Jeep Commander: Mercedes Transmission?

does a jeep commander have a mercedes transmission

The Jeep Commander is a mid-size SUV that was manufactured from 2005 to 2010 by the Jeep division of the American manufacturer Chrysler. The Jeep Commander was offered with three different four-wheel-drive systems: Quadra-Trac I, Quadra-Trac II, and Quadra-Drive II. The transmission type depends on the engine. The 3.7L engine comes with the NAG1 (W5A580) transmission, while the 4.7L and 5.7L engines are fitted with the 45RFE transmission. The NAG1 transmission is a Mercedes transmission, while the 45RFE is a Jeep-designed unit also used in the Grand Cherokee.

Characteristics Values
Jeep Commander type XK and XH (diesel-powered export version)
Manufacturer Jeep division of the American manufacturer Chrysler
Manufactured 2005-2010
Engine 3.7 L V6, 4.7 L V8, 5.7 L HEMI V8
Transmission 545RFE or NAG1 (W5A580)
Transmission type by engine 3.7 L: NAG1 (W5A580), 4.7 L and 5.7 L: 545RFE

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The W5A580 (NAG1) transmission is used with the 3.0 CRD, 3.7 gas engines and SRT

The W5A580 (NAG1) transmission is used with the 3.0 CRD, 3.7 gas engines, and SRT. The NAG1 is an electronically controlled 5-speed transmission system with a lock-up clutch in the torque converter. The NAG1 transmission was used in several Chrysler products, including the Jeep Commander, Grand Cherokee, Wrangler, and Liberty.

The Jeep Commander, a mid-size SUV, was manufactured from 2005 to 2010 by the Jeep division of the American manufacturer Chrysler. The Commander was offered with three different four-wheel-drive systems: Quadra-Trac I, Quadra-Trac II, and Quadra-Drive II. The specific transmission used in a Commander depends on the engine and model. The 3.7 L engine was available with the Quadra-Trac I system, a full-time system requiring no driver input. The Quadra-Trac II system, also full-time and adding a low range and neutral towing position, was available on models with a V8 engine. The Quadra-Drive II system added electronic limited-slip differentials to the front and rear axles.

The NAG1 transmission is part of a family of transmissions, denoted by the acronym NAG1, which stands for "New," "Automatic," "Gearbox," and "generation 1." The W in W5A580 stands for "transmission using a hydraulic torque converter," the 5 for "5 forward gears," the A for "automatic transmission," and the 580 for "maximum input torque capacity in Newton meters." The NAG1 transmission was first launched in 2003 by Mercedes and was used in many Chrysler products, including the Jeep Commander with the 3.7L engine.

The NAG1 transmission has several advantages over previous Chrysler automatics. It is more efficient than the four-speed automatic used with lesser LX-car engines, and compared to Chrysler's own five-speed rear-drive automatic, the 545RFE, it has a wider gear range, a considerably smaller size, and lower weight. The NAG1 transmission is also associated with several benefits, including increased gas mileage, increased service life, increased shift control, reduced maintenance costs, and enhanced step-ups through the five gears.

Despite these advantages and benefits, the NAG1 transmission has had some problems. It is extremely sensitive to fluid quality and can shudder badly when the torque converter clutch is applied with even a 0.5% water dose. There have also been issues with the transmission filler tube o-ring leaking. Chrysler eventually discontinued the use of this transmission in its products due to its use of electronic controls, which were linked to a short lifespan.

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The 45RFE transmission is used with the 4.7 and 5.7L engines

The 45RFE transmission is a reliable and popular choice for these vehicles, offering a combination of performance and efficiency. It is known for its smooth shifting and robust design, making it suitable for both on-road and off-road driving conditions.

In terms of its technical specifications, the 45RFE features four gears in its applications. It utilizes three planetary gearsets, which is one more than what is typically found in a 4-speed automatic transmission. This additional gearset enhances the transmission's versatility and performance.

The 45RFE also incorporates multiple disc clutches, with three input clutches and three holding clutches. This design ensures optimal torque transfer and smooth transitions between gears. Additionally, the dual internal filter system contributes to the transmission's overall reliability by maintaining proper fluid conditions and promoting longevity.

The 45RFE transmission has a strong following among Jeep and Dodge enthusiasts. Its use in various models, including the Jeep Commander, showcases its adaptability and durability. For those seeking a combination of performance, reliability, and off-road capability, the 45RFE transmission paired with the 4.7 or 5.7L engines is a popular choice.

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The 3.7L engine does not come with 545RFE but with NAG1

The Jeep Commander is a mid-size SUV that was manufactured from 2005 to 2010 by the Jeep division of the American manufacturer Chrysler. It was developed to target consumers who wanted a three-row SUV, but it was designed to be only two inches longer than the Jeep Grand Cherokee. The Jeep Commander was offered with three different four-wheel-drive systems: Quadra-Trac I, Quadra-Trac II, and Quadra-Drive II.

