Basic Information Identification Make: Jeep Model: Liberty Year: 2003 Engine Variants Covered: 2.4L, 3.7L Codes Platform Code: KJ Introduction Market Position Segment: Compact SUV Target Audience: DIY enthusiasts, independent repair shops, professional mechanics seeking detailed repair information for the Jeep Liberty. Competitive Analysis Competitors: Ford Escape, Toyota RAV4, Honda CR-V, Nissan Xterra. Key Features Vehicle Identity: Body-on-frame construction, available four-wheel drive, Jeep's off-road heritage in a compact package. Manual Utility: Provides in-depth technical guidance essential for maintaining and repairing the specific engine and drivetrain configurations of the 2003 Jeep Liberty. Manual Details Coverage Areas General Coverage: Comprehensive workshop service and repair for Jeep Liberty 2003 models with 2.4L and 3.7L engines. Page Count Estimated Pages: 1500+ Manual Type Type: Workshop Service and Repair Manual Language Language: English Format Format: eBook (Downloadable PDF) Manual Coverage Systems Covered Powertrain: Engine mechanical (2.4L DOHC I4, 3.7L SOHC V6), fuel system, ignition system, exhaust system, engine management, cooling system, lubrication system, starting and charging system. Transmission: Automatic transmission (42LE/45RFE) and manual transmission (NV1500) service, repair, and overhaul procedures. Drivetrain: Transfer case (NV231, NV244) operation and service, front and rear axle assemblies, drive shafts, CV joints, differential service. Suspension Steering: Front and rear suspension systems (independent front, solid rear axle), steering gear, power steering system, wheel alignment specifications. Brakes: Front and rear brake systems (disc front, drum/disc rear depending on configuration), ABS, parking brake, hydraulic system component replacement and bleeding. Electrical Electronics: Complete vehicle electrical system, wiring diagrams, battery, alternator, starter, lighting, instrument cluster, body control module (BCM), power accessories, diagnostic trouble codes (DTCs). Body Chassis: Body and interior components, doors, glass, upholstery, frame, collision repair information, HVAC system, emissions control system. Procedures Included Maintenance: Scheduled maintenance, oil changes, filter replacements, fluid checks and top-offs, belt inspections and replacements, spark plug replacement, brake pad/shoe replacement. Troubleshooting: Diagnostic procedures for all major vehicle systems, symptom-based troubleshooting guides, electrical diagnostics. Repair Overhaul: Engine disassembly and reassembly, transmission overhaul, brake component replacement, suspension component replacement, electrical component diagnosis and repair. Diagnostics: OBD-II diagnostics, specific component testing, wiring diagram interpretation. Technical Depth Depth: Detailed step-by-step repair instructions, torque specifications, special tool requirements, diagnostic flowcharts, specifications and tolerances for all major components. Manual Specifications File Format File Type: PDF Searchability: Searchable text content for quick information retrieval. Print Quality Printability: Printable for hard copy use in a workshop environment. Binding Type Binding: N/A (eBook format) Paper Type Paper Quality: N/A (eBook format) Engine Specifications Primary Engine Engine 1 Name: 2.4L Power-Tech DOHC Inline-4 Engine 1 Displacement: 2429 cc (148.2 cubic inches) Engine 1 Bore X Stroke: 90.0 mm x 94.5 mm (3.54 in x 3.72 in) Engine 1 Compression Ratio: 9.5:1 Engine 1 Horsepower: 150 hp @ 5200 rpm Engine 1 Torque: 165 lb-ft @ 4000 rpm Secondary Engine Engine 2 Name: 3.7L Power-Tech SOHC V6 Engine 2 Displacement: 3701 cc (225.9 cubic inches) Engine 2 Bore X Stroke: 93.0 mm x 90.9 mm (3.66 in x 3.58 in) Engine 2 Compression Ratio: 9.0:1 Engine 2 Horsepower: 210 hp @ 5200 rpm Engine 2 Torque: 235 lb-ft @ 4000 rpm Fuel System Fuel Delivery: Multi-point fuel injection (MPFI) Fuel Type: Unleaded gasoline Transmission Standard Transmission Type 2 4L: 5-speed Manual (NV1500) Optional Transmission Type 3 7L: 4-speed Automatic (42LE / 45RFE) Features Transfer Case Options: Command-Trac NV231 (Part-time 2WD/4WD) or Select-Trac NV244 (Full-time 4WD with Selec-Trac II) Automatic Transmission Fluid Spec: ATF+4 (Mopar Material Number 05013457GA) Manual Transmission Fluid Spec: API GL-4, SAE 75W-90 synthetic manual transmission lubricant Dimensions Exterior Wheelbase: 2644 mm (104.1 inches) Length: 4415 mm (173.8 inches) Width: 1839 mm (72.4 inches) Height: 1806 mm (71.1 inches) Weights Curb Weight 2 4L: 1770 kg (3902 lbs) Curb Weight 3 7L: 1860 kg (4100 lbs) Gross Vehicle Weight Rating Gvwr: Approx. 2313 kg (5100 lbs) Safety Features Ratings NHTSA Frontal Driver Rating: Four Stars NHTSA Frontal Passenger Rating: Four Stars NHTSA Side Driver Rating: Five Stars NHTSA Side Rear Passenger Rating: Five Stars Active Features ABS: Standard Anti-lock Braking System (ABS) Traction Control: Available Traction Control System (TCS) on some models Passive Features Airbags Front: Standard front-seat airbags Airbags Side: Available front-seat mounted side airbags Seatbelts: Three-point seat belts for all occupants, pretensioners for front seats Technology Features Infotainment Audio System Options: Standard AM/FM stereo with CD player, optional premium audio systems, Sirius satellite radio. Navigation: Optional navigation system on higher trim levels. Driver Assistance Cruise Control: Standard cruise control Tire Pressure Monitoring: Available Tire Pressure Monitoring System (TPMS) Connectivity Auxiliary Input: Available auxiliary audio input jack on some models. Maintenance Service Intervals Oil Change Interval Synthetic: 10,000 miles (16,000 km) or 12 months, whichever comes first (with synthetic oil) Oil Change Interval Conventional: 5,000 miles (8,000 km) or 6 months, whichever comes first (with conventional oil) Engine Air Filter Replacement: Every 30,000 miles (48,000 km) or as...