2004 Mercury Grand Marquis Cluster

The fuses are coded as follows.
Fuse/Relay
LocationFuse Amp
RatingPassenger Compartment Fuse
Panel Description
1 15A Audio, CD changer
2 5A Audio
3 7.5A Mirrors
4 10A Air bags
5—Not used
6 15A Instrument cluster warning lamps
module, Overdrive control switch,
Lighting Control Module (LCM),
A/C clutch, Analog cluster
7 10A Driver’s Door Module (DDM),
Premium radio
8 25A Powertrain Control Module (PCM)
power relay, Coil-on plugs, Radio
noise capacitor, Passive Anti-Theft
System (PATS)
9 5A Transmission range sensor
27 25
26 2423 21
2219
20
18 16
17 1514 12
131030
32
31
28
29
11
97
8653
41
2
2004 Grand Marquis(grn)
Owners Guide (post-2002-fmt)
USA English(fus)
Roadside Emergencies
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Fuse/Relay
LocationFuse Amp
RatingPassenger Compartment Fuse
Panel Description
10 10A Rear window defrost, Heated
mirrors
11 5A Traction control indicator relay
(ABS w/traction control only)
12 15A Multi-function switch for
turn/hazard lamps
13 5A Radio
14 10A Anti-lock Brake System (ABS),
Instrument Cluster
15 15A Speed control module, LCM,
EATC blower motor relay, Door
lock switch illumination, Heated
seat switch, Moonroof
16 15A Reversing lamps, Shift lock, DRL
module, VAP Steering, Electronic
day/night mirror, Overhead
console, Air suspension, Climate
control, Heated seat module,
Speed chime module (GCC only),
DDM, Back-up lamps
17 7.5A Wiper motor
18—Not used
19 15A Brake lamps, Brake signal for
PCM, ABS and speed control
module, DDM
20—Not used
21 15A LCM for park lamps and interior
illumination, Autolamp/Sunload
sensor
22 20A Speed control servo,
Multi-function switch for hazard
lamps, Brake on/off switch, Feed
for IP fuse 19
2004 Grand Marquis(grn)
Owners Guide (post-2002-fmt)
USA English(fus)
Roadside Emergencies
149

Fuse/Relay
LocationFuse Amp
RatingPassenger Compartment Fuse
Panel Description
23 15A EATC module, Instrument cluster,
LCM, Interior lamps, Door lock
switches
24 10A Left-hand low beam
25 20A Cigar lighter
26 10A Right-hand low beam
27 25A LCM for cornering lamps and high
beam headlamps
28 20A* Power windows
29—Not used
30—Not used
31—Not used
32—Not used
* Circuit breaker
Power distribution box
The power distribution box is located in the engine compartment. The
power distribution box contains high-current fuses that protect your
vehicle’s main electrical systems from overloads.
Always disconnect the battery before servicing high current
fuses.
Always replace the cover to the power distribution box before
reconnecting the battery or refilling fluid reservoirs
If the battery has been disconnected and reconnected, refer to the
Batterysection of theMaintenance and Specificationschapter.
2004 Grand Marquis(grn)
Owners Guide (post-2002-fmt)
USA English(fus)
Roadside Emergencies
150

Fuse/Relay
LocationFuse Amp
RatingPower Distribution Box
Description
16—Not used
17—Not used
18—Not used
19 15A* Powertrain Control Module
(PCM), Fuel injectors
20 15A* PCM, HEGOs
21—Not used
22—Not used
23—Not used
24—Not used
101 30A** Ignition switch, Starter motor
solenoid via starter relay, IP fuses
7, 9, 12 and 14
102 50A** Cooling fan (engine)
103 40A** Blower motor
104 40A** Heated backlight relay
105 30A** PCM power relay, Diagnostic
connector, PDB fuses 19 and 20,
A/C clutch relay, Fuel pump
module relay
106 40A** Anti-lock Brake System (ABS)
107—Not used
108—Not used
109–Not used
110–Not used
111–Not used
112 50A** Ignition switch feed to IP fuses 4,
6, 8, 11, 13, 15, 17, 20, 22 and 28
113 50A** Feeds IP fuses 3, 5, 21, 23, 25, 27
114 30A** VAP Steering, Air suspension
compressor, Instrument cluster
2004 Grand Marquis(grn)
Owners Guide (post-2002-fmt)
USA English(fus)
Roadside Emergencies
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•Do not use fuel, kerosene, or paint thinner to clean any parts.
•Wiper blades can be cleaned with isopropyl (rubbing) alcohol or
windshield washer solution. Be sure to replace wiper blades when they
appear worn or do not function properly.
Do not use sharp objects, such as a razor blade, to clean the
inside of the rear window or to remove decals, as it may cause
damage to the rear window defroster’s heated grid lines.
INSTRUMENT PANEL AND CLUSTER LENS
Clean the instrument panel with a damp cloth, then dry with a dry cloth.
•Avoid cleaners or polish that increase the gloss of the upper portion of
the instrument panel. The dull finish in this area helps protect the
driver from undesirable windshield reflection.
Do not use chemical solvents or strong detergents when cleaning
the steering wheel or instrument panel to avoid contamination of
the air bag system.
•Be certain to wash or wipe your hands clean if you have been in
contact with certain products such as insect repellent and suntan
lotion in order to avoid possible damage to the interior painted
surfaces.
INTERIOR TRIM
•Clean the interior trim areas with a damp cloth, then dry by wiping
with a dry, soft, clean cloth.
•Do not use household or glass cleaners as these may damage the
finish.
INTERIOR
For fabric, carpets, cloth seats, safety belts and seats equipped with side
air bags:
•Remove dust and loose dirt with a vacuum cleaner.
•Remove light stains and soil with Motorcraft Extra Strength
Upholstery Cleaner (ZC-41).
•If grease or tar is present on the material, spot-clean the area first
with Motorcraft Spot and Stain Remover (ZC-14).
•Never saturate the seat covers with cleaning solution.
•Do not use household cleaning products or glass cleaners, which can
stain and discolor the fabric and affect the flame retardant abilities of
the seat materials.
2004 Grand Marquis(grn)
Owners Guide (post-2002-fmt)
USA English(fus)
Cleaning
178

