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 33 of 240

MANUAL HEATING AND AIR CONDITIONING
SYSTEM
1.Fan speed
adjustment:Controls
the volume of air
circulated in the
vehicle.
2.Temperature selection:Controls the
temperature of the airflow in the vehicle.
3.Air flow selections:Controls the direction of
the airflow in the vehicle. See the following for a
brief description on each control.
MAX A/C:Uses recirculated air through the
instrument panel registers to cool the vehicle. This
mode is more noisy than A/C, but is more
economical and efficient. May reduce undesirable
odors from entering the vehicle.
A/C:Uses outside air to cool the vehicle. Air flows
from the instrument panel register vents only.
:Distributes outside air through the instrument
panel vents.
O (OFF):Outside air is shut out and the fan will
not operate.
:Distributes outside air through the floor vents.
:Distributes outside air through the windshield
defroster vents and floor vents.
:Distributes outside air through the windshield
defroster vents.
OPERATING TIPS
•To reduce fog build up on the windshield during
humid weather, place the air flow selector in
the
position.
•To reduce humidity build up inside the vehicle:
duringcold weather,do not drive with the air
flow selector in the OFF or MAX A/C position.
duringwarm weather,do not drive with the air
flow selector in the OFF position.
2004 Mustang(mus)
Owners Guide (post-2002-fmt)
USA English(fus)
Climate Controls
33
Page 104 of 240

Important ventilating information
If the engine is idling while the vehicle is stopped
for a long period of time, open the windows at least
2.5 cm (one inch) or adjust the heating or air
conditioning to bring in fresh air.
BRAKES
Occasional brake noise is normal. If a metal-to-metal,
continuous grinding or continuous squeal sound is
present, the brake linings may be worn-out and
should be inspected by a qualified service
technician. If the vehicle has continuous vibration or
shudder in the steering wheel while braking, the
vehicle should be inspected by a qualified service
technician.
Refer toBrake system
warning lightin the
Instrument Cluster
chapter for information
on the brake system warning light.
Four-wheel anti-lock brake system (ABS)
(if equipped)
Your vehicle may be equipped with an Anti-lock
Braking System (ABS). This system helps you
maintain steering control during emergency stops by
keeping the brakes from locking. Noise from the
ABS pump motor and brake pedal pulsation may be
observed during ABS braking; any pulsation or
mechanical noise you may feel or hear is normal.
ABS warning lamp
ABS
The ABS lamp in the
instrument cluster
momentarily illuminates
when the ignition is
turned to ON. If the light does not illuminate during
start up, remains on or flashes, the ABS may be
disabled and may need to be serviced.
P!
BRAKE
ABS
2004 Mustang(mus)
Owners Guide (post-2002-fmt)
USA English(fus)
Driving
104
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