Page 62 of 240

Automatic disarming
Switching the ignition to the 4 (ON) position with a
coded keydisarms the vehicle.
•The
THEFTindicator will illuminate for three
seconds and then go out.
•If the
THEFTindicator stays on for an extended
period of time or flashes rapidly, have the system
serviced by your dealer.
Replacement keys
If your keys are lost or stolen and you don’t have an
extra coded key, you will need to have your vehicle
towed to a dealership. The key codes need to be
erased from your vehicle and new coded keys will
need to be programmed.
Replacing coded keys can be very costly. Store an
extra programmed key away from the vehicle in a
safe place to help prevent any inconveniences.
Please visit an authorized dealer to purchase
additional spare or replacement keys.
Programming spare keys
You can program your own coded keys to your
vehicle. Please read and understand the entire
procedure before you begin.
Tips:
•A maximum of eight keys can be coded to your
vehicle.
•Only use Securilockkeys.
•You must have two previously programmed coded
keys (keys that already operate your vehicle’s
engine) and the new unprogrammed key(s)
readily accessible.
•If no previously programmed coded keys are
available, you must take your vehicle to your
dealer to have the spare key(s) programmed.
2004 Mustang(mus)
Owners Guide (post-2002-fmt)
USA English(fus)
Locks and Security
62
Page 130 of 240
Fuse/Relay
LocationFuse Amp
RatingPower Distribution Box
Description
13 30A* MACH 1000 left amplifiers
14 20A* Fuel pump
15 30A* MACH 1000 right amplifiers
16 20A* Horn
17 20A* ABS
18 30A* Power seats
19 10A* Intercooler pump (Cobra
only)
20 20A* Alternator
21—Not used
22—Not used
23—Not used
24 20A* A/C pressure
25—Not used
26 30A** PCM
27 20A** Daytime Running Lamps
(DRL) module, Foglamp
relay
28 25A CB Convertible top circuit
breaker
29—Not used
* Mini Fuses ** Maxi Fuses
CHANGING A FLAT TIRE
If you get a flat tire while driving:
•do not brake heavily.
•gradually decrease the vehicle’s speed.
•hold the steering wheel firmly.
•slowly move to a safe place on the side of the
road.
The use of tire sealants may damage your
tires.
Temporary spare tire information
Your vehicle may have a temporary spare tire which
is labeled as such. It is smaller than a regular tire
2004 Mustang(mus)
Owners Guide (post-2002-fmt)
USA English(fus)
Roadside Emergencies
130
Page 131 of 240

and is designed for emergency use only. Replace this
tire with a full-size tire as soon as possible.
Installing a tire on either or both sides of the driven
axle that is of a different size than the original road
tire is not recommended since this will affect the
accuracy of the speedometer and odometer. If
different size tires must be installed, it is important
that all four be the same size.
If one or more tires of the four are of a
different size, the ABS and traction control
system (if equipped) may not function correctly or
may not function at all. The temporary spare
supplied with the vehicle is the only different size
tire that should ever be installed.
If you use the temporary spare tire
continuously or do not follow these
precautions, the tire could fail, causing you to lose
control of the vehicle, possibly injuring yourself or
others.
When driving with the temporary spare tire do not:
• use more than one temporary spare tire at a time
• exceed 80 km/h (50 mph) or drive further than
3,200 km (2,000 miles) total under any
circumstances
• load the vehicle beyond maximum vehicle load
rating listed on the tire pressure label on the
driver’s side b-pillar
• tow a trailer
• use tire chains
• drive through an automatic car wash, because of
the vehicle’s reduced ground clearance
• try to repair the temporary spare tire or remove it
from its wheel
• use the wheel for any other type of vehicle
Use of a temporary spare tire at any one wheel
location can lead to impairment of the following:
2004 Mustang (mus)
Owners Guide (post-2002-fmt)
USA English (fus)
Roadside Emergencies
131
Page 133 of 240
To change the tire:
Note:Passengers should not remain in the vehicle
when the vehicle is being jacked.
1. Block both the front
and rear of the wheel
diagonally opposite the
flat tire. For example,
if the left front tire is
flat, block the right rear wheel.
2. Remove the spare
tire, jack and lug
wrench.
3. Remove the center
ornament (if equipped)
from the wheel. Loosen
each wheel lug nut
one-half turn counter-
clockwise but do not
remove them until the
wheel is raised off the
ground.
4. Put the jack in the
jack notch next to the
tire you are changing.
Turn the jack handle
clockwise until the
wheel is completely off
the ground.
2004 Mustang (mus)
Owners Guide (post-2002-fmt)
USA English (fus)
Roadside Emergencies
133
Page 134 of 240

