Mercury Grand Marquis 2010 Fuse Box Info
Passenger compartment fuse box location:
The fuse box is located below and to the left of the steering wheel by the brake pedal. Remove the panel cover to access the fuses.
Engine compartment fuse box location:
Fuse Box Diagram | Layout
Passenger compartment fuse box:
| Fuse/Relay N° | Rating | Functions |
| 1 | 10A | Ignition (START) - Starter relay coil, DTRS |
| 2 | 7.5A | Power mirrors, Mirror switch, Keypad switch, Decklid switch, Adjustable pedal switch, Driver’s door module, Cluster |
| 3 | 5A | Ignition (START) - Audio mute, Police power distribution box (PDB) (Police vehicles only) |
| 4 | 10A | Lighting control module (LCM) (switch illumination), Autolamp sensor |
| 5 | 7.5A | Ignition (ON/ACC) - LCM |
| 6 | 7.5A | LCM |
| 7 | 10A | Ignition (ON/ACC) - Wiper module |
| 8 | 10A | Electronic automatic temperature control (EATC) module (vehicles equipped with EATC only) |
| 9 | 7.5A | Ignition (ON/ACC) - Door lock switch illumination, Heated seat switch illumination, Radio, Antenna, Electrochromatic mirror, Window relay coil, Decklid relay coil and Police ON/ACC relay coil (Police vehicles only) |
| 10 |
15A 20A |
Hazards (non-Police vehicles only) Hazards (Police vehicles only) |
| 11 | 15A | Ignition (ON) - Turn signals |
| 12 | 15A | Audio |
| 13 | 10A | Ignition (ON) - rear air suspension module (RASM), Cluster |
| 14 | 15A | Taxi, Adjustable pedals |
| 15 | 10A | Ignition (ON) - EATC module, A/C mode switch (vehicles equipped with manual A/C only), A/C blower relay coil |
| 16 | 20A | On-board diagnostics (OBD II) |
| 17 | 10A | Ignition (ON) - A/C mode switch (vehicles equipped with manual A/C), Blend door, Heated seat modules |
| 18 | 15A | LCM (interior lighting) |
| 19 | 10A | LCM (Left-hand low beam) |
| 20 | 10A | Ignition (ON/START) - Back-up lamps, Anti-lock brake system (ABS) |
| 21 | 10A | LCM (Right-hand low beam) |
| 22 | 10A | Ignition (ON/START) - Restraint control module (RCM), Occupant classification sensor (OCS), Passenger airbag deactivation indicator (PADI) |
| 23 | 15A | Multi-function switch (Flash-to-pass), LCM (High beams) |
| 24 | 10A | Ignition (ON/START) - Passive anti-theft system (PATS) module, Powertrain control module (PCM) relay coil, Fuel relay coil, Ignition relay coil |
| 25 | 15A | LCM (Park lamps, corner lamps, license lamps) |
| 26 | 10A | Ignition (ON/START) - Cluster, LCM, Overdrive cancel switch, Traction control switch |
| 27 | - | Not used |
| 28 | 7.5A | Brake signal, LCM (brake transmission shift interlock), ABS |
| 29 | 2A | Hazard in (Police vehicles only) |
| 30 | 2A | Battery saver (Police vehicles only) |
| 31 | 5A | Key in (LCM) |
| 32 | 2A | Hazard out (Police vehicles only) |
| 33 | 10A | Fire suppression module (if equipped) (Police vehicles only) |
| K101 | - | Window relay, Decklid (Police vehicles only) |
Engine compartment fuse box:
| Fuse/Relay N° | Rating | Functions |
| 1 | 30A | Ignition switch |
| 2 | 20A | Spot lights (Police vehicles only) |
| 3 | 10A | Powertrain Control Module (PCM) keep alive power, Canister vent |
| 4 | 20A | Fuel relay feed |
| 5 | 10A | Rear Air Suspension Module (RASM) |
| 6 | 15A | Alternator regulator |
| 7 | 30A | PCM relay feed |
| 8 | 20A | Driver’s Door Module (DDM) |
| 9 | 15A | Ignition coil relay feed |
| 10 | 20A | Horn relay feed |
| 11 | 15A | A/C clutch relay feed |
| 12 |
20A 25A |
Audio (Subwoofer) Police tray lamps (Police vehicles only) |
| 13 | 20A | Instrument panel power point |
| 14 | 20A | Stop lamp switch |
| 15 | 15A | Foglamps (Grand Marquis only), Police accessory battery feed 1 (Police vehicles only) |
| 16 | 20A | Heated seats (Grand Marquis only), Police accessory battery feed 2 (Police vehicles only) |
| 17 | 10A | Commercial R/A (Crown Victoria only) |
| 18 | 10A | Commercial R/A (Crown Victoria only) |
| 19 | 15A | Injectors |
| 20 | 15A | PCM |
| 21 | 15A | Powertrain loads and sensors |
| 22 | 20A | Police power distribution box (PDB) outputs (Police vehicles only) |
| 23 | 20A | Police PDB outputs (Police vehicles only) |
| 24 | 10A | Heated mirror, Rear defrost indicator |
| 101 | 40A | Blower relay feed |
| 102 | 50A | Cooling fan |
| 103 | 50A | Instrument panel (I/P) fuse box feed #1, I/P fuses 10, 12, 14, 16 and 18 |
| 104 | 50A | Instrument panel (I/P) fuse box feed #2, I/P fuses 2, 4, 6, 8, 19, 21, 23 and 25 |
| 105 | 30A | Starter relay feed |
| 106 | 40A | Anti-lock Brake System (ABS) module (Pump) |
| 107 | 40A | Rear defroster relay feed |
| 108 | 20A | Cigar lighter (Non-police vehicles only), Police accessory battery feed 3 (Police vehicles only) |
| 109 | 20A | ABS module (Valves) |
| 110 | 30A | Wiper module |
| 111 | 50A | Police PDB or Police accessory battery feed (Police vehicles only) |
| 112 |
30A 40A |
Air suspension compressor (non-Police vehicles only) Police PDB relay feed (Police vehicles only) |
| 113 | 50A | Police light bar or Police right-hand kick panel accessory battery feed (Police vehicles only) |
| 114 | 50A | Police PDB or Police accessory battery feed (Police vehicles only) |
| 115 | 50A | Rear power point or Police right-hand kick panel accessory battery feed (Police vehicles only) |
| 116 | - | Not used |
| 117 | - | Not used |
| 118 | 50A | Rear power point or Police right-hand kick panel accessory battery feed (Police vehicles only) |
| 201 | - | A/C clutch |
| 202 | - | Not used |
| 203 | - | Ignition coil |
| 204 | - | PCM |
| 205 | - | Foglamps (Grand Marquis only) |
| 206 | - | Fuel |
| 207 | - | Not used |
| 208 | - | Not used |
| 209 | - | Horn |
| 301 | - | Starter |
| 302 | - | Air compressor (non-Police vehicles only), RUN/ACC relay (Police vehicles only) |
| 303 | - | Blower |
| 304 | - | Rear defrost relay |
| 501 | - | Not used |
| 502 | - | PCM |
| 503 | - | Not used |
| 601 | 20A | Power seats, Lumbar, Decklid (Police vehicles only) |
| 602 | 20A | RUN/ACC relay feed – Windows, Decklid (Police vehicles only) |
