Jeep Commander: Quatra Drive Standard

do all the jeep commanders have quadra drive

Jeep Commanders are available with a variety of four-wheel-drive systems, including Quadra-Trac I, Quadra-Trac II, and Quadra-Drive II. Quadra-Drive II is the most advanced system, with electronically controlled limited-slip differentials in the front and rear axles, allowing it to send 100% of the engine torque to any wheel that has traction. Quadra-Trac II, on the other hand, can only send power to either the front or rear axle, but not to specific tires. Quadra-Trac I does not have a low range.

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Differences between Quadra-Drive and Quadra-Trac

The Jeep Grand Cherokee comes with three four-wheel-drive (4WD) systems: Quadra-Trac I, Quadra-Trac II, and Quadra-Drive II. Each system is designed for different levels of capability when off-roading.

Quadra-Trac I

Quadra-Trac I is a single-speed, full-time all-wheel-drive (AWD) system that does not require any input from the driver to engage. It is always in operation and is rear-wheel biased, sending 48% of engine power to the front axle and 52% to the rear. This front-to-rear ratio is constant, regardless of driving conditions. The system uses open differentials to channel power between the right and left wheels as needed, and the traction control system governs the differentials, working with the vehicle's brakes to prevent wheel slippage. Quadra-Trac I does not have a low-range mode for more challenging terrain.

Quadra-Trac II

Quadra-Trac II is the more advanced version of Quadra-Trac I. It has a two-speed transfer case and uses a more sophisticated transfer case with an electronically controlled clutch pack paired with the center differential. This setup allows the system to automatically send up to 100% of engine power to either axle, depending on traction needs. Quadra-Trac II also has a driver-selectable low-range mode for challenging terrain and weather conditions, giving the vehicle extra ability and confidence over uneven surfaces. However, it is not ideal for extreme off-roading or ice driving.

Quadra-Drive II

Quadra-Drive II is the most advanced 4WD system offered by Jeep. It uses the same transfer case as Quadra-Trac II but adds electronically operated limited-slip differentials to both the front and rear axles. This configuration allows Quadra-Drive II to move up to 100% of engine power to a single wheel. It can proactively and predictively reallocate power to compensate for lost traction and includes a low-range gearing mode and hill-descent control for better performance on varying terrain.

In summary, the main differences between Quadra-Trac I, Quadra-Trac II, and Quadra-Drive II lie in their level of sophistication, driver input requirements, and off-road capabilities. Quadra-Trac I is a basic, always-on system with no low-range mode, while Quadra-Trac II offers more advanced features and the ability to handle mild off-roading. Quadra-Drive II, the most advanced system, provides the greatest off-road prowess and can proactively adjust power distribution to maintain traction.

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How to identify which drive system a Commander has

To identify which drive system a Jeep Commander has, you can look for the following:

  • A badge or plaque on the centre console, below the shifter, that says 'Quadra Drive II'. This indicates that the Commander has the Quadra Drive II system.
  • A badge on the driver's side front fender that says 'Trail Rated'. This indicates that the Commander has either the Quadra Trac I or Quadra Trac II system.
  • A chrome "T" handle to the right of the shifter, in the indent storage pocket on the console at the rear. This indicates that the Commander has the Quadra-Trac II system.
  • No chrome "T" handle. This indicates that the Commander has the Quadra-Trac I system.
  • A silver lever on the console, next to the shifter. This indicates that the Commander has the Quadra-Trac I system.
  • No silver lever on the console, next to the shifter. This indicates that the Commander has the Quadra-Trac II system.
  • A small placard below the shifter that says 'Quadra Drive II'. This, in combination with the chrome "T" handle, indicates that the Commander has the Quadra-Drive II system.
  • No placard below the shifter. This, in combination with the chrome "T" handle, indicates that the Commander has the Quadra-Trac II system.

You can also use the VIN number to look up the Jeep Commander's build sheet on the Jeep website, which will tell you all the equipment and options.

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Quadra-Trac vs Quadra-Drive for off-roading

Jeep offers a variety of four-wheel-drive systems, including Quadra-Trac I, Quadra-Trac II, and Quadra-Drive II. Each system is designed to handle different levels of off-roading capability and driving conditions.

Quadra-Trac I

Quadra-Trac I is a single-speed, full-time all-wheel-drive (AWD) system that requires no driver intervention. It is always engaged and distributes 48% of the engine's torque to the front axle and 52% to the rear axle. This front-to-rear ratio remains constant regardless of driving conditions. The system uses open differentials and traction control to channel power between the wheels, preventing wheel slippage. While Quadra-Trac I is suitable for everyday driving, it lacks a low-range mode for more challenging terrain.

