Mercury Mountaineer (2002 -2005) – fuse box diagram

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Mercury Mountaineer (2002 -2005) – fuse box diagram

Year of production: 2002, 2003, 2004, 2005

Passenger compartment fuse panel

Mercury Mountaineer Second Generation - fuse box - passenger compartment
Mercury Mountaineer Second Generation – fuse box – passenger compartment

The fuse panel is located below the instrument panel on the driver’s side.

No. A Circuits Protected
1 30 Memory seat module, Driver power seat (’03-’05), Driver power lumbar (’05)
2 20 Heated seats (’02), Moonroof
3 20 Radio, Amplifier, Power antenna (’02), DVD
4 5 Front wiper module
5 15 Flasher relay (Turn, hazards)
6 10 Right horn (’02), Key-in-chime (’03-’05)
7 15 Heated mirrors
8 5 ’04-’05: Heated PCV (4.0L engine only)
9 — Not used (spare)
10 10 Heated backlight relay coil, Heated seat module (’02), Temp blend actuator (’02), A/C clutch contact
11 20 ’03-’05: Heated seats
12 5 ’02: Foglamp switch, 4×4 module
13 5 Overdrive cancel switch, Flex fuel sender (’02-’03)
14 5 PATS module
15 5 Rear wiper module, Cluster, TPMS (’02-’03)
16 5 Power mirror, Manual climate control, TPMS
17 15 Delayed acc. coil, Battery saver, Interior lamps (front and rear), Glove compartment lamp
18 10 Left horn (’02-’03), Flexible fuel pump (’04-’05)
19 10 RCM, PAD indicator (’02)
20 5 Memory driver seat switch, Driver seat module, Body Security Module (BSM), PATS LED, Sunload sensor (’02-’03)
21 5 Instrument cluster, Compass, Flasher coil
22 10 ABS, IVD Controller
23 15 ’02-’03: Brake pedal position switch, Driver brake applied relay, Redundant cruise deactivate switch
24 15 Cigar lighter, OBD II
25 5 Mode-Temperature actuator for auxiliary climate control, Trailer tow battery charge coil, TPMS (’04-’05)
26 7.5 Reverse park aid, Brake shift interlock, Approach lamp relay coil (’02), IVD switch
27 7.5 Automatic dimming mirror, Digital transmission range sensor, Backup lamps
28 5 Radio (Start)/DVD (Start)
29 10 Digital transmission range sensor, PWR feed to fuse #28 (Start feed)
30 5 Daytime Running Lamps (DRL), Remote solenoid, DEATC climate controller, Manual climate control, Manual climate control temp blend actuator

 

Passenger compartment fuse panel (top side)

Mercury Mountaineer Second Generation – fuse box – passenger compartment (top side)

These relays are located on the reverse side of the passenger compartment fuse panel. To access the relays you must remove the passenger compartment fuse panel.

No. Circuits Protected
1 Flasher
2 Rear defrost
3 Delayed accessory
4 Open
5 Battery saver
6 Open
7 Open

Engine Compartment Fuse Box

Mercury Mountaineer Second Generation – fuse box – power distribution box

The power distribution box is located in the engine compartment. The power distribution box contains high-current fuses that protect your vehicle’s main electrical systems from overload.

No. A Circuits Protected
1 60 PJB
2 30 BSM
3 — Not used
4 30 Rear defrost
5 40 Anti-lock Brake System (ABS) pump
6 60 Delayed accessory, Power windows (’04-’05), Audio (’04-’05)
7 20 Power point #2
8 — Not used
9 20 Power point #1
10 30 ABS module (valves)
11 40 PTEC (’02-’03), Powertrain Control Module (PCM) (’04-’05)
12 50 Ignition relay/Starter relay
13 40 Trailer tow battery. Trailer tow turn signals
14 10 ’02-’03: Daytime Running Lamps (DRL) (Canada)
15 15 Memory (KAPWR) (’02), Memory (PCM/DEATC/Cluster) (’03-’05), Courtesy lamps (’03-’05)
16 15 Headlamp switch (’02-’03), Foglamp switch (’03), Park lamps (’04-’05), Autolamp parklamps (’04-’05), Front foglamps relay coil (’04-’05)
17 — Not used
18 20 4×4 (v-batt 1) (’02-’03), PCM with two-speed 4×4 clutch (’04-’05)
19 20 High beam relay
20 30 Trailer electric brake module
21 30 Front wiper motor
22 20 Autolamp; Low beam
23 30 Ignition switch, PCM diode (’04-’05)
24 — Not used
25 15 ’04-’05: Brake on-off
26 15 ’02-’03: Fuel pump
20 ’04-’05: Fuel pump
27 20 Trailer tow lamps, Trailer tow back-up
28 20 Horn relay
29 60 PJB
30 20 Rear wiper motor
31 — Not used
32 — Not used
33 30 Auxiliary blower motor
34 30 Power seats, Adjustable pedals
35 20 Rear power point (’02)
36 40 Blower motor
37 15 A/C clutch relay/Transmission
38 15 Coil on plug (’02-’03), HEGO (’04-’05), VMV (’04-’05), CMS (’04-’05), ESM (’04-’05), CVS (’04-’05)
39 15 Injectors/Fuel pump relay
40 15 PTEC power (’02-’03), PCM power (’04-’05)
41 15 HEGO (’02-’03), VMV (’02-’03), CMS (’02-’03), PTEC (’02-’03), Coil on plug (’04-’05; 4.6L engine only), Ignition coil (’04-’05; 4.0L engine only)
42 10 Right low beam
43 10 Left low beam
44 15 Front foglamps
45 5 Brake pressure switch (’02)
2 Brake pressure switch (ABS) (’03-’05)
46 20 High beams
62 30 Circuit Breaker: Delayed accessory (’02), Power windows (’03-’05)
Relay
47 Horn
48 Fuel pump
49 High beam
50 Fog lamp
51 ’02-’03: Daytime Running Lamps
52 A/C clutch
53 Trailer tow right turn
54 Trailer tow left turn
55 Blower motor
56 Starter
57 ’02-’03: PTEC
’04-’05: PCM
58 Ignition
59 ’02-’03: Driver brake applied or Daytime Running Lamps
Diode
60 PCM
61 A/C clutch

Rear Relay Box

Mercury Mountaineer Second Generation – fuse box – 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.

No. Circuits Protected
14 Not used
15 Trailer tow back-up lamps
16 Not used
17 Not used
18 Not used
19 Trailer tow park lamps
20 Trailer tow battery charge
21 Not used
22 ’02: Approach lamps
23 Not used
Diode
3 Not used
4 Not used

Auxiliary relay box (trailer tow)

Mercury Mountaineer Second Generation – fuse box – auxiliary relay box

The relay box is located on the front right fender well underneath the speed control module.

Relay Description
Relay 64 Trailer Tow (left turn)
Relay 65 Trailer Tow (right turn)
Relay 66 Not used

WARNING: Terminal and harness assignments for individual connectors will vary depending on vehicle equipment level, model, and market