🏷️ Basic Information

Make:

Jeep

Model:

Wrangler

Product Name:

Jeep WRANGLER Full Service & Repair Manual 2004-ONWARDS

Chassis Codes Covered:

JK (2007-2018), JL (2018-Present)

👋 Introduction

Segment:

Compact SUV / Off-Road Vehicle

Target Audience:

Off-road enthusiasts, Jeep owners seeking DIY maintenance and repair capabilities, professional mechanics.

Key Competitors:

Toyota 4Runner, Ford Bronco, Land Rover Defender, Nissan Xterra (depending on specific model year and market).

Unique Selling Points:

Legendary off-road capability, iconic design, modularity (removable doors and roof), extensive aftermarket support. This manual provides the technical backbone for maintaining and repairing this versatile platform.

Benefit To Owner:

Empowers owners with the knowledge to perform routine maintenance, diagnose issues, and execute repairs, saving time and money while ensuring optimal vehicle performance and longevity.

📋 Manual Details

Markets Covered:

North America, Europe, Global (based on common configurations)

Estimated Page Count:

Extensive (typically 1000+ pages for full service manuals covering multiple generations)

Type:

Factory Service Repair Workshop Manual

Language:

English

Format:

Digital Download (PDF, compatible with computer, tablet, smartphone)

📖 Manual Coverage

Engine:

Detailed diagnostics, repair, overhaul, and tuning for all applicable gasoline and diesel engines (e.g., 3.8L V6, 3.6L Pentastar V6, 2.8L CRD Diesel, 2.0L Turbo I4).

Transmission:

Service, repair, and overhaul procedures for manual (e.g., NV3550, NSG370) and automatic transmissions (e.g., 42RLE, 8HP75).

Drivetrain:

Front and rear axle assembly, differentials, transfer case (e.g., NV241, NV245, NV247), driveshafts, and CV joints.

Suspension:

Front and rear suspension systems (coil springs, solid axles, control arms, sway bars), shock absorbers, and steering linkage.

Brakes:

Hydraulic brake system, ABS, EBD, brake calipers, rotors, pads, brake lines, and parking brake.

Steering:

Power steering system, steering gearbox/rack and pinion, steering column, and linkages.

Electrical:

Complete wiring diagrams, fuses, relays, battery, charging system, starting system, lighting, and accessory circuits.

Body And Chassis:

Body panel removal/installation, frame, doors, hood, tailgate, interior trim, and convertible top systems.

HVAC:

Heating, ventilation, and air conditioning system components, diagnosis, and repair.

Fuel System:

Fuel pump, injectors, fuel lines, fuel tank, and evaporative emissions control (EVAP).

Cooling System:

Radiator, water pump, thermostat, coolant passages, and fan clutch/electric fan.

Exhaust System:

Exhaust manifolds, catalytic converters, mufflers, and exhaust pipes.

Safety Systems:

Airbag system, seat belts, and related sensors and modules.

Diagnostic Troubleshooting:

Comprehensive troubleshooting guides with symptom-based diagnostics and OBD-II codes.

Preventive Maintenance:

Detailed schedules for oil changes, fluid checks/flushes, filter replacements, tire rotations, and inspections.

Routine Servicing:

Step-by-step guides for common maintenance tasks like brake pad replacement, spark plug changes, and fluid top-offs.

Major Repairs:

In-depth procedures for engine rebuilds, transmission overhauls, suspension component replacement, and more.

Component Replacement:

Detailed instructions for replacing sensors, actuators, pumps, alternators, starters, and other individual components.

Diagnostics:

Troubleshooting flowcharts and procedures for identifying and resolving various mechanical and electrical issues.

Special Tools:

Identification and usage instructions for specialized tools required for specific repair procedures.

Depth Level:

Comprehensive (from basic maintenance to complete engine and transmission rebuilds, including torque specifications and clearances).

Diagnostic Capability:

Advanced diagnostics, including wiring schematics, component testing procedures, and module programming information (where applicable).

📊 Manual Specifications

File Type:

PDF

Searchable:

Yes (typically)

Printability:

High-quality, printable pages

Binding:

Not Applicable (Digital Download)

Paper Quality:

Not Applicable (Digital Download)

⚙️ Engine Specifications

Jk Generation Engine:

3.8L V6 (2007-2011), 3.6L Pentastar V6 (2012-2018)

Jl Generation Engine:

2.0L Turbocharged I4 (2018-Present), 3.6L Pentastar V6 (2018-Present), 3.0L EcoDiesel V6 (optional)

3 6L Pentastar V6 Horsepower:

285 hp @ 6400 rpm (typical)

3 6L Pentastar V6 Torque:

260 lb-ft @ 4800 rpm (typical)

2 0L Turbo I4 Horsepower:

270 hp @ 5250 rpm (typical)

2 0L Turbo I4 Torque:

295 lb-ft @ 3000 rpm (typical)

Injection Type:

Multi-point fuel injection (MPFI) or Direct Fuel Injection (DFI) depending on engine.

