light FORD TAURUS 2003 4.G Repair Manual

that does not meet Ford material and design specifications, start-up
engine noises or knock may be experienced.
It is recommended you use the appropriate Motorcraft oil filter (or
another brand meeting Ford specifications) for your engine application.
BATTERY
Your vehicle is equipped with a
Motorcraft maintenance-free battery
which normally does not require
additional water during its life of
service.
However, for severe usage or in high temperature climates, check the
battery electrolyte level. Refer to the scheduled maintenance guide for
the service interval schedules.
Keep the electrolyte level in each cell up to the“level indicator”.
Do not overfill the battery cells.
If the electrolyte level in the battery is low, you can add plain tap water
to the battery, as long as you do not use hard water (water with a high
mineral or alkali content). If possible, however, try to only fill the battery
cells with distilled water. If the battery needs water often, have the
charging system checked.
If your battery has a cover/shield, make sure it is reinstalled
after the battery has been cleaned or replaced.
For longer, trouble-free operation, keep the top of the battery clean and
dry. Also, make certain the battery cables are always tightly fastened to
the battery terminals.
If you see any corrosion on the battery or terminals, remove the cables
from the terminals and clean with a wire brush. You can neutralize the
acid with a solution of baking soda and water.
Batteries normally produce explosive gases which can cause
personal injury. Therefore, do not allow flames, sparks or lighted
substances to come near the battery. When working near the battery,
always shield your face and protect your eyes. Always provide proper
ventilation.
Maintenance and Specifications
173

For vehicles with overflow coolant systems with a non-pressurized cap
on the coolant recovery system, add coolant to the coolant recovery
reservoir when the engine is cool. Add the proper mixture of coolant and
water to the“cold full”level. For all other vehicles, which have a coolant
degas system with a pressurized cap, or if it is necessary to remove the
coolant pressure relief cap on the radiator of a vehicle with an overflow
system, follow these steps to add engine coolant.
To reduce the risk of personal injury, make sure the engine is
cool before unscrewing the coolant pressure relief cap. The
cooling system is under pressure; steam and hot liquid can come out
forcefully when the cap is loosened slightly.
1. Before you begin, turn the engine off and let it cool.
2. When the engine is cool, wrap a thick cloth around the coolant
pressure relief cap on the coolant reservoir (an opaque plastic bottle).
Slowly turn cap counterclockwise (left) until pressure begins to release.
3. Step back while the pressure releases.
4. When you are sure that all the pressure has been released, use the
cloth to turn it counterclockwise and remove the cap.
5. Fill the coolant reservoir slowly with the proper coolant mixture (see
above), to within the“cold fill range”or the“cold full”level on the
reservoir. If you removed the radiator cap in an overflow system, fill the
radiator until the coolant is visible and radiator is almost full.
6. Replace the cap. Turn until tightly installed. (Cap must be tightly
installed to prevent coolant loss.)
After any coolant has been added, check the coolant concentration, refer
toChecking Engine Coolantsection. If the concentration is not 50/50
(protection to–34°F/–36°C), drain some coolant and adjust the
concentration. It may take several drains and additions to obtain a 50/50
coolant concentration.
Whenever coolant has been added, the coolant level in the coolant
reservoir should be checked the next few times you drive the vehicle. If
necessary, add enough 50/50 concentration of engine coolant and
distilled water to bring the liquid level to the proper level.
If you have to add more than 1.0 liter (1.0 quart) of engine coolant per
month, have your dealer check the engine cooling system. Your cooling
system may have a leak. Operating an engine with a low level of coolant
can result in engine overheating and possible engine damage.
Maintenance and Specifications
178

