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
13
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
2004 Mustang(mus)
Owners Guide (post-2002-fmt)
USA English(fus)
Lights
38
Page 41 of 240
Replacing front parking lamp/turn signal bulbs
1. Make sure the headlamp control is in the OFF
position and 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
rotate the bulb socket
counterclockwise and remove from lamp assembly.
4. Pull the bulb straight
out from the socket
and push in the new
bulb.
Install the new bulb in reverse order.
Replacing high-mount brakelamp bulbs
1. Make sure the
headlamp switch is in
the OFF position and
then open the trunk.
2. Inside trunk, locate
access hole under the
rear decklid.
3. Rotate the bulb
socket
counterclockwise and
pull it out of the lamp assembly.
4. Carefully pull the bulb straight out of socket.
Install the new bulb in reverse order.
2004 Mustang(mus)
Owners Guide (post-2002-fmt)
USA English(fus)
Lights
41
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