The first-generation Mercury Mariner was produced between 2004 and 2007. This guide provides detailed fuse box diagrams for the 2005, 2006, and 2007 models. It includes information on the location of the fuse panels within the vehicle and explains the function and assignment of each fuse and relay. Whether you’re troubleshooting electrical issues or performing routine maintenance, this resource will help you understand the fuse layout and ensure your Mariner runs smoothly.
Table of Contents
Cigar lighter (power outlet) fuses in the Mercury Mariner are the fuse #24 (Cigar lighter) in the Passenger Compartment fuse box, and fuse #12 (Power point) in the Engine Compartment Fuse Box.
Engine Compartment
| Fuse Number | Protected components | Fuse Amp |
|---|---|---|
| 1 | Not used | — |
| 2 | Headlamp power | 25 |
| 3 | High beams, Turn signals, Interior lamps, Headlamp power | 25 |
| 4 | Keep Alive Power (KA PWR) | 5 |
| 5 | Heated Exhaust Gas Oxygen (HEGO) sensors | 15 |
| 6 | Fuel pump | 20 |
| 7 | RUN/ACC relay – Electrochromatic mirror, Cigar lighter, Front and rear wipers, Compass | 40 |
| 8 | Powertrain Control Module (PCM), Injectors and coil | 30 |
| 9 | Alternator | 15 |
| 10 | Heated seats | 30 |
| 11 | PCM | 10 |
| 12 | Power point | 20 |
| 13 | Fog lamps | 20 |
| 14 | A/C clutch, A/C relay | 15 |
| 15 | Anti-lock Brake System (ABS) solenoid | 30 |
| 16 | I/P fuse panel (RUN/START) | 25 |
| 17 | Ignition (main) | 50 |
| 18 | Blower motor | 40 |
| 19 | Accessory delay relay – Subwoofer and 4WD, Low beam | 40 |
| 20 | ABS | 60 |
| 21 | Horn, CHMSL, Cluster, Power locks and power seats | 40 |
| 22 | Cooling fan | 40 (2.3L) 50 (3.0L) |
| 23 | Rear defroster, Park lamps relay | 40 |
| 24 | High/Low speed fan | 40 (2.3L) 50 (3.0L) |
| 25 | Shunt | — |
| Relays | ||
| R2 | PCM | |
| R3 | Fuel pump | |
| R4 | Cooling fan | |
| R5 | High/Low speed fan 1 | |
| R6 | Blower motor | |
| R7 | Starter | |
| R8 | High/Low speed fan 2 | |
| R9 | Fog lamps | |
| R10 | A/C | |
| Diodes | ||
| D1 | Not used | |
| D2 | A/C diode |
Passenger Compartment
| Fuse Number | Protected components | Fuse Amp |
|---|---|---|
| 1 | Trailer tow park lamps | 15 |
| 2 | Not used | — |
| 3 | Front and rear park lamps | 15 |
| 4 | Ignition switch | 10 |
| 5 | Powertrain Control Module (PCM relay), Fuel pump relay, Main fan relay, High/Low speed fan relay 2, PATS module | 2 |
| 6 | Center High-Mounted Stop Lamp (CHMSL), Stop lamps, PCM, Anti-lock Brake System (ABS), Speed control, Brake On-Off switch | 15 |
| 7 | Instrument cluster, Diagnostic connector, Power mirror switch, Radio | 10 |
| 8 | 2007: Canister vent | 5 |
| 9 | Power door locks, Power seats | 30 |
| 10 | Heated mirrors | 15 |
| 11 | Sunroof, Electrochromatic mirror, Compass | 15 |
| 12 | Radio | 5 |
| 13 | Not used | — |
| 14 | Not used | — |
| 15 | Power windows | 30 |
| 16 | Subwoofer | 15 |
| 17 | Low beams | 15 |
| 18 | 4WD | 10 |
| 19 | Not used | — |
| 20 | Horn | 15 |
| 21 | 2005-2006: Rear wiper motor, Rear wiper washer 2007: Rear wiper motor, Rear wiper washer | 10 15 |
| 22 | Instrument cluster | 10 |
| 23 | Not used | — |
| 24 | Cigar lighter | 20 |
| 25 | Front wiper motor, Front wiper washer | 20 |
| 26 | Climate control system mode switch | 5 |
| 27 | Canister vent (2005-2006), Speed control cancel switch | 5 |
| 28 | Instrument cluster | 10 |
| 29 | Reverse park aid | 10 |
| 30 | Not used | — |
| 31 | Not used | — |
| 32 | Brake-Transmission shift lock | 10 |
| 33 | Airbag module, Passenger Airbag Deactivation (PAD) indicator lamp, Occupant Classification Sensor (OCS) | 15 |
| 34 | ABS module, Evac and Fill, Speed control | 5 |
| 35 | Heated seats module, 4WD | 5 |
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Tom Smith is a passionate car mechanic and automotive enthusiast, specializing in the intricate world of car fuse boxes. With years of hands-on experience under the hood, he has earned a reputation as a reliable expert in his field. As the founder and content creator of the popular blog website 'carsfuse.com,' Tom has dedicated himself to sharing his extensive knowledge of car fuse boxes and electrical systems with the world.