2003 Mercury Mountaineer service schedule

It is important to note the box in the lower left corner of the window
sticker. These numbers represent the Range of L/100 km (MPG)
expected on the vehicle under optimum conditions. 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 your scheduled maintenance guide performed
according to the specified schedule.
The scheduled maintenance items listed in the scheduled maintenance
guide are essential to the life and performance of your vehicle and to its
emissions system.
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.
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“Check Engine”light, 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.
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
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condition. To ready the on-board diagnostics system for I/M testing, a
minimum of 30 minutes of city and highway driving is necessary as
described below:
•First, at least 10 minutes of driving on an expressway or highway.
•Next, at least 20 minutes driving in stop-and-go, city-type traffic with
at least four 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.
CHECKING AND ADDING POWER STEERING FLUID
Check the power steering fluid. Refer to the scheduled maintenance
guide for the service interval schedules. If adding fluid is necessary, use
only MERCONAT F.
•4.0L SOHC V6 engine
•4.6L V8 engine
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.
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236

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.
BRAKE FLUID RESERVOIR
The fluid level will drop slowly as
the brakes wear, and will rise when
the brake components are replaced.
Fluid levels below the“MAX”line
that do not trigger the brake system
warning lamp 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 your brake system could be compromised, seek
service from your dealer immediately.
TRANSMISSION FLUID
Checking automatic transmission fluid
The automatic transmission does not have a transmission fluid dipstick.
Refer to your scheduled maintenance guide 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 a qualified technician.
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.
MAX
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237

Fluid Ford Part
NameApplication Capacity
Engine coolant
3Motorcraft
Premium Gold
Engine Coolant
(yellow-colored)4.0L SOHC V6
enginewithout
auxiliary climate
control15.4L (16.3
quarts)
4.0L SOHC V6
enginewith
auxiliary climate
control17.2L (18.2
quarts)
4.6L V8 engine
without
auxiliary climate
control17.6L (18.6
quarts)
4.6L V8 engine
withauxiliary
climate control19.0L (20.1
quarts)
Front axle
lubricantMotorcraft SAE
80W-90
Premium Rear
Axle Lubricant4x4/AWD
vehicles1.3L (1.4
quarts)
Rear axle
lubricant
4Motorcraft SAE
75W-140 High
Performance
Synthetic Rear
Axle LubricantConventional
Axle1.7L (3.5 pints)
Limited Slip
Axle
51.5L (4.2 pints)
Windshield
washer fluidMotorcraft
Premium
Windshield
Washer
ConcentrateAll vehicles 4.0L (4.2
quarts)
1Ensure the correct automatic transmission fluid is used. MERCONand
MERCONV are not interchangeable. DO NOT mix MERCONand
MERCONV. Refer to your scheduled maintenance guide to determine
the correct service interval.
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245

ItemFord Part
Name or
equivalentFord Part
NumberFord
Specification
Transfer case
(AWD)Motorcraft
MERCON
Multi-Purpose
AT FXT-2-QDX MERCON
Transfer case
Front Output
Slip ShaftPremium
Long-Life GreaseXG-1-C or
XG-1-KESA-M1C75-B
Windshield
washer fluidMotorcraft
Premium
Windshield
Washer
ConcentrateZC—32–A WSB-M8B16–A2
1Ensure the correct automatic transmission fluid is used. MERCONand
MERCONV are not interchangeable. DO NOT mix MERCONand
MERCONV. Refer to your scheduled maintenance guide to determine
the correct service interval.
2Limited-slip differentials must add 118 ml (4 oz) of Additive Friction
Modifier XL—3 or equivalent meeting Ford specification EST-M2C118–A
to the rear axle whenever the axle has been serviced.
ENGINE DATA
Engine 4.0L SOHC V6 engine 4.6L V8 engine
Cubic inches 245 281
Required fuel 87 octane 87 octane
Firing order 1-4-2-5-3-6 1-3-7-2-6-5-4-8
Spark plug gap 1.3-1.4 mm (0.052-0.056
inch)1.3-1.4 mm
(0.052-0.056 inch)
Ignition system EDIS EDIS
Compression ratio 9.7:1 9.4:1
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