The Liberty seems to have problems with window motors/regulators. We bought this car new in Jan 2007 as a end-of-year 2006 model. The first year we had it the driver's window began to stick and we had to take it in. Dealership said the window motor was going bad and replaced it under warranty.
This year (and this week (September) ) I just had the rear, driver's side, window regulator replaced under warranty. The window went down and stayed. You could hear the motor running and gears turning when you held the button down but no movement.
What's weird is I asked the mechanic at the dealership if they see many window problems with the Liberty. He said "Oh yeah, we'll probably replace all four of your regulators/motors before it's done!
If they know there is a design flaw or faulty parts and are replacing them this frequently, then why doesn't Jeep fix it on the line before they go out! Every trip to and from the dealership costs me an hour of missed work and the time and money adds up even if the work is actually covered by warranty.
I hate to say this but I am on my 5th window regulator in my 2006 Jeep Liberty. There is clearly a defect since the regulators seemingly cannot last more than a year. My local dealer agrees that there is an issue all the way up to the point of when I ask them not to charge me. The parts they are installing today are the same part number, material and design of the failed parts so I think this will be a long road to ride until I am rid of the Jeep.
I too have the same 2006 Jeep Liberty, 47,000 miles, and both my rear window regulators have gone bad. The worst part is I NEVER USE THEM!
The first time the vehicle was under warranty so parts and labor was covered, today it was not. I had to put up quite a fuss by calling Chry. Customer Service at 800-992-1997 and state my case. Chry said they would pay for everything but a $50 dollar co-pay. I have the same story as everyone else. The dealer and Chry customer service all admit that the 2006 Jeep Liberty window compressors are faulty. The problem is not enough people nation wide have called to complain about this so they won't issue a recall.
I urge you to call 800-992-1997 to state your case. The dealership told me they have replaced all 4 window compressors 2 times in 12 months for many of their customers.
Our Jeep Liberty '06 just had the rear driver side window do the same thing... 50,000 miles on it. As a longstanding Jeep owner, I hope customer service shows customer appreciation.