🏷️ Basic Information

Make:

Lincoln

Model:

Aviator

Model Generation:

First Generation (UN171)

Model Years Covered:

2003, 2004, 2005

👋 Introduction

Vehicle Segment:

Full-size Luxury SUV

Brand Positioning:

Lincoln positioned as Ford's luxury division, offering premium features and comfort.

Key Competitors:

Cadillac Escalade, Chevrolet Tahoe/GMC Yukon (higher trims), Lexus LX, Infiniti QX56.

Manual Benefit 1:

Empowers owners to perform maintenance and repairs, saving time and money.

Manual Benefit 2:

Provides factory-level accuracy and detail, ensuring correct procedures and specifications.

Manual Benefit 3:

Comprehensive coverage allows for in-depth understanding of vehicle systems.

Manual Benefit 4:

Digital format offers convenience, searchability, and print-on-demand capability.

📋 Manual Details

Primary Coverage:

Complete Workshop Service Repair

Scope:

All Models and All Repairs A-Z

Estimated Page Count:

Varies by specific system and detail, but comprehensive (typically thousands of pages across all covered topics).

Type:

Workshop Service Repair Manual

Language:

English

File Format:

PDF

File Requirements:

Adobe PDF Reader, Winzip (or equivalent decompression software)

Compatibility:

All Versions of Windows and Mac

📖 Manual Coverage

Powertrain:

Engine, Fuel Service, Emission Control, Intake/Exhaust/Cooling, Lube, Ignition, Starting/Charging, Automatic Transmission, Manual Transmission (if applicable), Transfer Case, Drive Shaft, Differential, Axle.

Chassis:

Suspension, Tire & Wheel, Brake Control, Brakes (Front/Rear), Parking Brake, Steering Column, Power Steering.

Electrical And Body:

Air Conditioning, Supplemental Restraint System (SRS), Seat Belts, Engine Immobilizer, Cruise Control, Wiper & Washer, Door Locks, Meter/Audio/Visual, Horn, Windshield/Glass/Mirrors, Instrument Panel, Seats, Engine Hood/Doors, Exterior & Interior Trim, Electrical Systems, Multiplex/CAN Communication.

Diagnostic Procedures:

Troubleshooting guides, diagnostic codes (DTCs), symptom-based diagnostics, specific component testing procedures.

Repair Procedures:

Step-by-step instructions for disassembly, repair, reassembly, and adjustment of all vehicle systems.

Maintenance Procedures:

Routine maintenance tasks, fluid changes, filter replacements, lubrication, inspection points.

Wiring Information:

Complete wiring schematics for all electrical systems, circuit diagrams, connector pinouts.

Depth:

Factory-level detail, covering everything from basic maintenance to complex diagnostics and component rebuilds. Suitable for professional technicians and advanced DIY enthusiasts.

📊 Manual Specifications

Quality:

High-resolution, allowing for clear viewing and printing of diagrams and schematics. Searchable text where applicable.

Printability:

All pages are printable, allowing users to print only necessary sections or diagrams.

Binding:

Digital (PDF) - No physical binding. Allows for easy navigation and printing of individual pages.

Paper Type:

N/A (Digital format)

⚙️ Engine Specifications

Engine Code Common:

Triton 5.4L V8 (330 cu in)

Engine Type:

SOHC V8

Horsepower Approx:

230-240 hp @ 4500-4700 rpm (varies slightly by year)

Torque Approx:

325-330 lb-ft @ 3000 rpm (varies slightly by year)

Fuel Delivery:

Electronic Fuel Injection (EFI)

Fuel Type Recommendation:

Regular Unleaded Gasoline (87 Octane)

Coolant Capacity Approx:

Approx. 17.8 Quarts (16.8 Liters) with HEGO

Oil Capacity Approx:

6.0 Quarts (5.7 Liters) with Filter Change

Recommended Oil Viscosity:

SAE 5W-20 (API Service SG, SH, SJ, SL or ILSAC GF-2)

🔧 Transmission

Transmission Type:

4-speed Automatic Transmission (4R75E / 4R75W)

Optional Transmission:

Not applicable for this generation.

Transmission Features:

Electronic control, Overdrive, Tow/Haul mode (on some trims/years).

