The third-generation Mercury Grand Marquis, produced from 1998 to 2002, features detailed fuse box diagrams for each model year: 1998, 1999, 2000, 2001, and 2002. Here, you can find information on the locations of the fuse panels within the vehicle, along with a comprehensive guide to the layout and assignment of each fuse and relay.
Table of Contents
Cigar lighter (power outlet) fuses in the Mercury Grand Marquis are the fuses #16 (1998-2000: Cigar Lighter, Auxiliary Power Point), #19 (2001-2002: Auxiliary Power Point), #25 (2001-2002: Power Point, Cigar Lighter) in the Instrument panel fuse box.
Engine Compartment
| Fuse Number | Protected components | Fuse Amp |
|---|---|---|
| 1 | Electric Fuel Pump Relay | 20 |
| 2 | Generator, Starter Relay, Fuses 15, 18 | 30 |
| 3 | Radio, CD Changer, Subwoofer Amplifier | 25 |
| 4 | Not Used | — |
| 5 | Horn Relay | 15 |
| 6 | DRL Module | 20 |
| 7 | Circuit Breaker: Power Door Locks, Power Seats, Trunk Lid Release | 20 |
| 8 | Air Suspension System | 30 |
| 9 | Fuses 5, 9 | 50 |
| 10 | Fuses 1, 2, 6, 7, 10, 11, 13 and Circuit Breaker 14 | 50 |
| 11 | 1998-2000: Fuses 4, 8, 16 and Circuit Breaker 12 | 40 |
| 11 | 2001-2002: Fuses 4, 8, 16 and Circuit Breaker 12 | 50 |
| 12 | PCM Power Relay, PCM | 30 |
| 13 | High Speed Cooling Fan Relay | 50 |
| 14 | Rear Window Defrost Relay, Fuse 17 | 40 |
| 15 | 1998-2000: Anti-Lock Brake Module | 50 |
| 15 | 2001-2002: Anti-Lock Brake Module | 40 |
| 16 | Not Used | — |
| 17 | Cooling Fan Relay (Circuit Breaker) | 30 |
| Relays | ||
| R1 | Rear Defrost Relay | |
| R2 | Horn Relay | |
| R3 | Cooling Fan Relay | |
| R4 | Air Suspension Pump Relay |
Additional Relay Box
| Fuse Number | Relay |
|---|---|
| R1 | A/C WOT Cutout |
| R2 | Fuel Pump |
| R3 | PCM Power |
| 1 | PCM Power (Diode) |
Instrument Panel
| Fuse Number | Protected components | Fuse Amp |
|---|---|---|
| 1 | 1998: Hazard Flasher, Stop Lamps 1999-2000: Brake Pedal Position (BPP) Switch, Speed Control, Multi-Function Switch | 15 |
| 2 | Wiper Control Module, Windshield Wiper Motor | 30 |
| 3 | Not Used | — |
| 4 | Lighting Control Module, Main Light Switch (1999-2000), Headlamp Dimmer Switch (1998) | 15 |
| 5 | Backup Lamps, Variable Assist Power Steering (VAPS), Turn Signals, Air Suspension, Daytime Running Lamps, Electronic Day/Night Mirror, Shift Lock, EATC, Speed Chime Warning (1999-2000) | 15 |
| 6 | Speed Control, Main Light Switch, Headlamp Dimmer Switch (1998), Lighting Control Module, Clock | 15 |
| 7 | Powertrain Control Module (PCM) Power Diode, Ignition Coils | 25 |
| 8 | Lighting Control Module, Power Mirrors, Remote Keyless Entry, Clock Memory, Radio Memory, Electronic Automatic Temperature Control (EATC), Power Seats (1998), Power Windows, SecuriLock, PATS (1999-2000) | 15 |
| 9 | Blower Motor, A/C-Heater Mode Switch | 30 |
| 10 | Air Bag Module | 10 |
| 11 | Radio | 5 |
| 12 | Circuit Breaker: Lighting Control Module, Flash-to-Pass, Main Light Switch | 18 |
| 13 | Air Bag Module (1998), Warning Lamps, Analog Cluster Gauges and Indicators, Electronic Automatic Transmission, Lighting Control Module, Front Control Unit (1998) | 15 |
| 14 | Circuit Breaker: Window/Door Lock Control, Driver’s Door Module, One Touch Down | 20 |
| 15 | Anti-Lock Brakes, Charge Indicator (1998), Instrument Cluster (1999-2000), Transmission Control Switch (1999-2000) | 10 |
| 16 | Cigar Lighter, Emergency Flasher Relays (1998), Auxiliary Power Point (2000) | 20 |
| 17 | Power Mirrors (1998), Rear Defrost | 10 |
| 18 | Air Bag Module, Digital Instrument Cluster (1998) | 10 |
| Fuse Number | Protected components | Fuse Amp |
|---|---|---|
| 1 | Not Used | — |
| 2 | Not Used | — |
| 3 | Not Used | |
| 4 | Air Bags | 10 |
| 5 | Not Used | — |
| 6 | Instrument Cluster, Warning Lamps Module, Transmission Control Switch, Lighting Control Module (LCM) | 15 |
| 7 | Not Used | — |
| 8 | Power Train Control Module (PCM) Power Relay, Coil-on -Plugs, Radio Noise Capacitator, Passive Anti-theft System (PATS) | 25 |
| 9 | Not Used | — |
| 10 | Rear Window Defrost | 10 |
| 11 | Not Used | — |
| 12 | Not Used | — |
| 13 | Radio | 5 |
| 14 | Traction Control Switch, Anti-lock Brakes (ABS), Instrument Cluster | 10 |
| 15 | Speed Control Servo, Main Light Switch Illumination, Lighting Control Module (LCM), Clock | 15 |
| 16 | Reversing lamps, Turn Signals, Shift Lock, DRL Module, EVO Steering, Electronic Day/Night Mirror | 15 |
| 17 | Wiper Motor, Wiper Control Module | 30 |
| 18 | Heater Blower Motor | 30 |
| 19 | Auxiliary Power Point | 20 |
| 20 | Not Used | — |
| 21 | Multifunction Switch, Lighting Control Module (LCM), Passive Anti-theft System (PATS) Indicator, Parking Lamps, Instrument Panel Light | 15 |
| 22 | Speed Control Servo, Hazard Lights | 15 |
| 23 | Power Windows/Door Locks, PATS, Exterior Rear View Mirrors, EATC Module, Instrument Cluster, Clock, Lighting Control Module (LCM), Interior Lamps | 15 |
| 24 | Left Hand Low Beam | 10 |
| 25 | Power Point, Cigar Lighter | 20 |
| 26 | Right Hand Low Beam | 10 |
| 27 | Lighting Control Module (LCM), Main Light Switch, Cornering Lamps, Fuel Tank Pressure Sensor | 25 |
| 28 | Power Windows | 20 |
| 29 | Not Used | — |
| 30 | Not Used | — |
| 31 | Not Used | — |
| 32 | ABS Values | 20 |
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