary weight may reduce fuel economy (approximately

1 mpg [0.4 km/L] is lost for every 400 lb [180 kg] of weight carried).

• Adding certain accessories to your vehicle (for example; bug

deflectors, rollbars/light bars, running boards, ski/luggage racks) may
reduce fuel economy.

• Fuel economy may decrease with lower temperatures during the first

8–10 miles (12–16 km) of driving.

• Driving on flat terrain offers improved fuel economy as compared to

driving on hilly terrain.

• Transmissions give their best fuel economy when operated in the top

cruise gear and with steady pressure on the gas pedal.

• Four-wheel-drive operation (if equipped) is less fuel efficient than

two-wheel-drive operation.

• Close windows for high speed driving.

EPA fuel economy estimates

Every new vehicle should have a sticker on the window called the
Monroney Label which contains EPA fuel economy estimates. Contact
your authorized dealer if the Monroney Label is not supplied with your
vehicle. The EPA fuel economy estimates should be your guide for the
fuel economy comparisons with other vehicles. Your fuel economy may
vary depending upon the method of operation and conditions.

EMISSION CONTROL SYSTEM

Your vehicle is equipped with various emission control components and a
catalytic converter which will enable your vehicle to comply with
applicable exhaust emission standards. To make sure that the catalytic
converter and other emission control components continue to work
properly:
• Use only the specified fuel listed.
• Avoid running out of fuel.
• Do not turn off the ignition while your vehicle is moving, especially at

high speeds.

• Have the items listed in scheduled maintenance information

performed according to the specified schedule.

The scheduled maintenance items listed in scheduled maintenance
information are essential to the life and performance of your vehicle
and to its emissions system.

Maintenance and Specifications

363

2010 Mountaineer (mnt)
Owners Guide (own2002), 1st Printing
USA (fus)

If other than Ford, Motorcraft or Ford-authorized parts are used 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.

WARNING: Do not park, idle, or drive your vehicle in dry grass
or other dry ground cover. The emission system heats up the

engine compartment and exhaust system, which can start a fire.

Illumination of the service engine soon

indicator, charging system

warning light or the temperature warning light, fluid leaks, strange odors,
smoke or loss of engine power could indicate that the emission control
system is not working properly.

An improperly operating or damaged exhaust system may allow exhaust
to enter the vehicle. Have a damaged or improperly operating exhaust
system inspected and repaired immediately.

WARNING: Exhaust leaks may result in entry of harmful and
potentially lethal fumes into the passenger compartment.

Do not make any unauthorized changes to your vehicle or engine. By
law, vehicle owners and anyone who manufactures, repairs, services,
sells, leases, trades vehicles, or supervises a fleet of vehicles are not
permitted to intentionally remove an emission control device or prevent
it from working. Information about your vehicle’s emission system is on
the Vehicle Emission Control Information Decal located on or near the
engine. This decal also lists engine displacement.

Please consult your Warranty Guide/Customer Information Guide for
complete emission warranty information.

On board diagnostics (OBD-II)

Your vehicle is equipped with a computer that monitors the engine’s
emission control system. This system is commonly known as the On
Board Diagnostics System (OBD-II). The OBD-II system protects the
environment by ensuring that your vehicle continues to meet
government emission standards. The OBD-II system also assists your
authorized dealer in properly servicing your vehicle. When the service
engine soon

indicator illuminates, the OBD-II system has detected

a malfunction. Temporary malfunctions may cause the service engine
soon

indicator to illuminate. Examples are:

1. The vehicle has run out of fuel—the engine may misfire or run poorly.

Maintenance and Specifications

364

2010 Mountaineer (mnt)
Owners Guide (own2002), 1st Printing
USA (fus)

2. Poor fuel quality or water in the fuel—the engine may misfire or run
poorly.

3. The fuel fill inlet may not have been properly closed. See Easy Fuel™
“no cap” fuel system in this chapter.

4. Driving through deep water—the electrical system may be wet.

These temporary malfunctions can be corrected by filling the fuel tank
with good quality fuel, properly closing the fuel fill inlet or letting the
electrical system dry out. After three driving cycles without these or any
other temporary malfunctions present, the service engine soon
indicator should stay off the next time the engine is started. A driving
cycle consists of a cold engine startup followed by mixed city/highway
driving. No additional vehicle service is required.

