2005 Mercury Grand Marquis horn

The remote entry system allows you to lock or unlock all vehicle doors
without a key.
The remote entry features operate
with the ignition in any position,
except in the 3 (ON) , with the
transmission not in either P (Park)
or N (Neutral).
If there are problems with the
remote entry system, make sure to
takeALL remote entry
transmitterswith you to the
dealership in order to aid in
troubleshooting the problem.
Unlocking the doors
1. Pressand release to unlock the driver’s door.Note:The interior
lamps will illuminate.
2. Press
and release again within five seconds to unlock all the doors.
Locking the doors
Pressonce to lock all the doors. The doors will lock upon first press.
Press
again within three seconds to receive confirmation that the
vehicle was successfully locked.Note:If all vehicle doors are closed
upon the second press of the
, the horn will chirp once and the
parklamps/taillamps will flash once to confirm the successful locking.
Upon the second press of the
, if any door is not securely closed the
horn will chirp twice and the park/taillamps will flash twice to warn that
successfully locking was not complete.
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:
Complete Steps 1-7 within 30 seconds or you must repeat the procedure.
Wait 30 seconds before repeating the procedure.
1. Turn the ignition to the 4 (ON) position.
2. Press the power door unlock control on the door panel three times.
2005 Grand Marquis(grn)
Owners Guide (post-2002-fmt)
USA(fus)
Locks and Security
81

Fuse/Relay
LocationFuse Amp
RatingPower Distribution Box
Description
10 20A* Horn relay feed
11 15A* A/C clutch relay feed
12 25A* Audio
13 20A* Instrument panel power point
14 20A* Stop lamp switch
15 20A* Heated seats
16 20A* Daytime Running Lamps (DRL)
module
17 — Not used
18 — Not used
19 15A* Injectors
20 15A* PCM, Mass Air Flow (MAF)
sensor
21 15A* Powertrain loads and sensors
22 — Not used
23 — Not used
24 5A* Radio mute
101 40A** Blower relay feed
102 50A** Cooling fan
103 50A** Instrument panel (I/P) fuse box
feed #1 (I/P fuses 23, 25, 27 and
31)
104 40A** Instrument panel (I/P) fuse box
feed #2 (I/P fuses 1, 3, 5, 7 and 9)
105 30A** Starter relay feed
106 40A** Anti-lock Brake System (ABS)
module (Pump)
107 40A** Rear defroster relay feed
108 20A** Moonroof
109 20A** ABS module (Valves)
110 30A** Wiper module
111 — Not used
2005 Grand Marquis(grn)
Owners Guide (post-2002-fmt)
USA(fus)
Roadside Emergencies
188

Fuse/Relay
LocationFuse Amp
RatingPower Distribution Box
Description
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 — Not used
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 Power windows relay (RUN/ACC)
501 Diode A/C clutch
502 Diode PCM
503 Diode Horn, Door latch
601 20A Circuit
breakerPower seats, Lumbar, Decklid
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 qualified technicians.
2005 Grand Marquis(grn)
Owners Guide (post-2002-fmt)
USA(fus)
Roadside Emergencies
189