Mercury Mariner (2008 – 2011) Fuse Box Location & Diagrams
The Mercury Mariner (2008–2011) uses fuse boxes to protect essential electrical circuits and vehicle systems. This guide covers the fuse box locations and diagrams, including fuse ratings, assignments, and protected components to help identify the correct fuse during electrical troubleshooting and replacement.
Fuse Box Location
Passenger Compartment Fuse Box
The fuse box is located on the passenger side of the center console, behind the cover.
Engine Compartment Fuse Box
The Power distribution box is located in the engine compartment (on the driver’s side).
Fuse Box Diagrams
Passenger Compartment Fuse Box
| Fuse/Relay Location | Fuse Amp Rating | Protected Circuits (With Year Differences) |
|---|---|---|
| 1 | 30A | Not used (Spare) — 2008–2011 |
| 2 | 15A | Brake On/Off switch — 2008–2011 |
| 3 | 15A | 2008: Not used (Spare)2009–2011: SYNC module |
| 4 | 30A | 2008: Not used (Spare)2009–2011: Moon roof |
| 5 | 10A | Keypad illumination, Brake Shift Interlock (BSI), Passenger compartment fuse panel — 2009–20112008: Keypad illumination, Brake Shift Interlock (BSI), SPDJB |
| 6 | 20A | Turn signals, Stop lamps — 2008–2011 |
| 7 | 10A | Low beam headlamps (Left) — 2008–2011 |
| 8 | 10A | Low beam headlamps (Right) — 2008–2011 |
| 9 | 15A | Interior lights — 2008–2011 |
| 10 | 15A | Backlighting — 2008–2011 |
| 11 | 10A | Four-wheel drive — 2008–2011 |
| 12 | 7.5A | Power mirror switch — 2008–2011 |
| 13 | 5A | 2008: Canister vent (7.5A)2009–2011: Not used (Spare) |
| 14 | 10A | 2008–2009: FCIM (Radio buttons), Satellite radio, Front display module2010–2011: FCIM (Radio buttons), Front display module, GPS module |
| 15 | 10A | Climate control — 2008–2011 |
| 16 | 15A | Not used (Spare) — 2008–2011 |
| 17 | 20A | All lock motor feeds, Liftgate release, Liftglass release — 2008–2011 |
| 18 | 20A | Heated seat — 2008–2011 |
| 19 | 25A | Rear wiper — 2008–2011 |
| 20 | 15A | Datalink — 2008–2011 |
| 21 | 15A | Fog lamps — 2008–2011 |
| 22 | 15A | Park lamps — 2008–2011 |
| 23 | 15A | High beam headlamps — 2008–2011 |
| 24 | 20A | Horn relay — 2008–2011 |
| 25 | 10A | Demand lamps — 2008–2011 |
| 26 | 10A | Instrument panel cluster — 2008–2011 |
| 27 | 20A | Ignition switch — 2008–2011 |
| 28 | 5A | Radio — 2008–2011 |
| 29 | 5A | Instrument panel cluster — 2008–2011 |
| 30 | 5A | 2008: Overdrive cancel2009–2011: Not used (Spare) |
| 31 | 10A | Restraints control module — 2008–2011 |
| 32 | 10A | 2008–2009: Not used (Spare)2010–2011: Rear video camera module |
| 33 | 10A | Not used (Spare) — 2008–2011 |
| 34 | 5A | Not used (Spare) — 2008–2011 |
| 35 | 10A | 2008–2009: Four-wheel drive, Electric Power Assist Steering (EPAS)2010–2011: Four-wheel drive, Electric Power Assist Steering (EPAS), Park aid module, Active park assist module |
| 36 | 5A | Passive Anti-Theft System (PATS) transceiver — 2008–2011 |
| 37 | 10A | Climate control — 2008–2011 |
| 38 | 20A | 2008–2009: Subwoofer/Amplifier (Audiophile radio)2010–2011: Subwoofer/Amplifier (Premium radio) |
| 39 | 20A | Radio, Radio amplifier (Navigation only) — 2008–2011 |
| 40 | 20A | Front power point — 2008–2011 |
| 41 | 15A | 2008–2009: Driver/passenger door lock switches, Automatic dimming mirror, Compass, Ambient lighting, Moon roof2010–2011: Added Camera display in mirror |
| 42 | 10A | Not used (Spare) — 2009–2011 |
| 43 | 10A | 2008: Rear wiper logic, Heated seats relay, Auto dimming mirror2009–2011: Rear wiper logic, Heated seats relay, Instrument cluster |
| 44 | 10A | Not used (Spare) — 2008–2011 |
| 45 | 5A | Front wiper logic, Blower motor relay — 2008–2011 |
| 46 | 7.5A | Occupant Classification System (OCS), Passenger Airbag Deactivation Indicator (PADI) — 2008–2011 |
