Transfer case (NVG/Rock-Trac/Command-Trac), front and rear drive shafts, differentials, axle assemblies (Dana 30, Dana 44), axle shafts, U-joints.
Suspension:
Front and rear suspension systems (coil springs, multi-link solid axle, independent front suspension for JL), shock absorbers, control arms, sway bars, bushings.
Steering:
Power steering system, steering gear, steering column, tie rods, drag links, steering stabilizer.
Brakes:
Front and rear brake systems (disc/disc), ABS, traction control, brake calipers, rotors, pads, lines, master cylinder, brake booster, parking brake.
Varies by model year and configuration, often 3 or 4 stars for 2-door, 4 stars for 4-door (check specific year).
Active Features
ABS:
Standard Anti-lock Braking System
Traction Control:
Standard Traction Control System (TCS)
Esc:
Standard Electronic Stability Control (ESC) - introduced with JK generation
Hill Start Assist:
Available on later models (JK/JL)
Passive Features
Airbags:
Front airbags, side curtain airbags (available/standard depending on year/trim)
Seat Belts:
3-point seat belts with pretensioners
💡 Technology Features
Infotainment
Infotainment Systems Jk:
Uconnect systems with touchscreens (5", 6.5", 8.4" depending on year/trim), SiriusXM Satellite Radio, optional Navigation.
Infotainment Systems Jl:
Updated Uconnect systems (7", 8.4") with Apple CarPlay and Android Auto integration, SiriusXM Traffic and Travel Link.
Driver Assistance
Driver Assistance Features:
Available features include Blind-Spot Monitoring, Rear Cross-Path Detection, ParkView Rear Back-Up Camera, Forward Collision Warning (late models), Adaptive Cruise Control (late models).
Connectivity
Connectivity Options:
Bluetooth connectivity for hands-free calling and audio streaming, USB ports, available Wi-Fi Hotspot (JL).
🔧 Maintenance
Service Intervals
Oil Change Interval:
Every 7,500 to 10,000 miles (12,000 to 16,000 km) or 6-12 months, depending on driving conditions and oil type used (refer to manual for specific engine).
Tire Rotation Interval:
Every 7,500 miles (12,000 km) or as part of oil change.
Transmission Fluid Change Manual:
Inspect every 30,000 miles (48,000 km); change as needed or every 60,000-100,000 miles (96,000-160,000 km) depending on usage.
Transmission Fluid Change Automatic:
Inspect every 30,000 miles (48,000 km); change typically every 60,000 miles (96,000 km) for normal use, or sooner for severe use (towing, off-roading).
Fluid Specifications
Engine Oil 4.0L I6:
SAE 10W-30 API SG or higher
Engine Oil 3.6L Pentastar:
SAE 0W-20 API SN or SP, MS-6395
Engine Oil 2.0L Turbo:
SAE 0W-20 API SP, MS-13375
Coolant:
Mopar OAT (Organic Additive Technology) HOAT antifreeze (MS-9769) or equivalent, 50/50 mix with distilled water.
Brake Fluid:
DOT 3 or DOT 4 compatible brake fluid
Transfer Case Fluid:
Mopar NV241G Heavy Duty Lubricant or equivalent (check specific transfer case type)
Axle Differential Fluid:
SAE 75W-90 GL-5 gear oil. Friction modifier (Mopar LS additive or equivalent) required for limited-slip differentials.
Known Issues
Death Wobble Jk:
A common term for severe steering shimmy, often related to worn steering and suspension components (track bar, ball joints, tie rods, steering damper).
Oil Cooler Leaks Pentastar:
Potential for oil leaks from the oil filter housing and cooler assembly on Pentastar V6 engines.
Evaporator Case Leaks:
Water leaking into the cabin from the HVAC evaporator case, often due to clogged drain tubes.
Clutch Release Bearing Nsg370:
Some manual transmissions can experience noise from the clutch release bearing.
📚 Vehicle History
Brand Heritage
Jeep Origin:
Roots in military vehicles (Willys MB) during World War II, renowned for ruggedness and off-road capability.
Model Evolution
Tj Wrangler:
1997-2006. Introduced coil springs for a more comfortable ride, retained solid axles. Key features included the 4.0L inline-6 engine.
Jk Wrangler:
2007-2018. Major redesign. Introduced a unibody construction for the JK (though still considered body-on-frame by many), 4-door Unlimited model, modern amenities, and electronic stability/traction control. Engine options changed over its lifespan.
Jl Wrangler:
2018-Present. Further evolution. Lighter materials, more aerodynamic design, new engine options (2.0L Turbo, 3.0L EcoDiesel, 4xe Plug-in Hybrid), available independent front suspension (4xe models), and updated technology.
Production
Manufacturing Location:
Toledo, Ohio, USA
🏆 Awards & Recognition
Recognitions
Off Road Awards:
Consistently recognized for off-road capability by automotive publications and enthusiast groups.
Segment Awards:
Often cited as a leader in its class for capability and iconic status.