Mercury Mountaineer 2002 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 | 30A | Radio Sense, 4x4, ABS Control Module |
| 2 | 20A | Folding Mirror, Moon Roof, Heated Seats, Moon roof |
| 3 | 20A | Radio, Amplifier, Power Antenna |
| 4 | 5A | Digital Transmission Range Sensor |
| 5 | 15A | Flasher Relay (Turn, Hazards) |
| 6 | 10A | Right Horn |
| 7 | 15A | Heated Mirrors |
| 8 | 30A | Washer Pump Relays (Front and Rear), Front Wiper Control |
| 9 | 15A | Rear Wiper Coil and Contact |
| 10 | 10A | Heated Backlight Relay Coil, Heated Seat Module, Temp Blend Actuator, A/C Clutch Contact |
| 11 | - | Not Used |
| 12 | 5A | Foglamp Switch,4x4 module |
| 13 | 5A | Over Drive Cancel Switch, GEM Start, Flex Fuel Sender |
| 14 | 5A | PATS Module |
| 15 | 5A | 4 x 4, Memory Seat Disable |
| 16 | 5A | Power Mirror, Security Module (turn), Manual Climate Control |
| 17 | 15A | Delayed Acc. Coil, Battery Saver, Interior Lamps |
| 18 | 10A | Left Horn |
| 19 | - | Not Used |
| 20 | 5A | Memory Module, GEM Module |
| 21 | 5A | Instrument Cluster, Compass, Flasher Coil |
| 22 | - | Not Used |
| 23 | 15A | Brake Pedal Position Switch |
| 24 | 15A | Cigar Lighter, OBD II |
| 25 | 5A | Mode, Temperature Actuator, Auxiliary Climate Control, Trailer Tow Battery Charge, Moon Roof |
| 26 | 7.5A | Park Aid, Brake Shift Interlock, Approach Lamp Relay Coil |
| 27 | 7.5A | Electronic Compass Mirror, Security Module, Digital Transmission Range Sensor - Backup Lamps |
| 28 | 10A | Air Bag Diagnostics |
| 29 | 5A | 4 x 4, GEM Module signal, ABS Control Module, Moon Roof |
| 30 | 5A | Daytime Running Lamps (DRL), Remote Solenoid, DEATC Climate Controller |
Passenger compartment fuse box - top side (These relays are located on the reverse side of the passenger compartment fuse panel):
| Fuse/Relay N° | Rating | Functions |
| Relay 1 | - | Flasher Relay |
| Relay 2 | - | Rear Defrost |
| Relay 3 | - | Delayed Accessory Relay |
| Relay 4 | - | Front Washer Pump |
| Relay 5 | - | Battery Saver |
| Relay 6 | - | Rear Washer Pump |
| Relay 7 | - | Interior Lamps |
Engine compartment fuse box:
| Fuse/Relay N° | Rating | Functions |
| 1 | 60A | PJB |
| 2 | 20A | Door Locks |
| 3 | 20A | GCC Pusher Fan (export only) |
| 4 | 30A | Heated Backlight |
| 5 | 40A | ABS |
| 6 | 60A | Circuit Breaker |
| 7 | 20A | Power Point #2 |
| 8 | - | Not Used |
| 9 | 20A | Power Point #1 |
| 10 | 20A | ABS Module |
| 11 | 40A | PTEC |
| 12 | 50A | Ignition Relay |
| 13 | 30A | Trailer Tow Battery |
| 14 | 10A | Fog Lamps |
| 15 | 5A | Memory |
| 16 | 15A | Headlamp Switch |
| 17 | 20A | 4 x 4 (v-batt 2) |
| 18 | 20A | 4 x 4 (v-batt 1) |
| 19 | 20A | High Beam Relay |
| 20 | 30A | Electric Brake |
| 21 | - | Not Used |
| 22 | 20A | Autolmap; Low Beam |
| 23 | 30A | Ignition Switch |
| 24 | 10A | Rear Fog Lamps |
| 25 | 20A | Security Module (horns) |
| 26 | 15A | Fuel Pump |
| 27 | 20A | Trailer Tow Lamps |
| 28 | 10A | Daytime Running Lamps (DRL) |
| 29 | 60A | PJB |
| 30 | - | Not Used |
| 31 | - | Not Used |
| 32 | - | Not Used |
| 33 | 30A | Auxiliary Blower Motor |
| 34 | 30A | Power Seats |
| 35 | - | Not Used |
| 36 | 40A | Blower Motor |
| 37 | 15A | A/C Clutch |
| 38 | 15A | Coil On Plug |
| 39 | 15A | High Beam |
| 40 | 15A | PTEC Power |
| 41 | 15A | HEGO, UMV, CMS, PTEC |
| 42 | 10A | Right Low Beam |
| 43 | 10A | Left Low Beam |
| 44 | 10A | High Beam Relay |
| 45 | 7.5A | Right High Beam (export only) |
| 46 | 15A | Injectors |
| 47 | - | Daytime Running Lamps Relay, GCC Pusher Fan (export) |
| 48 | - | Fuel Pump Relay |
| 49 | - | High Beam Relay |
| 50 | - | Fog Lamp Relay |
| 51 | - | Autolamp Relay |
| 52 | - | A/C Clutch Relay |
| 53 | - | Park Lamp Relay (export) |
| 54 | - | Wiper Run / Park Relay |
| 55 | - | Blower Motor Relay |
| 56 | - | Starter Relay |
| 57 | - | PTEC Relay |
| 58 | - | Ignition Relay |
| 59 | - | Wiper High/Low Relay |
| 60 | - | PCM Diode |
| 61 | - | A/C Clutch Diode |
| 67 | 30A | Delayed accessory |
Rear Relay Box (The relay box is located on the rear passenger side quarter trim panel):
| Fuse/Relay N° | Rating | Functions |
| Relay 14 | - | Rear fog lamps-export |
| Relay 15 | - | Trailer Tow back up lamps |
| Relay 16 | - | Not Used |
| Relay 17 | - | Rear Wipers |
| Relay 18 | - | Trailer Tow Stop EAO |
| Relay 19 | - | Trailer Tow Park Lamps |
| Relay 20 | - | Trailer Tow Battery Charge |
| Relay 21 | - | Not Used |
| Relay 22 | - | Approach Lamps |
| Relay 23 | - | Not Used |
| Diode 3 | - | Not Used |
| Diode 4 | - | Not Used |
Auxiliary relay box - trailer tow (The relay box is located on the front right fender well underneath the speed control module):
| Fuse/Relay N° | Rating | Functions |
| Relay 64 | - | Trailer Tow (left turn) |
| Relay 65 | - | Trailer Tow (right turn) |
| Relay 66 | - | Not Used |
