Mercury Grand Marquis (2003 – 2011) – fuse box diagram
Year of production: 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011
Passenger compartment fuse panel
’03-’04:
’05-’11:
The fuse panel is located below and to the left of the steering wheel by the brake pedal. Remove the panel cover to access the fuses.
| No. | A | Protected components |
| 1 | 15 | ’03-’04: Audio, CD changer |
| 15 | ’05-’06: Cluster, Lighting Control Module (Interior Lighting) | |
| 10 | ’07-’11: Ignition (START) – Starter relay coil, DTRS | |
| 2 | 5 | ’03-’04: Audio |
| 10 | ’05-’06: Ignition (ON) – Electronic Automatic Temperature Control (EATC) module, A/C mode switch (vehicles equipped with EATC), A/C blower relay coil (’06) | |
| 7.5 | ’07-’11: Power mirrors, Door lock switches (’07-’08), Mirror switch, Keypad switch, Decklid switch, Adjustable pedal switch, Driver’s door module, Cluster | |
| 3 | 7.5 | ’03-’04: Mirrors |
| 10 | ’05-’06: Electronic Automatic Temperature Control (EATC) module | |
| 5 | ’07-’11: Ignition (START) – Audio mute | |
| 4 | 10 | ’03-’04: Air bags |
| 10 | ’05-’06: Ignition (ON) – Anti-lock Brake System (ABS) module, Positive Crankcase Ventilation (PCV (’05)), Rear Air Suspension Module (RASM (’06)), Variable Assist Power Steering (VAPS (’06)) | |
| 10 | ’07-’11: Lighting control module (LCM) (switch illumination), Autolamp sensor | |
| 5 | — | ’03-’04: Not used |
| 10 | ’05-’06: Speed control deactivation switch, Stop signal, Brake-Transmission Shift Interlock (BTSI (’05)) (column-shift transmission) | |
| 7.5 | ’07-’11: Ignition (ON/ACC) – Lighting Control Module | |
| 6 | 15 | ’03-’04: Instrument cluster warning lamps module, Overdrive control switch, Lighting Control Module (LCM), A/C clutch, Analog cluster (’04) |
| 10 | ’05-’06: Ignition (ON) – Cluster | |
| 7.5 | ’07-’11: Lighting Control Module | |
| 7 | 10 | ’03-’04: Driver’s Door Module (DDM), Premium radio |
| 10 | ’05-’06: Lighting Control Module (Park lamps, Switch illumination (’05), Corner lamps (’06)) | |
| 10 | ’07-’11: Ignition (ON/ACC) – Wiper module | |
| 8 | 25 | ’03-’04: Powertrain Control Module (PCM) power relay, Coil-on plugs, Radio noise capacitor, Passive Anti-Theft System (PATS) |
| 10 | ’05: Ignition (ON) – Rear Air Suspension Module (RASM), Variable Assist Power Steering (VAPS) | |
| 10 | ’06: Lighting Control Module | |
| 10 | ’07-’11: Electronic Automatic Temperature Control (EATC) module (vehicles equipped with EATC only) | |
| 9 | 5 | ’03-’04: Transmission range sensor |
| 10 | ’05-’06: Lighting Control Module (Headlamps (’05), Cornering lamps (’05), Switch illumination (’06)) | |
| 7.5 | ’07-’11: Ignition (ON/ACC) – Door lock switch illumination, Heated seat switch illumination, Moon roof (’07-’08), Overhead console, Radio, Antenna, Electrochromatic mirror, Window relay coil | |
| 10 | 10 | ’03-’04: Rear window defrost, Heated mirrors |
| 5 | ’05: Ignition (ON/START) – Driver’s Door Module (DDM) | |
| 5 | ’06: Ignition (START) – Audio mute | |
| 15 | ’07-’11: Hazards | |
| 11 | 5 | ’03-’04: Traction control indicator relay (ABS w/traction control only) |
| 10 | ’05: Ignition (START) – ON/ACC relay coil | |
| 10 | ’06: Ignition (ON/ACC) – window relay coil | |
| 15 | ’07-’11: Ignition (ON) – Turn signals | |
| 12 | 15 | ’03-’04: Multi-function switch for turn/hazard lamps |
| 10 | ’05-’06: Ignition (START) – Starter relay coil, DTRS (’06) | |
