🏷️ Basic Information

Make:

Jeep

Model:

Wrangler

Year:

2012

Chassis Code:

JK

👋 Introduction

Segment:

Compact SUV / Off-road Vehicle

Target Audience:

Off-road enthusiasts, adventure seekers, and owners performing DIY maintenance and repairs.

Competitors:

Toyota FJ Cruiser, Nissan Xterra, Land Rover Defender (historically), Ford Bronco (upcoming).

Iconic Design:

Iconic Jeep design with removable doors, hood, and roof options.

Off Road Capability:

Renowned off-road capability, solid axle front and rear suspension (JK generation), available locking differentials.

Engine Upgrade:

Introduction of the Pentastar 3.6L V6 engine, a significant upgrade in power and efficiency for this generation.

📋 Manual Details

Coverage Scope:

All models and all repairs A-Z

Estimated Pages:

1500+

Type:

Factory Service Manual (FSM) / Repair Manual

Language:

English

Format:

Digital (PDF)

📖 Manual Coverage

Engine Systems:

3.6L Pentastar V6 (Ergonomics, Diagnosis, Repair Procedures, Component Replacement, Timing System, Cooling System, Lubrication System, Fuel System, Ignition System, Emission Control Systems)

Transmission Systems:

6-speed manual (NSG370), 5-speed automatic (W5A580) - Diagnosis, Repair, Fluid Specifications, Clutch System, Torque Converter, Valve Body, Gearbox Internals

Drivetrain Systems:

4x4 Transfer Case (NV241GHD), Front & Rear Axles (Dana 30/44), Driveshafts, CV Joints, Wheel Bearings, Differentials (including locking differentials if applicable)

Suspension Steering:

Front & Rear Solid Axle Suspension, Coil Springs, Shock Absorbers, Control Arms, Track Bars, Steering Gearbox, Power Steering System, Tie Rods, Drag Links

Braking Systems:

Front & Rear Disc Brakes, ABS System, Brake Lines, Calipers, Master Cylinder, Parking Brake

Electrical Systems:

12V Battery, Charging System (Alternator), Starting System, Ignition System, Lighting (Headlights, Taillights, Interior), Fuses, Relays, Wiring Diagrams, Powertrain Control Module (PCM), Body Control Module (BCM), Body Electrical Features (Wipers, Horn, Power Windows, Power Locks)

HVAC Systems:

Air Conditioning, Heater, Blower Motor, Climate Control Panel, Refrigerant Handling

Body Panels:

Body Panel Repair, Door Mechanisms, Hood, Tailgate, Bumpers, Convertible Top Repair, Hardtop Removal/Installation

Interior Trim:

Seat Removal/Installation, Dashboard Components, Center Console, Trim Panels

Maintenance Procedures:

Oil Change, Filter Replacement, Fluid Checks & Top-offs, Tire Rotation, Brake Inspection, Belt Inspection/Replacement, Spark Plug Replacement, Coolant Flush

Repair Procedures:

Engine Component Replacement (Alternator, Starter, Water Pump, Fuel Pump, Injectors), Transmission Service/Rebuild, Axle Gear Ratio Changes, Suspension Component Replacement, Brake Caliper/Rotor Replacement, Electrical Component Diagnosis & Replacement, HVAC Component Replacement

Troubleshooting Diagnostics:

Diagnostic Trouble Codes (DTCs), Symptom-Based Troubleshooting, Electrical Circuit Testing, Component Testing, OBD-II Scan Tool Usage

Depth:

Comprehensive: Basic to advanced repairs, full rebuilds, detailed diagnostics, factory specifications and tolerances.

Factory Accuracy:

Vehicle Specific - Exact same information used by dealership technicians.

📊 Manual Specifications

Searchability:

Searchable PDF text

Navigation:

Hyperlinked Table of Contents and Index for easy navigation

Image Clarity:

High-resolution diagrams, schematics, and illustrations.

