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Town and country door lock making noise.
If you hear the buzz when you press the lock and unlock buttons as well as when your speed hits 15 mph auto lock then you have a bad lock actuator and the latch in the sliding door will need to be replaced to resolve your issues.
43 people reported this problem repairpal fair price estimate.
If the door lock actuators integrated into the door latch assembly are noisy and or not working the latch should be replaced.
In some cars a door lock actuator becomes noisy and produces a squeaking or buzzing noise when the power door locks are locked or unlocked.
If the electric motor or the mechanism inside the door lock actuator wears out the door lock may lock or unlock slowly or work sometimes but not all the time.