The 3.7L engine, which was available in the Base/Sport and 65th Anniversary Edition models of the Jeep Commander, does not come with the 545RFE transmission. Instead, it is equipped with the NAG1 transmission, specifically the W5A580 variant. The NAG1 transmission is a Mercedes-Benz transmission and is also used with the 3.0 CRD and SRT models. The 545RFE transmission, on the other hand, is fitted to the 4.7L and 5.7L engines of the Jeep Commander.

The NAG1 transmission is known to be quite reliable, with some owners reporting no issues even after high mileage. However, it is important to note that the NAG1 transmission does not have a low gear, which may be a consideration for some off-road enthusiasts. The 545RFE transmission, being a Jeep-designed unit, is also a reliable option and offers a low-range gear for towing.

In terms of gear ratios, the NAG1 transmission has lower gear ratios compared to the 545RFE, providing approximately 20% more torque in first gear. This can result in improved acceleration and reduced 60-foot times. On the other hand, the 545RFE transmission has a higher overdrive (OD) ratio, allowing for a lower RPM while driving at higher speeds.

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The 3.7L engine comes with Quadra-Trac I

The Jeep Commander is a mid-size SUV that was manufactured from 2005 to 2010 by the Jeep division of the American manufacturer Chrysler. It was designed to target consumers who wanted a three-row SUV, but with a body only two inches longer than the Jeep Grand Cherokee. The Jeep Commander came in two versions: the XK and the XH, the latter being a diesel-powered export version.

The Jeep Commander 3.7L engine is a V6 engine with a cast-iron block and aluminium cylinder heads. This engine was used in various Chrysler vehicles, including the Jeep Cherokee, Grand Cherokee, Liberty, and Commander. It produces 210 horsepower and 235 lb-ft of torque, which some owners have claimed is underpowered for heavier vehicles. The engine is known for its long-term reliability, although it has a few common issues to look out for.

Now, let's focus on the Jeep Commander's 3.7L engine and its Quadra-Trac I system. Quadra-Trac I is a single-speed, full-time all-wheel-drive (AWD) system that requires no driver input to engage. It is always in operation and is designed for everyday use. The system is rear-wheel biased, sending 48% of engine power to the front axle and 52% to the rear axle. This front-to-rear ratio remains constant regardless of driving conditions.

Quadra-Trac I uses open differentials to channel power between the right and left wheels as needed. The traction control system governs these differentials, working in conjunction with the vehicle's brakes to prevent wheel slippage. If a wheel loses grip, the system applies the brakes to that wheel, redistributing engine torque to the other three wheels. This helps maintain traction and stability on various surfaces, such as dry, wet, or icy pavement.

The Jeep Commander, equipped with the 3.7L engine and the Quadra-Trac I system, offers a capable and straightforward all-wheel-drive setup. It is well-suited for daily driving and provides a good balance of performance and traction without requiring any input from the driver. While it may not be as advanced as other 4WD systems, Quadra-Trac I is a reliable choice for those who want the security of all-wheel drive without the complexity of more sophisticated setups.

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The V8 engines have a Mopar 5-speed transmission

The Jeep Commander is a mid-size SUV that was manufactured from 2005 to 2010 by the Jeep division of the American manufacturer Chrysler. The Jeep Commander was offered with three different four-wheel-drive systems: Quadra-Trac I, Quadra-Trac II, and Quadra-Drive II.

The V8 engines in the Jeep Commander have a Mopar 5-speed transmission. This is seen in the 2006 Jeep Commander Limited 4.7L V8, which has a Mopar 5-speed automatic transmission. The 2007 Jeep Commander Base 4.7L V8 also has a Mopar 5-speed automatic transmission.

The Mopar 5-speed transmission is also found in other Jeep Commander models with different engines. The 2006 and 2007 Jeep Commander with the 3.7L six-cylinder engine has the Mopar 5-speed automatic transmission. Additionally, the 2007 Jeep Commander with the 5.7L eight-cylinder engine is equipped with the Mopar 5-speed automatic transmission.

The Mopar 5-speed transmission provides smooth and efficient gear shifts for the powerful V8 engine in the Jeep Commander, ensuring a comfortable and responsive driving experience.

Frequently asked questions

The Jeep Commander with a 3.7L six-cylinder engine has the Mercedes automatic transmission. The Jeep Commander with a V8 engine has a Mopar 5-speed transmission.

The 4.7L Commander QT-II has the 545RFE transmission.

You can refer to the service bulletin to determine the type of transmission in your Jeep Commander.

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