Binding:

Not Applicable (Digital Format)

Paper:

Not Applicable (Digital Format)

⚙️ Engine Specifications

Engine Code:

EKG

Engine Type:

3.6L (3604cc) V6 DOHC 24-Valve

Horsepower:

285 hp @ 6400 rpm

Torque:

260 lb-ft @ 4800 rpm

Fuel Delivery:

Sequential Multi-Port Fuel Injection (MPI)

Fuel Type:

Unleaded Gasoline, 87 Octane (Minimum)

Oil Capacity:

5.5 quarts (5.2 liters) with filter change (for 3.6L)

Oil Specification:

SAE 5W-30

Coolant Type:

Mopar OAT (Organic Additive Technology) Antifreeze/Coolant, Blue (MS-9769)

Coolant Capacity:

9.7 quarts (9.2 liters)

🔧 Transmission

Transmission Type:

6-Speed Manual (NSG370)

Transmission Type:

5-Speed Automatic (W5A580)

Manual Transmission Fluid:

Mopar Manual Transmission Lubricant or equivalent (refer to manual for specific part number)

Automatic Transmission Fluid:

Mopar ATF+4 (MS-9602) or equivalent

Transfer Case Fluid:

Mopar NV241GHD Transfer Case Lubricant or equivalent

📐 Dimensions

Wheelbase:

95.4 inches (2-door), 116.0 inches (4-door Unlimited)

Length:

160.0 inches (2-door), 179.4 inches (4-door Unlimited)

Width:

73.7 inches

Height:

70.5 inches (soft top), 72.1 inches (hardtop)

Ground Clearance:

10.1 inches

Curb Weight:

4,000 - 4,500 lbs (approx.)

Towing Capacity:

2,000 lbs (2-door), 3,500 lbs (4-door Unlimited)

🛡️ Safety Features

NHTSA Rollover Rating:

4/5 Stars (Varies by configuration, generally high for a vehicle of its type)

Electronic Stability Control:

Standard (ESC), with Trailer Sway Control

Traction Control:

Standard (TC)

Antilock Brakes:

Standard (ABS)

Airbags:

Front Driver and Passenger Airbags, Optional Side Curtain Airbags (for front occupants in some configurations)

Seatbelts:

Three-point seat belts with pretensioners

💡 Technology Features

Infotainment System:

Uconnect infotainment system with optional navigation, touchscreen display, SiriusXM Satellite Radio.

Audio Options:

AM/FM stereo, CD/MP3 player, Auxiliary input jack, USB port, Bluetooth connectivity (availability varies by trim level).

Driver Assistance Features:

Hill Start Assist (HSA), Hill Descent Control (HDC) - standard with some configurations.

Connectivity Options:

Bluetooth for hands-free calling and audio streaming.

🔧 Maintenance

Oil Change Interval:

Every 7,500 miles or 6 months, whichever comes first (under normal driving conditions). Severe conditions may require more frequent changes.

Tire Rotation Interval:

Every 7,500 miles

Engine Air Filter Replacement:

Inspect every 15,000 miles, replace as needed or every 30,000 miles.

Cabin Air Filter Replacement:

Inspect every 15,000 miles, replace as needed or every 30,000 miles.

Spark Plug Replacement:

Approximately 100,000 miles (iridium type for Pentastar engine).

Transmission Fluid Change:

Manual: Refer to manual for specific inspection/service. Automatic: Refer to manual for specific inspection/service, typically around 60,000 miles under normal use.

Brake Fluid:

DOT 3 or DOT 4

Power Steering Fluid:

Mopar Power Steering Fluid or equivalent (refer to manual for specific specification)

Common Problems:

Water pump leaks (early Pentastar models), clutch wear (manual transmissions under heavy use), steering box play, oil filter housing leaks, evap system leaks (loose gas cap), exhaust manifold cracks (some early Pentastar engines).

📚 Vehicle History

Jeep Legacy:

Jeep's lineage dates back to World War II with the iconic Willys MB, establishing a reputation for ruggedness and off-road prowess.

Wrangler Lineage:

The JK generation, introduced for the 2007 model year, marked a significant redesign from the TJ, featuring a longer wheelbase option (Unlimited) and a more modern chassis.

2012 Update:

The 2012 model year saw the introduction of the highly acclaimed 3.6L Pentastar V6 engine, replacing the aging 3.8L V6, offering substantial gains in power and efficiency.

Manufacturing Location:

Toledo, Ohio, USA

🏆 Awards & Recognition

Off Road Awards:

Consistently recognized by off-road publications and enthusiasts for its class-leading capability.

Consumer Satisfaction:

Generally high consumer satisfaction, particularly among owners who value its ruggedness and off-road performance.

Emissions Compliance:

Meets all applicable EPA and CARB emissions standards for the model year.