Choosing the right fuel
Use only UNLEADED FUEL. The use of leaded fuel is prohibited by law
and could damage your vehicle.
If your vehicle is a flexible fuel vehicle (FFV), use only UNLEADED
FUEL and (E85) ETHANOL. The use of leaded fuel is prohibited by law
and could damage your vehicle.
Do not use fuel containing methanol. It can damage critical fuel system
components.
Your vehicle was not designed to use fuel or fuel additives with metallic
compounds, including manganese-based compounds containing MMT.
Repairs to correct the effects of using a fuel for which your vehicle was
not designed may not be covered by your warranty.
Octane recommendations
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 dealer or a qualified service technician to prevent
any engine damage.
Unleaded Gasoline engines
Your vehicle is designed to use“Regular”unleaded gasoline with an
(R+M)/2 octane rating of 87. We do not recommend the use of gasolines
labeled as“Regular”that are sold with octane ratings of 86 or lower in
high altitude areas.
FFV engine (if equipped)
Your vehicle is designed to use (E85) Fuel Ethanol,“Regular”unleaded
gasoline or any percentage of the two fuels combined.
U.S. government regulations require fuel ethanol dispensing
pumps to have a small, square, orange and black label with the
common abbreviation or the appropriate percentage for that
region. Use of other fuels such as Fuel Methanol may cause
powertrain damage, a loss of vehicle performance, and your
warranty may be invalidated.
87(R+M)/2 METHOD
Maintenance and Specifications
184

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.
•Using fuel blended with alcohol may lower 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.
•Close windows for high speed driving.
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.
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.
Maintenance and Specifications
189

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 unleaded fuel (or E85, if equipped with the 3.0L FFV V6
engine).
•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
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.
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 identifies engine displacement and gives some tune up
specifications.
Maintenance and Specifications
190

Please consult your“Warranty Guide”for complete emission warranty
information.
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
indicator is on, refer to the
description in theWarning lights and chimessection of the
Instrument Clusterchapter. Your vehicle may not pass the I/M test with
the
indicator 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”
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.
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).
Maintenance and Specifications
191

A
Accessory delay ..........................49
Air bag supplemental restraint
system ..............................94–95, 98
and child safety seats ..............96
description ..........................95, 98
disposal ....................................100
driver air bag ................95, 97, 99
indicator light ...........................98
operation .......................95, 97, 99
passenger air bag .........95, 97, 99
side air bag ................................98
Air cleaner filter .......................199
Air conditioning ..........................26
Antifreeze (see Engine
coolant) .....................................175
Anti-lock brake system
(see Brakes) ......................116–117
Anti-theft system ........................73
arming the system ....................74
disarming a triggered system ..74
Audio system
(see Radio) ......................15–16, 19
Automatic transaxle
fluid, adding ............................193
fluid, checking ........................193
fluid, refill capacities ..............200
fluid, specification ..................203
Automatic transmission
driving an automatic
overdrive .................................121
Auxiliary power point .................48
Axle
lubricant specifications ..........201
B
Battery .......................................173acid, treating emergencies .....173
jumping a disabled battery ....142
maintenance-free ....................173
replacement, specifications ...199
servicing ..................................173
BeltMinder ...................................89
Brakes ........................................116
anti-lock ...........................116–117
anti-lock brake system (ABS)
warning light ...........................117
fluid, checking and adding ....193
fluid, refill capacities ..............200
fluid, specifications .........201, 203
lubricant specifications ..201, 203
parking ....................................117
shift interlock ..........................119
Bulbs ............................................35
C
Capacities for refilling fluids ....200
Cargo area shade ........................60
Cargo cover .................................59
Cargo net .....................................59
CD changer .................................21
CD-single premium .........15–16, 19
Cell phone use ............................56
Cellular telephone (see your
Cellular Phone Guide) ................56
Certification Label ....................205
Changing a tire .........................138
Child safety restraints ..............101
child safety belts ....................101
Child safety seats ......................103
attaching with tether straps ..108
in front seat ............................104
in rear seat ......................104, 107
Index
210

refill capacities ........................200
specifications ..................201, 203
Exhaust fumes ..........................116
F
Flexible Fuel Vehicle (FFV) ....180
Floor mats ...................................58
Fluid capacities .........................200
Fuel ............................................180
calculating fuel economy .......186
cap ...........................................183
capacity ...................................200
choosing the right fuel ...........184
comparisons with EPA fuel
economy estimates .................189
detergent in fuel .....................186
filling your vehicle with
fuel ...........................180, 183, 187
filter, specifications ........186, 199
fuel pump shut-off switch .....130
improving fuel economy ........186
octane rating ...................184, 203
quality ......................................185
running out of fuel .................186
safety information relating
to automotive fuels ................180
Fuel - flex fuel vehicle
(FFV) .................................180, 184
Fuses ..................................132–133
G
Gas cap (see Fuel cap) ............183
Gas mileage (see Fuel
economy) ...................................186
Gauges .........................................13
GAWR (Gross Axle Weight
Rating) .......................................123definition .................................123
driving with a heavy load ......123
location ....................................123
GVWR (Gross Vehicle Weight
Rating) .......................................123
calculating ...............................123
definition .................................123
driving with a heavy load ......123
location ....................................123
H
Headlamps ...................................30
aiming ........................................32
autolamp system .......................30
bulb specifications ....................35
daytime running lights .............30
flash to pass ..............................31
high beam .................................31
replacing bulbs .........................37
turning on and off ....................30
Heating
heating and air conditioning
system .................................24, 26
Hood ..........................................166
I
Ignition ...............................112, 203
Infant seats
(see Safety seats) .....................103
Inspection/maintenance (I/M)
testing ........................................191
Instrument panel
cleaning ...................................162
cluster ........................................10
lighting up panel and
interior .......................................31
J
Jack ............................................138
Index
212