Fuel Type:

Unleaded gasoline (87 octane recommended for naturally aspirated, higher for turbo/performance variants).

🔧 Transmission

Jk Standard Transmission:

6-speed manual (NSG370)

Jl Standard Transmission:

6-speed manual (NSG370)

Jk Optional Transmission:

5-speed automatic (42RLE)

Jl Optional Transmission:

8-speed automatic (8HP75)

Transfer Case:

Command-Trac (NV241 GII), Selec-Trac (NV245), Rock-Trac (NV241OR) depending on trim.

Automatic Transmission Fluid Type:

Chrysler ATF+4 (for 42RLE), Mopar ZF 8-Speed Automatic Transmission Fluid (for 8HP75).

Manual Transmission Fluid Type:

Mopar Manual Transmission Lubricant (or equivalent GL-4 spec).

📐 Dimensions

Jk 2 Door Wheelbase:

95.4 inches (2423 mm)

Jk 4 Door Wheelbase:

116.0 inches (2946 mm)

Jl 2 Door Wheelbase:

96.1 inches (2441 mm)

Jl 4 Door Wheelbase:

118.4 inches (3007 mm)

Jk Curb Weight:

Approx. 3,900 - 4,500 lbs (1769 - 2041 kg) depending on configuration.

Jl Curb Weight:

Approx. 4,000 - 4,800 lbs (1814 - 2177 kg) depending on configuration.

🛡️ Safety Features

NHTSA Rollover Rating:

Typically 3 or 4 stars (varies by year and configuration).

IIHS Crash Test Performance:

Varies by year; later models generally perform better, especially in side impact and roof strength.

Standard Active Safety:

Traction Control (TCS), Electronic Stability Control (ESC), Hill Start Assist (HSA), Trailer Sway Control (TSC).

Standard Passive Safety:

Front airbags, side-curtain airbags (standard on later models), anti-lock brakes (ABS), crumple zones.

💡 Technology Features

Uconnect System:

Available with Uconnect touchscreen systems ranging from 5-inch to 8.4-inch displays, featuring Apple CarPlay, Android Auto, and SiriusXM Satellite Radio.

Available Driver Assistance:

Blind-Spot Monitoring, Rear Cross-Path Detection, ParkView Rear Back-Up Camera, Forward Collision Warning (on select trims/packages).

Connectivity Options:

USB ports, Bluetooth connectivity for hands-free calling and audio streaming, available Wi-Fi hotspot (JL).

🔧 Maintenance

Oil Change Interval:

Typically every 10,000 miles (16,000 km) or 12 months, whichever comes first, with synthetic oil (consult specific engine recommendations).

Engine Air Filter Replacement:

Every 30,000 miles (48,000 km) or as needed based on driving conditions.

Cabin Air Filter Replacement:

Every 20,000 miles (32,000 km) or annually.

Coolant Flush:

Initial flush at 100,000 miles (160,000 km), then every 50,000 miles (80,000 km) thereafter (for HOAT coolant).

Engine Oil Type:

SAE 5W-30 (for 3.6L Pentastar V6 and 2.0L Turbo I4, check manual for specific variants).

Coolant Type:

Mopar Antifreeze/Coolant (OAT) or HOAT (Hybrid Organic Acid Technology) - check owner's manual for specific vehicle year.

Brake Fluid Type:

DOT 3 or DOT 4 (check manual for specific requirement).

Common Jk Issues:

Death wobble (steering instability), coolant leaks (especially from water pump/thermostat housing), exhaust manifold cracks, alternator failures, skimode (limp mode).

Common Jl Issues:

Early reports of minor electrical gremlins, potential turbocharger issues in some 2.0L variants, infotainment system glitches.

📚 Vehicle History

Jeep Legacy:

Tracing roots back to World War II Willys MB, Jeep has a long-standing reputation for robust, off-road-capable vehicles.

Jk Generation:

Introduced in 2007, the JK marked a significant modernization with a unibody chassis and more refined interior compared to its TJ predecessor, while retaining core Wrangler DNA.

Jl Generation:

Launched in 2018, the JL is the most advanced Wrangler to date, featuring a lighter aluminum-intensive construction, new engine options (including turbo and diesel), and updated technology and safety features.

Manufacturing Location:

Toledo, Ohio, USA

🏆 Awards & Recognition

Offroad Magazine Awards:

Consistently recognized by off-road publications for its capability and design (e.g., Four Wheeler Pickup Truck of the Year awards for specific Wrangler generations).

Consumer Reports Ratings:

Varies by year and specific model, often scoring well for owner satisfaction related to its off-road prowess, but can be lower for predicted reliability.