The 2007 Liberty (KJ platform) is known for catastrophic 3.7L V6 engine failures and problematic automatic transmissions. These aren't wear items—they're design flaws that can total the vehicle between 80k-150k miles.
3.7L V6 Cylinder Head Cracking and Valve Seat Failure
Common · high severity
Typical onset: 80,000-140,000 mi
Symptoms: Coolant loss with no visible leaks, white smoke from exhaust, Misfires on cylinders 3 or 6 most commonly, Overheating without warning, sudden loss of compression, Metal shavings in coolant, milky oil
Fix: The 3.7L PowerTech heads develop cracks between valve seats or the seats drop into the cylinder. Requires both heads replaced (not just repaired), new head bolts, timing components, and full cooling system flush. 16-20 labor hours. Many shops won't warranty a single-head job—both must be done.
Estimated cost: $3,500-5,500
Automatic Transmission Oil Cooler Line Failure at Radiator
Common · high severity
Typical onset: 70,000-120,000 mi
Symptoms: Transmission fluid in coolant (strawberry milkshake appearance), Coolant in transmission causing slipping and harsh shifts, Sudden transmission failure after coolant contamination, Pink residue in coolant reservoir
Fix: The cooler lines corrode where they connect to the radiator, allowing cross-contamination. Once mixed, transmission is often toast. Requires new radiator, external trans cooler installation (delete the internal one), transmission flush or rebuild depending on contamination severity, and all coolant system flushing. If caught early (fluid check every oil change): 8-10 hours. If transmission damaged: add 12-16 hours for rebuild.
Estimated cost: $1,200-4,800
Lower Ball Joint Premature Wear and Separation
Common · high severity
Typical onset: 60,000-100,000 mi
Symptoms: Clunking over bumps from front suspension, Wandering or loose steering feel, Uneven tire wear on inside edge, Visible play when prying on tire at 6 and 12 o'clock
Fix: The lower ball joints wear rapidly and the boot tears, allowing contamination. Unlike many vehicles, these are pressed into the control arm and many techs replace the entire lower control arm assembly for reliability. Both sides should be done simultaneously. 3-4 hours labor. This is a critical safety item—separation causes complete loss of steering control.
Estimated cost: $600-1,000
Rear Suspension Track Bar Bushing Failure
Common · medium severity
Typical onset: 50,000-90,000 mi
Symptoms: Rear axle visibly off-center when viewed from behind, Dog-tracking (vehicle drives crooked on straight roads), Clunking from rear over bumps, Excessive rear tire wear
Fix: The rubber bushings at both ends of the rear track bar deteriorate, allowing the rear axle to shift laterally. Requires track bar replacement (adjustable aftermarket bars are recommended over OEM). 2-3 hours labor including alignment.
Estimated cost: $400-700
Window Regulator Failure
Common · low severity
Typical onset: 60,000-110,000 mi
Symptoms: Window drops into door or falls slowly, Grinding or clicking noise when operating window, Window won't raise or lowers on its own, Uneven window movement or tilting
Fix: The plastic window regulator clips and guides break, and the cables fray. Most common on driver's side, but all four doors are susceptible. Requires regulator assembly replacement (motor usually fine). 2-2.5 hours per door.
Estimated cost: $300-500
EVAP System Leak Detection Pump Failure
Occasional · low severity
Typical onset: 80,000-130,000 mi
Symptoms: Check engine light with P0456 (small EVAP leak) or P0442, No drivability issues, emissions test failure in some states, Clicking sound from rear of vehicle near fuel tank after shutdown
Fix: The EVAP leak detection pump (LDP) diaphragm fails or the solenoid sticks. Located near the fuel tank on driver's side frame rail. Requires pump replacement and smoke test to verify no actual leaks exist. 1.5-2 hours labor.
Estimated cost: $350-550
Front Driveshaft CV Joint Failure (4WD Models)
Occasional · medium severity
Typical onset: 70,000-120,000 mi
Symptoms: Clicking or clunking during turns in 4WD, Vibration at highway speeds in 4WD mode, Grease spray visible under vehicle near transfer case, Binding sensation when turning in 4WD
Fix: The front driveshaft's double-cardan CV joint wears out, especially if 4WD is used regularly. Boot tears allow contamination. Most shops replace the entire driveshaft assembly rather than rebuild. 2-3 hours labor.
