2002 Mercury Mountaineer fuse box location

The high-current fuses are coded as follows:
Fuse/Relay
LocationFuse Amp
RatingPower Distribution Box Description
1 60A** PJB
2 30A** BSM
3 20A** GCC pusher fan (export only)
4 30A** Rear defrost
5 40A** Anti-lock Brake System (ABS) pump
6 60A** Delayed accessory circuit breaker
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)/Foglamps (export only)
15 15A* Memory (KAPWR)
16 15A* Headlamp switch
17 20A* 4x4 (v-batt 2)
18 20A* 4x4 (v-batt 1)
Roadside emergencies
212

Fuse/Relay
LocationFuse Amp
RatingPower Distribution Box Description
19 20A** High beam relay
20 30A** Electric brake
21 30A** Front wiper motor
22 20A** Autolamp; Low beam
23 30A** Ignition switch
24 20A* Rear fog lamps (Export only)
25–Not used
26 15A* Fuel pump
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** Power seats, Adjustable pedals
35 20A** Rear power point
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 5A* Brake pressure switch
46 20A* High beams
47—Horn relay
48—Fuel pump relay
49—High beam relay
Roadside emergencies
213

Fuse/Relay
LocationFuse Amp
RatingPower Distribution Box Description
50—Fog lamp relay
51—Police IVD relay
52—A/C clutch relay
53—Trailer tow right turn
54—Trailer tow left turn
55—Blower motor relay
56—Starter relay
57—PTEC relay
58—Ignition relay
59—Driver brake applied or DRL relay (Canada
only)
60—PCM diode
61—A/C clutch diode
62 30A CB Delayed accessory
* Mini Fuses ** Maxi Cartridge Fuses
Rear Relay Box
The relay box is located on the rear passenger side quarter trim panel.
To access this box you must remove the trim panel.
Roadside emergencies
214

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
Relay 20 Trailer tow battery charge
Relay 21 Not used
Relay 22 Approach lamps
Relay 23 Not used
Diode 3 Not used
Diode 4 Not used
Auxiliary relay box
(Canadian vehicles equipped with AdvanceTrac
only)
The relay box is located on the front
right fender well underneath the
speed control module.
Roadside emergencies
215