positioning ...............................138
storage .....................................138
Jump-starting your vehicle ......142
K
Keyless entry system .................68
Keys
positions of the ignition .........112
L
Lamps
autolamp system .......................30
bulb replacement
specifications chart ..................35
cargo lamps ...............................31
daytime running light ...............30
headlamps .................................30
headlamps, flash to pass ..........31
instrument panel, dimming .....31
interior lamps .....................34–36
replacing
bulbs ..................35, 37, 39–42, 44
Lane change indicator
(see Turn signal) ........................33
Liftgate ........................................58
Lights, warning and indicator ....10
anti-lock brakes (ABS) ..........117
speed control ............................55
Load limits .................................123
GAWR ......................................123
GVWR ......................................123
trailer towing ..........................123
Locks
childproof ..................................62
doors ..........................................62
Lubricant specifications ...201, 203
Lumbar support, seats ...............76M
Mirrors ...................................48–49
automatic dimming rearview
mirror ........................................49
heated ........................................52
side view mirrors (power) .......51
Moon roof ....................................55
Motorcraft parts ................186, 199
O
Octane rating ............................184
Oil (see Engine oil) ..................170
Overdrive ...................................120
P
Parking brake ............................117
Parts (see Motorcraft parts) ....199
Pedals (see Power adjustable
foot pedals) .................................52
Power adjustable foot pedals .....52
Power distribution box
(see Fuses) ...............................136
Power door locks ........................62
Power point .................................48
Power steering ..........................118
fluid, checking and adding ....191
fluid, refill capacity ................200
fluid, specifications .........201, 203
Power Windows ...........................48
R
Radio ................................15–16, 19
Rear window defroster ...............28
Relays ........................................138
Index
213

Remote entry system
illuminated entry ......................67
locking/unlocking doors ...........62
opening the trunk .....................65
Roadside assistance ..................129
Roof rack .....................................61
S
Safety belts (see Safety
restraints) ..................79, 81–84, 86
Safety defects, reporting ..........158
Safety restraints ..............79, 81–87
belt minder ...............................89
cleaning the safety belts ..........93
extension assembly ..................93
for adults .............................82–84
for children .....................100–101
lap belt ......................................86
warning light and chime ....88–89
Safety seats for children ..........103
Seat belts (see Safety
restraints) ....................................79
Seats ............................................75
child safety seats ....................103
cleaning ...................................162
Servicing your vehicle ..............165
Spare tire (see Changing
the Tire) ....................................138
Spark plugs,
specifications .....................199, 203
Specification chart,
lubricants ...........................201, 203
Speed control ..............................52
Starting a flex fuel vehicle .......115Starting your vehicle ........112–114
jump starting ..........................142
Steering wheel
tilting .........................................47
T
Tires ...........................138, 195–196
changing ..........................138–139
checking the pressure ............196
replacing ..................................197
rotating ....................................196
snow tires and chains ............198
tire grades ...............................196
treadwear ................................195
Towing .......................................125
recreational towing .................128
trailer towing ..........................125
wrecker ....................................148
Traction control ........................118
Transaxle
fluid, refill capacities ..............200
lubricant specifications ..........203
Transmission .............................119
fluid, checking and adding
(automatic) .............................193
lubricant specifications ..........201
Trunk ...............................59, 61, 63
remote release ....................58, 65
Turn signal ..................................33
V
Vehicle dimensions ...................203
Vehicle Identification Number
(VIN) ..........................................206
Vehicle loading ..........................123
Ventilating your vehicle ...........116
Index
214