Estimated cost: $600-900
Owner tips
Check coolant and transmission fluid color at every oil change—cross-contamination is a death sentence for the transmission
Inspect lower ball joints annually after 50k miles; this is a safety-critical item prone to sudden failure
Change transmission fluid every 30k miles with Mopar ATF+4 only—these transmissions are sensitive to fluid condition
Budget $4,000-6,000 for inevitable engine or transmission replacement if buying over 100k miles
Hard pass unless under $3,000 and you're handy—the 3.7L V6 and transmission are ticking time bombs that will exceed the vehicle's value to repair.
AI-assisted summary drawn from NHTSA recall data, our labor-times database, and platform knowledge. Not a substitute for a pre-purchase inspection on a specific vehicle.
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Chrysler (FCA US LLC) is recalling certain 2004-2007 Jeep Liberty vehicles. The rear suspension lower control arms can fracture due to excessive corrosion, causing a loss of vehicle control.
Consequence: A fractured control arm can cause a loss of vehicle control, increasing the risk of a crash.
Remedy: Chrysler will notify owners, and dealers will replace the rear lower control arms, free of charge. The recall began June 26, 2018. Owners may contact Chrysler customer service at 1-800-853-1403. Chrysler's number for this recall is U38. Note: This recall is an expansion of recall 12V-085. Vehicles included in that campaign are not included in this recall.
Chrysler Group LLC (Chrysler) is recalling certain model year 1993-1998 Jeep Grand Cherokee and 2002-2007 Jeep Liberty vehicles. The fuel tanks in these vehicles are at risk of failure and leakage in certain rear impacts.
Consequence: A fuel leak in the presence of an ignition source may result in a fire.
Remedy: Owners may take their vehicles to dealers and the dealers will perform a free inspection of the rear structure. On vehicles in the recall that are not equipped with a tow hitch, Chrysler will install a Chrysler designed tow hitch free of charge, provided the condition of the vehicle can support proper installation. On vehicles in the recall that are equipped with an aftermarket tow hitch, Chrysler will assess whether the hitch and surrounding areas show evidence of sharp edges or other puncture risks. If so, Chrysler will replace the tow hitch with a Chrysler designed tow hitch free of charge, provided the condition of the vehicle can support proper installation. On vehicles already equipped with a Chrysler designed tow hitch, Chrysler will inspect the area around the tow hitch installation, and if any installation issues are identified, they will be repaired free of charge. The recall began on August 1, 2014. Owners may contact Chrysler at 1-800-247-9753. Chrysler's recall campaign numbers are N45 (for the Grand Cherokee vehicles) and N46 (for the Liberty vehicles).
SUSPENSION:REAR · 12V085000
2012-03-05 · EA11013
IN JUNE 2012, CHRYSLER EXPANDED THIS RECALL TO INCLUDE MODEL YEAR 2006 AND 2007 JEEP LIBERTY VEHICLES, REPRESENTING AN ADDITIONAL 137,176 VEHICLES. THIS RECALL NOW CONCERNS CERTAIN MY 2004-2007 JEEP LIBERTY VEHICLES. THE TOTAL NUMBER VEHICLES BEING RECALLED IS NOW 346,900. THESE VEHICLES WERE MANUFACTURED FROM JULY 3, 2003 THROUGH JUNE 29, 2007. THE RECALL ADDRESSES THOSE VEHICLES ORIGINALLY SOLD, OR CURRENTLY REGISTERED IN, CONNECTICUT, DELAWARE, ILLINOIS, INDIANA, IOWA, MAINE, MARYLAND, MASSACHUSETTS, MICHIGAN, MINNESOTA, MISSOURI, NEW HAMPSHIRE, NEW JERSEY, NEW YORK, OHIO, PENNSYLVANIA, RHODE ISLAND, VERMONT, WEST VIRGINIA, WISCONSIN, AND THE DISTRICT OF COLUMBIA. SOME VEHICLES MAY BE EQUIPPED WITH REAR LOWER CONTROL ARMS THAT CAN EXPERIENCE A REAR SUSPENSION LOWER CONTROL ARM FRACTURE DUE TO EXCESSIVE CORROSION DUE TO APPLICATION OF ROAD SALTS DURING WINTER WEATHER CONDITIONS.
Consequence: A FRACTURE OF THE REAR LOWER CONTROL ARM MAY RESULT IN A LOSS OF VEHICLE CONTROL AND MAY LEAD TO A VEHICLE CRASH.
