🏷️ Basic Information

Make:

Jeep

Model:

Liberty

Model Code:

KJ

Year:

2006

👋 Introduction

Segment:

Compact SUV, positioned as an affordable and capable off-road oriented vehicle within the Jeep lineup.

Competitors:

Competed against vehicles such as the Toyota RAV4, Honda CR-V, Ford Escape, and Nissan Xterra during its production run.

Standout Features:

Known for its rugged styling, available Command-Trac and Selec-Trac 4WD systems, and off-road capability often surpassing its class rivals.

📋 Manual Details

Systems Covered:

Engine Mechanical, Engine Fuel System, Engine Cooling System, Engine Lubrication System, Engine Exhaust System, Engine Ignition System, Engine Electrical System, Automatic Transmission, Manual Transmission, Transfer Case, Drivetrain (4WD/AWD), Front Suspension, Rear Suspension, Steering System, Brake System (Hydraulic and Parking), ABS/Traction Control, Fuel Tank and Lines, Emissions Control, Body (Structure, Exterior, Interior), HVAC System, Electrical System (Wiring Diagrams, Lighting, Accessories), Body Control Modules, SRS (Airbag) System, Diagnostic Procedures, Troubleshooting Guides, Maintenance Schedules, Specifications and Tolerances, Torque Specifications, Fluid Capacities and Types

Estimated Pages:

1500+

Type:

Service Repair Workshop Manual

Language:

English

Format:

Digital (PDF)

📖 Manual Coverage

Powertrain:

Comprehensive coverage of 2.4L I4 DOHC (PowerTech), 3.7L V6 SOHC (PowerTech) engines, including disassembly, assembly, diagnostics, and repair. Detailed sections on 42RLE Automatic Transmission and NV150/NV245/247 Transfer Cases.

Diagnostics And Troubleshooting:

Step-by-step diagnostic procedures for all major systems, including engine performance, transmission shifting issues, braking problems, electrical faults, and HVAC system malfunctions. Includes symptom-based troubleshooting charts and diagnostic trouble code (DTC) interpretations.

Engine Repair:

Detailed steps for engine removal/installation, cylinder head service, piston/ring replacement, crankshaft/bearing service, valve train overhaul, timing chain/belt replacement (if applicable, though this model uses chains).

Transmission Repair:

Complete overhaul procedures for the 42RLE automatic transmission, including valve body diagnosis, clutch pack replacement, torque converter service. Manual transmission (if equipped) overhaul steps also included.

Suspension Steering:

Front and rear suspension component replacement (shocks, struts, control arms, ball joints, tie rods), steering gear box/rack and pinion service, power steering system repair.

Brake System:

Disc brake pad and rotor replacement, caliper service, brake line replacement, bleeding procedures, parking brake adjustment and repair.

Electrical System:

Comprehensive wiring diagrams for all circuits, diagnostic procedures for sensors, actuators, lighting, power windows, locks, and comfort systems. SRS system testing and component replacement instructions.

Depth:

Detailed mechanical and electrical repair procedures, including overhaul specifications, component testing, and recalibration. Covers routine maintenance, component replacement, and complex diagnostic scenarios.

📊 Manual Specifications

Searchability:

Fully searchable PDF text for quick information retrieval.

Accessibility:

Printable pages from the PDF for in-garage use.

Software Requirements:

Standard PDF reader (e.g., Adobe Acrobat Reader).

Resolution:

High-resolution scans ensuring clarity of text and diagrams.

Binding:

N/A (Digital Format)

Paper Type:

N/A (Digital Format)

⚙️ Engine Specifications

Engine 1:

2.4L I4 DOHC (PowerTech) - 4-cylinder, 16-valve, 2351cc.

Engine 2:

3.7L V6 SOHC (PowerTech) - 6-cylinder, 12-valve, 3701cc.

Engine 1 Hp:

150 hp @ 5800 rpm (approximate)

Engine 1 Torque:

165 lb-ft @ 4000 rpm (approximate)

Engine 2 Hp:

210 hp @ 5200 rpm (approximate)

Engine 2 Torque:

235 lb-ft @ 4000 rpm (approximate)

Fuel Delivery:

Electronic Fuel Injection (EFI)

Recommended Fuel:

87 Octane Unleaded Gasoline (for both engines)

Engine I4:

2.4L PowerTech (encoder likely within VIN, e.g., 'G')

Engine V6:

3.7L PowerTech (encoder likely within VIN, e.g., 'K')

🔧 Transmission

Transmission Type 1:

4-Speed Automatic (42RLE)

Transmission Type 2:

6-Speed Manual (NV3550 - discontinued in later KJ models, check specific build)

Drivetrain Options:

2WD (RWD), 4WD Part-Time (Command-Trac NV150/NV245), 4WD Full-Time (Selec-Trac NV247 - typically with V6)

Automatic Transmission Fluid:

Chrysler ATF+4 (Mopar designation) or equivalent.

