fuse Mercury Grand Marquis 2008 s User Guide

Fuse/Relay
LocationFuse Amp
RatingPassenger Compartment Fuse Panel
Description
1 10A Ignition (START) - Starter relay coil,
DTRS
2 7.5A Power mirrors, Door lock switches,
Mirror switch, Keypad switch, Decklid
switch, Adjustable pedal switch, DDM,
Cluster
3 5A Ignition (START) - Audio mute
4 10A LCM (switch illumination), Autolamp
sensor
5 7.5A Ignition (ON/ACC) - LCM
6 7.5A LCM
7 10A Ignition (ON/ACC) - Wiper module
8 10A Electronic Automatic Temperature
Control (EATC) module (vehicles
equipped with EATC only)
9 7.5A Ignition (ON/ACC) - Door lock switch
illumination, Heated seat switch
illumination, Moon roof, Overhead
console, Radio, Antenna,
Electrochromatic mirror, Window relay
coil
10 15A Hazards
11 15A Ignition (ON) - Turn signals
12 15A Audio
13 10A Ignition (ON) - Anti-lock Brake System
(ABS) module, Rear Air Suspension
Module (RASM), Variable Assist Power
Steering (VAPS), Cluster
14 15A Adjustable pedals
15 10A Ignition (ON) - EATC module, A/C mode
switch (vehicles equipped with manual
A/C only), A/C blower relay coil
16 20A Cigar lighter, OBD II
2008 Grand Marquis(grn)
Owners Guide (post-2002-fmt)
USA(fus)
Roadside Emergencies
196

Fuse/Relay
LocationFuse Amp
RatingPassenger Compartment Fuse Panel
Description
17 10A Ignition (ON) - A/C mode switch
(vehicles equipped with manual A/C),
Blend door, Heated seat modules, BTSI
(Floor-shift transmission)
18 15A Lighting control module (interior
lighting)
19 10A LCM (Left-hand low beam)
20 10A Ignition (ON/START) - Back-up lamps
21 10A LCM (Right-hand low beam)
22 10A Ignition (ON/START) - Restraint Control
Module (RCM), Occupant Classification
Sensor (OCS), Passenger Air bag
Deactivation Indicator (PADI)
23 15A Multi-function switch (Flash-to-pass),
LCM (High beams)
24 10A Ignition (ON/START) - Passive
Anti-Theft System (PATS) module,
Powertrain Control Module (PCM) relay
coil, Fuel relay coil, Ignition coil relay
coil
25 15A LCM (Park lamps, corner lamps, license
lamps)
26 10A Ignition (ON/START) - Cluster, LCM,
Overdrive cancel switch
27 — Not used
28 7.5A Brake signal, LCM (BTSI), ABS
29 — Not used
30 — Not used
31 5A Key in (LCM)
32 — Not used
33 — Not used
Relay 1 Full ISO relay Window relay
2008 Grand Marquis(grn)
Owners Guide (post-2002-fmt)
USA(fus)
Roadside Emergencies
197

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.
To reduce risk of electrical shock, 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.
The high-current fuses are coded as follows.
Fuse/Relay
LocationFuse Amp
RatingPower Distribution Box Description
1 30A* Ignition switch
2 20A* Moon roof
2008 Grand Marquis(grn)
Owners Guide (post-2002-fmt)
USA(fus)
Roadside Emergencies
198

Fuse/Relay
LocationFuse Amp
RatingPower Distribution Box Description
3 10A* Powertrain Control Module (PCM) keep
alive power, Canister vent
4 20A* Fuel relay feed
5 10A* Rear Air Suspension Module (RASM),
VAPS
6 15A* Alternator regulator
7 30A* PCM relay feed
8 20A* Driver’s Door Module (DDM)
9 15A* Ignition coil relay feed
10 20A* Horn relay feed
11 15A* A/C clutch relay feed
12 20A* Audio (Subwoofer)
13 20A* Instrument panel power point
14 20A* Stop lamp switch
15 15A* Foglamps
16 20A* Heated seats
17 — Not used
18 — Not used
19 15A* Injectors
20 15A* PCM
21 15A* Powertrain loads and sensors
22 — Not used
23 — Not used
24 10A* Heated mirror, Rear defrost indicator
101 40A** Blower relay feed
102 50A** Cooling fan
103 50A** Instrument panel (I/P) fuse box feed #1
(I/P fuses 10, 12, 14, 16 and 18)
104 50A** Instrument panel (I/P) fuse box feed #2
(I/P fuses 2, 4, 6, 8, 19, 21, 23 and 25)
105 30A** Starter relay feed
2008 Grand Marquis(grn)
Owners Guide (post-2002-fmt)
USA(fus)
Roadside Emergencies
199

Fuse/Relay
LocationFuse Amp
RatingPower Distribution Box Description
106 40A** Anti-lock Brake System (ABS) module
(Pump)
107 40A** Rear defroster relay feed
108 — Not used
109 20A** ABS module (Valves)
110 30A** Wiper module
111 — Not used
112 30A** Air suspension compressor
113 — Not used
114 — Not used
115 — Not used
116 — Not used
117 — Not used
118 — Not used
201
12ISO relay A/C clutch
202 — Not used
203
12ISO relay Ignition coil
204
12ISO relay PCM
205
12ISO relay Foglamps
206
12ISO relay Fuel
207 — Not used
208 — Not used
209
12ISO relay Horn
301 Full ISO relay Starter
302 Full ISO relay Air compressor
303 Full ISO relay Blower
304 Full ISO relay Rear defrost relay
501 Diode A/C clutch
502 Diode PCM
503 — Not used
2008 Grand Marquis(grn)
Owners Guide (post-2002-fmt)
USA(fus)
Roadside Emergencies
200