Remedy: CHRYSLER WILL NOTIFY OWNERS, AND DEALERS WILL REPLACE THE REAR LOWER CONTROL ARMS ON ALL AFFECTED VEHICLES ORIGINALLY SOLD IN, OR CURRENTLY REGISTERED IN, CONNECTICUT, DELAWARE, ILLINOIS, INDIANA, IOWA, MAINE, MARYLAND, MASSACHUSETTS, MICHIGAN, MINNESOTA, MISSOURI, NEW HAMPSHIRE, NEW JERSEY, NEW YORK, OHIO, PENNSYLVANIA, RHODE ISLAND, VERMONT, WEST VIRGINIA, WISCONSIN, AND THE DISTRICT OF COLUMBIA, FREE OF CHARGE. THE SAFETY RECALL BEGAN ON MARCH 26, 2012. OWNERS MAY CONTACT CHRYSLER AT 1-800-853-1403.
SUSPENSION · 09E039000
2009-06-19 · PE09005
ROCK KRAWLER IS RECALLING 44 PERFORMANCE SUSPENSION SYSTEMS SOLD AS AFTERMARKET EQUIPMENT FOR USE ON THE VEHICLE LISTED ABOVE. THESE SUSPENSION SYSTEMS WERE PRODUCED WITH GRADE 2 CARRIAGE BOLTS INSTEAD OF THE PROPER GRADE 5 CARRIAGE BOLTS. THE IMPROPER GRADE 2 CARRIAGE BOLTS COULD EXPERIENCE A LOSS OF CLAMPING FORCE FOR THE BOTTOM STRUT FORK.
Consequence: THIS CONDITION COULD CAUSE A LOSS OF EFFECTIVE LIFT AND LOWERING OF THE AFFECTED VEHICLE, POSSIBLY CREATING THE DRIVER TO PANIC WHICH COULD POSSIBLY LEAD TO A VEHICLE CRASH.
Remedy: ROCK KRAWLER WILL NOTIFY OWNERS AND PROVIDE A FREE REMEDY. THE SAFETY RECALL BEGAN ON OCTOBER 15. 2008. ALL THE AFFECTED UNTITS HAVE BEEN REMEDIED. OWNERS MAY CONTACT ROCK KRAWLER AT 1-518-270-9822.
ELECTRICAL SYSTEM · 07V089000
2007-03-09 · PE06056
ON CERTAIN PASSENGER VEHICLES EQUIPPED WITH VALEO HEATING, VENTILATION AND AIR CONDITIONING (HVAC), THE BLOWER MOTOR MAY OVERHEAT.
Consequence: THIS COULD CAUSE AN INTERIOR FIRE.
Remedy: DEALERS WILL REPLACE THE HVAC BLOWER MOTOR FREE OF CHARGE. THE RECALL BEGAN ON MAY 28, 2007. OWNERS MAY CONTACT DAIMLERCHRYSLER AT 1-800-853-1403.
SERVICE BRAKES, HYDRAULIC:ANTILOCK/TRACTION CONTROL/ELECTRONIC LIMITED SLIP:CONTROL UNIT/MODULE · 06V493000
2006-12-29
ON CERTAIN VEHICLES, THE ANTILOCK BRAKE SYSTEM (ABS) CONTROL MODULE SOFTWARE MAY CAUSE THE REAR BRAKES TO LOCK UP DURING CERTAIN BRAKING CONDITIONS.
Consequence: THIS COULD RESULT IN A LOSS OF VEHICLE CONTROL AND CAUSE A CRASH WITHOUT WARNING.
Remedy: DEALERS WILL REPROGRAM THE ABS ELECTRONIC CONTROL UNIT. THE RECALL BEGAN ON FEBRUARY 19, 2007. OWNERS MAY CONTACT DAIMLERCHRYSLER AT 1-800-853-1403.
POWER TRAIN:AUTOMATIC TRANSMISSION · 06V341000
2006-09-07
ON CERTAIN PASSENGER AND SPORT UTILITY VEHICLES AND PICKUP TRUCKS EQUIPPED WITH AUTOMATIC TRANSMISSIONS, THE SOFTWARE PROGRAMMED INTO THE POWERTRAIN CONTROL MODULE CAN CAUSE A MOMENTARY LOCK UP OF THE DRIVE WHEELS IF THE VEHICLE IS TRAVELING OVER 40 MPH AND THE OPERATOR SHIFTS FROM DRIVE TO NEUTRAL AND BACK TO DRIVE.
Consequence: IF THE DRIVE WHEELS LOCKED UP, LOSS OF VEHICLE CONTROL COULD OCCUR INCREASING THE RISK OF A CRASH.
Remedy: DEALERS WILL REPROGRAM THE POWERTRAIN CONTROL MODULE FREE OF CHARGE. THE RECALL BEGAN ON OCTOBER 2, 2006. OWNERS MAY CONTACT DAIMLERCHRYSLER AT 1-800-853-1403.
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