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
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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 57 of 240

Unlocking the doors
1. Pressand release to unlock the driver’s door.
Note:The interior lamps will illuminate.
2. Press
and release again within three seconds
to unlock the passenger door.
Locking the doors
1. Pressand release to lock all the doors.Note:
The interior lamps will turn off (unless the dome
lamp control is in the full-up position), and the
headlamps and parking lamps will flash.
2. Press
and release again within three seconds
to confirm that all the doors are closed and locked.
Note:The doors will lock again, the horn will chirp
once and the headlamps and parking lamps will
flash.
If any of the doors are not properly closed the horn
will make two quick chirps.
Sounding a panic alarm
Press
to activate the alarm. The horn will
sound for a maximum of 30 seconds and the
parklamps will flash for a maximum of 3 minutes.
Press again or turn the ignition to ON to deactivate,
or wait for the alarm to timeout in 3 minutes.
Note:The panic alarm will only operate when the
ignition is in the OFF or ACC position.
Opening the trunk
Pressonce to open the trunk.
•Ensure that the trunk is closed and latched before
driving your vehicle. Failure to properly latch the
trunk may cause objects to fall out or block the
driver’s rear view.
Replacing the battery
The remote entry transmitter uses one coin type
three-volt lithium battery CR2032 or equivalent. The
2004 Mustang(mus)
Owners Guide (post-2002-fmt)
USA English(fus)
Locks and Security
57
Page 77 of 240

•The gearshift is in P (Park) (automatic
transmission) or the neutral position (manual
transmission).
•The ignition switch is in the OFF position.
•All vehicle doors are closed.
•The driver’s safety belt is unbuckled.
•The parklamps/headlamps are in OFF position (If
vehicle is equipped with Autolamps, this will not
affect the procedure).
To reduce the risk of injury, do not
deactivate/activate the Belt Minder feature
while driving the vehicle.
BeltMinder activation and deactivation
procedure
1. Turn the ignition switch to the RUN (or ON)
position. (DO NOT START THE ENGINE.)
2. Wait until the safety belt warning light turns off.
(Approximately 1–2 minutes.)
•Steps 3–5 must be completed within 60 seconds
or the procedure will have to be repeated.
3. Buckle then unbuckle the safety belt three times,
ending with the safety belt unbuckled. This can be
done before or during BeltMinder warning activation.
4. Turn on the parklamps/headlamps, turn off the
parklamps/headlamps.
5. Buckle then unbuckle the safety belt three times,
ending with the safety belt unbuckled.
•After step 5 the safety belt warning light will be
turned on for three seconds.
6. Within seven seconds of the safety belt warning
light turning off, buckle then unbuckle the safety
belt.
•This will disable BeltMinder if it is currently
enabled, or enable BeltMinder if it is currently
disabled.
2004 Mustang(mus)
Owners Guide (post-2002-fmt)
USA English(fus)
Seating and Safety Restraints
77
Page 101 of 240
Before starting the vehicle:
1. Make sure all occupants buckle their safety belts.
For more information on safety belts and their
proper usage, refer to theSeating and Safety
Restraintschapter.
2. Make sure the headlamps and electrical
accessories are off.
If starting a vehicle with an automatic transmission:
•Make sure the
parking brake is set.
•Make sure the
gearshift is in P
(Park).
If starting a vehicle
with a manual
transmission:
1. Make sure the
parking brake is set.
2. Push the clutch
pedal to the floor.
2004 Mustang(mus)
Owners Guide (post-2002-fmt)
USA English(fus)
Driving
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Page 126 of 240
Passenger compartment fuse panel
The fuse panel is located below and to the left of
the steering wheel by the brake pedal. Remove the
panel cover to access the fuses.
To remove a fuse use the fuse puller tool provided
on the fuse panel cover.
The fuses are coded as follows:
Fuse/Relay
LocationFuse Amp
RatingPassenger Compartment
Fuse Panel Description
1 20A Cigar lighter
2 20A Engine controls
3—Not used
4 10A Right-hand low beam
headlamp
5 15A Instrument cluster, Traction
control switch
6 20A Starter motor relay
7 15A GEM, Interior lamps
8 20A Engine controls
9 30A Mach 460 subwoofers
10 10A Left-hand low beam
headlamp
SEE OWNERS MANUAL FOR FUSE INFO
4212345
76891011
131214151617
191820212223
252426272829
313032333435
373638394041
43
44
2004 Mustang(mus)
Owners Guide (post-2002-fmt)
USA English(fus)
Roadside Emergencies
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Page 129 of 240
The high-current fuses are coded as follows.
Fuse/Relay
LocationFuse Amp
RatingPower Distribution Box
Description
Relay 1—Fog lamp interrupt
Relay 2—Interval wiper
Relay 3—Wiper HI/LO
Relay 4—Starter
Relay 5—Fog lamps
1 50A** (4.6L),
30A CB
(3.8L)Electric cooling fan motor
2 30A** Headlamps
3 40A** Starter motor relay, Ignition
switch
4 40A** Ignition switch
5 40A** Ignition switch
6 40A** Instrument cluster,
Powertrain Control Module
(PCM)
7—Not used
8 50A** Anti-lock Brake System
(ABS) module
9 20A** Auxiliary power point
10 30A** Parklamps
11 30A** Rear window defrost control
12 40A** Power locks
2004 Mustang(mus)
Owners Guide (post-2002-fmt)
USA English(fus)
Roadside Emergencies
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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