| 47 | 30A Circuit Breaker | 2008: Power windows, Moon roof2009–2011: Power windows |
| 48 | — | Delayed accessory relay — 2008–2011 |
Engine Compartment Fuse Box
| Fuse/Relay Location | Amp Rating | Type | Protected Circuits |
|---|---|---|---|
| A | 80A | Midi Fuse | Electronic Power Steering Module (EPAS) (2008–2011) |
| B | 125A | Midi Fuse | SPDJB (2008) / Passenger Compartment Fuse Panel (2009–2011) |
| 1 | 15A | Mini Fuse | Heated mirror (2008–2011) |
| 2 | 30A | Cartridge Fuse | Rear defroster (2008–2011) |
| 3 | 20A | Cartridge Fuse | Rear power point (center console) (2008–2011) |
| 4 | — | — | Not used (2008–2011) |
| 5 | 10A | Mini Fuse | PCM Keep Alive Power (2008–2011); PCM relay and Canister vent (2009–2011) |
| 6 | 15A | Mini Fuse | Alternator (2008–2011) |
| 7 | 15A | Mini Fuse | Reverse lamps (2008); Liftgate latch (2009–2011) |
| 8 | 20A | Mini Fuse | Trailer tow parking lamps (2008–2011) |
| 9 | 50A | Cartridge Fuse | Anti-lock Brake System (ABS) (2008–2011) |
| 10 | 30A | Cartridge Fuse | Front wipers (2008–2011) |
| 11 | 30A | Cartridge Fuse | Starter (2008–2011) |
| 12 | 40A | Cartridge Fuse | Blower motor (2008–2011) |
| 13 | 10A | Mini Fuse | A/C clutch (2008–2011) |
| 14 | 15A | Mini Fuse | Trailer tow turn lamps (2008–2011) |
| 15 | — | — | Not used (2008–2011) |
| 16 | 40A | Cartridge Fuse | Cooling fan 1 (2008–2011) |
| 17 | 40A | Cartridge Fuse | Cooling fan 2 (2008–2011) |
| 18 | 20A | Cartridge Fuse | ABS solenoid (2008–2011) |
| 19 | 30A | Cartridge Fuse | Power seats (2008–2011) |
| 20 | — | Relay | A/C clutch relay (2008–2011) |
| 21A | — | Relay | Rear defroster relay (2008–2011) |
| 21B | — | Relay | Not used (2008); Fuel relay (2009–2011) |
| 21C | — | Relay | Blower relay (2008–2011) |
| 21D | — | Relay | PCM relay (2008–2011) |
| 22 | 20A | Mini Fuse | Not used (2008); Fuel pump (2009–2011) |
| 23 | 15A | Mini Fuse | Not used (2008); Fuel injectors (2009–2011) |
| 24 | — | — | Not used (2008–2011) |
| 25 | 5A | Mini Fuse | Not used (2008); Anti-lock Brake System (ABS) (2009–2011) |
| 26 | 15A | Mini Fuse | PCM transmission (2008); Ignition coils (2009–2011) |
| 27 | 10A | Mini Fuse | PCM MIL (2008); PCM general powertrain components malfunction indicator lamp (2009–2011) |
| 28 | 20A | Mini Fuse | PCM Non-MIL (2008); PCM emission-related powertrain components malfunction indicator lamp (2009–2011) |
| 29 | 15A | Mini Fuse | PCM (2008–2011) |
| 30A | — | Relay | Cooling fan 1 relay (2008–2011) |
| 30B | — | Relay | Starter relay (2008–2011) |
| 30C | — | Relay | Cooling fan main relay (2008–2011) |
| 30D | — | Relay | Cooling fan 2 relay (2008–2011) |
| 31A | — | Relay | Reverse lamp relay (2008–2011) |
| 31B | — | Relay | Not used (2008–2011) |
| 31C | — | Relay | Trailer tow left turn relay (2008–2011) |
| 31D | — | Relay | Trailer tow right turn relay (2008–2011) |
| 31E | — | Relay | Trailer tow park relay (2008–2011) |
| 31F | — | Relay | Not used (2008); Liftgate latch relay (2009–2011) |
| 32 | — | — | Not used (2008–2011) |
| 33 | — | Diode | PCM diode (2008–2011) |
| 34 | — | Diode | Start diode (2008–2011) |
| 35 | 10A | Mini Fuse | Reverse lamp relay, Speed control module, Rear defrost relay (2008); Run/start, Reverse lamps, Rear defrost relay (2009–2011) |
| 36 | — | — | Not used (2008–2011) |
| 37 | — | — | Not used (2008-2009) |
Additional Relay Box (Hybrid)
| № | Protected components | A |
|---|---|---|
| 1 | Not used | — |
| 2 | Not used | — |
| 3 | Not used | — |
| 4 | Vacuum pump monitor | 5 |
| 5 | Not used | — |
| 6 | Not used | — |
| Relay | Electric vacuum pump (solid state) |
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