If the power door locks are buzzing or are intermittently noisy, a new door latch assembly may solve this. The door lock actuators are integrated into the latch assemblies.Google+
Car Problem Reports
Jeep Liberty New Latch Assembly Will Solve Noisy Power Door Locks
Jeep Liberty Problem
Average Mileage: 88,334 mi (31,000 mi - 175,000 mi)
Visitor, 2010 Jeep Liberty, 35,000 mi
Door Locks stopped working on both Driver and passenger side of Vehicle.
Visitor, 2007 Jeep Liberty, 63,000 mi
For the past couple of weeks I've noticed a "clicking" sound when opening my door after the lock was engaged. Today, the lock on the driver's side door is making a "buzzing" sound. How do I fix this?
Visitor, 2010 Jeep Liberty, 52,000 mi
passenger rear door lock failed.
Visitor, 2004 Jeep Liberty, 90,900 mi
driver side door latch and key entry problem
Visitor, 2009 Jeep Liberty, 67,128 mi
Power door locks in the front of the vehicle (passenger and driver sides) started making a humming type of noise and short thereafter, stopped powering up and down both front door locks.
Visitor, 2003 Jeep Liberty, 103,000 mi
buzzing sound when locking door
Visitor, 2006 Jeep Liberty, 88,000 mi
Drivers side front makes a loud noise when you lock a d unlock the door
Visitor, 2007 Jeep Liberty, 125,000 mi
Power locks failed on left rear door and rear cargo hatch
Visitor, 2008 Jeep Liberty, 62,000 mi
passenger door lock goes haywire when i lock my doors meaning it goes up and down (locks and unlocks) continuously untill i shut the car off and have to manually lock the door
Visitor, 2009 Jeep Liberty, 100,000 mi
Rear right door actuator malfunctioning. Thought maybe it was just jammed with a piece of teach, etc., had to buy new actuator. Found one for about $80. Not a fun or easy fix either. I pity anybody who has to remove a door panel in one of these newer model liberties. But it beats the $200-$400 repair bill the dealer would've charged.