Page 1 of 240
Introduction 4
Instrument Cluster 10
Warning and control lights 10
Gauges 14
Entertainment Systems 18
AM/FM stereo with CD 18
AM/FM stereo with in-dash six CD 25
Climate Controls 33
Manual heating and air conditioning 33
Rear window defroster 34
Lights 35
Headlamps 35
Turn signal control 38
Bulb replacement 38
Driver Controls 43
Windshield wiper/washer control 43
Steering wheel adjustment 44
Power windows 45
Mirrors 46
Speed control 46
Locks and Security 54
Keys 54
Locks 54
Anti-theft system 57
2004 Mustang(mus)
Owners Guide (post-2002-fmt)
USA English(fus)
Table of Contents
1
Page 13 of 240

Overdrive off:
Illuminates when the
overdrive function of
the transmission has been turned off, refer to the
Drivingchapter. If the light flashes steadily or does
not illuminate, have the transmission serviced soon,
or damage may occur.
Traction Control
active:Illuminates
when the Traction
Controlsystem is
active. If the light
remains on, have the system serviced immediately.
Anti-theft system:
Flashes when the
SecurilockPassive
Anti-theft System has been activated.
Turn signal:
Illuminates when the
left or right turn signal
or the hazard lights are turned on. If the indicators
stay on or flash faster, check for a burned out bulb.
High beams:
Illuminates when the
high beam headlamps
are turned on.
Key-in-ignition warning chime:Sounds when the
key is left in the ignition in the OFF/LOCK or ACC
position and the driver’s door is opened.
Headlamps on warning chime:Sounds when the
headlamps or parking lamps are on, the ignition is
off (the key is not in the ignition) and the driver’s
door is opened.O/D
OFF
2004 Mustang(mus)
Owners Guide (post-2002-fmt)
USA English(fus)
Instrument Cluster
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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
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Page 36 of 240
Always remember to turn on your
headlamps at dusk or during inclement
weather. The Daytime Running Light (DRL)
System does not activate your tail lamps and
generally may not provide adequate lighting during
these conditions. Failure to activate your
headlamps under these conditions may result in a
collision.
High beams
Push the lever toward
the instrument panel to
activate. Pull the lever
towards you to
deactivate.
Flash to pass
Pull toward you slightly
to activate and release
to deactivate.
PANEL DIMMER CONTROL
To adjust the
brightness of the
instrument panel:
•Rotate
clockwise/counterclockwise
when the headlamp
control is in the
parking lamp or low-beam position.
To turn on the courtesy lamps:
•Rotate fully counterclockwise.
OFFHI
LO
OFFHI
LO
2004 Mustang(mus)
Owners Guide (post-2002-fmt)
USA English(fus)
Lights
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Page 37 of 240

AIMING THE HEADLAMPS
The headlamps on your vehicle are properly aimed
at the assembly plant.
If your vehicle has been in an accident the alignment
of your headlamps should be checked by a qualified
service technician.
Headlamp vertical aim adjustment
1. Park the vehicle on a level surface approximately
7.6 meters (25 feet) from a vertical wall or screen
directly in front of it.
•(1) Eight feet
•(2) Center height of lamp to ground
•(3) Twenty five feet
•(4) Horizontal
reference line
2. Measure the height
from the center of your
headlamp to the
ground and mark a 2.4
meter (8 foot)
horizontal reference
line on the vertical wall or screen at this height (a
piece of masking tape works well). The center of the
lamp is marked by a 3.0 mm circle on the headlamp
lens.
3. Turn on the low beam headlamps to illuminate the
wall or screen and open the hood.
4. On the wall or
screen you will observe
a light pattern with flat
edges at the top of the
beam pattern. If the
flat edges are not at
the horizontal
reference line, the beam will need to be adjusted.
2004 Mustang(mus)
Owners Guide (post-2002-fmt)
USA English(fus)
Lights
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Page 38 of 240
5. Locate the vertical
adjuster on each
headlamp, then use a 6
mm allen wrench or
screwdriver to adjust
the headlamp up or
down.
6. HORIZONTAL AIM
IS NOT REQUIRED FOR THIS VEHICLE AND IS
NON-ADJUSTABLE.
7. Close the hood and turn off the lamps.
TURN SIGNAL CONTROL
•Push down to
activate the left turn
signal.
•Push up to activate
the right turn signal.
INTERIOR LAMPS
Map lamps (if equipped)
For coupes the map
lamps are located on
the interior roof. Press
the controls on either
side of the lamp to
turn the light on.
BULBS
Replacing exterior bulbs
Check the operation of all the bulbs frequently.
OFFHI
LO
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Owners Guide (post-2002-fmt)
USA English(fus)
Lights
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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
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Page 40 of 240
Replacing headlamp bulbs
To remove the headlamp bulb:
1. Make sure headlamp switch is in the OFF
position, then open the hood.
2. At the back of the
headlamp, pull two
retainer pins up to
release the headlamp
assembly.
3. Pull headlamp
assembly forward and
disconnect the
electrical connector from the bulb by pulling
rearward.
4. Remove the bulb
retaining ring by
rotating it
counterclockwise and
slide off the plastic
base.
5. Remove the old bulb
from the lamp assembly
by pulling it straight
out of the lamp
assembly.
Handle a halogen headlamp bulb carefully
and keep out of children’s reach. Grasp the
bulb only by its plastic base and do not touch the
glass. The oil from your hand could cause the bulb
to break the next time the headlamps are
operated.
Install the new bulb in reverse order.
2004 Mustang(mus)
Owners Guide (post-2002-fmt)
USA English(fus)
Lights
40