Segment:
Mid-size/Full-size Luxury SUV
Target Audience:
Families, off-road enthusiasts, towing users, general SUV buyers seeking comfort and capability.
Key Competitors 2005-2008:
Ford Explorer, Toyota 4Runner, Chevrolet TrailBlazer, Nissan Pathfinder, Land Rover LR3/Discovery.
Platform Basis:
WK platform, shared with Mercedes-Benz M-Class (W164) and R-Class during DaimlerChrysler era, offering robust construction and refined ride.
Engine Options:
Versatile engine lineup including efficient V6, strong V8, powerful HEMI V8, and torquey CRD diesel, catering to diverse performance and economy needs.
Capability:
Renowned Jeep off-road capability (especially with 4WD systems like Quadra-Trac II and Quadra-Drive II), strong towing capacity, comfortable on-road manners.
Interior:
Spacious and comfortable interior, offering premium materials and available luxury features, a significant upgrade from previous generations.
Engine Mechanical:
Engine assembly, disassembly, rebuilding, cooling systems, lubrication systems, fuel delivery, emissions controls, cylinder head, block, crankshaft, pistons, connecting rods, camshafts, valves.
Engine Performance:
Ignition system, fuel injection system (MPI), turbocharger (for CRD diesel), engine control module (ECM) diagnostics, troubleshooting.
Transmission:
Automatic transmission (e.g., W5A580 for V8, NAG1 for CRD, 45RFE/545RFE for 3.7/4.7), manual transmission (if applicable), transfer case operation and repair, drive shafts, differentials, axle assemblies, gearbox and driveline components.
Brakes:
Hydraulic brake system, ABS, traction control, electronic stability program (ESP), parking brake, brake pads, rotors, calipers, master cylinder, brake lines, bleeding procedures.
Suspension And Steering:
Front and rear suspension (independent front suspension, multi-link rear), springs, shock absorbers, control arms, ball joints, bushings, power steering system, steering rack, tie rods, wheel alignment specifications.
Electrical System:
Battery, charging system (alternator), starting system (starter motor), lighting (headlights, taillights, interior), fuses, relays, wiring diagrams, multiplexed systems, body control module (BCM), power distribution.
HVAC:
Heating, ventilation, and air conditioning (HVAC) system, refrigerant recharge, compressor, condenser, evaporator, blower motor, climate control module, ducting.
Body And Chassis:
Body structure, panels, doors, windows, locks, interior trim, exterior trim, bumpers, underbody protection, corrosion protection.
Restraint Systems:
Airbag system, seat belts, SRS module, occupant restraint sensors.
Diagnostic Troubleshooting:
OBD-II diagnostic trouble codes (DTCs), symptom-based diagnostics, component testing, diagnostic tools and procedures.
Preventative Maintenance:
Scheduled maintenance intervals, fluid checks and changes, filter replacements, lubrication points.
Routine Repairs:
Brake pad replacement, fluid flushes, filter changes, belt replacement, spark plug replacement, bulb replacement.
Major Repairs:
Engine overhaul, transmission rebuild, suspension component replacement, steering system repair, brake system overhaul.
Electrical Diagnostics:
Troubleshooting wiring issues, component testing using multimeter and scope, interpreting wiring diagrams.
Bodywork And Trim:
Removal and installation of body panels, interior trim components, door hardware, glass replacement.
Depth:
Comprehensive factory-level detail, suitable for professional technicians and advanced DIY enthusiasts.
Diagnostic Tools:
Covers use of specialized diagnostic tools and procedures required for advanced system diagnostics.
Torque Specifications:
Includes precise torque values for all fasteners and critical components.
Clearances:
Provides specifications for all critical mechanical clearances (e.g., piston ring gap, bearing clearances).
Wiring Diagrams:
Detailed, high-resolution wiring schematics for all vehicle systems.
Engine 3.7L V6:
3.7L SOHC V6 (PowerTech), Approx. 210-215 hp @ 5200 rpm, Approx. 235-245 lb-ft @ 4000 rpm. Known for reliability and decent fuel economy.
Engine 4.7L V8:
4.7L SOHC V8 (PowerTech), Approx. 235-255 hp @ 5000-5200 rpm, Approx. 290-325 lb-ft @ 3200-3500 rpm. Good balance of power and refinement.
Engine 5.7L V8 Hemi:
5.7L OHV V8 HEMI (Multi-Displacement System - MDS), Approx. 325-350 hp @ 5000-5200 rpm, Approx. 370-390 lb-ft @ 4000-4200 rpm. Offers significant power and improved fuel efficiency through cylinder deactivation.