What you should know about fail-safe cooling
If the engine coolant supply is depleted, this feature allows the vehicle to
be driven temporarily before incremental component damage is incurred.
The“fail-safe”distance depends on ambient temperatures, vehicle load
and terrain.
How fail-safe cooling works
•Standard cluster
•Optional cluster
If the engine begins to overheat:
•The engine coolant temperature gauge will move to the H (hot) area
(if your vehicle is equipped with analog gauges).
•The engine coolant temperature gauge will illuminate all eight bars
and a tone will sound every five seconds for one minute (if your
vehicle is equipped with digital gauges).
•TheCheck Engineindicator light will illuminate.
If the engine reaches a preset over-temperature condition, the engine
will automatically switch to alternating cylinder operation. Each disabled
cylinder acts as an air pump and cools the engine.
When this occurs the vehicle will still operate. However:
•The engine power will be limited.
TEMPH
C
N
O
R
M
H
C
2004 Grand Marquis(grn)
Owners Guide (post-2002-fmt)
USA English(fus)
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•Your“Check Engine”indicator may come on. For more information on
the“Check Engine”indicator, refer to theInstrument Cluster
chapter.
Fuel Filter
For fuel filter replacement, see your dealer or a qualified service
technician. Refer to the scheduled maintenance guide for the appropriate
intervals for changing the fuel filter.
Replace the fuel filter with an authorized Motorcraft part. The
customer warranty may be void for any damage to the fuel system
if an authorized Motorcraft fuel filter is not used.
ESSENTIALS OF GOOD FUEL ECONOMY
Measuring techniques
Your best source of information about actual fuel economy is you, the
driver. You must gather information as accurately and consistently as
possible. Fuel expense, frequency of fill-ups or fuel gauge readings are
NOT accurate as a measure of fuel economy. We do not recommend
taking fuel economy measurements during the first 1,600 km (1,000 miles)
of driving (engine break-in period). You will get a more accurate
measurement after 3,000 km–5,000 km (2,000 miles-3,000 miles).
Filling the tank
The advertised fuel capacity of the fuel tank on your vehicle is equal to
the rated refill capacity of the fuel tank as listed in theRefill capacities
section of this chapter.
The advertised capacity is the amount of the indicated capacity and the
empty reserve combined. Indicated capacity is the difference in the
amount of fuel in a full tank and a tank when the fuel gauge indicates
empty. Empty reserve is the small amount of fuel remaining in the fuel
tank after the fuel gauge indicates empty.
The amount of usable fuel in the empty reserve varies and should
not be relied upon to increase driving range. When refueling your
vehicle after the fuel gauge indicates empty, you might not be
able to refuel the full amount of the advertised capacity of the
fuel tank due to the empty reserve still present in the tank.
For consistent results when filling the fuel tank:
•Turn the engine/ignition switch to the off position prior to refueling,
an error in the reading will result if the engine is left running.
2004 Grand Marquis(grn)
Owners Guide (post-2002-fmt)
USA English(fus)
Maintenance and Specifications
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present, theCheck engine/Service engine soonlight should turn off. (A
driving cycle consists of a cold engine startup followed by mixed
city/highway driving.) No additional vehicle service is required.
If theCheck engine/Service engine soonlight remains on, have your
vehicle serviced at the first available opportunity.
Readiness for Inspection/Maintenance (I/M) testing
In some localities, it may be a legal requirement to pass an I/M test of
the on-board diagnostics system. If yourCheck engine/Service engine
soonlight is on, refer to the description in theWarning lights and
chimessection of theInstrument Clusterchapter. Your vehicle may not
pass the I/M test with theCheck engine/Service engine soonlight on.
If the vehicle’s powertrain system or its battery has just been serviced,
the on-board diagnostics system is reset to a“not ready for I/M test”
condition. To ready the on-board diagnostics system for I/M testing, a
minimum of 30 minutes of city and highway driving is necessary as
described below:
•First, at least 10 minutes of driving on an expressway or highway.
•Next, at least 20 minutes driving in stop-and-go, city-type traffic with
at least four idle periods.
Allow the vehicle to sit for at least eight hours without starting the
engine. Then, start the engine and complete the above driving cycle. The
engine must warm up to its normal operating temperature. Once started,
do not turn off the engine until the above driving cycle is complete.
CHECKING AND ADDING POWER STEERING FLUID
Check the power steering fluid.
Refer to the scheduled maintenance
guide for the service interval
schedules.If adding fluid is
necessary, use only MERCON
AT F.
1. Start the engine and let it run until it reaches normal operating
temperature (the engine coolant temperature gauge indicator will be
near the center of the normal area between H and C).
2004 Grand Marquis(grn)
Owners Guide (post-2002-fmt)
USA English(fus)
Maintenance and Specifications
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