Positioning:
        
        
            The iconic Jeep Wrangler JK continues its legacy of off-road prowess. This manual caters to owners and independent repair shops seeking detailed technical information for maintenance and repair.
        
     
    
    
        
            Competitors:
        
        
            Direct competitors in the off-road SUV segment include the Toyota 4Runner and Ford Bronco (in later iterations). The Wrangler's unique body-on-frame construction and removable top set it apart.
        
     
    
    
        
            Vehicle Attributes:
        
        
            Renowned for its off-road capability, iconic design, removable doors and roof, and robust construction.
        
     
    
    
        
            Value Proposition:
        
        
            Empowers users to perform a wide range of services and repairs, significantly reducing labor costs and ensuring proper vehicle maintenance.
        
     
 
    
    
    
        
            Engine Diesel:
        
        
            2.8L Diesel (VM Motori R428 based)
        
     
    
        
            Engine Gasoline:
        
        
            3.6L V6 Pentastar
        
     
    
        
            Drivetrain:
        
        
            4x4 (Command-Trac NV241 GII transfer case, Dana 30 front axle, Dana 44 rear axle)
        
     
    
        
            Transmission Auto:
        
        
            5-speed automatic (W5A580 for 2.8 Diesel, NAG1 for 3.6L Pentastar)
        
     
    
        
            Transmission Manual:
        
        
            6-speed manual (NSG370 for 3.6L Pentastar)
        
     
    
        
            Suspension:
        
        
            Solid front and rear axles with coil springs
        
     
    
        
            Brakes:
        
        
            Front ventilated discs, Rear solid discs
        
     
    
        
            Steering:
        
        
            Hydraulic power steering
        
     
    
        
            Electrical:
        
        
            Full Electrical System Diagrams, ECU, Sensors, Lighting, Charging System
        
     
    
        
            Body:
        
        
            Body Panels, Doors, Convertible Top, Frame, Bumpers, Interior Trim
        
     
    
        
            Climate Control:
        
        
            HVAC System (Heating, Ventilation, Air Conditioning)
        
     
    
        
            Safety Systems:
        
        
            Airbags, Seat Belts, ABS, Traction Control (TCS), Electronic Stability Control (ESC)
        
     
    
    
        
            Maintenance:
        
        
            Scheduled Maintenance (Oil changes, filter replacements, fluid checks), Brake Pad/Rotor Replacement, Spark Plug Replacement, Belt Replacement
        
     
    
        
            Diagnostics:
        
        
            Troubleshooting Guides, Diagnostic Trouble Codes (DTCs) interpretation, Sensor Testing
        
     
    
        
            Engine Repair:
        
        
            Engine Assembly/Disassembly, Cylinder Head Repair, Piston/Ring Replacement, Crankshaft/Bearing Service, Oil Pump and Cooler Service
        
     
    
        
            Transmission Repair:
        
        
            Automatic Transmission Overhaul and Repair, Manual Transmission Overhaul and Repair, Clutch Service
        
     
    
        
            Drivetrain Repair:
        
        
            Axle Assembly Overhaul, Differential Service, Driveshaft and U-Joint Replacement, Transfer Case Service
        
     
    
        
            Suspension Repair:
        
        
            Shock Absorber/Strut Replacement, Coil Spring Replacement, Control Arm Bushing Replacement, Ball Joint Replacement
        
     
    
        
            Brake Repair:
        
        
            Brake Caliper Rebuild, Brake Line Replacement, ABS System Diagnostics and Repair
        
     
    
        
            Electrical Repair:
        
        
            Wiring Harness Repair, Component Testing (Starter, Alternator, Ignition Coils), Sensor Replacement, ECU/PCM Diagnostics and Programming
        
     
    
        
            Bodywork:
        
        
            Door Panel Removal, Convertible Top Mechanism Repair, Fender/Bumper Replacement, Glass Replacement
        
     
    
        
            Climate Control Repair:
        
        
            A/C Compressor Replacement, Evaporator/Condenser Service, Blower Motor Replacement, Heater Core Replacement
        
     
    
