light FORD MUSTANG 2003 4.G Service Manual

To release the parking
brake, the brake handle
may need to be pulled
up slightly to release
pressure before
pushing in the button.
Push the button on the
end of the parking
brake handle and push the handle down as far as
possible. Driving with the parking brake applied will
cause the brakes to wear out quickly and reduce fuel
economy.
Anti-lock brake system (ABS)
On vehicles equipped with an anti-lock braking
system (ABS), a noise from the hydraulic pump
motor and pulsation in the pedal may be observed
during ABS braking events. Pedal pulsation coupled
with noise while braking under panic conditions or
on loose gravel, bumps, wet or snowy roads is
normal and indicates proper functioning of the
vehicle’s anti-lock brake system. The ABS performs a
self-check after you start the engine and begin to
drive away. A brief mechanical noise may be heard
during this test. This is normal. If a malfunction is
found, the ABS warning light will come on. If the
vehicle has continuous vibration or shudder in the
steering wheel while braking, the vehicle should be
inspected by a qualified service technician.
The ABS operates by
detecting the onset of
wheel lockup during
brake applications and
compensates for this
tendency. The wheels
are prevented from
locking even when the brakes are firmly applied. The
accompanying illustration depicts the advantage of
an ABS equipped vehicle (on bottom) to a non-ABS
equipped vehicle (on top) during hard braking with
loss of front braking traction.
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140

ABSwarning lampABS
TheABSwarning lamp in the instrument cluster
momentarily illuminates when the ignition is turned
to the ON position. If the light does not illuminate
momentarily at start up, remains on or continues to
flash, the ABS needs to be serviced.
With the ABS light on,
the anti-lock brake
system is disabled and
normal braking is still
effective unless the brake warning light also remains
illuminated with parking brake released. (If your
brake warning lamp illuminates, have your vehicle
serviced immediately.)
Using ABS
•In an emergency or when maximum efficiency
from the four-wheel ABS is required, apply
continuous force on the brake. The four wheel
ABS will be activated immediately, thus allowing
you to retain full steering control of your vehicle
and, providing there is sufficient space, will
enable you to avoid obstacles and bring the
vehicle to a controlled stop.
•The anti-lock system does not reduce stopping
distance. Always leave enough room between your
vehicle and the vehicle in front of you to stop.
•We recommend that you familiarize yourself with
this braking technique. However, avoid taking any
unnecessary risks.
Hydraulic brake booster system (Hydroboost)
The Hydroboost system receives fluid pressure from
the power steering pump to provide power assist
during braking.
The sound of the pump operating may be heard by
the driver, but this is a normal characteristic of the
system.
For Hydroboost-equipped vehicles operating under
normal conditions, the noise of the fluid flowing
P!
BRAKE
Driving
141

surfaces.The system operates by detecting and
controlling wheel spin. The system borrows many of
the electronic and mechanical elements already
present in the anti-lock braking system (ABS).
Wheel-speed sensors allow excess rear wheel spin to
be detected by the Traction Control
portion of the
ABS computer. Any excessive wheel spin is
controlled by automatically applying and releasing
the rear brakes in conjunction with engine torque
reductions. Engine torque reduction is realized via
the fully electronic spark and fuel injection systems.
This process is very sensitive to driving conditions
and very fast acting. The rear wheels“search”for
optimum traction several times a second and
adjustments are made accordingly.
The Traction Control
system will allow your
vehicle to make better use of available traction on
slippery surfaces. The system is a driver aid which
makes your vehicle easier to handle primarily on
snow, ice covered and gravel roads.
During Traction
Control
operation,
the traction control
active light will
illuminate, you may hear an electric motor type of
sound coming from the engine compartment and the
engine will not“rev-up”when you push further on
the accelerator. This is normal system behavior.
The Traction Control

on/off switch, located
below the radio,
illuminates when the
system is OFF. The
Traction Control
system will revert to the ON
position every time the ignition is turned OFF and
ON.
If you should become stuck in snow or ice or on a
very slippery road surface, try switching the Traction
Control
system off. This may allow excess wheel
spin to“dig”the vehicle out and enable a successful
“rocking”maneuver.
Driving
143

3. Start the vehicle.
If it is necessary to use the above procedure to
move the gearshift lever, it is possible that a fuse
has blown or the vehicle’s brakelamps are not
operating properly. Refer toFuses and relaysin the
Roadside emergencieschapter.
Do not drive your vehicle until you verify
that the brakelamps are working.
If your vehicle gets stuck in mud or snow it may be
rocked out by shifting from forward and reverse
gears, stopping between shifts, in a steady pattern.
Press lightly on the accelerator in each gear.
Do not rock the vehicle if the engine is not at
normal operating temperature or damage to
the transmission may occur.
Do not rock the vehicle for more than a few
minutes or damage to the transmission and
tires may occur or the engine may overheat.
Always set the parking brake fully and make
sure the gearshift is latched in P (Park).
Turn the ignition to the LOCK position and remove
the key whenever you leave your vehicle.
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.
Driving
145

