Page 8 of 240
These are some of the symbols you may see on your
vehicle.
Vehicle Symbol Glossary
Safety Alert
See Owner’s Guide
Fasten Safety BeltAir Bag-Front
Air Bag-SideChild Seat
Child Seat
Installation WarningChild Seat Lower
Anchor
Child Seat Tether
AnchorBrake System
Anti-Lock Brake
SystemBrake Fluid -
Non-Petroleum
Based
Traction ControlAdvanceTrac
Master Lighting
SwitchHazard Warning
Flasher
Fog Lamps-FrontFuse Compartment
Fuel Pump ResetWindshield
Wash/Wipe
Windshield
Defrost/DemistRear Window
Defrost/Demist
Power Windows
Front/RearPower Window
Lockout
2004 Mustang(mus)
Owners Guide (post-2002-fmt)
USA English(fus)
Introduction
8
Page 35 of 240
HEADLAMP CONTROL
•The first position
turns on the parking,
tail, license plate and
side marker lamps.
•The outer position
turns on the
headlamps.
Foglamp control (if equipped)
The foglamps can be
turned on when the
ignition is in the ON
position and the
headlamp control is in
either of the following
positions:
•Parking lamps
•Low beams
Press the foglamp control to activate the foglamps.
Press the foglamp control again to deactivate the
foglamps.
When the highbeams are activated, the foglamps will
not operate.
Daytime running lamps (DRL) (if equipped)
Turns the headlamps on with a reduced output. To
activate:
•the ignition must be turned on
•the headlamp control is in the OFF or Parking
lamps position
•the high beam headlamps must be turned off
•the parking brake is released
2004 Mustang(mus)
Owners Guide (post-2002-fmt)
USA English(fus)
Lights
35
Page 39 of 240

Using the right bulbs
Replacement bulbs are specified in the chart below.
Headlamp bulbs must be marked with an authorized
“D.O.T.”for North America and an“E”for Europe to
assure lamp performance, light brightness and
pattern and safe visibility. The correct bulbs will not
damage the lamp assembly or void the lamp
assembly warranty and will provide quality bulb burn
time.
Function Trade Number
Tail lamp, brakelamp, turn lamp 3157K
Park lamp, turn lamp, side marker
(front)3157 AK (amber)
Backup lamp 3156K
License plate lamp 168
High-mount brakelamp 906
Headlamps 9007
Luggage compartment lamp 906
Dome lamp 575
Map lamp 575
Visor vanity lamp 74
Glove compartment 194
Rearview mirror map lamps 192
Fog lamp 899
All replacement bulbs are clear in color except where
noted.
To replace all instrument panel lights - see your dealer.
Interior bulbs
Check the operation of all bulbs frequently.
Map lamps
For bulb replacement, see a qualified service
technician or your dealer.
2004 Mustang(mus)
Owners Guide (post-2002-fmt)
USA English(fus)
Lights
39
Page 42 of 240
Replacing foglamp bulbs
1. Make sure the
headlamp switch is in
the OFF position.
2. Rotate the foglamp
bulb socket
counterclockwise and
remove from foglamp.
3. Disconnect the
electrical connector and pull the bulb straight out.
Install the new bulb in reverse order.
Replacing license plate lamp bulbs
1. Make sure the
headlamp switch is in
the OFF position and
then open trunk and
remove bulb socket
from the trunk lid by
turning it
counterclockwise.
2. Pull the bulb straight out of the socket.
Install the new bulb in reverse order.
Replacing tail lamp/backup bulbs
For bulb replacement, see a dealer or qualified
technician.
2004 Mustang(mus)
Owners Guide (post-2002-fmt)
USA English(fus)
Lights
42
Page 226 of 240
Grille inserts
Headlamps, fog lights and Daytime Running Lamps
(DRLS)
Splash guards
Wheels
Interior style
Cell phone holders
Electrochromatic compass/temperature interior
mirrors
Floor mats
Interior trim kits
Leather wrapped steering wheels
Scuff plates
Speed control
Lifestyle
Bike racks
Cargo organization and management
Engine block heaters and blankets
Peace of mind
Airbag anti-theft locks
First aid and safety kits
Full vehicle covers
Locking gas cap
Navigation systems
Remote start
Vehicle security systems
For maximum vehicle performance, keep the
following information in mind when adding
accessories or equipment to your vehicle:
•When adding accessories, equipment, passengers
and luggage to your vehicle, do not exceed the
total weight capacity of the vehicle or of the front
2004 Mustang(mus)
Owners Guide (post-2002-fmt)
USA English(fus)
Accessories
226
Page 230 of 240

