The interior door handle on my 03 liberty has been problematic for quite a while. Since it still worked I didn't feel it needed repair. I sprayed lube into the door and just carried on --- no big deal. Unfortunately it worsened and needed attention. I went to a local autobody shop I trusted and they agreed to pull the panel and get back to me on the repair. $ 80 to remove and reinstall the door plus parts. They called and said the plastic guides that the handle shaft was mounted in were cracked and when they called the dealer for the part ,guess what? You have to buy the entire door panel because no individual parts were available. Cost was $400. The tech said the whole shop was in shock and awe. Just when you think you've seen in all --- there you go. He said his best man would try a fix using a special epoxy and mold the part if I was interested. Of course I agreed and the next day he said it was ready and though they felt the fix looked good there couldn't be a guarantee on the repair. The door works like new and he only charged me a total of $89.
So all you liberty owners need to go gentle on the handles and pray for good luck. Of course if it breaks , you can always lower the window and open it from the outside.