(Overdrive)
The normal driving
position for the best
fuel economy.
Transmission operates
in gears one through
four.
(Overdrive) can be
deactivated by pressing
the transmission
control switch on the
gearshift lever.
The transmission
control indicator light
(TCIL) will illuminate
on the instrument
cluster.
Drive–Not shown on the display. Activate by
pressing the transmission control switch on the
gearshift lever with the gearshift in the
position.
The O/D OFF indicator will illuminate on the
instrument cluster. Transmission operates in gears
one through three.
(Drive) provides more engine
braking than
(Overdrive) and is useful when:
•driving with a heavy load.
•towing a trailer up or down steep hills.
•additional engine braking is desired. If towing a
trailer, refer toDriving while you towin this
chapter.
O/ D
OFF
Driving
148

Removingkeyfrom ignition
•Turn the ignition key
to position 3 (OFF).
•Push the release
lever forward and
rotate the key
towards you and
remove.
DRIVING THROUGH WATER
Do not drive quickly through standing water,
especially if the depth is unknown. Traction or brake
capability may be limited and if the ignition system
gets wet, your engine may stall. Water may also
enter your engine’s air intake and severely damage
your engine.
If driving through deep or standing water is
unavoidable, proceed very slowly. Never drive
through water that is higher than the bottom of the
hubs (for trucks) or the bottom of the wheel rims
(for cars).
Once through the water, always try the brakes. Wet
brakes do not stop the vehicle as effectively as dry
brakes. Drying can be improved by moving your
vehicle slowly while applying light pressure on the
brake pedal.
Driving through deep water where the
transmission vent tube is submerged may allow
water into the transmission and cause internal
transmission damage. Have the fluid checked
and, if water is found, replace the fluid.
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153

•The hazard lights
control is located on
top of the steering
column.
•Depress hazard
lights control to
activate all hazard
flashers
simultaneously.
•Depress control again to turn the flashers off.
FUEL PUMP SHUT-OFF SWITCH
FUEL
RESET
The fuel pump shut-off switch is a device intended
to stop the electric fuel pump when your vehicle has
been involved in a substantial jolt.
After a collision, if the engine cranks but does not
start, the fuel pump shut-off switch may have been
activated.
The fuel pump shut-off
switch is located on the
left side of the trunk
between the left rear
tail light and the trunk
liner, and to the left of
the hole in the trunk
liner. If you are unable
to access the switch
through the hole, loosen the trunk liner near the
switch by removing the cargo net hook and pulling
the liner forward to expose the switch.
Use the following procedure to reset the fuel pump
shut-off switch.
1. Turn the ignition to the OFF position.
2. Check the fuel system for leaks.
3. If no fuel leak is apparent, reset the fuel pump
shut-off switch by pushing in on the reset button.
4. Turn the ignition to the ON position. Pause for a
few seconds and return the key to the OFF position.
5. Make a further check for leaks in the fuel system.
Roadside Emergencies
159

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
11 15A Back-up lamps
12—Not used
13 15A Electronic flasher
14—Not used
15 15A Power lumbar
SEE OWNERS MANUAL FOR FUSE INFO
4212345
76891011
131214151617
191820212223
252426272829
313032333435
373638394041
43
44
Roadside Emergencies
161

Connecting the jumper cables
1. Connect the positive (+) booster cable to the
positive (+) terminal of the discharged battery.
Note:In the illustrations,lightning boltsare used
to designate the assisting (boosting) battery.
2. Connect the other end of the positive (+) cable to
the positive (+) terminal of the assisting battery.
3. Connect the negative (-) cable to the negative (-)
terminal of the assisting battery.
+–+–
+–+–
+–+–
Roadside Emergencies
171

Removing the jumper cables
Remove the jumper cables in the reverse order
that they were connected.
1. Remove the jumper cable from thegroundmetal
surface.
Note:In the illustrations,lightning boltsare used
to designate the assisting (boosting) battery.
2. Remove the jumper cable on the negative (-)
connection of the booster vehicle’s battery.
3. Remove the jumper cable from the positive (+)
terminal of the booster vehicle’s battery.
+–+–
+–+–
+–+–
Roadside Emergencies
173