E
Emergencies, roadside
jump-starting ........ 136
Emergency Flashers 124
Emission control
system ...................... 191
Engine ...................... 221
cleaning ................. 155
coolant ................... 174
idle speed control . 171
lubrication
specifications. 218, 221
refill capacities ...... 215
service
points ............. 164–166
Engine block
heater ....................... 103
Engine oil ................ 167
checking and
adding .................... 167
dipstick .................. 167
filter,
specifications. 170, 215
recommendations . 170
refill capacities ...... 215
specifications. 218, 221
Exhaust fumes ........ 103
F
Floor mats ................. 50
Fluid capacities ....... 215
Foglamps ................... 35
Fuel .......................... 182
calculating fuel
economy ................ 187
cap ......................... 184
capacity ................. 215choosing the
right fuel ................ 185
comparisons with
EPA fuel economy
estimates ............... 191
detergent in fuel ... 187
filling your vehicle
with fuel. 182, 184, 188
filter,
specifications. 187, 215
improving fuel
economy ................ 187
octane
rating ..... 185–186, 221
quality .................... 186
running out of fuel 187
safety information
relating to automotive
fuels ....................... 182
Fuses ................ 125–126
G
Gas cap (see
Fuel cap) ................. 184
Gas mileage (see
Fuel economy) ........ 187
Gauges ....................... 14
H
Hazard flashers ....... 124
Head restraints ......... 64
Headlamps ................. 35
aiming ...................... 37
bulb specifications .. 39
daytime running
lights ........................ 35
flash to pass ............ 36
high beam ............... 36
replacing bulbs ....... 40
2004 Mustang(mus)
Owners Guide (post-2002-fmt)
USA English(fus)
Index
230
Page 231 of 240

turning on and off .. 35
Heating
heating and air
conditioning system.33
Hood ........................ 162
I
Ignition ............... 99, 221
Infant seats (see
Safety seats) ............. 88
Inspection/maintenance
(I/M) testing ............ 193
Instrument panel
cleaning ................. 157
cluster ...................... 10
lighting up panel
and interior ............. 36
J
Jump-starting your
vehicle ...................... 136
K
Keys
positions of the
ignition .................... 99
L
Lamps
bulb replacement
specifications
chart ........................ 39
daytime running
light .......................... 35
fog lamps ................. 35
headlamps ......... 35, 40headlamps, flash
to pass ..................... 36
instrument panel,
dimming ................... 36
interior lamps ... 38–39
replacing
bulbs ............ 38, 40–42
Lane change indicator
(see Turn signal) ...... 38
Lights, warning and
indicator .................... 10
anti-lock brakes
(ABS) .................... 104
Limited slip axle
(see Traction Loc) .. 108
Load limits ............... 117
Locks
doors ........................ 54
Lubricant
specifications ... 218, 221
Lug nuts, anti-theft . 134
Lumbar support,
seats ........................... 65
M
Manual transmission. 114
fluid capacities ...... 215
lubricant
specifications ........ 221
reverse ................... 115
Mirrors
side view mirrors
(power) ................... 46
Motorcraft
parts ................. 187, 215
O
Octane rating .. 185–186
2004 Mustang(mus)
Owners Guide (post-2002-fmt)
USA English(fus)
Index
231