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 9 of 240
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
9
Page 99 of 240

STARTING
Positions of the ignition
1. ACCESSORY, allows
the electrical
accessories such as the
radio to operate while
the engine is not
running.
2. LOCK, locks the
steering wheel, automatic transmission gearshift
lever and allows key removal. For vehicles equipped
with a manual transmission, you must depress the
ignition release lever to release the key.
3. OFF, shuts off the engine and all accessories
without locking the steering wheel. This position
also allows the automatic transmission shift lever to
be moved from the P (Park) position without the
brake pedal being depressed.
When the key is in the ignition and in the
OFF position, the automatic transmission
shift lever can be moved from the P (Park)
position without the brake pedal depressed. To
avoid unwanted vehicle movement, always set the
parking brake.
4. ON, all electrical circuits operational. Warning
lights illuminated. Key position when driving.
5. START, cranks the engine. Release the key as
soon as the engine starts.
Preparing to start your vehicle
Engine starting is controlled by the powertrain
control system. This system meets all Canadian
Interference-Causing Equipment standard
requirements regulating the impulse electrical field
strength of radio noise.
When starting a fuel-injected engine, don’t press the
accelerator before or during starting. Only use the
3
1
2
5
4
2004 Mustang(mus)
Owners Guide (post-2002-fmt)
USA English(fus)
Driving
99
Page 105 of 240

Even when the ABS is
disabled, normal
braking is still effective.
(If your BRAKE
warning lamp illuminates with the parking brake
released, have your brake system serviced
immediately.)
Using ABS
When hard braking is required, apply continuous
force on the brake pedal; do not pump the brake
pedal since this will reduce the effectiveness of the
ABS and will increase your vehicle’s stopping
distance. The ABS will be activated immediately,
allowing you to retain full steering control during
hard braking and on slippery surfaces. However, the
ABS does not decrease stopping distance.
Hydraulic brake booster system (Hydroboost)
(if equipped)
The Hydroboost system receives fluid pressure from
the power steering pump to provide power assist
during braking.
For Hydroboost-equipped vehicles operating under
normal conditions, the noise of the fluid flowing
through the booster may be heard whenever the
brake is applied. This condition is normal; vehicle
service is not required.
If braking performance or pedal response becomes
very poor, even when the pedal is strongly
depressed, it may indicate the presence of air in the
hydraulic system or leakage of fluid. Stop the vehicle
safely as soon as possible and seek service
immediately.
P!
BRAKE
2004 Mustang(mus)
Owners Guide (post-2002-fmt)
USA English(fus)
Driving
105
Page 106 of 240

Parking brake
To set the parking
brake (1), pull the
parking brake handle
up as far as possible.
The BRAKE warning
lamp will illuminate and
will remain illuminated
until the parking brake
is released.
To release, press and hold the button (2), pull the
handle up slightly, then push the handle down.
Always set the parking brake fully and make
sure that the gearshift is securely latched in
P (Park) (automatic transmission) or in 1 (First)
(manual transmission).
If the parking brake is fully released, but the
brake warning lamp remains illuminated, the
brakes may not be working properly. See your
dealer or a qualified service technician.
STEERING
To prevent damage to the power steering system:
•Never hold the steering wheel at its furthest
turning points (until it stops) for more than a few
seconds when the engine is running.
•Do not operate the vehicle with a low power
steering pump fluid level (below the MIN mark on
the reservoir).
If the power steering system breaks down (or if the
engine is turned off), you can steer the vehicle
manually, but it takes more effort.
If the steering wanders or pulls, check for:
•an improperly inflated tire
12
P!
BRAKE
2004 Mustang(mus)
Owners Guide (post-2002-fmt)
USA English(fus)
Driving
106
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 164 of 240
IDENTIFYING COMPONENTS IN THE ENGINE
COMPARTMENT
OHV V6 engine
1. Engine oil filler cap
2. Engine oil dipstick
3. Brake fluid reservoir
4. Power distribution box
5. Windshield washer fluid reservoir
6. Battery
7. Power steering fluid reservoir
8. Engine coolant reservoir
9. Air filter assembly
10. Automatic transmission fluid dipstick (if
equipped)
6
1023
4
5
789
1
2004 Mustang(mus)
Owners Guide (post-2002-fmt)
USA English(fus)
Maintenance and Specifications
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Page 165 of 240
4.6L SOHC V8 engine
1. Engine oil dipstick
2. Brake fluid reservoir
3. Power distribution box
4. Windshield washer fluid reservoir
5. Battery
6. Engine coolant reservoir
7. Power steering fluid reservoir
8. Engine oil filler cap
9. Air filter assembly
10. Automatic transmission fluid dipstick (if
equipped)
2004 Mustang(mus)
Owners Guide (post-2002-fmt)
USA English(fus)
Maintenance and Specifications
165