        
            Interior Repair:
        
        
            Seat Removal, Dashboard Disassembly, Interior Trim Panel Repair
        
     
    
    
        
            Depth:
        
        
            Comprehensive (A-Z, covering all service and repair procedures)
        
     
    
        
            Diagnostics Level:
        
        
            Advanced Diagnostics
        
     
    
        
            Repair Scope:
        
        
            Full Rebuilds, Component Replacement, Routine Maintenance
        
     
 
    
    
    
        
            Engine Code:
        
        
            2.8L CRD (Common Rail Diesel Engine), VM Motori R428 family
        
     
    
        
            Displacement:
        
        
            2.8 Liters (2776 cc)
        
     
    
        
            Configuration:
        
        
            Inline 4-cylinder, Turbocharged and Intercooled
        
     
    
    
    
        
            Engine Code:
        
        
            3.6L V6 Pentastar
        
     
    
        
            Displacement:
        
        
            3.6 Liters (3604 cc)
        
     
    
        
            Configuration:
        
        
            V6, Naturally Aspirated
        
     
    
        
            Fuel Type:
        
        
            Unleaded Gasoline
        
     
    
    
        
            Horsepower Hp:
        
        
            Approximately 200 hp (Varies slightly by market/tune)
        
     
    
        
            Torque Lb Ft:
        
        
            Approximately 330-350 lb-ft (Varies slightly by market/tune)
        
     
    
    
        
            Horsepower Hp:
        
        
            285 hp @ 6400 rpm
        
     
    
        
            Torque Lb Ft:
        
        
            260 lb-ft @ 4800 rpm
        
     
    
    
        
            Injection:
        
        
            Common Rail Direct Injection (CRDI)
        
     
    
        
            Emission Control:
        
        
            Diesel Particulate Filter (DPF), Selective Catalytic Reduction (SCR) (depending on market)
        
     
    
    
        
            Injection:
        
        
            Multi-Port Fuel Injection (MPFI)
        
     
    
        
            Emission Control:
        
        
            Catalytic Converter
        
     
 
    
    
    
        
            Type:
        
        
            5-speed automatic (W5A580, Mercedes-Benz heritage)
        
     
    
        
            Fluid Type:
        
        
            ATF+4 (Chrysler spec) or equivalent specified in manual
        
     
    
    
        
            Type:
        
        
            5-speed automatic (NAG1, Mercedes-Benz heritage)
        
     
    
        
            Fluid Type:
        
        
            ATF+4 (Chrysler spec) or equivalent specified in manual
        
     
    
    
        
            Type:
        
        
            6-speed manual (NSG370)
        
     
    
        
            Fluid Type:
        
        
            Manual Transmission Fluid (MTF) GL-4 or specified equivalent
        
     
    
    
        
            Type:
        
        
            Command-Trac NV241 GII (Part-time, 2-speed, manual shift lever operation)
        
     
    
        
            Fluid Type:
        
        
            ATF+4 or specified equivalent
        
     
 
    
    
    
        
            Wheelbase 2 Door:
        
        
            95.4 inches (2423 mm)
        
     
    
        
            Wheelbase 4 Door Jku:
        
        
            116.0 inches (2946 mm)
        
     
    
        
            Length 2 Door:
        
        
            164.3 inches (4173 mm)
        
     
    
        
            Length 4 Door Jku:
        
        
            184.9 inches (4697 mm)
        
     
    
        
            Width Without Doors:
        
        
            73.7 inches (1872 mm)
        
     
    
        
            Height:
        
        
            73.6 inches (1869 mm) (approximate)
        
     
    
    
        
            Curb Weight 2 Door:
        
        
            4,100 - 4,400 lbs (1860 - 2000 kg) (approximate, varies by engine/trim)
        
     
    
        
            Curb Weight 4 Door Jku:
        
        
            4,400 - 4,800 lbs (2000 - 2180 kg) (approximate, varies by engine/trim)
        
     
    
        
            Towing Capacity:
        
        
            2,000 lbs (907 kg) (2-door), 3,500 lbs (1588 kg) (4-door/JKU)
        
     
    
    
        
            Wheel Bolt Pattern:
        
        
            5 x 5 inches (127 mm)
        
     
    
        
            Standard Tire Size Jk:
        
        
            P225/75R16, LT255/75R17 (Common options)
        
     
    
        
            Standard Wheel Size:
        
        
            16-inch or 17-inch steel/alloy
        
     
 
    
    
    
        
            System Options:
        
        
            Uconnect infotainment system with touchscreen options (e.g., 6.5-inch), AM/FM/CD/DVD/MP3 player.
        
