2010 Mercury Grand Marquis relay

The high-current fuses are coded as follows.
Fuse/Relay
LocationFuse Amp
RatingProtected Circuits
1 30A* Ignition switch
2 20A* Spot lights (Police vehicles only)
3 10A* Powertrain control module (PCM)
– keep alive power, Canister vent
4 20A* Fuel relay feed
5 10A* Rear air suspension module
(RASM)
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
503
502
501
24
23
20
19 22
21302303304
301 207201 202203 204
209
206
208
205602118
114
110
106
102
117
113
109
105
101
116
112
108
104
115
111
107
103
18
16
14
1210
8
6
4
2
17
15
13
119
7
5
3
1 601
Roadside Emergencies
197
2010 Crown Victoria(cro)
Owners Guide, 2nd Printing
USA(fus)

Fuse/Relay
LocationFuse Amp
RatingProtected Circuits
12 20A* Audio (Subwoofer)
25A* Police tray lamps (Police vehicles
only)
13 20A* Instrument panel power point
14 20A* Stop lamp switch
15 15A* Foglamps (Grand Marquis only),
Police accessory battery feed 1
(Police vehicles only)
16 20A* Heated seats (Grand Marquis
only), Police accessory battery
feed 2 (Police vehicles only)
17 10A* Commercial R/A (Crown Victoria
only)
18 10A* Commercial R/A (Crown Victoria
only)
19 15A* Injectors
20 15A* PCM
21 15A* Powertrain loads and sensors
22 20A* Police power distribution box
(PDB) outputs (Police vehicles
only)
23 20A* Police PDB outputs (Police
vehicles only)
24 10A* Heated mirrors, 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
Roadside Emergencies
198
2010 Crown Victoria(cro)
Owners Guide, 2nd Printing
USA(fus)

Fuse/Relay
LocationFuse Amp
RatingProtected Circuits
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
106 40A** Anti-lock brake system (ABS)
module (Pump)
107 40A** Rear defroster relay feed
108 20A** Cigar lighter (Non-police vehicles
only), Police accessory battery
feed 3 (Police vehicles only)
109 20A** ABS module (Valves)
110 30A** Wiper module
111 50A** Police PDB or Police accessory
battery feed (Police vehicles only)
112 30A** Air suspension compressor
(non-Police vehicles only)
40A** Police PDB relay feed (Police
vehicles only)
113 50A** Police light bar or Police
right-hand kick panel accessory
battery feed (Police vehicles only)
114 50A** Police PDB or Police accessory
battery feed (Police vehicles only)
115 50A** Rear power point or Police
right-hand kick panel accessory
battery feed (Police vehicles only)
116 — Not used
117 — Not used
118 50A** Rear power point or Police
right-hand kick panel accessory
battery feed (Police vehicles only)
201
12ISO relay A/C clutch
Roadside Emergencies
199
2010 Crown Victoria(cro)
Owners Guide, 2nd Printing
USA(fus)

Fuse/Relay
LocationFuse Amp
RatingProtected Circuits
202 — Not used
203
12ISO relay Ignition coil
204
12ISO relay PCM
205
12ISO relay Foglamps (Grand Marquis only)
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 (non-Police
vehicles only), RUN/ACC relay
(Police vehicles only)
303 Full ISO relay Blower
304 Full ISO relay Rear defrost relay
501 — Not used
502 Diode PCM
503 — Not used
601 20A Circuit
breakerPower seats, Lumbar, Decklid
(Police vehicles only)
602 20A Circuit
breakerRUN/ACC relay feed – Windows,
Decklid (Police vehicles only)
* 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.
Roadside Emergencies
200
2010 Crown Victoria(cro)
Owners Guide, 2nd Printing
USA(fus)

Power distribution connector
(police and fleet vehicles) .......272
Power door locks ........................76
Power mirrors .............................70
Power point .................................67
Rear (police) ...........................273
Power steering ..........................183
fluid, checking and adding ....257
fluid, refill capacity ................263
Power Windows ...........................68
R
Radio ..........................27, 29, 32, 37
Rear window defroster ...............46
Recommendations for
attaching safety restraints for
children ......................................126
Relays ................................192, 200
Remote entry system .................80
illuminated entry ......................83
locking/unlocking doors ...........81
opening the trunk .....................81
panic alarm ...............................81
replacement/additional
transmitters ...............................82
replacing the batteries .............82
Roadside assistance ..................189
S
Safety belts (see Safety
restraints) ....................97, 101–106
Safety Canopy ...........................121
Safety defects, reporting ..........221
Safety restraints ..........97, 101–106
Belt-Minder
...........................107
extension assembly ................105for adults .........................102–105
for children .............................124
lap belt ....................................103
Occupant Classification
Sensor ........................................99
warning light and chime ........106
Safety restraints - LATCH
anchors ......................................133
Safety seats for children ..........128
Safety Compliance
Certification Label ....................267
Seat belt extenders (police) ....280
Seats ............................................91
child safety seats ....................128
front seats .................................92
heated ........................................96
Heavy duty (police) ...............280
SecuriLock passive anti-theft
system ....................................86, 89
Servicing your vehicle ..............229
Setting the clock
AM/FM single CD .....................31
AM/FM stereo ...........................28
AM/FM/In-dash 6 CD ................40
AM/FM/Tape/CD .......................35
Spark plugs, specifications ......262,
266
Specification chart,
lubricants ...................................263
Speed control ..............................71
Speedometer
calibrated (police) ..................281
Starting a flex fuel vehicle .......175
Starting your vehicle ........173–175
jump starting ..........................208
Steering wheel
controls ......................................74
Index
307
2010 Crown Victoria(cro)
Owners Guide, 2nd Printing
USA(fus)