Jeep 4×4 Systems Explained
Jeep has always been a leader when it comes to the industry-leading Jeep 4×4 systems. This year, Jeep offers 13 different 4×4 systems, optional and standard varying from model to model. Read more below in Jeep 4×4 Systems Explained. Stop in and test drive one today to learn more about the unsurpassed 4×4 systems that Jeep has to offer.
Active Drive 4×4
Available in the Jeep Renegade Sport, Latitude and Limited, the Jeep Active Drive 4×4 system provides improved efficiency with a rear axle disconnect. This system engages only as needed for maximum fuel efficiency and added traction when needed. The Selec-Terrain system allows the driver to choose four distinct modes, Auto, Snow, Sand and Mud. The system also includes a standard Brake Lock Differential. The BLD provides superior traction and response in harsh on and off-road environments.
Active Drive 4×4 Low
Standard exclusively in the Jeep Renegade Trailhawk, Active Drive 4×4 Low provides all of the features of Active Drive, with the added low-range gear. 4WD Low mode provides added traction in low-speed situations such as crawling over large rocks or pulling a boat trailer out of water. The Active Drive 4×4 low system provides a 20:1 crawl ratio, with a much more controlled throttle response. With Active Drive 4×4 Low, the driver’s Selec-Terrain system adds the Rock feature for the most harsh rock-crawling trails.
Active Drive I 4×4
The Jeep Active Drive I system is almost identical to the Active Drive 4×4 system in the Renegade. This system, built for the Cherokee Sport, Latitude and Limited, includes rear axle disconnect, maximizing fuel efficiency and only connecting for added traction as needed. This is one of the most popular Jeep 4×4 Systems the brand has to offer.
Active Drive II 4×4
Similar to the Renegade’s Active Drive 4×4 Low system, the Active Drive II add’s the low range capability to the Cherokee Latitude, Limited and Overland. The Cherokee’s system, however, almost triples the crawl ratio at 56:1 for unbelievable traction and throttle response in low-speed settings. The Selec-Terrain system still includes Auto, Snow, Sport, Sand/Mud modes.
Active Drive Lock 4×4
The Cherokee Trailhawk comes standard with the Active Drive Lock 4×4 system. The only difference between this and Active Drive II 4×4 is the mechanical rear axle lock, and the fact that the Active Drive Lock 4×4 is trail rated. It boasts the same 56:1 crawl ratio, as well as added Rock mode to the Selec-Terrain system.
Standard in both the Wrangler Rubicon and Wrangler Unlimited Rubicon, the Rock-Trac 4×4 system is a favorite among off-road enthusiasts. The system comes with a 4:1 low gearr ratio in the transfer case, with Tru-Lok electronic locking differentials. In addition, the system has electronic front sway bar disconnect, allowing the Jeep to stay level in extreme off-road terrain. The Rock-Trac system is one that could bring a Jeep to the top of a mountain!
In all Wrangler and Wrangler Unlimited Sport, Sport S and Sahara, the Command-Trac 4×4 system uses a NV241 GII transfer case that helps retain traction in slippery or off-road conditions. The Command-Trac shifts on-the-fly with a 2.72:1 low range. This ratio is perfect for flat towing or rock crawling with the Wrangler. Jeep’s website says about the system, “A Wrangler with a Command-Trac 4×4 System is purpose-built for fun and the freedom to go wherever adventure leads.”
Quadra-Drive II 4×4 with Rear ELSD
Standard in the Grand Cherokee Trailhawk, and available in the Summit, Overland and Limited, the Quadra-Drive II 4×4 system with Electronic Limited Slip Differential provides unmatched traction in all weather and off-road situations. The system quickly adapts in Auto mode with the Selec-Terrain system to different conditions such as Snow, Sand/Mud or Rock. In addition, the Quadra-Lift Air Suspension can raise or lower the vehicle at the push of a button for increased ground clearance and off-road capability, or lower for better handling and aerodynamics.
Quadra-Trac I 4×4
The Quadra-Trac I 4×4 system comes available in the Grand Cherokee Laredo and Altitude trim levels. This system is seamless in that it has no buttons and automatically engages in situations where 4×4 is needed. Whether the roads are wet or icy, or the beach is loaded with soft sand, the Quadra-Trac I system will jump into action with no driver action needed.
Quadra-Trac SRT 4×4
The Quadra-Trac SRT 4×4 system is the standard full-time 4×4 system in the Grand Cherokee SRT. Jeep boasts this system which includes the “strongest t-case ever designed by the Jeep brand”, claiming it to handle massive amounts of horsepower and torque produced by the SRT’s 6.4L v8. The system has a massive “wet” clutch and ELSD in the rear, allowing 100% of the torque to be pushed to a single rear wheel. The Selec-Trac System also allows for managing torque split and suspension damping, maximizing traction in the beastly SRT.
Quadra-Trac II 4×4
Similar to the Quadra-Trac I, the II provides a two-speed transfer case that immediately adjust for slippage of a wheel. Available in the Grand Cherokee Laredo, Limited, Overland and Summit, as much as 100% of available torque can be instantly shifted to the axle with most traction. The major difference between this and the QT1 is that the II has Selec-terrain with Sport, Snow, Sand/Mud and Rock modes.
Freedom Drive I 4×4
Similar to the Quadra-Trac I 4×4 system, the Freedom Drive II system automatically adjusts when extra traction is needed. Power is shifted to the rear wheels when the system senses wheel slippage. This system is ready for all weather situations and is available in all trim levels of the Compass and Patriot.
Freedom Drive II 4×4
The Freedom Drive II 4×4 system is available in Compass and Patriot in both Sport and Latitude trim levels. This system automatically reacts to slippage similar to the FDI, but it comes with a CVT2L transmission. This transmission includes off-road mode and a 19:! crawl ratio for maximized torque in steep or crawling off-road situations.