🏷️ Basic Information Identification Make: Jeep Model: Liberty Year: 2003 Codes Chassis Code: KJ 👋 Introduction Market Position Vehicle Segment: Compact SUV / Off-road oriented Competitive Analysis Key Competitors: Ford Escape, Toyota RAV4, Honda CR-V, Nissan Xterra Key Features Unique Selling Points: Rugged styling, available 4x4 system (Command-Trac, Selec-Trac), strong off-road capability for its class Target Audience: Enthusiasts seeking an affordable, capable compact SUV with off-road prowess and utility 📋 Manual Details Coverage Areas Primary Coverage: Service and Repair Page Count Estimated Pages: 1500-2000 Manual Type Type: Factory Service Manual (WSM) Language Language: English Format Format: Digital Download (likely PDF) 📖 Manual Coverage Systems Covered Engine Mechanical: Engine disassembly, assembly, diagnosis, troubleshooting, performance tuning, cooling system, lubrication system Engine Electrical: Ignition system, fuel injection system, starting and charging system, sensors, actuators, ECM/PCM diagnosis Transmission Manual: Service, repair, and diagnosis of manual transmissions Transmission Automatic: Service, repair, and diagnosis of automatic transmissions (if applicable) Drivetrain: Front axle, rear axle, transfer case, driveshafts, U-joints, CV joints, wheel bearings Suspension: Front and rear suspension components, diagnosis, alignment, shock absorbers, springs, control arms Steering: Power steering system, steering column, steering gear/rack and pinion, diagnosis Brakes: Hydraulic system, ABS, disc brakes (front/rear), parking brake, diagnosis, component replacement Exhaust: Exhaust system components, catalytic converter, mufflers, diagnosis Fuel: Fuel tank, fuel pump, fuel lines, fuel injectors, evaporative emission control (EVAP) HVAC: Heating, ventilation, and air conditioning system diagnosis, component replacement, refrigerant handling Electrical System: Body electrical systems, lighting, interior/exterior lamps, switches, relays, fuses, battery, wiring diagrams Body And Chassis: Body panels, doors, hinges, locks, glass, interior trim, structural components, corrosion protection Diagnostics: OBD-II diagnostic trouble codes (DTCs), diagnostic procedures, scan tool usage Procedures Included Routine Maintenance: Oil changes, filter replacements, fluid checks, tire rotations, spark plug replacement Troubleshooting: Systematic fault finding for various vehicle issues Repair Procedures: Detailed step-by-step instructions for component removal, installation, and repair Component Replacement: Replacement of wear items, engine parts, transmission components, body parts, etc. Wiring Diagrams: Comprehensive electrical schematics for all vehicle systems Diagnostic Flowcharts: Visual guides for diagnosing specific problems Technical Depth Depth: In-depth, professional-level repair and diagnostic information Coverage Scope: Covers all major mechanical, electrical, and body systems for comprehensive repairs 📊 Manual Specifications File Format File Type: PDF Print Quality Printability: Printable pages for physical use in a workshop environment Binding Type Binding: N/A (Digital) Paper Type Paper: N/A (Digital) ⚙️ Engine Specifications Primary Engine Engine Code And Description: 3.7L (3701cc) V6 SOHC (PowerTech) - EKG Engine Block Material: Cast Iron Cylinder Head Material: Aluminum Performance Horsepower: 210 hp @ 5200 rpm Torque: 235 lb-ft @ 4000 rpm Fuel System Fuel Delivery: Sequential Multi-Port Fuel Injection (MPI) Fuel Type: Unleaded Gasoline Engine Mechanical Bore X Stroke: 3.70 x 3.37 in (94.0 x 85.5 mm) Compression Ratio: 9.6:1 Maintenance Spark Plug Type: Champion RE10MCC4 or equivalent Oil Capacity With Filter: 5.0 quarts (4.7 liters) Recommended Oil Viscosity: SAE 5W-30 🔧 Transmission Standard Transmission Type: 4-speed Automatic (42RLE) Optional Transmission Type Manual: 5-speed Manual (NV150) Features Automatic Transmission Fluid: Mopar ATF+4 (or equivalent) Manual Transmission Fluid: Mopar Manual Transmission Lubricant (or equivalent SAE 75W-90 GL-5) Drivetrain Transfer Case Options: Command-Trac NV131 (Part-time 2-speed), Selec-Trac NV242 (Full-time 2-speed) 📐 Dimensions Exterior Wheelbase: 104.4 inches (2652 mm) Length: 173.5 inches (4407 mm) Width: 72.6 inches (1844 mm) Height: 72.4 inches (1839 mm) Ground Clearance: 