Fuse/Relay
LocationFuse Amp
RatingPower Distribution Box Description
601 20A Circuit
breakerPower seats, Lumbar
602 20A Circuit
breakerPower windows relay feed (RUN/ACC)
* Mini fuse ** Cartridge fuse
Relays
Relays are located in the power distribution box and should be replaced
by an authorized dealer.
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.
Your vehicle may be equipped with a conventional spare tire that is
different in one or more of the following: type, brand, size, speed rating
and tread design. If this is the case, this dissimilar spare tire is still rated
for your vehicle loads (GAWR and GVWR). This temporary spare tire is
not equipped with a Tire Pressure Monitor System (TPMS) sensor.
Note:The tire pressure monitoring system (TPMS) indicator light will
illuminate when the spare is in use. To restore the full functionality of
the TPMS system, all road wheels equipped with the tire pressure
monitoring sensors must be mounted on the vehicle.
Have a flat tire serviced by an authorized dealer in order to prevent
damage to the TPMS sensor, refer toTire Pressure Monitoring System
(TPMS)in theTires, Wheels, and Loadingchapter. Replace the spare
tire with a road tire as soon as possible. During repairing or replacing of
the flat tire, have the authorized dealer inspect the TPMS sensor for
damage.
The use of tire sealants may damage your Tire Pressure
Monitoring System and should not be used.
2008 Grand Marquis(grn)
Owners Guide (post-2002-fmt)
USA(fus)
Roadside Emergencies
201

Exhaust fumes ..........................176
F
Fail safe cooling ........................244
Flexible Fuel Vehicle (FFV) ....245
Floor mats ...................................82
Fluid capacities .........................263
Foglamps .....................................39
Fuel ............................................245
calculating fuel
economy ......................56, 76, 252
cap ...........................................248
capacity ...................................263
choosing the right fuel ...........249
comparisons with EPA fuel
economy estimates .................255
detergent in fuel .....................250
filling your vehicle
with fuel ..................245, 248, 252
filter, specifications ........245, 262
fuel pump shut-off switch .....193
improving fuel economy ........252
octane rating ...................250, 266
quality ..............................250–251
running out of fuel .................251
safety information relating to
automotive fuels .....................245
Fuel - flex fuel vehicle
(FFV) .........................245, 249–250
Fuses ..................................194–195
G
Gas cap (see Fuel cap) ............248
Gas mileage
(see Fuel economy) .................252
Gauges .........................................15
H
Hazard flashers .........................192Head restraints .........................100
Headlamps ...................................38
aiming ........................................40
autolamp system .......................38
bulb specifications ....................44
daytime running lights .............39
flash to pass ..............................39
high beam .................................39
replacing bulbs .........................45
turning on and off ....................38
Heating
heating and air conditioning
system .................................34–35
Homelink wireless control
system ..........................................70
Hood ..........................................231
I
Ignition ...............................173, 266
Illuminated visor mirror .............51
Infant seats
(see Safety seats) .....................136
Inspection/maintenance (I/M)
testing ........................................257
Instrument panel
cleaning ...................................227
cluster ........................................10
lighting up panel
and interior ...............................40
J
Jump-starting your vehicle ......208
K
Keyless entry system .................92
autolock .....................................85
keypad .......................................92
2008 Grand Marquis(grn)
Owners Guide (post-2002-fmt)
USA(fus)
Index
273

programming entry code .........92
Keys .......................................84, 97
positions of the ignition .........173
L
Lamps
autolamp system .......................38
bulb replacement
specifications chart ..................44
daytime running light ...............39
fog lamps ...................................39
headlamps .................................38
headlamps, flash to pass ..........39
instrument panel, dimming .....40
interior lamps .....................42–45
replacing bulbs .........................45
Lane change indicator
(see Turn signal) ........................42
Lights, warning and indicator ....10
anti-lock brakes (ABS) ..........180
Limited slip axle
(see Traction Loc) ....................185
Load limits .................................163
Locks
autolock .....................................85
childproof ..................................86
doors ..........................................84
Lubricant specifications ...........263
Lug nuts ....................................207
Lumbar support, seats .............104
M
Message center ...........................74
english/metric button ...............78
system check button ................77
warning messages .....................79
Mirrors ...................................63–64automatic dimming rearview
mirror ........................................63
fold away ...................................64
heated ........................................64
side view mirrors (power) .......64
Moon roof ....................................69
Motorcraft parts ........228, 245, 262
O
Octane rating ............................250
Oil (see Engine oil) ..................234
P
Parking brake ............................180
Parts (see Motorcraft parts) ....262
Passenger Occupant
Classification Sensor .................107
Pedals (see Power adjustable
foot pedals) .................................65
Power adjustable foot pedals .....65
Power distribution box
(see Fuses) ...............................198
Power door locks ..................84–85
Power mirrors .............................64
Power point .................................61
Power steering ..................183–184
fluid, checking and adding ....258
fluid, refill capacity ................263
Power Windows ...........................62
R
Radio ..........................18, 20, 23, 28
Rear window defroster ...............37
Relays ................................194, 201
2008 Grand Marquis(grn)
Owners Guide (post-2002-fmt)
USA(fus)
Index
274