Mercury Mountaineer 2010 Fuse Box Info
Passenger compartment fuse box location:
The fuse box is located below the instrument panel on the driver’s side.
Engine compartment fuse box location:
Fuse Box Diagram | Layout
Passenger compartment fuse box:
| Fuse/Relay N° | Rating | Functions |
| 1 | 20A | Moon roof, Adjustable pedals, Memory seats, Lumbar motor |
| 2 | 5A | Microcontroller power (SJB) |
| 3 | 20A | Radio, Navigation amplifier, GPS module |
| 4 | 10A | On-board diagnostic (OBD II) connector |
| 5 | 5A | Moon roof, Door lock switch illumination, Auto dimming rear view mirror |
| 6 | 20A | Liftglass release motor, Door unlock/lock |
| 7 | 15A | Trailer stop/turn |
| 8 | 15A | Ignition switch power, Passive anti-theft system (PATS), Cluster |
| 9 | 2A | 6R Transmission control module/Powertrain control module (Ignition RUN/START), Fuel pump relay |
| 10 | 5A | Front wiper RUN/ACC relay in power distribution box (PDB) |
| 11 | 5A | Radio start |
| 12 | 5A | Rear wiper motor RUN/ACC, Trailer battery charge relay in PDB, Radio |
| 13 | 15A | Heated mirror, Manual climate rear defrost indicator |
| 14 | 20A | Horn |
| 15 | 10A | Reverse lamps |
| 16 | 10A | Trailer reverse lamps |
| 17 | 10A | Restraints control module, Passenger occupancy |
| 18 | 10A | Reverse park aid, Roll stability control™ (RSC) switch, RSC, All wheel drive (AWD) module, Heated seat switches, Auxiliary climate control |
| 19 | - | Not used |
| 20 | 10A | Climate control system, Brake shift |
| 21 | - | Not used |
| 22 | 15A | Brake switch, Bi-color stop lamps, High-mount brake lamp, All turn lamps |
| 23 | 15A | Interior lamps, Puddle lamps, Battery saver, Instrument illumination, Homelink |
| 24 | 10A | Cluster, Theft indicator light |
| 25 | 15A | Trailer tow park lamps |
| 26 | 15A | License plate/rear park lamp, Front park lamps, Manual climate |
| 27 | 15A | Tri-color stop lamps |
| 28 | 10A | Climate controls |
| CB1 | 25A | Windows |
| Relays | The following relays are located on either side of the passenger compartment fuse panel | |
| Relay 1 | - | Delayed accessory relay |
Engine compartment fuse box:
| Fuse/Relay N° | Rating | Functions |
| 1 | 50A | Battery feed 2 (passenger compartment fuse panel) |
| 2 | 50A | Battery feed 3 (passenger compartment fuse panel) |
| 3 | 50A | Battery feed 1 (passenger compartment fuse panel) |
| 4 | 30A | Fuel pump, Injectors |
| 5 | 30A | Third row seat (left) |
| 6 | 40A | Anti-lock brake system (ABS) pump |
| 7 | 40A | Powertrain Control Module (PCM) |
| 8 | - | Not used |
| 9 | - | Not used |
| 10 | 30A | Power seat (right) |
| 11 | 30A | Starter |
| 12 | 30A | Third row seat (right) |
| 13 | 30A | Trailer tow battery charger |
| 14 |
30A 40A |
Memory seats Non-memory seats |
| 15 | 40A | Rear defrost, Heated mirrors |
| 16 | 40A | Front blower motor |
| 17 | 30A | Trailer electronic brakes |
| 18 | 30A | Auxiliary blower motor |
| 19 | 30A | Running boards |
| 20 | 30A | Front wiper motor |
| 21 | 20A | Rear power point |
| 22 | 20A | Subwoofer |
| 23 | 20A | Not used |
| 24 | 10A | PCM – keep alive power, Canister vent |
| 25 | 20A | Front power point/Cigar lighter |
| 26 | 20A | All wheel drive (AWD) module (4.6L engine only) |
| 27 | 20A | 6R Transmission module (4.6L engine only) |
| 28 | 20A | Heated seats |
| 29 | 20A | Headlamps (right) |
| 30 | 25A | Rear wiper |
| 31 | 15A | Fog lamps |
| 32 | 5A | Power mirrors |
| 33 | 30A | ABS valve |
| 34 | 20A | Headlamps (left) |
| 35 | 10A | AC clutch |
| 36 | 20A | Console bin power point |
| 37 | 30A | Driver window motor |
| 38 | 15A | 5R Transmission (4.0L engine only) |
| 39 | 15A | PCM power |
| 40 | 15A | Fan clutch, Positive crackcase ventilation (PCV) valve, A/C clutch relay |
| 41 | 15A | Satellite radio module, DVD, SYNC |
| 42 | 15A | Redundant brake switch, Electronic vapor management valve, Mass air flow sensor, Heated exhaust gas oxygen (HEGO) sensor, EVR, Variable cam timing (VCT)1 (4.6L engine only), VCT2 (4.6L engine only), CMCV (4.6L engine only), Catalyst monitor sensor |
| 43 | 15A | Coil on plug (4.6L engine only), Coil tower (4.0L engine only) |
| 44 | 15A | Injectors |
| 45A | - | Not used |
| 45B | - | Not used |
| 46A | - | Not used |
| 46B | - | Not used |
| 49 | - | Fuel pump relay |
| 50A | - | Fog lamps relay |
| 50B | - | AC clutch relay |
| 51 | - | Not used |
| 52 | - | Not used |
| 53 | - | One Touch Integrated Start (OTIS) (diode) |
| 54 | - | Trailer battery charger relay |
| 55A | - | PCM relay |
| 55B | - | Front wiper relay |
| 56A | - | Blower relay |
| 56B | - | Starter relay |