     
    
        
            Navigation:
        
        
            Optional GPS navigation system.
        
     
    
    
        
            Features:
        
        
            Traction Control, Electronic Stability Control, Hill Start Assist, Hill Descent Control (available on select trims/options).
        
     
    
    
        
            Phone Integration:
        
        
            Bluetooth connectivity for hands-free calling and audio streaming.
        
     
    
    
        
            Lighting:
        
        
            Halogen headlights, available LED lighting upgrades. Fog lights typically standard or optional.
        
     
 
    
    
    
        
            Oil Change:
        
        
            Every 6,000-7,500 miles (10,000-12,000 km) or 12 months, whichever comes first. Check manual for specific details.
        
     
    
        
            Fuel Filter Replacement:
        
        
            Every 15,000-20,000 miles (24,000-32,000 km) or as per manual, critical for diesel longevity.
        
     
    
        
            Air Filter Replacement:
        
        
            Every 15,000-20,000 miles (24,000-32,000 km) or based on visual inspection, more frequent in dusty conditions.
        
     
    
        
        Service Intervals Gasoline
    
 
    
        
            Oil Change:
        
        
            Every 6,000-7,500 miles (10,000-12,000 km) or 12 months.
        
     
    
        
            Spark Plug Replacement:
        
        
            Approximately 100,000 miles (160,000 km) for iridium spark plugs.
        
     
    
    
        
            Engine Oil Diesel:
        
        
            API CJ-4 or CK-4 compliant, SAE 5W-30 or 5W-40 (check manual for exact viscosity based on climate).
        
     
    
        
            Engine Oil Gasoline:
        
        
            SAE 5W-30, meeting Chrysler MS-6395 specification.
        
     
    
        
            Coolant:
        
        
            Mopar OAT (Organic Additive Technology) Coolant or equivalent meeting Chrysler MS-90003 specification. Typically a pink/orange color.
        
     
    
        
            Brake Fluid:
        
        
            DOT 3 or DOT 4 (refer to manual for specific requirement).
        
     
    
    
        
            Diesel Common Issues:
        
        
            Potential for EGR valve issues, turbocharger problems, and glow plug failures. DPF regeneration cycles are critical.
        
     
    
        
            Gasoline Common Issues:
        
        
            Oil filter housing leaks, exhaust manifold cracks, and occasional TIPM (Totally Integrated Power Module) issues.
        
     
    
        
            General Jk Issues:
        
        
            Wrangler JK is known for potential leaks (water ingress), steering stabilizer issues, and sometimes death wobble if suspension components wear.
        
     
 
    
    
    
        
            Brand Legacy:
        
        
            Jeep has a storied history dating back to World War II, with the original Willys Jeep. The brand is synonymous with off-road capability and adventure.
        
     
    
    
        
            Jk Generation:
        
        
            The JK generation was introduced for the 2007 model year, representing a significant redesign from the TJ generation, including a move to four doors (Wrangler Unlimited).
        
     
    
        
            Jk Facelift:
        
        
            A notable refresh occurred for the 2011 model year, which included interior design updates and the introduction of the 3.6L Pentastar V6 engine.
        
     
    
        
            Diesel Availability:
        
        
            The 2.8L diesel engine was offered in various markets outside North America for the JK generation, providing better fuel economy for long-distance travel.
        
     
    
    
        
            Production Years:
        
        
            JK Generation: 2007-2018
        
     
    
        
            Manufacturing Plant:
        
        
            Toledo South Assembly Plant, Toledo, Ohio, USA