| 15 | ’07-’11: Audio | |
| 13 | 5 | ’03-’04: Radio |
| 10 | ’05-’06: Ignition (START) – Wiper module | |
| 10 | ’07-’11: Ignition (ON) – Anti-lock Brake System (ABS) module (’07-’08), Rear Air Suspension Module (RASM), Variable Assist Power Steering (VAPS) (’07-’08), Cluster | |
| 14 | 10 | ’03-’04: Anti-lock Brake System (ABS), Instrument Cluster |
| 10 | ’05-’06: Ignition (ON) – BTSI (Floor-shift transmission) | |
| 15 | ’07-’11: Adjustable pedals | |
| 15 | 15 | ’03-’04: Speed control module, Lighting Control Module, Clock (’03), EATC blower motor relay, Door lock switch illumination, Heated seat switch, Moonroof |
| 7.5 | ’05-’06: Ignition (START) – Lighting Control Module, Door lock switch illumination, Heated seat switch illumination, Moonroof, Overhead console, Electrochromatic mirror | |
| 10 | ’07-’11: Ignition (ON) – EATC module, A/C mode switch (vehicles equipped with manual A/C only), A/C blower relay coil | |
| 16 | 15 | ’03-’04: Reversing lamps, Shift lock, DRL module, VAP Steering, Electronic day/night mirror, Overhead console, Air suspension, Climate control, Heated seat module, Speed chime module, Driver’s door module (’04), Back-up lamps (’04) |
| 15 | ’05-’06: Ignition (ON) – Turn signals | |
| 20 | ’07-’08: Cigar lighter, On-board diagnostics (OBD II) | |
| 20 | ’09-’11: On-board diagnostics (OBD II) | |
| 17 | 7.5 | ’03-’04: Wiper motor |
| 10 | ’05-’06: Ignition (START) – Audio | |
| 10 | ’07-’11: Ignition (ON) – A/C mode switch (vehicles equipped with manual A/C), Blend door, Heated seat modules, BTSI (Floor-shift transmission) | |
| 18 | — | ’03-’04: Not used |
| 10 | ’05-’06: Ignition (ON) – A/C mode switch (vehicles equipped with manual A/C), Blend door, Driver’s door module (’03), Heated seat modules, Daytime Running Lamps (DRL) module (’03) | |
| 15 | ’07-’11: Lighting control module (interior lighting) | |
| 19 | 15 | ’03: Brake lamps |
| 15 | ’04: Brake lamps, Brake signal for PCM, ABS and speed control module, DDM | |
| 10 | ’05-’11: Left-hand low beam, Daytime Running Lamps (DRL (’05)) | |
| 20 | — | ’03-’04: Not used |
| 10 | ’05-’11: Ignition (ON/ACC) – Back-up lamps, Anti-lock brake system (ABS (’09-’11)) | |
| 21 | 15 | ’03-’04: Lighting control module for park lamps and interior illumination, Autolamp/Sunload sensor |
| 10 | ’05-’11: Right-hand low beam, Daytime Running Lamps (DRL (’05)) | |
| 22 | 20 | ’03-’04: Speed control servo, Multi-function switch for hazard lamps, Brake on/off switch, Feed for IP fuse 19 (’04) |
| 10 | ’05-’11: Ignition (ON/ACC) – Restraint Control Module (RCM), Occupant Classification Sensor (OCS), Passenger Air bag Deactivation Indicator (PADI) | |
| 23 | 15 | ’03-’04: EATC module, Instrument cluster, Clock (’03), Lighting control module, Interior lamps, Door lock switches |
| 15 | ’05-’11: Multi-function switch (Flash-to-pass), Lighting control module (High beams) | |
| 24 | 10 | ’03-’04: Left-hand low beam |
| 10 | ’05-’11: Ignition (ON/ACC) – Passive Anti-Theft System (PATS) module, Powertrain Control Module (PCM) relay coil, Fuel relay coil, Ignition coil relay coil | |
| 25 | 15 | ’03-’04: Cigar lighter |
| 10 | ’05-’06: Autolamp/Sunload sensor, Power mirrors, Door lock switches, Adjustable pedal switch, Keypad switch (’06), Decklid switch (’06), Driver’s door module | |
| 15 | ’07-’11: Lighting control module (Park lamps, corner lamps, license lamps) | |
| 26 | 10 | ’03-’04: Right-hand low beam |
