light FORD MUSTANG 2003 4.G Repair Manual

The fuel system may be under pressure. If
the fuel filler cap is venting vapor or if you
hear a hissing sound, wait until it stops before
completely removing the fuel filler cap. Otherwise,
fuel may spray out and injure you or others.
If you do not use the proper fuel filler cap,
excessive pressure or vacuum in the fuel
tank may damage the fuel system or cause the fuel
cap to disengage in a collision, which may result in
possible personal injury.
Choosing the right fuel
Use only UNLEADED FUEL. 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
Your vehicle is
designed to use
“Regular”unleaded
gasoline with pump
(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.
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.
87(R+M)/2 METHOD
Maintenance and Specifications
217

•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 third
and fourth gear 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 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.
Maintenance and Specifications
222

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“Service Engine Soon”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 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.
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 cluster
chapter. Your vehicle may not pass the I/M test with
the“Check Engine/Service Engine Soon”light on.
Maintenance and Specifications
224

Dash trim
Electrochromic mirror with compass
Electrochromic mirror with compass and
temperature display
Engine block heaters
Remote keyless entry system
Remote start system
Travel equipment
Auto headlamps with daytime running lights (DRL)
Daytime running lights (DRL)
First aid kit
Fog lights
Highway safety kit
Removable luggage rack
Removable luggage rack adapters (Bike, ski,
snowboard)
Speed control
Protection and appearance equipment
All-weather vinyl floor mats
Car cover
Cargo liners, interior
Carpet floor mats
Door edge guards
Door sill scuff plates, stainless
Flat splash guards
Front end covers (full and mini)
Gearshift knob
Leather steering wheel
Molded splash guards
Pedal covers
Seat belt extenders
Accessories
246

A
ABS (see Brakes) ... 140
Air bag supplemental
restraint
system .............. 114–115
and child safety
seats ....................... 116
description ............ 115
disposal .................. 119
driver air bag ........ 117
indicator
light .................. 11, 119
operation ............... 117
passenger
air bag .................... 117
Air cleaner filter ..... 237
Air conditioning
manual heating
and air conditioning
system ..................... 63
Antifreeze
(see Engine
coolant) ................... 206
Anti-lock brake system
(see Brakes) .... 140–141
Anti-theft system
warning light ........... 11
Audio system
(see Radio) .......... 19, 43
Automatic
transmission ............ 144
driving an automatic
overdrive ............... 146
fluid, adding .......... 228
fluid, checking ...... 228
fluid, refill
capacities ............... 238
fluid,
specification .......... 242Auxiliary power
point ........................... 78
Axle
lubricant
specifications... 240, 242
refill capacities ...... 238
traction lok ............ 144
B
Battery ..................... 203
acid, treating
emergencies .......... 203
charging system
warning light ........... 11
jumping a disabled
battery ................... 170
maintenance-free .. 203
replacement,
specifications ........ 237
servicing ................ 203
voltage gauge .......... 16
BeltMinder ............... 109
Brakes .............. 138, 141
anti-lock ......... 140–141
anti-lock brake
system (ABS)
warning light ... 13, 141
brake warning
light .......................... 14
fluid, checking
and adding ............ 226
fluid, refill
capacities ............... 238
fluid,
specifications... 240, 242
lubricant
specifications... 240, 242
parking .................. 139
shift interlock ........ 144
Break-in period ........... 5
Bulbs .......................... 71
Index
248

D
Daytime running lamps
(see Lamps) .............. 67
Defrost
rear window ............ 66
Dipstick
automatic
transmission
fluid ........................ 228
engine oil ............... 199
Doors
lubricant
specifications ........ 240
Driving under
special conditions
through water ....... 153
E
Emergencies, roadside
jump-starting ........ 170
Emission control
system ...................... 223
Engine ...................... 242
check engine/service
engine soon light .... 11
cleaning ................. 188
coolant ................... 206
idle speed control.... 203
lubrication
specifications... 240, 242
refill capacities ...... 238
service
points ............. 197–198
starting after
a collision .............. 159
Engine block
heater ....................... 137
Engine oil ................ 199checking and
adding .................... 199
dipstick .................. 199
filter,
specifications... 202, 237
recommendations.... 202
refill capacities ...... 238
specifications... 240, 242
Exhaust fumes ........ 137
F
Floor mats ................. 85
Fluid capacities ....... 238
Foglamps ................... 67
Fuel .......................... 214
calculating fuel
economy ................ 219
cap ................... 12, 216
capacity ................. 238
choosing the
right fuel ................ 217
comparisons with
EPA fuel economy
estimates ............... 223
detergent in fuel ... 218
filling your
vehicle with
fuel ......... 214, 216, 219
filter,
specifications... 219, 237
fuel pump shut-off
switch .................... 159
gauge ....................... 16
improving fuel
economy ................ 219
low fuel warning
light .......................... 13
octane
rating ............. 217, 242
quality .................... 218
Index
250

