Mercury Mountaineer (2002 -2005) – fuse box diagram

Year that production: 2002, 2003, 2004, 2005

Passenger compartment fuse panel

Mercury Mountaineer second Generation – fuse box – passenger compartment

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

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No.ACircuits Protected
130Memory seat module, Driver power seat (’03-’05), Driver strength lumbar (’05)
220Heated seats (’02), Moonroof
320Radio, Amplifier, power antenna (’02), DVD
45Front wiper module
515Flasher relay (Turn, hazards)
610Right horn (’02), Key-in-chime (’03-’05)
715Heated mirrors
85’04-’05: Heated PCV (4.0L engine only)
9Not provided (spare)
1010Heated backlight relay coil, Heated chair module (’02), Temp mix actuator (’02), A/C clutch contact
1120’03-’05: Heated seats
125’02: Foglamp switch, 4×4 module
135Overdrive release switch, Flex fuel sender (’02-’03)
145PATS module
155Rear wiper module, Cluster, TPMS (’02-’03)
165Power mirror, hand-operated climate control, TPMS
1715Delayed acc. Coil, Battery saver, inner lamps (front and also rear), glove compartment lamp
1810Left horn (’02-’03), functional fuel pump (’04-’05)
1910RCM, PAD indicator (’02)
205Memory driver chair switch, Driver chair module, Body security Module (BSM), PATS LED, Sunload sensor (’02-’03)
215Instrument cluster, Compass, Flasher coil
2210ABS, IVD Controller
2315’02-’03: Brake pedal place switch, Driver brake used relay, redundant cruise deactivate switch
2415Cigar lighter, OBD II
255Mode-Temperature actuator for assistant climate control, Trailer tow battery charge coil, TPMS (’04-’05)
267.5Reverse park aid, Brake transition interlock, approach lamp relay coil (’02), IVD switch
277.5Automatic dimming mirror, Digital transmission range sensor, back-up lamps
285Radio (Start)/DVD (Start)
2910Digital transmission range sensor, PWR feeding to fuse #28 (Start feed)
305Daytime to run 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 situated on the reverse side that the passenger compartment fuse panel. To accessibility the relays you should remove the passenger compartment fuse panel.

No.Circuits Protected
2Rear defrost
3Delayed accessory
5Battery saver

Engine Compartment Fuse Box

Mercury Mountaineer second Generation – fuse box – power distribution box

The power circulation box is located in the engine compartment. The power circulation box contains high-current fuses that defend your vehicle’s main electric systems native overload.

No.ACircuits Protected
3Not used
430Rear defrost
540Anti-lock Brake system (ABS) pump
660Delayed accessory, Power windows (’04-’05), Audio (’04-’05)
720Power allude #2
8Not used
920Power point #1
1030ABS module (valves)
1140PTEC (’02-’03), Powertrain regulate Module (PCM) (’04-’05)
1250Ignition relay/Starter relay
1340Trailer tow battery. Trailer tow turn signals
1410’02-’03: Daytime running Lamps (DRL) (Canada)
1515Memory (KAPWR) (’02), storage (PCM/DEATC/Cluster) (’03-’05), Courtesy lamps (’03-’05)
1615Headlamp move (’02-’03), Foglamp switch (’03), Park lamps (’04-’05), Autolamp parklamps (’04-’05), front foglamps relay coil (’04-’05)
17Not used
18204×4 (v-batt 1) (’02-’03), PCM with two-speed 4×4 clutch (’04-’05)
1920High beam relay
2030Trailer electrical brake module
2130Front wiper motor
2220Autolamp; short beam
2330Ignition switch, PCM diode (’04-’05)
24Not used
2515’04-’05: Brake on-off
2615’02-’03: Fuel pump
20’04-’05: Fuel pump
2720Trailer tow lamps, Trailer tow back-up
2820Horn relay
3020Rear wiper motor
31Not used
32Not used
3330Auxiliary blower motor
3430Power seats, flexible pedals
3520Rear power point (’02)
3640Blower motor
3715A/C clutch relay/Transmission
3815Coil top top plug (’02-’03), HEGO (’04-’05), VMV (’04-’05), CMS (’04-’05), ESM (’04-’05), CVS (’04-’05)
3915Injectors/Fuel pump relay
4015PTEC strength (’02-’03), PCM strength (’04-’05)
4115HEGO (’02-’03), VMV (’02-’03), CMS (’02-’03), PTEC (’02-’03), Coil top top plug (’04-’05; 4.6L engine only), Ignition coil (’04-’05; 4.0L engine only)
4210Right short beam
4310Left low beam
4415Front foglamps
455Brake press switch (’02)
2Brake push switch (ABS) (’03-’05)
4620High beams
6230Circuit Breaker: Delayed accessory (’02), Power windows (’03-’05)
48Fuel pump
49High beam
50Fog lamp
51’02-’03: Daytime running Lamps
52A/C clutch
53Trailer tow ideal turn
54Trailer tow left turn
55Blower motor
57’02-’03: PTEC’04-’05: PCM
59’02-’03: Driver brake applied or Daytime running Lamps
61A/C clutch

Rear Relay Box

Mercury Mountaineer second Generation – fuse crate – behind relay box

The relay box is located on the rear passenger side 4 minutes 1 trim panel. To access this crate you have to remove the trim panel.


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Circuits Protected
14Not used
15Trailer tow back-up lamps
16Not used
17Not used
18Not used
19Trailer tow park lamps
20Trailer tow battery charge
21Not used
22’02: Approach lamps
23Not used
3Not used
4Not used

Auxiliary relay box (trailer tow)

Mercury Mountaineer second Generation – fuse box – assistant relay box

The relay box is located on the front ideal fender fine underneath the speed manage module.

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

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