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Vehicle Symbol Glossary
Child Safety Door
Lock/Unlock
Interior Luggage
Compartment
Release Symbol
Panic AlarmEngine Oil
Engine CoolantEngine Coolant
Temperature
Do Not Open When
HotBattery
Avoid Smoking,
Flames, or SparksBattery Acid
Explosive GasFan Warning
Power Steering
FluidMaintain Correct
Fluid LevelMAX
MIN
Emission SystemEngine Air Filter
Passenger
Compartment Air
FilterJack
Check fuel capLow tire warning
2004 Mustang(mus)
Owners Guide (post-2002-fmt)
USA English(fus)
Introduction
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Page 56 of 240

On hot days, the temperature in the trunk
or vehicle interior can rise very quickly.
Exposure of people or animals to these high
temperatures for even a short time can cause
death or serious heat-related injuries, including
brain damage. Small children are particularly at
risk.
REMOTE ENTRY SYSTEM
This device complies with part 15 of the FCC rules
and with RS-210 of Industry Canada. Operation is
subject to the following two conditions: (1) This
device may not cause harmful interference, and (2)
This device must accept any interference received,
including interference that may cause undesired
operation.
Changes or modifications not expressly
approved by the party responsible for
compliance could void the user’s authority to
operate the equipment.
Your vehicle is equipped with a remote entry system
which allows you to:
•unlock the vehicle
doors without a key.
•lock all the vehicle
doors without a key.
•activate the personal
alarm.
•release the decklid.
These features will not operate when the ignition is
in the RUN or START position.
If there is any potential remote keyless entry
problem with your vehicle, ensureALL remote
entry transmittersare taken to the dealership, to
aid in troubleshooting.
2004 Mustang(mus)
Owners Guide (post-2002-fmt)
USA English(fus)
Locks and Security
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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
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Illuminated entry
The interior lamps illuminate when the remote entry
system is used to unlock the door(s) or sound the
personal alarm.
The illuminated entry system will turn off the
interior lights if:
•the ignition switch is turned to the ON position,
or
•the remote transmitter lock control is pressed, or
•after 25 seconds of illumination.
The dome lamp control (if equipped) mustnotbe
set to the OFF position for the illuminated entry
system to operate.
The inside lights will not turn off if:
•they have been turned on with the dimmer
control, or
•any door is open.
The battery saver will shut off the interior lamps 30
minutes after the ignition has been turned to the
OFF position, 10 minutes after if the last door is left
open, and 30 minutes after if the trunk is left open
or the dome lamp switch is left on.
SECURILOCKPASSIVE ANTI-THEFT SYSTEM
SecuriLockpassive anti-theft system is an engine
immobilization system. This system is designed to
prevent the engine from being started unless a
coded key programmed to your vehicleis used.
The use of the wrong type of coded key may lead to
a“no-start”condition.
Your vehicle comes with two coded keys; additional
coded keys may be purchased from your dealer. The
dealer can program your spare keys to your vehicle
or you can program the keys yourself. Refer to
Programming spare keysfor instructions on how
to program the coded key.
Note:The SecuriLockpassive anti-theft system is
not compatible with non-Ford aftermarket remote
2004 Mustang(mus)
Owners Guide (post-2002-fmt)
USA English(fus)
Locks and Security
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or rear axle (GVWR or GAWR as indicated on the
Safety Compliance Certification label). Consult
your dealer for specific weight information.
•The Federal Communications Commission (FCC)
and Canadian Radio Telecommunications
Commission (CRTC) regulate the use of mobile
communications systems—such as two-way
radios, telephones and theft alarms - that are
equipped with radio transmitters. Any such
equipment installed in your vehicle should comply
with FCC or CRTC regulations and should be
installed only by a qualified service technician.
•Mobile communications systems may harm the
operation of your vehicle, particularly if they are
not properly designed for automotive use.
2004 Mustang(mus)
Owners Guide (post-2002-fmt)
USA English(fus)
Accessories
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