Never use the rear
differential as a
jacking point.
To lessen the risk of personal injury, do not
put any part of your body under the vehicle
while changing a tire. Do not start the engine
when your vehicle is on the jack. The jack is only
meant for changing the tire.
5. Remove the lug nuts with the lug wrench.
6. Replace the flat tire with the spare tire, making
sure the valve stem is facing outward. Reinstall lug
nuts until the wheel is snug against the hub. Do not
fully tighten the lug nuts until the wheel has been
lowered.
If you are using the temporary tire, the lug nut
washers will not appear to be flush with the rim. This
is normal only when using the temporary spare tire.
7. Lower the wheel by turning the jack handle
counterclockwise.
8. Remove the jack and
fully tighten the lug
nuts in the order
shown.
9. Put flat tire, wheel
ornament (if
equipped), jack and lug
wrench away. Make
sure jack is fastened so it does not rattle when you
drive.
10. Unblock the wheels.
Anti-theft lug nuts (if equipped)
If your vehicle is equipped with this feature, one of
the lug nuts on each wheel must be removed and
1
4
3
2
5
2004 Mustang (mus)
Owners Guide (post-2002-fmt)
USA English (fus)
Roadside Emergencies
134
Page 135 of 240

replaced with a special key. The key and registration
card are attached to the lug wrench and stored with
the spare tire. If you lose the key, send the
registration card to the manufacturer (not the
dealer) to get a replacement key. If the lug
wrench/lug nut key assembly is lost, see your
nearest Ford or Lincoln Mercury dealer who has
access to the master set of keys.Do not use an
impact wrench with the anti-theft key.
To remove the
anti-theft lug nut:
1. Insert the key over
the locking lug nut.
Make sure you hold the key square to the lug nut. If
you hold the key at an angle, you could damage the
key and the lug nut.
2. Place the lug nut wrench over the lug nut key and
apply pressure on the key with the wrench.
3. Turn the wrench in a counterclockwise direction
to remove the lug nut.
To install the anti-theft lug nut:
1. Insert the key over the locking lug nut.
2. Place the lug nut wrench over the lug nut key and
apply pressure on the key with the wrench.
3.
Install the lug nut by turning the wrench clockwise.
Wheel lug nut torque specifications
Retighten the lug nuts to the specified torque at
800 km (500 miles) after any wheel disturbance
(tire rotation, changing a flat tire, wheel removal,
etc.).
Bolt size Wheel lug nut torque*
Nm Lb-ft
1⁄2x 20 120-147 88-108
* Torque specifications are for nut and bolt threads free of
dirt and rust. Use only Ford recommended replacement
fasteners.
2004 Mustang (mus)
Owners Guide (post-2002-fmt)
USA English (fus)
Roadside Emergencies
135
Page 200 of 240

•Fill level for V8
(except Cobra)
4. Add enough fluid through the filler opening to
bring the fluid up to the recommended levels.
5. Install and tighten the fill plug securely.
Use only fluid that meets Ford specifications. Refer
toLubricant Specificationsin this chapter.
INFORMATION ABOUT UNIFORM TIRE QUALITY
GRADING
New vehicles are fitted
with tires that have a
rating on them called
Tire Quality Grades.
The Quality grades can
be found where
applicable on the tire sidewall between tread
shoulder and maximum section width. For example:
•Treadwear 200 Traction AA Temperature A
These Tire Quality Grades are determined by
standards that the United States Department of
Transportation has set.
Tire Quality Grades apply to new pneumatic tires for
use on passenger cars. They do not apply to deep
tread, winter-type snow tires, space-saver or
temporary use spare tires, tires with nominal rim
diameters of 10 to 12 inches or limited production
tires as defined in Title 49 Code of Federal
Regulations Part 575.104(c)(2).
U.S. Department of Transportation-Tire quality
grades:The U.S. Department of Transportation
requires Ford to give you the following information
about tire grades exactly as the government has
written it.
2004 Mustang(mus)
Owners Guide (post-2002-fmt)
USA English(fus)
Maintenance and Specifications
200
Page 208 of 240

Information on“T”type tires
T145/80D16 is an
example of a tire size.
Note:The temporary
tire size for your
vehicle may be
different than this
example.
1.T:Indicates a type
of tire, designated by
the Tire and Rim
Association (T&RA),
that is intended for
temporary service on
cars, SUVs, minivans and light trucks.
2.145:Indicates the nominal width of the tire in
millimeters from sidewall edge to sidewall edge. In
general, the larger the number, the wider the tire.
3.80:Indicates the aspect ratio which gives the
tires ratio of height to width. Numbers of 70 or
lower indicate a short sidewall.
4.D:Indicates a“diagonal”type tire.
R:Indicates a“radial”type tire.
5.16:Indicates the wheel or rim diameter in inches.
If you change your wheel size, you will have to
purchase new tires to match the new wheel
diameter.
Location of the tire label
You will find a tire label containing tire inflation
pressure by tire size and other important
information located on the B-Pillar or the driver’s
door.
TIRE CARE
Improper or inadequate vehicle maintenance can
also cause tires to wear abnormally. Here are some
of the important maintenance items
SPARETIRE
TEMPORARYUSEONLYINFLATETO60P.S.I.T
T145/80D16105M
2004 Mustang(mus)
Owners Guide (post-2002-fmt)
USA English(fus)
Maintenance and Specifications
208