8.7 inches (221 mm) Weights Curb Weight Approx: 3,800 - 4,200 lbs (1724 - 1905 kg) Towing Capacity Max: 3500 lbs (1588 kg) Payload Capacity Max: 850 lbs (386 kg) 🛡️ Safety Features Ratings NHTSA Front Driver Side Impact: ★★★★★ (5-star) NHTSA Front Passenger Side Impact: ★★★★★ (5-star) IIHS Moderate Overlap Frontal Offset: Good IIHS Side Impact: Good Active Features ABS: Standard (4-wheel disc with ABS) Traction Control: Optional (Traction Control System - TCS) Electronic Stability: Optional (Electronic Stability Program - ESP) Passive Features Airbags: Standard driver and front passenger airbags Seatbelts: 3-point seat belts with pretensioners 💡 Technology Features Infotainment Audio System: Factory AM/FM/CD player with optional Infinity speaker system. Auxiliary inputs may vary by trim. Navigation: Rarely equipped; aftermarket units were more common. Driver Assistance Cruise Control: Standard on most trims. Connectivity Onboard Diagnostics: OBD-II compliant system for emissions and vehicle diagnostics. 🔧 Maintenance Service Intervals Oil Change Interval: Every 3,000-7,500 miles (5,000-12,000 km) or 6 months, depending on driving conditions and oil type used (refer to manual for specifics). Air Filter Replacement: Every 15,000-30,000 miles (24,000-48,000 km) or as needed based on inspection. Cabin Air Filter: Every 15,000-20,000 miles (24,000-32,000 km). Coolant Flush Interval: Every 30,000-60,000 miles (48,000-96,000 km) or 2-5 years. Fluid Specifications Engine Coolant: Mopar Antifreeze/Coolant (HOAT) 5-Year/100,000 Mile Formula or equivalent. Power Steering Fluid: Mopar Power Steering Fluid or equivalent (refer to manual for specific type if different from ATF+4). Brake Fluid: DOT 3 (or DOT 4 if specified for ABS). Known Issues...
Factory AM/FM/CD player with optional Infinity speaker system. Auxiliary inputs may vary by trim.
Navigation:
Rarely equipped; aftermarket units were more common.
Driver Assistance
Cruise Control:
Standard on most trims.
Connectivity
Onboard Diagnostics:
OBD-II compliant system for emissions and vehicle diagnostics.
🔧 Maintenance
Service Intervals
Oil Change Interval:
Every 3,000-7,500 miles (5,000-12,000 km) or 6 months, depending on driving conditions and oil type used (refer to manual for specifics).
Air Filter Replacement:
Every 15,000-30,000 miles (24,000-48,000 km) or as needed based on inspection.
Cabin Air Filter:
Every 15,000-20,000 miles (24,000-32,000 km).
Coolant Flush Interval:
Every 30,000-60,000 miles (48,000-96,000 km) or 2-5 years.
Fluid Specifications
Engine Coolant:
Mopar Antifreeze/Coolant (HOAT) 5-Year/100,000 Mile Formula or equivalent.
Power Steering Fluid:
Mopar Power Steering Fluid or equivalent (refer to manual for specific type if different from ATF+4).
Brake Fluid:
DOT 3 (or DOT 4 if specified for ABS).
Known Issues
Common Problems V6:
Intake manifold gaskets can leak, camshaft position sensors may fail, occasional PCV valve issues.
Common Problems Transmission:
42RLE automatic transmission can exhibit harsh shifting or solenoid issues; 4WD system engagement can be a concern.
Common Problems Suspension:
Ball joint wear, sway bar link noise, control arm bushings.
Common Problems Electrical:
Window regulator failures, power lock actuator issues, HVAC blower motor resistor problems.
📚 Vehicle History
Brand Heritage
Jeep Legacy:
Jeep has a long-standing reputation for ruggedness, off-road capability, and utility dating back to WWII.
Model Evolution
Kj Generation:
First Generation Liberty (KJ), produced from 2002 to 2007. This model replaced the Cherokee (XJ) in Jeep's lineup in North America.
Design Language:
Emphasized a more rounded, modern styling compared to its boxy predecessor, while retaining Jeep's signature seven-slot grille and round headlights.
Production
Manufacturing Plant:
Toledo North Complex, Toledo, Ohio, USA
🏆 Awards & Recognition
Recognitions
Segment Awards:
While not a frequent recipient of major mainstream awards, it was often praised for its off-road capability relative to its price point and class.
Ratings
Consumer Reports Reliability:
Reliability ratings historically varied, with some model years and components showing better performance than others. The manual would detail common failure points and fixes.
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