🏷️ Basic Information

Make:

Mercury

Model:

Grand Marquis

Year:

2009

Body Style:

Full-size Sedan

Generation Name:

Fourth Generation (2003-2011)

Generation Code:

DE114

Platform:

Ford Panther Platform

👋 Introduction

Segment:

Full-Size Sedan, Luxury/Comfort Oriented

Target Audience:

Consumers seeking a comfortable, spacious, and durable RWD sedan; DIY enthusiasts and independent repair shops.

Competitors:

Chevrolet Impala, Dodge Charger, Toyota Avalon, Buick Lucerne

Vehicle Strengths:

Robust body-on-frame construction, powerful V8 engine, comfortable ride, spacious interior, rear-wheel drive.

Manual Advantages:

Licensed OE data, digital convenience, comprehensive coverage, user-friendly interface, cost-effective compared to dealership manuals.

📋 Manual Details

Coverage Scope:

Comprehensive Factory Service and Repair Information

Estimated Pages:

Thousands (Digital Format)

Type:

Official Service and Repair Manual Software

Language:

English

Format:

Online Access (Web Browser Based)

Access Duration:

1 Year Subscription

Renewal Options:

Discounted additional years available

Device Compatibility:

PC, Laptop, Smartphone, Tablet

Browser Requirements:

Any Modern Web Browser with Internet Connection

📖 Manual Coverage

Powertrain:

Engine Mechanical, Fuel System, Ignition System, Exhaust System, Cooling System, Engine Control Systems (PCM/ECM)

Drivetrain:

Automatic Transmission (4R75E/4R75W), Driveshaft, Axles, Differential

Chassis:

Suspension (Front Independent, Rear Solid Axle), Steering System (Hydraulic Power), Brakes (Front Disc, Rear Disc, ABS, Traction Control)

Electrical:

Body Control Module (BCM), Powertrain Control Module (PCM), Lighting, Instrumentation, Audio System, Power Accessories, Wiring Diagrams (Complete)

HVAC:

Heating, Ventilation, Air Conditioning (HVAC) System Components and Operation

Body:

Body Exterior Panels, Doors, Hood, Trunk, Interior Trim, Glass

Maintenance:

Scheduled Maintenance, Oil Changes, Filter Replacements, Fluid Checks and Top-offs

Diagnostics:

Troubleshooting Guides, Symptom-Based Diagnostics, Diagnostic Trouble Codes (DTCs) Interpretation and Resolution

Repair:

Component Removal and Installation, System Overhauls, Reassembly Procedures

Electrical Repair:

Wiring Harness Repair, Component Testing, Connector Pinouts

Special Procedures:

Torque Specifications for Critical Fasteners, Alignment Procedures, Drivetrain Calibration

Depth:

Extensive; Covers Basic to Advanced Repair and Diagnostics

Information Source:

Licensed OE (Original Equipment) Materials

📊 Manual Specifications

Format Type:

Web-Based Application

Printability:

Content is accessible and can be printed chapter by chapter or section by section.

Binding:

N/A (Digital Format)

Paper:

N/A (Digital Format)

⚙️ Engine Specifications

Engine Type:

4.6L V8 Modular (32-Valve DOHC)

Engine Code:

1F7

Displacement:

281 cu in (4.6 L)

Horsepower:

224 hp @ 4,700 rpm

Torque:

272 lb-ft @ 3,500 rpm

Induction:

Sequential Multi-Port Electronic Fuel Injection (MPI)

Fuel Type:

Regular Unleaded Gasoline (87 Octane Recommended)

System:

California Emissions System (where applicable), OBD-II Compliant

🔧 Transmission

Transmission Type:

4-Speed Automatic

Transmission Model:

4R75E / 4R75W

Drive Type:

Rear-Wheel Drive (RWD)

Transmission Fluid Type:

Mercon V Automatic Transmission Fluid (ATF)

📐 Dimensions

Length:

212.0 inches (5,385 mm)

Width:

78.1 inches (1,984 mm)

