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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Tom Smith is a passionate car mechanic and automotive enthusiast, specializing in the intricate world of car fuse boxes. With years of hands-on experience under the hood, he has earned a reputation as a reliable expert in his field. As the founder and content creator of the popular blog website 'carsfuse.com,' Tom has dedicated himself to sharing his extensive knowledge of car fuse boxes and electrical systems with the world.