Manual Transmission Fluid:

SAE 75W-90 Synthetic Gear Lubricant.

📐 Dimensions

Wheelbase:

104.1 inches (2644 mm)

Length:

175.1 inches (4448 mm)

Width:

72.4 inches (1839 mm)

Height:

70.5 inches (1791 mm)

Curb Weight Min:

3600 lbs (approximate, 2WD I4)

Curb Weight Max:

4100 lbs (approximate, 4WD V6)

Towing Capacity:

Up to 3500 lbs (with V6 and tow package)

Cargo Volume Behind Rear Seat:

38.0 cu ft (1076 liters) (approximate)

Cargo Volume Max:

68.6 cu ft (1942 liters) (approximate, with rear seats folded)

🛡️ Safety Features

NHTSA Front Impact Driver:

Good

NHTSA Front Impact Passenger:

Good

NHTSA Side Impact Front Driver:

Good

NHTSA Side Impact Front Passenger:

Good

NHTSA Side Impact Rear Driver:

Good

NHTSA Side Impact Rear Passenger:

Good

Traction Control:

Available (Traction Control System - TCS)

Electronic Stability:

Available (Electronic Stability Program - ESP)

Airbags Front:

Standard advanced front airbags

Airbags Side:

Optional front-seat mounted side airbags

Seatbelts:

3-point front and rear seat belts with pretensioners

💡 Technology Features

Audio System:

Factory AM/FM/CD player, optional Infinity speaker system, available Sirius satellite radio.

Navigation:

No integrated navigation system offered from the factory on the 2006 model.

Display Screen:

No central infotainment screen; basic radio display.

ABS:

Standard Anti-lock Braking System (ABS) on all wheels.

Cruise Control:

Standard on most trims.

Aux Input:

No standard auxiliary input jack; aftermarket solutions or upgraded head units required.

🔧 Maintenance

Oil Change Interval:

Every 5,000 - 7,500 miles (8,000 - 12,000 km) or 6 months, whichever comes first, depending on driving conditions and oil type.

Tire Rotation:

Every 5,000 - 7,500 miles (8,000 - 12,000 km)

Engine Air Filter Replacement:

Inspect every 15,000 miles (24,000 km), replace as needed or every 30,000 miles (48,000 km).

Cabin Air Filter Replacement:

Inspect every 15,000 miles (24,000 km), replace as needed or every 30,000 miles (48,000 km).

Spark Plug Replacement I4:

Approx. 60,000 miles (96,000 km) - check specific plug type

Spark Plug Replacement V6:

Approx. 100,000 miles (160,000 km) - platinum or iridium plugs

Engine Oil Capacity I4:

4.5 quarts (4.3 liters) with filter (5W-20 recommended)

Engine Oil Capacity V6:

5.0 quarts (4.7 liters) with filter (5W-20 recommended)

Coolant Type:

Mopar Antifreeze/Coolant (HOAT) - Orange color

Coolant Capacity:

Approx. 11.0 quarts (10.4 liters) for V6, slightly less for I4

Brake Fluid:

DOT 3 or DOT 4.

Power Steering Fluid:

Mopar Power Steering Fluid or ATF+4.

Common Complaints 1:

Cracked cylinder heads (especially on early 3.7L V6 models), transmission hard shifting or failure, heater core leaks, front wheel bearing wear, power steering pump issues.

Common Complaints 2:

EVAP system leaks, exhaust manifold cracks (especially on V6), rust issues on the unibody structure in certain climates.

Common Complaints 3:

Water pump failure (often tied to timing belt tensioner on older iterations of the 3.7L, though this model uses a chain), AC compressor clutch failure, electrical shorts in door wiring harnesses.

📚 Vehicle History

Brand Focus:

Jeep, a brand with a long history of producing rugged, go-anywhere vehicles since its origins in World War II.

Kj Generation:

The KJ Liberty was the second generation of the Liberty/Cherokee (XJ in other markets), produced from 2002-2007. It replaced the Cherokee XJ and was positioned below the Grand Cherokee.

Kd Generation Distinction:

The KJ platform was developed in conjunction with Mercedes-Benz, sharing some components with the Mercedes-Benz M-Class (W163) of the same era. This marked a significant engineering collaboration for Chrysler.

Production Period:

2002-2007

Assembly Location:

Toledo, Ohio, USA

🏆 Awards & Recognition

Popular Mechanics Editor Choice:

Recognized as a capable off-road vehicle, though often out-competed by more refined on-road manners.