Mercury Mountaineer 1997-2001 uses a passenger-compartment fuse panel and an engine-compartment Power Distribution Box. The under-hood layout changed for 1998, so 1997 and 1998-2001 are shown separately.
For the next generation, see Mercury Mountaineer 2002-2005.
Passenger-compartment fuse panel
| Position | Rating [A] | Protected component / function |
|---|---|---|
| 1 | 7.5 | Power-mirror switch, power antenna, memory-seat switch – 2000-2001 |
| 2 | 7.5 | 1998-2001: blower-motor relay, airbag diagnostic monitor, Passenger Airbag Deactivation module – 1998 |
| 7.5 | 1997: center high-mounted stop lamp | |
| 3 | 7.5 | 1998-2001: left trailer-tow stop/turn circuit |
| 15 | 1997: parking lamps | |
| 4 | 10 | Left headlamp |
| 5 | 10 | Data Link Connector |
| 6 | 7.5 | 1999-2001: rear blower motor without EATC |
| 7.5 | 1997-1998: airbag system, blower relay, Passenger Airbag Deactivation module – 1998 | |
| 7 | 7.5 | 1998-2001: right trailer-tow stop/turn circuit |
| 7.5 | 1997: illumination switches | |
| 8 | 10 | Right headlamp, low-beam relay module, Daytime Running Lamps module – 1998 |
| 9 | 7.5 | 1998-2001: Brake Pedal Position switch |
| 10 | 1997: autolamps | |
| 10 | 7.5 | 1998-2001: speed-control amplifier, Generic Electronic Module, shift actuator, blend-door actuator, A/C-heater assembly, flasher, overhead console – 1999-2001, load-leveling module – 1999-2001, brake-pressure switch – 1998, main light switch – 1998, RABS resistor – 1998 |
| 7.5 | 1997: rear blower, speed control, Generic Electronic Module, brake-shift interlock, overhead console | |
| 11 | 7.5 | Instrument cluster, main light switch – 1998, RABS resistor – 1998 |
| 12 | 7.5 | 1998-2001: front and rear washer-pump relays |
| 10 | 1997: front wiper / washer | |
| 13 | 20 | 1998-2001: Brake Pedal Position switch, brake-pressure switch |
| 15 | 1997: brake on/off switch | |
| 14 | 10 | 1998-2001: Four-Wheel Anti-Lock Brake System module and main relay |
| 10 | 1997: Anti-lock Brake System | |
| 20 | 1998: Rear Anti-lock Brake System module | |
| 15 | 7.5 | Instrument cluster, airbag system – 1997 |
| 16 | 30 | Front wiper motor – 1998-2001, wiper high/low relay – 1998-2001, run/park relay |
| 17 | 25 | 1998-2001: cigarette lighter |
| 15 | 1997: cigarette lighter | |
| 18 | 25 | 1999-2001: driver unlock relay, all-unlock relay, all-lock relay, power seats |
| 15 | 1997: air-conditioning system | |
| 15 | 1998: driver unlock relay, all-unlock relay, all-lock relay | |
| 19 | 25 | 1998-2001: PCM power diode |
| 25 | 1997: ignition coil, PCM system | |
| 20 | 7.5 | Remote Anti-Theft Personality module – 1998-2001, Generic Electronic Module, radio, cellular phone – 1999-2001, power antenna – 1997, anti-theft – 1997 |
| 21 | 15 | Hazard lamps |
| 22 | 20 | Auxiliary power point |
| 10 | Turn signals | |
| 23 | – | 1999-2001: not used |
| 10 | 1997: rear-wiper system | |
| 15 | 1998: turn signals | |
| 24 | 7.5 | 1999-2001: Clutch Pedal Position switch, starter-interrupt relay, anti-theft |
| 10 | 1997: anti-theft relay | |
| – | 1998: not used | |
| 25 | 7.5 | Generic Electronic Module, instrument cluster, SecuriLock – 1999-2001 |
| 26 | 10 | 1998-2001: battery-saver relay, electronic shift relay, interior-lamp relay, electronic shift-control module, master-window relay – 1998, shift-control module – 1998, transmission control – 1998 |
| 10 | 1997: 4R70W transmission, Daytime Running Lamps, reversing lamps, rear-defrost relay | |
| 27 | 15 | 1999-2001: Daytime Running Lamps, reversing-lamp switch, Digital Transmission Range sensor |
| 10 | 1997: under-hood lamp, map lamp, glove-box lamp, dome lamp, visor lamps, delayed accessories, dimmer-switch illumination | |
| 15 | 1998: multifunction switch, Daytime Running Lamps, reversing-lamp switch, Digital Transmission Range sensor, instrument-illumination dimmer module, dome/map lamp, Generic Electronic Module, power controls, interior lighting, glove-box lamp and switch | |
| 28 | 7.5 | Generic Electronic Module, radio – 1998-2001, memory seat – 1999-2001 |
| 29 | 25 | 2000-2001: radio |
| 10 | 1997: audio system | |
| 15 | 1998: radio | |
| 10 | 1999: radio | |
| 30 | 15 | 1998-2001: parking lamps / trailer-tow relay |
| – | 1997: not used | |
| 31 | – | 1998-2001: not used |
| 7.5 | 1997: rear-blower-motor relay | |
| 32 | 10 | 1999-2001: heated mirrors |
| 7.5 | 1997: heated rear window | |
| 10 | 1998: rear blower | |
