2003 Mercury Mountaineer check engine light

•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 toLubricant specificationsin
this chapter.
•Perform all regularly scheduled maintenance items. Follow the
recommended maintenance schedule and owner maintenance checks
found in your vehicle scheduled maintenance guide.
Conditions
•Heavily loading a vehicle or towing a trailer may reduce fuel economy
at any speed.
•Carrying unnecessary weight may reduce fuel economy (approximately
0.4 km/L [1 mpg] is lost for every 180 kg [400 lb] 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
12–16 km (8–10 miles) 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.
Flex fuel (E-85) cruising range
Because E-85 fuel contains less energy per gallon than gasoline, you will
experience an increase in fuel consumption. You can expect your Miles
Per Gallon (MPG) and your driving range to decrease by about 30%
compared to gasoline operation.
EPA window sticker
Every new vehicle should have the EPA window sticker. Contact your
dealer if the window sticker is not supplied with your vehicle. The EPA
window sticker should be your guide for the fuel economy comparisons
with other vehicles.
Maintenance and Specifications
233

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
Maintenance and Specifications
234

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 identifies engine displacement and gives some tune up
specifications.
Please consult yourWarranty Guidefor 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). This OBD-II system protects the
environment by ensuring that your vehicle continues to meet
government emission standards. The OBD-II system also assists the
service technician in properly servicing your vehicle. When theCheck
Engine/Service Engine Soonlight illuminates, the OBD-II system has
detected a malfunction. Temporary malfunctions may cause yourCheck
Engine/Service Engine Soonlight to illuminate. Examples are:
1. The vehicle has run out of fuel. (The engine may misfire or run
poorly.)
2. Poor fuel quality or water in the fuel.
3. The fuel cap may not have been securely tightened.
These temporary malfunctions can be corrected by filling the fuel tank
with good quality fuel and/or properly tightening the fuel cap. After three
driving cycles without these or any other temporary malfunctions
present, theCheck Engine/Service Engine Soonlight should turn off.
(A driving cycle consists of a cold engine startup followed by mixed
city/highway driving.) No additional vehicle service is required.
If theCheck Engine/Service Engine Soonlight remains on, have your
vehicle serviced at the first available opportunity.
Readiness for Inspection/Maintenance (I/M) testing
In some localities, it may be a legal requirement to pass an I/M test of
the on-board diagnostics system. If your“Check Engine/Service Engine
Soon”light is on, refer to the description in theWarning lights and
chimessection of theInstrument clusterchapter. Your vehicle may not
pass the I/M test with the“Check Engine/Service Engine Soon”light on.
If the vehicle’s powertrain system or its battery has just been serviced,
the on-board diagnostics system is reset to a“not ready for I/M test”
Maintenance and Specifications
235

A
Accessory delay ..........................55
Air bag supplemental restraint
system ................................120, 124
and child safety seats ............122
description ......................120, 124
disposal ....................................128
driver air bag ..................122, 126
indicator light .................124, 127
operation .........................122, 126
passenger air bag ...........122, 126
Air cleaner filter .......................243
Air conditioning ..........................32
All Wheel Drive (AWD),
driving off road .........................155
Ambulance packages ....................7
Antifreeze (see Engine
coolant) .....................................219
Anti-lock brake system
(see Brakes) ..............................146
Anti-theft system ........................94
arming the system ....................94
disarming a triggered system ..95
Audio system
(see Radio) ......................17, 21, 25
Automatic transmission
driving an automatic
overdrive .................................150
fluid, adding ............................237
fluid, checking ........................237
fluid, refill capacities ..............244
fluid, specification ..................248
Auxiliary power point .................53
Axle
lubricant specifications ..246, 248
refill capacities ........................244
B
Battery .......................................217acid, treating emergencies .....217
jumping a disabled battery ....183
maintenance-free ....................217
replacement, specifications ...243
servicing ..................................217
BeltMinder .................................116
Brakes ........................................145
anti-lock ...................................146
anti-lock brake system (ABS)
warning light ...........................146
fluid, checking and adding ....237
fluid, refill capacities ..............244
fluid, specifications .........246, 248
lubricant specifications ..246, 248
parking ....................................146
shift interlock ..........................148
C
Calculating load ........................157
Capacities for refilling fluids ....244
Cargo cover .................................80
Cassette tape player ...................17
CD-single premium ...............21, 25
Cell phone use ............................50
Certification Label ....................250
Changing a tire .........................176
Child safety restraints ..............129
child safety belts ....................129
Child safety seats ......................131
attaching with tether straps ..135
in front seat ............................133
in rear seat ..............................133
Cleaning your vehicle
engine compartment ..............201
instrument panel ....................203
interior .....................................204
interior trim ............................204
Index
Index
256

