Segment:
Mid-size Luxury SUV
Target Audience:
Off-road enthusiasts, families, towing needs
Key Competitors:
Ford Explorer, Chevrolet Blazer/TrailBlazer, Toyota 4Runner, Land Rover Discovery
Platform Highlight:
WJ platform known for improved on-road manners and refinement over its predecessor (ZJ)
Powertrain Options:
Robust inline-six and powerful V8 engine choices
Powertrain:
Engine (4.0L I6, 4.7L V8), Transmission (42RE, 45RFE, NV247 transfer case), Drivetrain (NV247, rear differential, front differential)
Chassis:
Suspension (front/rear solid axles, Quadra-Coil), Steering, Brakes (ABS, rear disc)
Electrical:
Wiring diagrams, ECU/PCM, lighting, power accessories, HVAC controls, audio system
Body:
Interior/exterior trim, doors, windows, seats, bumpers, body panels, glass
Diagnostics:
OBD-II diagnostics, DTC (Diagnostic Trouble Codes) interpretation, diagnostic procedures
Maintenance:
Oil changes, fluid checks/replacements, filter replacements, tune-ups, lubrication
Repair:
Engine assembly/disassembly, transmission overhaul, brake system repair, suspension component replacement, electrical system troubleshooting
Diagnostics:
Troubleshooting guides, component testing, electrical schematic interpretation
Replacement:
Component replacement procedures for all major systems
Depth:
Comprehensive (from basic maintenance to full rebuilds and advanced diagnostics)
NHTSA Frontal Driver:
Good
NHTSA Frontal Passenger:
Good
NHTSA Side Impact Driver:
Acceptable
NHTSA Side Impact Rear Passenger:
Acceptable
IIHS Side Impact:
Acceptable
ABS:
Standard (4-wheel disc brakes with ABS)
Airbags:
Driver and front passenger airbags
Rollover Protection:
Off-Road SKI Plate package available (protects underbody)
Audio System:
Available premium audio systems, CD player, cassette player
Navigation:
Optional factory navigation system available on higher trims.
Traction Control:
Available
Electronic Stability Control:
Not available on 2002 model year.
Telematics:
Optional Uconnect/SiriusXM satellite radio became available in later years of the WJ generation, but not standard for 2002.
Oil Change Interval Gas:
Every 5,000-7,500 miles or 6 months, whichever comes first (synthetic recommended)
Transmission Fluid Interval:
Every 30,000-50,000 miles (check manual for specific conditions)
Coolant Interval:
Initial change at 100,000 miles, then every 50,000 miles thereafter (Chrysler HOAT coolant)
Engine Oil Spec:
API SN/SM/SL, SAE 5W-30 (for both 4.0L and 4.7L)
Transmission Fluid Spec:
ATF+4 (for 42RE and 45RFE)
Coolant Spec:
Mopar HOAT (Hybrid Organic Additive Technology) Antifreeze/Coolant
Common Issue 1:
Water pump leaks (especially on 4.7L V8)
Common Issue 2:
Death wobble (often related to steering/suspension component wear, especially track bar)
Common Issue 3:
Cracked cylinder heads on early 4.7L V8 engines
Common Issue 4:
Transmission issues (e.g., solenoid pack failure, torque converter problems)
Common Issue 5:
Front differential issues (e.g., carrier bearing failure)
Jeep Legacy:
Jeep's long history of off-road capability and durable SUVs.
Wj Introduction:
Introduced in 1998 for the 1999 model year, replacing the ZJ Grand Cherokee.
Wj Facelift:
Significant refresh for the 2002 model year, including updated exterior styling, revised interior, and powertrain enhancements (e.g., increased V8 power).
Production Period:
1999-2004
Manufacturing Locations:
Jefferson North Assembly Plant, Detroit, Michigan, USA
