Leaks at the front and/or rear differential pinion seal and from the transfer case are common. Low fluid level in the differential or transfer case can result in bearing failure. Damaged bearings commonly cause a whine or growl type noise.
Car Problem Reports
Jeep Liberty Front/Rear Differential Pinion Seal/Transfer Case Leaks are Common
Jeep Liberty Problem
Drive Trains Affected: 2WD, 4WD, Automatic Transmission, Manual Transmission
Average Mileage: 76,484 mi (3,300 mi - 131,000 mi)
Visitor, 2007 Jeep Liberty, 4WD, 46,000 mi
Rear axle pinion seal leaking
i am having exactly the same problem, I already replaced the wheel bearings and the mechanic told me that my differential is out, that either get a new one or rebuild will fix the problem, he said it will cost between $850.00 to $1000.00 to fix this problem, he also said that the bearings in the differential need to be change, I found this cost extremely expensive, my speed sensor went bad, already replaced but my speedometer still not working, I noticed some like oil leaks from the differential. How expensive will be to fix this problem, what is the risk of me driving long distances? please help.
Leak found by Jeep dealer during oil change. Seal changed that very day - this Jeep has a lifetime powertrain warranty without any deductible (!!) and also a purchased lifetime bumper to bumper warranty with a $100 deductible. Total cost here: $0.00
I'll report on any other issues as we go along.
Visitor, 2004 Jeep Liberty, 4WD, 100,000 mi
First the rear and now the fron pinion seal leaks, 179.00 each done at jeep
Visitor, 2004 Jeep Liberty, 4WD, 80,000 mi
Leaks at pinion seal.
Visitor, 2008 Jeep Liberty, 4WD, 42,800 mi
had the pinon seal changed and now there is a slight noise and a small viberation in it. not a happy camp with this did not have this problem until they fixed the pinon seal..
The rear differential is starting to leak. What a hassle this Jeep has been, and we have 2 years left of payments. What a ripoff, Never use 4 Your Car Connection in Seneca, Pa 16346
Visitor, 2006 Jeep Liberty, 4WD, 115,000 mi
Wasn't fixed. just notified about it at a dealer
Visitor, 2007 Jeep Liberty, Automatic Transmission, 54,800 mi
Driving on the interstate and heard a loud whining noise coming from the rear. Soon after, when traveling at 70mph the jeep lost power, made a horrible grinding noise, and was smoking from underneath the rear end. I had to be towed 150 miles and it was diagnosed with the rear differential being "burned" due to a leak. This repair cost was $2700.00 @ the dealership. This took place only a week after replacing the transmission lines which also had a leak for $465.00. All of these issues and the jeep only has 55,000 miles!
Visitor, 2008 Jeep Liberty, Automatic Transmission, 89,000 mi
Went to have oil changed said I had a rear pinion seal leak