Engine 3.0L Crd Diesel:
3.0L V6 CRD Turbo Diesel (Mercedes-Benz OM642), Approx. 215-224 hp @ 4000 rpm, Approx. 375-400 lb-ft @ 1600-2400 rpm. Excellent torque for towing and fuel economy, but requires specific diesel maintenance.
Horsepower Range:
210 hp to 350 hp (depending on engine)
Torque Range:
235 lb-ft to 400 lb-ft (depending on engine)
Gasoline Engines:
Electronic Multi-Point Fuel Injection (MPI)
Diesel Engine:
Common Rail Direct Injection (CRDI), Turbocharged
Wheelbase:
Approx. 116.1 inches (2950 mm)
Length:
Approx. 189.8 inches (4820 mm)
Width:
Approx. 74.9 inches (1903 mm)
Height:
Approx. 69.4 inches (1763 mm)
Passenger Volume:
Approx. 105.4 cu ft (2984 L)
Cargo Volume Behind 2Nd Row:
Approx. 32.5 cu ft (920 L)
Cargo Volume Max:
Approx. 77.0 cu ft (2180 L)
Curb Weight Range:
Approx. 4,500 - 5,000 lbs (2041 - 2268 kg), varies by engine and drivetrain
Towing Capacity:
Up to 7,400 lbs (3357 kg) with proper equipment and engine configuration (typically 5.7L HEMI or 3.0L CRD)
NHTSA Front Impact Driver:
5 Stars (for 2006-2007 models)
NHTSA Front Impact Passenger:
5 Stars (for 2006-2007 models)
NHTSA Side Impact Front Seat:
5 Stars (for 2006-2007 models)
NHTSA Side Impact Rear Seat:
5 Stars (for 2006-2007 models)
IIHS Frontal Offset:
Good (for 2006-2007 models)
IIHS Side Impact:
Good (for 2006-2007 models)
Active Safety Features:
Anti-lock Braking System (ABS), Traction Control System (TCS), Electronic Stability Program (ESP), Hill Descent Control (HDC) on select models.
Passive Safety Features:
Advanced multi-stage front airbags, front side-impact airbags, available full-length side-curtain airbags, active head restraints, front and rear crumple zones.
Oil Change Interval:
Every 6,000 miles (9,600 km) or 6 months (whichever comes first) for gasoline engines, using synthetic blend oil. Diesel may differ slightly, consult manual.
Air Filter Replacement:
Every 15,000 miles (24,000 km) or as needed based on driving conditions.
Transmission Fluid Service:
Every 30,000-60,000 miles (48,000-96,000 km), depending on driving conditions (e.g., towing). Specific fluid type is critical.
Coolant Flush:
Every 30,000-100,000 miles (48,000-160,000 km) or 5 years, depending on coolant type. Check manual for specific type and interval.
Engine Oil Gasoline:
SAE 5W-20 or 5W-30 synthetic blend (check owner's manual for specific engine and temperature range requirements).
Engine Oil Diesel:
API CJ-4 or CK-4 specification, SAE 5W-40 or 15W-40 diesel engine oil (check owner's manual for precise specification).
Transmission Fluid:
ATF+4 (MS-9602) for gasoline engines. MB Spec 236.10 or equivalent for the W5A580 (5.7L HEMI and 3.0L CRD). CRD requires specific MB-spec fluid.
Coolant:
Mopar HOAT (Hybrid Organic Acid Technology) antifreeze, typically purple or pink. Check manual for specific type.
Common Problems 3.7L V6:
Valve spring issues, occasional head gasket leaks, spark plug ejection (early models), camshaft/lifter noise.
Common Problems 4.7L V8:
Head gasket failures (especially early designs), valve stem seal wear, occasional transmission issues (e.g., torque converter clutch).
Common Problems 5.7L Hemi:
Multi-Displacement System (MDS) issues (e.g., oil consumption, lifter noise), exhaust manifold cracks, occasional transmission issues.
Common Problems 3.0L Crd Diesel:
Diesel Particulate Filter (DPF) clogging, EGR valve issues, injector seal leaks, glow plug failures, turbocharger issues, potential for oil cooler leaks.
General Wk Issues:
Front suspension wear (ball joints, control arm bushings), power steering pump noise/leaks, HVAC blower motor failures, electronic module issues (e.g., TIPM), water intrusion in cabin (rear hatch seals).
