fuse box location Mercury Mountaineer 2003 Owner's Manuals

Passenger compartment fuse panel (top side)
These relays are located on the reverse side of the passenger
compartment fuse panel. See your dealer or a certified technician for
service of this relay box.
Fuse/Relay Location Description
Relay 1 Flasher relay
Relay 2 Rear defrost
Relay 3 Delayed accessory relay
Relay 4 Open
Relay 5 Battery saver
Relay 6 Open
Relay 7 Open
Roadside Emergencies
170

The high-current fuses are coded as follows:
Fuse/Relay
LocationFuse Amp
RatingPower Distribution Box
Description
1 60A** PJB
2 30A** BSM
3—Not used
4 30A** Rear defrost
5 40A** Anti-lock Brake System (ABS)
pump
6 60A** Delayed accessory
7 20A** Power point #2
8—Not used
9 20A** Power point #1
10 30A** ABS module (valves)
11 40A** PTEC
12 50A** Ignition relay, Starter relay
13 40A** Trailer tow battery, Trailer tow
turn signals
14 10A* Daytime Running Lamps (DRL)
(Canada)
15 15A* Memory (PCM/DEATC/Cluster),
Interior lights
16 15A* Headlamp switch, Foglamp switch
17—Not used
18—Not used
19 20A** High beam relay
20 30A** Electric brake
21 30A** Front wiper motor
22 20A** Low beam
23 30A** Ignition switch
24—Not used
25—Not used
26 15A* Fuel pump
Roadside Emergencies
172

Fuse/Relay
LocationFuse Amp
RatingPower Distribution Box
Description
27 20A* Trailer tow lamps
28 20A* Horn relay
29 60A** PJB
30 20A** Rear wiper motor
31—Not used
32—Not used
33 30A** Auxiliary blower motor
34 30A** Passenger power seat, Adjustable
pedals
35—Not used
36 40A** Blower motor
37 15A* A/C clutch relay, Transmission
38 15A* Coil on plug
39 15A* Injectors, Fuel pump relay
40 15A* PTEC power
41 15A* HEGO, VMV, CMS, PTEC
42 10A* Right low beam
43 10A* Left low beam
44 15A* Front foglamps
45 2A* Brake pressure switch (ABS)
46 20A* High beams
47—Horn relay
48—Fuel pump relay
49—High beam relay
50—Fog lamp relay
51—DRL relay (Canada)
52—A/C clutch relay
53—Trailer tow right turn relay
54—Trailer tow left turn relay
55—Blower motor relay
56—Starter relay
Roadside Emergencies
173

Fuse/Relay
LocationFuse Amp
RatingPower Distribution Box
Description
57—PTEC relay
58—Ignition relay
59—Not used
60—PCM diode
61—A/C clutch diode
62 30A CB Power windows circuit breaker
* Mini Fuses ** Maxi Cartridge Fuses
Rear relay box
The relay box is located on the rear passenger side quarter trim panel.
See your dealer or a certified technician for service of this relay box.
The relays are coded as follows:
Fuse/Relay Location Description
Relay 14 Not used
Relay 15 Trailer tow back-up lamps
Relay 16 Not used
Relay 17 Not used
Relay 18 Not used
Relay 19 Trailer tow park lamps
Roadside Emergencies
174

Fuse/Relay Location Description
Relay 20 Trailer tow battery charge
Relay 21 Not used
Relay 22 Not used
Relay 23 Not used
Diode 3 Not used
Diode 4 Not used
Auxiliary relay box
The relay box is located on the front
right fender well underneath the
speed control module.
The relays are coded as follows:
Fuse/Relay Location Description
Relay 64 Open
Relay 65 Open
Relay 66 Open
Roadside Emergencies
175