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: 88,857 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, 2003 Jeep Liberty, 103,000 mi
buzzing sound when locking door
Visitor, 2006 Jeep Liberty, 132,000 mi
Rear driver side door making loud metal grinding noise when engaging locks. Has become worse over the last week.
Visitor, 2004 Jeep Liberty, 71,000 mi
rear driver side door makes a buzzing sound when locks are engaged
Visitor, 2005 Jeep Liberty, 145,000 mi
Noisy Power Door Locks
Visitor, 2003 Jeep Liberty, 93,000 mi
Rear drivers door lock inoperable.
Visitor, 2007 Jeep Liberty
when i lock the door of my 2007 jeep liberty either way, it makes a loud buzzing noise and doesn't lock correctly
Visitor, 2002 Jeep Liberty, 105,000 mi
Driver door lock wasnoisy now does not function with remote nor interior lock switch