2009 Jeep Patriot 4x4 problems
The Jeep Patriot (MK74) is a front-engine five-door compact crossover SUV manufactured and marketed by Jeep, having debuted with the Jeep Compass in April 2006 at the New York Auto Show for the 2007 model year. Both cars, as well as Dodge Caliber shared the GS platform, differentiated by their styling and marketing, with the Patriot exclusively offering a four-wheel drive system, marketed as Freedom Drive II.
The Patriot was manufactured at Chrysler's Belvidere, Illinois assembly plant alongside the Compass. Although the model was still selling well even as it was essentially unchanged as it entered its 11th model year, production ended with the 2017 model year.
Design
In the U.S. the Patriot uses either the 2.0 L or 2.4 L World gasoline I4 engine. Both front-wheel drive and four-wheel drive are available. The Patriot features two four-wheel drive systems both of which are electronically controlled.
The standard four-wheel drive system is called Freedom Drive I. This is a full-time Automatic 4WD that directly drives the front differential carrier from the transmission output and is exclusively front-wheel drive whenever 4WD is not commanded by the powertrain control module or the driver. The transaxle supplies power to the rear drive unit via a driveshaft that is in constant mesh with the front carrier. The driveshaft joins the front transaxle through a small, fixed ratio gearbox which Jeep refers to as the Power Transfer Unit.The driveshaft is suspended by a centrally mounted carrier bearing and delivers torque to an assembly at the rear of the vehicle Jeep refers to as the Rear Drive Unit. An electronically controlled multi-plate wet clutch located inside the rear drive unit variably couples this driveshaft with a pinion gear that drives an open differential carrier and delivers power to the rear wheels. The clutch coupling force is sufficient to supply up to 100% of available engine torque to the rear axle. A driver accessible control located between the front seats allows the driver to command a locked 4wd mode that simulates the behavior of a fixed center coupling on a conventional 4WD vehicle. In both the default operating mode and the driver selected 4WD mode, the operation of this clutch is computer controlled and it will disconnect and revert to automatic operation above 35 miles per hour. To prevent static driveline windup the powertrain controller will vary the force of clutch engagement while the vehicle is traveling on a curved path, using input from a steering angle sensor.
An optional four-wheel drive system called Freedom Drive II is based on Freedom Drive I and operates similarly, however in combination with a unique CVT transmission it is capable of a 19:1 gear reduction simulating a low range usually found in vehicles with dedicated transfer cases. This 19:1 "crawl" ratio is achieved with a much lower (numerically higher) ring and pinion ratio compared to non Freedom Drive II vehicles and permits the driver to optionally hold this initial ratio for enhanced control at very low speeds.
Freedom Drive II is part of an equipment package including several other enhancements intended for use on more difficult terrain and Jeep Patriots with this package bear Jeep's "Trail Rated" badging.
All Jeep Patriots include an enhanced traction control system that operates on both driven axles (4WD models) or on the front axle only (2WD models) to supply torque to all four wheels effectively and without a locking or limited slip differential. This system is branded BLD by Jeep and operates by applying braking force to a wheel on either (driven) axle if that wheel is measured spinning faster than the other wheel on the same axle. BLD remains in effect even if the driver selects the traction control off option.
The 2.4 L GEMA I4 is an option for the 4X2 model Patriot.
For Europe and Australia, a 2.0 L (1968 cc; 120 cid; 140ps) Volkswagen-manufactured diesel engine is fitted along with a 6-speed manual gearbox. All EU cars are fitted as standard with four wheel drive and a version of the Freedom Drive System that tuned differently from the U.S. versions, but with similar capability to FDII with brake traction control and three switchable electronic stability control and traction control settings for on or off-road use.
The Patriot won the 2007 Green 4x4 Award and the 2008 4x4 of the Year in the UK.
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Common 2009 Jeep Patriot 4x4 problems
The Jeep Patriot 4x4 2009 has been reported to have several common problems by its owners. Here are some of the issues in detail:
- Corrosion of Ground Wire Connections: Ground wire connections, especially near the alternator, are prone to corrosion, which can cause strange electrical issues. Checking for corrosion and looseness in these connections can help resolve such problems .
- ABS Light and Four-Wheel-Drive Light Issues: The ABS light and four-wheel-drive light can come on due to corroded wiring under the driver's footrest, a bad wheel speed sensor, or a bad or rusted wheel bearing. The ABS needs to be code-scanned as a first step to diagnose the problem .
- CVT Transmission Overheating: The Continuously Variable Transmission (CVT) in the Jeep Patriot is known to overheat, causing loss of acceleration and whining or humming noises. This issue can lead to jerky movements and loss of power, and the CVT transmission is expensive to replace .
- Premature Failure of CVT: The CVT in the Jeep Patriot has been reported to fail prematurely, with whining noises, overheat warnings, and acceleration problems being the initial symptoms. This issue is common in the 2007 to 2010 model years, with more than 800 reports on RepairPal.com.
- Four-Wheel-Drive System Problems: The Jeep Patriot has a front-biased 4WD system, which means the front wheels are always powered, and the rear wheels are only engaged when necessary. However, the system does have a Lock Mode, which sends more torque to the rear wheels. Problems with the wiring harness and relay box in the inner fender can affect the four-wheel-drive system .
