2004 Mercury Grand Marquis horn

Unlocking the doors
Press this control to unlock the
driver’s door. The interior lamps will
illuminate.
Press the control a second time
within five seconds to unlock all
doors.
Locking the doors
Press this control to lock all doors.
The horn will chirp and the
parklamps/taillamps will flash to
confirm the control was pressed.
Deactivating/activating the horn chirp and flash confirmation
feature
The horn chirp and flash confirmation feature can be turned on/off
through the following procedure using the power door locks:
You must complete steps 1-7 within 30 seconds or the procedure will
have to be repeated. If the procedure needs to be repeated, you must
wait 30 seconds.
1. Turn the ignition key to ON.
2. Press the power door unlock control on the door panel three times.
3. Turn the ignition key from ON to OFF.
4. Press the power door unlock control three times.
5. Turn the ignition back to ON. The door locks will cycle lock/unlock.
6. With the ignition still in the ON position, press the unlock control
twice.
2004 Grand Marquis(grn)
Owners Guide (post-2002-fmt)
USA English(fus)
Locks and Security
75

The high-current fuses are coded as follows.
Fuse/Relay
LocationFuse Amp
RatingPower Distribution Box
Description
1 25A* Audio
2 20A* Power point
3 25A* Heated seats
4 15A* Horns
5 20A* Fuel pump module
6 15A* Alternator
7 25A* Moonroof
8 20A* Driver’s Door Module (DDM)
9–Not used
10—Not used
11 20A* Daytime running lamps
12—Not used
13—Not used
14—Not used
15—Not used
503
502
501
24
23401
20
19 22
21RELAY
302 RELAY
304 RELAY
303
RELAY
301 207
201 202 203204
209
206
208
205602
601118
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
2004 Grand Marquis(grn)
Owners Guide (post-2002-fmt)
USA English(fus)
Roadside Emergencies
151

Fuse/Relay
LocationFuse Amp
RatingPower Distribution Box
Description
115 50A** Ignition switch feed to IP fuses 16
and 18
116 30A** Wipers
117–Not used
118 20A** ABS
201 1/2 ISO Horn relay
202 1/2 ISO PCM relay
203 1/2 ISO Fuel pump relay
204 1/2 ISO A/C clutch relay
205 1/2 ISO Traction control switch relay
206—Not used
207—Not used
208 1/2 ISO Moonroof relay
209—Not used
301 Full ISO Blower motor relay
302 Full ISO Starter solenoid relay
303 Full ISO Air suspension relay
304 Full ISO Heated backlight relay
401—Not used
501 Diode PCM
502 Diode A/C clutch
503—Not used
601—Not used
602 20A** Adjustable pedals, Power seat,
Locks, Decklid, Lumbar
* Mini fuse ** Circuit breaker/Maxi fuse
Relays
Relays are located in the power distribution box and should be replaced
by qualified technicians.
CHANGING THE TIRES
If you get a flat tire while driving, do not apply the brake heavily.
Instead, gradually decrease your speed. Hold the steering wheel firmly
and slowly move to a safe place on the side of the road.
2004 Grand Marquis(grn)
Owners Guide (post-2002-fmt)
USA English(fus)
Roadside Emergencies
153