| 10 | ’05: Ignition (ON/ACC) – Analog cluster, Warning lamp module, Lighting control module, Overdrive cancel switch, Rear defroster relay coil | |
| 10 | ’06-’11: Ignition (ON/START) – Cluster, Lighting control module, Overdrive cancel switch, Rear defroster relay coil (’06), Traction control switch (’09-’11) | |
| 27 | 25 | ’03-’04: Lighting control module for cornering lamps and high beam headlamps |
| 20 | ’05-’06: Cigar lighter, OBD II, Power point (’05) | |
| — | ’07-’11: Not used | |
| 28 | 20 | ’03-’04: Circuit breaker: Power windows, Driver’s Door Module (’03) |
| 10 | ’05-’06: Center High-Mounted Stop Lamp (CHMSL) | |
| 7.5 | ’07-’11: Brake signal, LCM (brake transmission shift interlock ((BTSI)), ABS | |
| 29 | — | ’03-’04: Not used |
| 15 | ’05-’06: Audio | |
| — | ’07-’11: Not used | |
| 30 | — | ’03-’04: Not used |
| 15 | ’05-’06: Stop lamps, MFS | |
| — | ’07-’11: Not used | |
| 31 | — | ’03-’04: Not used |
| 15 | ’05-’06: Hazards | |
| 5 | ’07-’11: Key in (Lighting control module) | |
| 32 | — | ’03-’04: Not used |
| 10 | ’05-’06: Mirror heaters, Rear defroster switch indicator | |
| — | ’07-’11: Not used | |
| 33 | — | ’05-’11: Not used |
| Relay | ||
| R1 | ’05-’06: Rear defroster | |
| ’05-’11: Window | ||
Engine Compartment Fuse Box
| No. | A | Protected components |
| 1 | 25 | ’03-’04: Audio |
| 20 | ’05: Ignition switch (Key in, RUN 1, RUN 2) | |
| 25 | ’06: Ignition switch (Key in, RUN 1, RUN 2), Hazards | |
| 30 | ’07-’11: Ignition switch | |
| 2 | 20 | ’03-’04: Power point |
| 25 | ’05-’06: Ignition switch (RUN/START, RUN/ACC, START) | |
| 20 | ’07-’08: Moon roof | |
| — | ’09-’11: Not used | |
| 3 | 25 | ’03-’04: Heated seats |
| 10 | ’05-’11: Powertrain control module (PCM) – keep alive power, Canister vent (’07-’11) | |
| 4 | 15 | ’03-’04: Horns |
| 20 | ’05-’11: Fuel relay feed | |
| 5 | 20 | ’03-’04: Fuel pump |
| 10 | ’05-’11: Rear Air Suspension Module (RASM), VASM (’05-’08) | |
| 6 | — | ’03: Not used |
| 15 | ’04-’11: Alternator regulator | |
| 7 | 25 | ’03-’04: Moonroof |
| 30 | ’05-’11: PCM relay feed | |
| 8 | 20 | Driver’s Door Module (DDM), Door locks (’07-’08) |
| 9 | — | ’03-’04: Not used |
| 15 | ’05-’11: Ignition coil relay feed | |
| 10 | — | ’03-’04: Not used |
| 20 | ’05-’11: Horn relay feed | |
| 11 | 20 | ’03-’04: Daytime running lamps |
| 15 | ’05-’11: A/C clutch relay feed | |
| 12 | — | ’03-’04: Not used |
| 25 | ’05-’06: Audio | |
| 20 | ’07-’11: Audio (Subwoofer) | |
| 13 | — | ’03-’04: Not used |
| 20 | ’05-’11: Instrument panel power point | |
| 14 | — | ’03-’04: Not used |
| 20 | ’05-’11: Stop lamp switch | |
| 15 | — | ’03-’04: Not used |
| 20 | ’05-’06: Heated seats | |
| 15 | ’07-’11: Foglamps | |
| 16 | — | ’03-’04: Not used |
| 20 | ’05: Daytime Running Lamps (DRL) module | |
| 15 | ’06: Foglamps | |
| 20 | ’07-’11: Heated seats | |
| 17 | — | Not used |
| 18 | — | Not used |
| 19 | 15 | Powertrain Control Module (PCM (’03-’04)), Fuel injectors |
| 20 | 15 | PCM, HEGOs (’03-’04), Mass Air Flow (MAF) sensor (’05-’06), IAT (’06) |
| 21 | — | ’03-’04: Not used |
| 15 | ’05-’11: Powertrain loads and sensors | |
| 22 | — | Not used |
| 23 | — | Not used |
| 24 | — | ’03-’04: Not used |
| 5 | ’05: Radio mute | |
| — | ’06: Radio mute | |
| 10 | ’05-’11: Heated mirror, Rear defrost indicator | |
| 101 | 30 | ’03-’04: Ignition switch, Starter motor solenoid via starter relay, IP fuses 7, 9, 12 and 14 |