Height:

58.0 inches (1,473 mm)

Wheelbase:

114.7 inches (2,913 mm)

Front Track:

61.4 inches (1,560 mm)

Rear Track:

61.4 inches (1,560 mm)

Curb Weight:

Approximately 4,020 - 4,150 lbs (1,823 - 1,882 kg)

Gross Vehicle Weight Rating:

Approximately 5,200 lbs (2,359 kg)

Trunk Volume:

20.6 cubic feet (583 L)

🛡️ Safety Features

NHTSA Frontal Driver:

★★★★★ (5-Star)

NHTSA Frontal Passenger:

★★★★★ (5-Star)

NHTSA Side Driver:

★★★★☆ (4-Star)

NHTSA Side Passenger:

★★★★☆ (4-Star)

NHTSA Rollover:

★★★★☆ (4-Star)

ABS:

Standard 4-Wheel Anti-lock Braking System (ABS)

Traction Control:

Standard Traction Control System (TCS)

Airbags:

Frontal Airbags (Driver and Passenger), Front Side-Impact Airbags

Seatbelts:

Front Height-Adjustable Safety Belts with Pretensioners, Rear 3-Point Safety Belts

Child Seat Anchors:

LATCH (Lower Anchors and Tethers for Children) System

💡 Technology Features

Audio System:

Standard AM/FM Stereo with CD Player, optional Sirius Satellite Radio, optional premium audio system.

Display:

Analog gauges and a central information display; no touchscreen infotainment standard.

Parking Assist:

Optional Rear Parking Assist System

Connectivity Features:

Limited by modern standards; primarily basic audio connectivity (e.g., AUX input on some trims).

Cruise Control:

Standard Cruise Control

🔧 Maintenance

Oil Change Interval:

Every 5,000 miles (8,000 km) or 6 months, whichever comes first, under normal driving conditions. Severe conditions may require more frequent changes.

Tire Rotation:

Every 5,000 miles (8,000 km)

Transmission Fluid Change:

Refer to manual for specific mileage/time interval, often around 100,000 miles (160,000 km) or based on severe usage.

Engine Oil Type:

SAE 5W-20 Full Synthetic Motor Oil (API SN or latest)

Engine Oil Capacity:

6.0 U.S. Quarts (5.7 Liters) with filter change

Coolant Type:

Motorcraft® Gold Premium Engine Coolant (or equivalent meeting WSS-M97B51-A1 specification)

Brake Fluid Type:

DOT 3 Motor Vehicle Brake Fluid

Common Wear Items:

Ball joints, tie rod ends, wheel bearings (due to heavy duty chassis), rear air suspension (if equipped with optional air suspension), PI (Performance Improved) intake manifold failures (earlier models, less common by 2009).

Electrical Gremlins:

Sporadic issues with door modules, window regulators, and instrument cluster components can occur with age.

Powertrain Reliability:

Generally reliable powertrain; potential for COPs (Coil-On-Plug) ignition issues or fuel injector clogging if maintenance is neglected.

📚 Vehicle History

Brand Origin:

Mercury, a division of Ford Motor Company, established in 1938.

Model Lineage:

The Grand Marquis is a descendant of the Mercury Marquis line, evolving into a flagship full-size sedan.

Fourth Gen Intro:

Introduced for the 2003 model year, based on the updated Panther platform.

2009 Updates:

Minor revisions for 2009, focusing on feature packaging and efficiency improvements (e.g., Flex Fuel E85 capability on some models).

Manufacturing Plant:

St. Thomas, Ontario, Canada

Production Years:

1975-2011 (Mercury Grand Marquis)

Brand Discontinuation:

Mercury brand discontinued by Ford Motor Company in 2011.

🏆 Awards & Recognition

Safety Awards:

Consistently received good safety ratings from NHTSA for its structural integrity.

Consumer Reports:

Mixed to Average ratings; often praised for ride comfort and V8 power, but criticized for fuel economy and dated interior design.

Manual Certification:

Officially Licensed