- Sunroof Drain Tube Clogging: Rainwater tends to leak inside the vehicle and run down through the dome lights and the overhead console, usually caused by bad sunroof edge seal and clogged sunroof drain tubes .
- Alternator Bearing Noise: The alternator bearings in some Jeep Patriot vehicles are prone to becoming noisy at low mileage, requiring replacement .
- Lower Ball Joint Wear: The lower ball joints are prone to experience premature wear, causing alignment issues and uneven tire wear .
- TIPM Malfunction: The TIPM (Totally Integrated Power Module) in some Jeep Patriot vehicles is prone to malfunction, causing no start conditions and vehicles to shut down while driving .
These common problems should be considered when purchasing or maintaining a Jeep Patriot 4x4 2009. Regular inspections and maintenance can help prevent or address these issues, ensuring the vehicle's longevity and reliability.
What is the biggest problem with Jeep Patriot?
Common Jeep Patriot Problems
- Premature CVT failure - The Patriot's continuously variable transmission is prone to failure. ...
- Water leaking into the cabin - Numerous Patriot models are known to have leaky cabins. ...
- Stalling engine - One of the worst issues with the Patriot lineup is the stalling engine.
Is there a recall on 2009 Jeep Patriot transmission?
CHRYSLER IS RECALLING 712 MY 2009 SEBRING, DODGE CALIBER, AVENGER, JOURNEY, JEEP PATRIOT, AND COMPASS VEHICLES. A NEW ADHESIVE USED IN THE POWER TRAIN CONTROL MODULE (PCM) MANUFACTURING PROCESS CAN CAUSE THE PRINTED CIRCUIT BOARD TO BREAK. What should you do: DEALERS WILL REPLACE THE PCM FREE OF CHARGE.
How many miles does a 2009 Jeep Patriot last?
According to motorbiscuit.com, a standard Jeep will last around 200,000 miles with proper care. Since the Patriot is known to last 200,000 miles, it's safe to say that anything right below 200,000 miles is high for the Jeep Patriot.
How does Jeep Patriot 4WD work?
The standard four-wheel drive system is called Freedom Drive I. This is a full-time Automatic 4WD that directly drives the front differential carrier from the transmission output and is exclusively front-wheel drive whenever 4WD is not commanded by the powertrain control module or the driver.
What is the biggest problem with Jeep Patriot?
Common Jeep Patriot Problems
- Premature CVT failure - The Patriot's continuously variable transmission is prone to failure. ...
- Water leaking into the cabin - Numerous Patriot models are known to have leaky cabins. ...
- Stalling engine - One of the worst issues with the Patriot lineup is the stalling engine.
How long do 2009 Jeep Patriots last?
According to vehiclehistory.com, you can expect the Jeep Patriot to last around 200,000 miles with proper care. If you're someone who ensures your vehicle is in pristine shape, it could last far beyond that point. It's a decent car for an off-roading experience behind the wheel with the classic Jeep appearance.
What is the gas mileage on a 2009 Jeep Patriot Limited 4x4?
Compare Side-by-Side
| 2009 Jeep Patriot 4WD | |
|---|---|
| EPA Fuel Economy | 21 MPG 20 22 combined city/highway city highway |
| 4.8 gal/100mi | |
| 284 miles Total Range | |
| Unofficial MPG Estimates from Vehicle Owners Learn more about "My MPG" Disclaimer | 21.0 MPG Average based on 1 vehicle View Individual Estimates |
How does Jeep Patriot 4WD work?
The standard four-wheel drive system is called Freedom Drive I. This is a full-time Automatic 4WD that directly drives the front differential carrier from the transmission output and is exclusively front-wheel drive whenever 4WD is not commanded by the powertrain control module or the driver.
2009 Jeep Patriot 4x4 complaints
The NHTSA has received 0 complaints about various vehicle components related to the 2009 Jeep Patriot 4x4.
You can leave your car complaint via the special form below.
Additional sources
More sources of information about 2009 Jeep Patriot 4x4 problems:
2009 Jeep Patriot Problems and Complaints - 13 Issues
Top 2009 Jeep Patriot Problems · CVT Transmission · Engine Will not Start Due to Wireless Control Module Fault · Water Leaks From the Front and/or Rear Roof Area.
4x4 problems | Jeep Patriot Forums
May 11, 2009 ... And do get it muddy! It's the Jeep way of being pretty! ;). 2009 - Jeep Patriot, Sport (Light ...
How reliable are Jeep Patriots? : r/JeepPatriot
Sep 2, 2021 ... Transmission failure is common (CVT or automatic but mostly cvt), electrical issues are very common especially around the stereo, speaker ...
Common problems??? | Jeep Patriot Forums
Sep 29, 2010 ... Common problems??? ... Can't speak on the previous years because we never owned 1. 2014 Jeep Patriot Sport 4x4 ... 2009 "Piece of Sh :eek: t" ...
Here Are The Jeep Patriot Years To Avoid - CoPilot
Mar 27, 2024 ... Common Jeep Patriot Problems · Premature CVT failure - The Patriot's continuously variable transmission is prone to failure. · Water leaking into ...
Other years of Jeep Patriot 4x4
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