| 40 | ’05-’11: Blower relay feed | |
| 102 | 50 | Cooling fan |
| 103 | 40 | ’03-’04: Blower motor |
| 50 | ’05-’06: Instrument panel (I/P) fuse box feed #1 (I/P fuses 19 (’04), 23, 25, 27 and 31) | |
| 50 | ’07-’11: Instrument panel (I/P) fuse box feed #1, I/P fuses 10, 12, 14, 16 and 18 | |
| 104 | 40 | ’03-’04: Heated backlight relay |
| 40 | ’05-’06: Instrument panel (I/P) fuse box feed #2 (I/P fuses 1, 3, 5, 7 and 9) | |
| 50 | ’07-’11: Instrument panel (I/P) fuse box feed #2 (I/P fuses 2, 4, 6, 8, 19, 21, 23 and 25) | |
| 105 | 30 | ’03: PCM power relay |
| 30 | ’04: PCM power relay, Diagnostic connector, PDB fuses 19 and 20, A/C clutch relay, Fuel pump module relay | |
| 30 | ’05-’11: Starter relay feed | |
| 106 | 40 | Anti-lock Brake System (ABS) |
| 107 | — | ’03-’04: Not used |
| 40 | ’05-’11: Rear defroster relay feed | |
| 108 | — | ’03-’04: Not used |
| 20 | ’05-’06: Moonroof | |
| — | ’07-’08: Not used | |
| 20 | ’09-’11: Cigar lighter | |
| 109 | — | ’03-’04: Not used |
| 20 | ’05-’11: Anti-lock brake system (ABS) module | |
| 110 | — | ’03-’04: Not used |
| 30 | ’05-’11: Wiper module | |
| 111 | — | Not used |
| 112 | 50 | ’03: Ignition switch |
| 50 | ’04: Ignition switch feed to IP fuses 4, 6, 8, 11, 13, 15, 17, 20, 22 and 28 | |
| 30 | ’05-’11: Air suspension compressor | |
| 113 | 50 | ’03-’04: Feeds IP fuses 3, 5, 21, 23, 25, 27 |
| — | ’05-’11: Not used | |
| 114 | 30 | ’03-’04: VAP Steering, Air suspension compressor, Instrument cluster |
| — | ’05-’11: Not used | |
| 115 | 50 | ’03-’04: Ignition switch feed to IP fuses 16 and 18 |
| — | ’05-’11: Not used | |
| 116 | 30 | ’03-’04: Wipers |
| — | ’05-’11: Not used | |
| 117 | — | Not used |
| 118 | 20 | ’03-’04: ABS |
| — | ’05-’11: Not used | |
| 401 | — | ’03-’04: Not used |
| 601 | — | ’03-’04: Not used |
| 20 | ’05-’11: Circuit breaker: Power seats, Lumbar, Decklid | |
| 602 | 20 | ’03-’04: Circuit breaker: Adjustable pedals, Power seat, Locks, Decklid, Lumbar |
| 20 | ’05-’11: Circuit breaker: Power windows relay feed (RUN/ACC) | |
| Relay | ||
| 201 | ’03-’04: Horn | |
| ’05-’11: A/C clutch | ||
| 202 | ’03-’04: Powertrain Control Module (PCM) | |
| ’05-’11: Not used | ||
| 203 | ’03-’04: Fuel pump | |
| ’05-’11: Ignition coil | ||
| 204 | ’03-’04: A/C clutch | |
| ’05-’11: Powertrain Control Module (PCM) | ||
| 205 | ’03-’04: Traction control switch | |
| ’05: Not used | ||
| ’06-’11: Fog lamps | ||
| 206 | ’03-’04: Not used | |
| ’05-’11: Fuel | ||
| 207 | Not used | |
| 208 | ’03-’04: Moonroof | |
| ’05-’11: Not used | ||
| 209 | ’03-’04: Not used | |
| ’05-’11: Horn | ||
| 301 | ’03-’04: Blower motor | |
| ’05-’11: Starter | ||
| 302 | ’03-’04: Starter solenoid | |
| ’05-’11: Air compressor (Air suspension) | ||
| 303 | ’03-’04: Air compressor (Air suspension) | |
| ’05-’11: Blower motor | ||
| 304 | ’03-’04: Rear defrost | |
| ’05-’06: Power windows (RUN/ACC) | ||
| ’07-’11: Rear defrost | ||
| Diode | ||
| 501 | ’03-’04: Powertrain Control Module (PCM) | |
| ’05-’08: A/C clutch | ||
| ’09-’11: Not used | ||
| 502 | ’03: Not used | |
| ’04: A/C clutch | ||
| ’05-’11: Powertrain Control Module (PCM) | ||
| 503 | ’03-’04: Not used | |
| ’05-’07: Horn, Door latch | ||
| ’08-’11: Not used | ||
WARNING: Terminal and harness assignments for individual connectors will vary depending on vehicle equipment level, model, and market.