Quadra-Trac II

Quadra-Trac II is an advanced version of Quadra-Trac I, featuring a more sophisticated transfer case with an electronically controlled clutch pack. This system can automatically send up to 100% of engine power to either axle, depending on traction needs. It also includes a driver-selectable low-range mode for tackling more challenging terrain and weather conditions. However, it may not be ideal for extreme off-roading or ice driving.

Quadra-Drive II

Quadra-Drive II is Jeep's top-of-the-line four-wheel-drive system. It builds upon the transfer case of Quadra-Trac II but adds electronically operated limited-slip differentials to both axles. This configuration allows Quadra-Drive II to send up to 100% of engine power to a single wheel, providing superior traction and handling in off-road conditions. It also includes a low-range gearing mode and hill-descent control for enhanced off-road performance.

In summary, the choice between Quadra-Trac and Quadra-Drive for off-roading depends on the specific needs and driving conditions. Quadra-Trac I is suitable for occasional off-road use and everyday driving, while Quadra-Trac II offers more capability for adventurous off-roading and wintry conditions. For those seeking to tackle extreme off-road environments, Quadra-Drive II provides the highest level of performance and traction.

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Quadra-Drive II vs Quadra-Trac II

Quadra-Trac II and Quadra-Drive II are both four-wheel-drive systems offered by Jeep for their Grand Cherokee models. While they share some similarities, there are also some key differences between the two systems.

Quadra-Trac II

Quadra-Trac II is the more advanced version of Quadra-Trac I, offering improved off-road capabilities. It features a two-speed transfer case with an electronically controlled clutch pack paired with the center differential. This setup allows the system to automatically send up to 100% of engine power to either the front or rear axle, depending on traction needs. Quadra-Trac II also has a driver-selectable low-range mode for tackling more challenging terrain and weather conditions. The system utilizes sensors to detect wheel slip and shift power accordingly. Additionally, it includes a neutral range, allowing the vehicle to be towed on all four wheels.

Quadra-Drive II

Quadra-Drive II takes the capabilities of Quadra-Trac II even further. While it uses the same transfer case as Quadra-Trac II, Quadra-Drive II adds electronically operated limited-slip differentials to both the front and rear axles. This configuration enables the system to send up to 100% of engine power to a single wheel. It can move power left or right to the corner with the most grip, providing superior traction in challenging conditions. Quadra-Drive II also has a low-range gearing mode and hill-descent control for enhanced off-road performance. Unlike Quadra-Trac II, it does not rely on the braking system to combat wheel slip but instead proactively reallocates power to compensate for lost traction.

In summary, both Quadra-Trac II and Quadra-Drive II offer advanced four-wheel-drive capabilities for the Jeep Grand Cherokee. Quadra-Trac II provides a more sophisticated transfer case and improved off-road performance over the base Quadra-Trac I system. Quadra-Drive II takes it a step further by adding limited-slip differentials, enabling it to send power to the wheel with the most traction. This makes Quadra-Drive II the most capable system for extreme off-road situations.

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Quadra-Drive II and lockers

Quadra-Drive II is a four-wheel-drive system used in some Jeep vehicles. It uses the New Venture Gear NV245 transfer case, which has a centre differential that allows power to be supplied to the front and rear axles without driveline binding, even on dry pavement. The torque distribution under normal driving conditions is 48% front and 52% rear.

The system also includes front and rear axles with electronic limited-slip differentials or ELSDs. These automatically transfer torque to any wheel with traction within milliseconds. This means that if three tyres are slipping, all the power will be sent to the one tyre that has traction.

The Jeep Commander is always in 4-Hi unless 4-Lo is activated. 4-Lo should only be used off-road or in slippery conditions when you need to drive at lower speeds. In 4-Lo, the front and rear axles are locked together, and the vehicle can only crawl along at a slow speed.

Some drivers prefer to install aftermarket locking differentials or 'lockers' in their vehicles. However, this is not possible with the Quadra-Drive II system, as the ELSDs sit in the place of a locker. In addition, the electronically controlled clutch packs in the Quadra-Drive II system may try to send torque to a single wheel when you have mechanically locked the axle, which could result in damage.

Frequently asked questions

No, Jeep Commanders have either Quadra Drive II or Quadra Track I or II.

You can check for a badge on the console below the shifter that says Quadra Drive II. If there is no badge, then it has either Quadra Track I or II. You can also check the rear differential case — Quadra Drive II has 12 bolts, while Quadra Track II has 10.

Quadra Drive II has electronically controlled limited-slip differentials in all three (front, rear, and center). Quadra Track II has open differentials in the front and rear, and a center differential that is open in 4WD Hi Full-Time mode and locked in 4WD Hi Part-Time and 4WD Low modes.

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