| 33 | 15 | Headlamps, Daytime Running Lamps module, instrument cluster |
| 34 | 7.5 | 1998-2001: rear integrated control panel, CD |
| 7.5 | 1997: premium audio system | |
| 35 | 7.5 | 1999-2001: rear blower motor with EATC |
| – | 1997: not used | |
| 10 | 1998: RABS test connector | |
| 36 | 7.5 | 1998-2001: EATC memory – 1999-2001, CD, rear integrated control panel, memory seat, message center |
| – | 1997: not used |
Engine-compartment fuse box – 1997
| Position | Rating [A] | Protected component / function |
|---|---|---|
| Maxi fuses | ||
| 1 | 30 | Heated rear window |
| 2 | 30 | PCM power relay |
| 3 | 20 | Fuel system, anti-theft system |
| 4 | 20 | Headlamps |
| 5 | 30 | ABS |
| 6 | 30 | ABS |
| 7 | 20 | Trailer-tow parking and stop-lamp circuits |
| 8 | 30 | Battery-saver relay and headlamp relay |
| 9 | 50 | Blower motor |
| 10 | 30 | Power locks, power windows and power accessories |
| 11 | 20 | PCM memory |
| 12 | 50 | Air-ride control relay |
| 13 | 60 | Instrument-panel fuse panel |
| 14 | 60 | Ignition |
| Mini fuses | ||
| 1 | 30 | JBL audio system |
| 2 | 15 | Rear-wiper system |
| 3 | 30 | Power point |
| 4 | 20 | 4WD system |
| 5 | 15 | Air-suspension system |
| 6 | 15 | Alternator circuit |
| 7 | 10 | Airbag system |
| 8 | 15 | Fog / driving lamps |
| 9 | – | Not used |
| 10 | – | Not used |
| 11 | 20 | Heated oxygen sensor system |
| Relay | ||
| 1 | Relay | Wiper run relay |
| 2 | Relay | Horn relay |
| 3 | Relay | Wiper relay |
| 4 | Relay | A/C wide-open-throttle relay |
| 5 | Relay | PCM power relay |
| 6 | Relay | Fuel-pump relay |
| Diode | ||
| 1 | Diode | ABS diode |
| 2 | Diode | PCM diode |
Engine-compartment fuse box – 1998-2001
| Position | Rating [A] | Protected component / function |
|---|---|---|
| Maxi fuses | ||
| 1 | 60 | 1999-2001: I/P fuse panel – fuses 1, 9 and 13 |
| 50 | 1998: I/P fuse panel | |
| 2 | 40 | Blower-motor relay |
| 3 | 50 | Four-Wheel Anti-Lock Brake System module |
| 4 | 30 | 1999-2001: power moonroof, delayed-accessory relay – 2001, power windows – 1999-2000, power seat – 1999-2000 |
| 20 | 1998: main light switch, instrument cluster | |
| 5 | 50 | Ignition switch, starter |
| 6 | 20 | Transfer-case relay |
| 7 | – | Not used |
| 8 | 20 | Air suspension – ride-control on/off switch |
| 9 | 40 | Air suspension – automatic ride control |
| 10 | 30 | PCM power relay |
| Mini fuses | ||
| 1 | 10 | A/C relay |
| 2 | 30 | 1999-2001: heated seats |
| 20 | 1998: auxiliary power point | |
| 3 | 30 | 1999-2001: heated backlight / heated circuit |
| – | 1998: not used | |
| 4 | 15 | Fog lamps and Daytime Running Lamps |
| 5 | – | 1999-2001: not used |
| 10 | 1998: airbag diagnostic monitor | |
| 6 | 10 | Powertrain Control Module |
| 7 | 30 | Four-Wheel Anti-Lock Brake System module |
| 8 | 15 | 1999-2001: rear-wiper motor |
| 30 | 1998: PCM relay | |
| 9 | 20 | Fuel-pump relay and Remote Anti-Theft Personality module |
| 10 | 15 | Horn relay |
| 11 | 15 | Parking-lamp relay and main light switch |
| 12 | 30 | Main light switch and multifunction switch |
| 13 | 15 | Heated oxygen sensor, EGR vacuum regulator, EVR solenoid, camshaft-position sensor, canister-vent solenoid, A4LD automatic transmission – 1998 |
| 14 | 30 | Generator / voltage regulator |
| 15 | – | Not used |
| Relay | ||
| 1 | Relay | Wiper |
| 2 | Relay | A/C |
| 3 | Relay | Wiper high/low |
| 4 | Relay | PCM power |
| 5 | Relay | Fuel pump |
| 6 | Relay | Starter |
| 7 | Relay | Horn |
| 8 | Relay | 1999-2001: rear wiper |
| Relay | 1998: washer pump | |
| 9 | Relay | Blower motor |
| 10 | Relay | 1999-2001: rear-wiper up |
| Relay | 1998: fog lamp | |
| Diode / resistor | ||
| 1 | Component | 1999-2001: not used |
| Component | 1998: resistor – fuse 7 | |
| 1 | Diode | 2000-2001: Daytime Running Lamps LED diode |
| Diode | 1998: brake-shift-interlock indicator diode | |
| Diode | 1999: not used | |
| 2 | Diode | Electronic engine-control diode |
Commonly checked circuits
- Cigarette lighter: cabin position 17 – 15 A in 1997, 25 A in 1998-2001.
- OBD / DLC: cabin position 5 – 10 A.
- Fuel pump: engine relay 6 in 1997; engine relay 5 and mini-fuse 9 – 20 A in 1998-2001.
- ABS: several high-current fuses are used; match the under-hood table to the model year.
FAQ – Mercury Mountaineer 1997-2001 fuses
Why are there two under-hood diagrams?
The Power Distribution Box changed for 1998, so the 1997 and 1998-2001 layouts are not interchangeable.