running out
of
fuel ......................... 218
safety information
relating to
automotive fuels ... 214
Fuses ........................ 160
G
Gas cap
(see Fuel cap) ... 12, 216
Gas mileage
(see
Fuel economy) ........ 219
Gauges ....................... 15
battery voltage
gauge ....................... 16
engine coolant
temperature
gauge ....................... 15
engine oil pressure
gauge ....................... 16
fuel gauge ................ 16
odometer ................. 17
speedometer ........... 17
tachometer .............. 17
trip odometer .......... 18
GAWR (Gross Axle
Weight Rating) ........ 154
definition ............... 154
driving with a
heavy load ............. 154
location .................. 154
GVWR (Gross Vehicle
Weight Rating) ........ 154
calculating ............. 154
definition ............... 154
driving with a
heavy load ............. 154
location .................. 154H
Hazard flashers ....... 158
Head restraints ......... 99
Headlamps ................. 67
aiming ................ 68–69
bulb specifications .. 71
daytime running
lights ........................ 67
flash to pass ............ 68
high beam ......... 10, 68
replacing bulbs ....... 72
turning on and off .. 67
warning chime ........ 15
Heating
heating and air
conditioning
system ..................... 63
Hood ........................ 196
I
Ignition ............. 133, 242
removing the key .. 153
Infant seats (see
Safety seats) ........... 123
Inspection/maintenance
(I/M) testing ............ 224
Instrument panel
cleaning ................. 190
cluster ...................... 10
lighting up panel
and interior ............. 68
J
Jack .......................... 165
positioning ............. 165
storage ................... 165
Index
251

Jump-starting your
vehicle ...................... 170
K
Keys ..................... 95–97
key in ignition
chime ....................... 14
positions of the
ignition .................. 133
removing from
the ignition ............ 153
L
Lamps
bulb replacement
specifications
chart ........................ 71
cargo lamps ............. 68
daytime running
light .......................... 67
fog lamps ................. 67
headlamps ......... 67, 72
headlamps, flash
to pass ..................... 68
instrument panel,
dimming ................... 68
interior lamps ... 70, 72
replacing
bulbs .................. 71–75
Lane change indicator
(see Turn signal) ...... 70
Lights, warning and
indicator .................... 10
air bag ...................... 11
anti-lock brakes
(ABS) .............. 13, 141
anti-theft ................. 11
brake ........................ 14
charging system ...... 11
fuel cap light ........... 12high beam ............... 10
low fuel .................... 13
overdrive off ............ 13
safety belt ............... 10
service engine
soon ......................... 11
traction control
active ....................... 13
turn signal
indicator .................. 10
Limited slip axle
(see Traction Loc) .. 144
Load limits ............... 154
GAWR .................... 154
GVWR .................... 154
trailer towing ........ 154
Locks
doors ........................ 89
Lubricant
specifications ... 240, 242
Lug nuts,
anti-theft .................. 169
Lumbar support,
seats ......................... 100
M
Manual
transmission ............ 150
fluid capacities ...... 238
lubricant
specifications ........ 242
reverse ................... 152
Mirrors
side view mirrors
(power) ................... 80
Motorcraft
parts ................. 219, 237
O
Octane rating .......... 217
Index
252

Odometer ................... 17
Oil (see
Engine oil) ............... 199
Overdrive ........... 84, 146
P
Panic alarm feature,
remote entry
system ........................ 92
Parking brake .......... 139
Parts (see Motorcraft
parts) ....................... 237
Power distribution
box (see Fuses) ...... 163
Power door locks ...... 89
Power mirrors ........... 80
Power point ............... 78
Power steering ........ 142
fluid, checking
and adding ............ 225
fluid, refill
capacity ................. 238
fluid,
specifications... 240, 242
Power Windows ......... 78
R
Radio .................... 19, 43
Radio reception ... 61–62
Rear window
defroster .................... 66
Relays ...................... 160
Remote entry
system .................. 91–92
illuminated entry .... 94locking/unlocking
doors .................. 89, 92
opening the trunk ... 93
panic alarm ............. 92
replacement/additional
transmitters ............. 94
replacing the
batteries .................. 93
Roadside
assistance ................ 157
S
Safety belts (see
Safety restraints) ..... 14,
102, 104–107
Safety defects,
reporting .................. 186
Safety
restraints... 102, 104–107
belt minder ........... 109
cleaning the
safety belts ............ 113
extension
assembly ................ 113
for adults ....... 104–107
for children ... 119–120
warning light
and chime ............... 10,
14, 108–109
Safety seats
for children .............. 123
Seat belts (see Safety
restraints) ................ 102
Seats .......................... 99
child safety seats .. 123
SecuriLock passive
anti-theft
system .................. 95–97
Index
253

Servicing your
vehicle ...................... 194
Spare tire
(see Changing
the Tire) .................. 165
Spark plugs,
specifications ... 237, 242
Specification chart,
lubricants ......... 240, 242
Speed control ............ 80
Speedometer ............. 17
Starting your
vehicle ...... 133–134, 136
jump starting ........ 170
Steering wheel
controls .............. 77, 80
tilting ....................... 77
T
Tachometer ............... 17
Tires ......... 165, 232–234
changing ........ 165–166
checking the
pressure ................. 234
replacing ................ 235
rotating .................. 234
snow tires and
chains .................... 236
tire grades ............. 233
treadwear .............. 232
Towing ..................... 156
recreational
towing .................... 156
trailer towing ........ 156
wrecker .................. 175
Traction control ...... 142
active light .............. 13Traction-lok rear
axle .......................... 144
Transmission
automatic
operation ............... 144
fluid, checking
and adding
(automatic) ........... 228
fluid, checking
and adding
(manual) ............... 231
fluid, refill
capacities ............... 238
lubricant
specifications... 240, 242
manual operation .. 150
Trip odometer ........... 18
Trunk ......................... 89
remote release .. 85, 93
Turn signal .......... 10, 70
V
Vehicle dimensions . 242
Vehicle Identification
Number (VIN) ......... 244
Vehicle loading ........ 154
Ventilating your
vehicle ...................... 138
W
Warning chimes ... 14–15
Warning lights
(see Lights) ............... 10
Washer fluid ............ 199
Water, Driving
through .................... 153
Index
254