Engine oil ..................................212
checking and adding ..............212
dipstick ....................................212
filter, specifications ........215, 243
recommendations ...................215
refill capacities ........................244
specifications ..................246, 248
Exhaust fumes ..........................145
F
Fail safe cooling ........................223
Flexible Fuel Vehicle (FFV) ....225
Floor mats ...................................79
Fluid capacities .........................244
Foglamps .....................................37
Four-Wheel Drive vehicles
preparing to drive your
vehicle .....................................148
Fuel ............................................225
calculating fuel
economy ............................70, 230
cap ...........................................229
capacity ...................................244
choosing the right fuel ...........227
comparisons with EPA fuel
economy estimates .................233
detergent in fuel .....................229
filling your vehicle with
fuel ...........................225, 229, 231
filter, specifications ........230, 243
fuel pump shut-off switch .....165
improving fuel economy ........230
octane rating ...........228, 248–249
quality ......................................228
running out of fuel .................229
safety information relating to
automotive fuels .....................225
Fuel - flex fuel vehicle
(FFV) .........................225, 227–228Fuses ..................................166–167
G
Garage door opener ..............52, 62
Gas cap (see Fuel cap) ............229
Gas mileage
(see Fuel economy) .................230
Gauges .........................................14
GAWR (Gross Axle Weight
Rating) .......................................156
calculating ...............................157
definition .................................156
driving with a heavy load ......156
location ....................................156
GVWR (Gross Vehicle Weight
Rating) .......................................156
calculating .......................156–157
definition .................................156
driving with a heavy load ......156
location ....................................156
H
Hazard flashers .........................164
Head restraints ...........................97
Headlamps
aiming ........................................39
bulb specifications ....................41
daytime running lights .............37
flash to pass ..............................38
high beam .................................38
Heating
heating and air conditioning
system .................................31–32
HomeLink universal
transceiver (see Garage door
opener) ..................................62, 65
Hood ..........................................207
Index
258

I
Ignition .......................142, 248–249
Infant seats
(see Safety seats) .....................131
Inspection/maintenance (I/M)
testing ........................................235
Instrument panel
cleaning ...................................203
cluster ........................................10
J
Jack ....................................176, 178
positioning .......................176, 180
storage .............................176–178
Jump-starting your vehicle ......183
K
Keyless entry system .................89
Keys
positions of the ignition .........142
L
Lamps
bulb replacement
specifications chart ..................41
daytime running light ...............37
fog lamps ...................................37
high beams ................................38
instrument panel, dimming .....38
interior lamps ...........................40
Liftgate ..................................79, 85
Lights, warning and indicator ....10
anti-lock brakes (ABS) ..........146
Limited-slip axle .......................155Load limits .................................156
GAWR ......................................156
GVWR ......................................156
trailer towing ..........................156
Loading instructions .................157
Locks
childproof ..................................84
doors ..........................................83
Lubricant specifications ...246, 248
Lumbar support, seats .............101
M
Manual transmission
lubricant specifications ..........248
Message center ...........................68
english/metric button ...............73
system check button ................72
warning messages .....................74
Mirrors .........................................53
automatic dimming rearview
mirror ........................................52
fold away ...................................56
heated ........................................55
side view mirrors (power) .......55
Moon roof ....................................61
Motorcraft parts ................230, 243
O
Octane rating ............................228
Oil (see Engine oil) ..................212
P
Parking brake ............................146
Parts (see Motorcraft parts) ....243
Index
259