If the service engine soon

indicator remains on, have your vehicle

serviced at the first available opportunity. Although some malfunctions
detected by the OBD-II may not have symptoms that are apparent,
continued driving with the service engine soon

indicator on can

result in increased emissions, lower fuel economy, reduced engine and
transmission smoothness, and lead to more costly repairs.

Readiness for Inspection/Maintenance (I/M) testing

Some state/provincial and local governments may have
Inspection/Maintenance (I/M) programs to inspect the emission control
equipment on your vehicle. Failure to pass this inspection could prevent
you from getting a vehicle registration. 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 considered not ready for I/M testing.

If the service engine soon

indicator is on or the bulb does not

work, the vehicle may need to be serviced. Refer to the On board
diagnostics (OBD-II) description in this chapter.

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 the vehicle is ready for I/M testing.

Maintenance and Specifications

365

2010 Mountaineer (mnt)
Owners Guide (own2002), 1st Printing
USA (fus)

The OBD-II system is designed to check the emission control system
during normal driving. A complete check may take several days. If the
vehicle is not ready for I/M testing, the following driving cycle consisting
of mixed city and highway driving may be performed:

15 minutes of steady driving on an expressway/highway followed by
20 minutes of stop-and-go driving with at least four 30-second idle
periods.

Allow the vehicle to sit for at least eight hours without starting the
engine. Then, start the engine and complete the above driving cycle. The
engine must warm up to its normal operating temperature. Once started,
do not turn off the engine until the above driving cycle is complete. If
the vehicle is still not ready for I/M testing, the above driving cycle will
have to be repeated.

POWER STEERING FLUID

Check the power steering fluid. Refer to scheduled maintenance
information.

1. Start the engine and let it run
until it reaches normal operating
temperature (the engine coolant
temperature gauge indicator will be
near the center of the normal area
between H and C).

2. While the engine idles, turn the
steering wheel left and right several
times.

3. Turn the engine off.

4. Check the fluid level in the reservoir.

5. The fluid level should be between the MIN and MAX lines. Do not add
fluid if the level is in this range.

6. If the fluid is low, add fluid in small amounts, continuously checking
the level until it reaches the correct operating range. Be sure to put the
cap back on the reservoir. Refer to Maintenance product specifications
and capacities in this chapter for the proper fluid type.

Maintenance and Specifications

366

2010 Mountaineer (mnt)
Owners Guide (own2002), 1st Printing
USA (fus)

BRAKE FLUID

The fluid level will drop slowly as
the brakes wear, and will rise when
the brake components are replaced.
Fluid levels between the MIN and
MAX lines are within the normal
operating range; there is no need to
add fluid. If the fluid levels are
outside of the normal operating
range, the performance of the
system could be compromised; seek
service from your authorized dealer
immediately.

TRANSMISSION FLUID

Checking automatic transmission fluid

The automatic transmission does not have an underhood transmission
fluid dipstick.

Refer to your scheduled maintenance information for scheduled
intervals for fluid checks and changes. Your transmission does not
consume fluid. However, the fluid level should be checked if the
transmission is not working properly, (i.e., if the transmission slips or
shifts slowly) or if you notice some sign of fluid leakage.

Transmission fluid should be checked and, if required, fluid
should be added by 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.

Maintenance and Specifications

367

2010 Mountaineer (mnt)
Owners Guide (own2002), 1st Printing
USA (fus)

TRANSFER CASE FLUID (IF EQUIPPED)

WARNING: Turn off the
power running boards, if

equipped, before working under
the vehicle, jacking or placing any
object under the vehicle. Never
place your hand between the
extended running board and the
vehicle. A moving running board
may cause injury.

1. Clean the filler plug.

2. Remove the filler plug and inspect the fluid level.

3. Add only enough fluid through
the filler opening so that the fluid
level is at the bottom of the
opening.

Use only fluid that meets Ford specifications. Refer to the Maintenance
product specifications and capacities section in this chapter.

DRIVELINE UNIVERSAL JOINT, DRIVESHAFT AND SLIP YOKE

WARNING: Turn off the power running boards, if equipped,
before working under the vehicle, jacking or placing any object

under the vehicle. Never place your hand between the extended
running board and the vehicle. A moving running board may cause
injury.

If the original universal joints are replaced with universal joints equipped
with grease fittings, periodic lubrication will be necessary.

Maintenance and Specifications

368

2010 Mountaineer (mnt)
Owners Guide (own2002), 1st Printing
USA (fus)