Automatic Transmission Fluid:

MERCON V (or equivalent)

Automatic Transmission Fluid Capacity:

Approx. 13.2 Quarts (12.5 Liters) (Pan drop and filter change)

📐 Dimensions

Wheelbase:

119.4 inches (3033 mm)

Length:

201.2 inches (5111 mm)

Width:

78.7 inches (1999 mm)

Height:

75.5 inches (1918 mm)

Curb Weight Approx:

5,100 - 5,300 lbs (2313 - 2404 kg) (varies by configuration)

Gross Vehicle Weight Rating Approx:

6,800 lbs (3084 kg)

Cargo Volume Behind 3Rd Row Approx:

16.6 cu ft (0.47 m³)

Cargo Volume Behind 2Nd Row Approx:

55.1 cu ft (1.56 m³)

Cargo Volume Behind 1St Row Approx:

113.1 cu ft (3.20 m³)

🛡️ Safety Features

NHTSA Front Driver Side Impact Rating:

5-Star (2003-2005 models)

NHTSA Front Passenger Side Impact Rating:

5-Star (2003-2005 models)

IIHS Side Impact Rating:

Good (2003-2005 models)

ABS:

Standard Anti-lock Braking System (ABS)

Traction Control:

Traction Control System (TCS) available

Electronic Stability Control:

AdvanceTrac electronic stability control available on some models.

Airbags Front:

Driver and front-passenger airbags

Airbags Side:

Front side-impact airbags available.

Seat Belts:

3-point height-adjustable front seat belts with pretensioners, rear seat belts.

💡 Technology Features

Audio System Options:

Premium audio systems, including Audiophile (with subwoofer), CD changer, and optional rear-seat entertainment system.

Navigation System:

Optional factory-installed navigation system.

Parking Assist:

Optional rear parking assist sensors.

Cruise Control:

Standard cruise control, with some models featuring adaptive cruise control (less common).

Multiplex Communication:

CAN (Controller Area Network) communication bus for module integration.

Climate Control:

Dual-zone automatic climate control available.

Seating:

Leather-trimmed seating, heated and ventilated front seats, power-adjustable seats.

🔧 Maintenance

Oil And Filter Change:

Every 5,000-7,500 miles (8,000-12,000 km) or 6 months, whichever comes first, under normal driving conditions. Consult manual for severe conditions.

Engine Coolant Flush:

Every 30,000 miles (48,000 km) or 24 months.

Automatic Transmission Fluid Change:

Every 30,000-60,000 miles (48,000-96,000 km), depending on usage and towing. Filter replacement recommended at time of fluid change.

Brake Fluid:

DOT 3 (or equivalent)

Power Steering Fluid:

Power Steering Fluid (consult manual for specific type, often MERCON or equivalent)

Differential Fluid Rear:

API GL-5, SAE 75W-140 (for limited-slip differentials, may require friction modifier)

Transfer Case Fluid:

MERCON LV or MERCON ULV (consult manual for precise specification)

Common Issue 1:

Ignition coil failure and spark plug blow-out (especially on early models with 2-valve Triton engines).

Common Issue 2:

Water pump leaks or failure.

Common Issue 3:

Transmission control module (TCM) issues or solenoid pack failures.

Common Issue 4:

Variable Assist Power Steering (VAPS) pump issues.

Common Issue 5:

Rear air suspension compressor failure or air leaks (on models so equipped).

📚 Vehicle History

Lincoln Brand Legacy:

Lincoln has a long history as a premium American automotive brand, known for comfort, luxury, and distinctive styling.

Aviator Introduction:

The Lincoln Aviator was introduced for the 2003 model year, based on the Ford U1 Platform (shared with the Ford Explorer and Mercury Mountaineer). It served as Lincoln's entry into the full-size luxury SUV segment.

Aviator Generation Details:

This first generation (UN171) was produced from 2003 to 2005. It was characterized by its distinctive Lincoln styling cues, independent rear suspension, and availability of features like AWD.

Production Period:

2003-2005

Assembly Location:

Hogansville, Kentucky, USA (Ford's Kentucky Truck Plant)

🏆 Awards & Recognition

Safety Awards:

Received 5-star front impact safety ratings from NHTSA for its model years, indicating strong structural integrity.

IIHS Ratings:

Rated 'Good' for side-impact protection by the IIHS, a strong indicator of safety in side collisions.

Manufacturer Certification:

This manual is presented as the 'exact same manual used by technicians at the dealerships', implying factory OEM certification in its original form.