Power Door Lock Will Not Work

First find out if the door lock actuator works in any mode i e.

Power door lock will not work.

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. Replace the key fob. 7 fixes to try if your car s power door locks won t work 1. The actuator consists of a motor gears and a cable that extends or retracts to lock and unlock the doors.

Is your power door lock actuator bad. You don t want to be kicking yourself later because you missed something so obvious. If the power door lock relay fails it will cut off power to the entire power door lock system and may cause them to not function correctly. Power door locks can break down over time because of a worn out actuator.

If all of the door locks are inoperative start your diagnosis at the fuse box. There are several ways to find out if you have a bad power door lock actuator. 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. And although you expect things like your power door locks to work without fail that isn t always the case.

However vehicles without door lock cylinders will not be able to lock or unlock the doors until power is restored. For vehicles equipped with door lock cylinders the door can still be opened using the key. Power door locks that do not function are another common symptom for a problem with the door lock relay. Here s a power door lock wiring diagram for a 2009 chevrolet malibu.

An inoperative power door lock can be caused by the switch solenoid wiring problem or mechanical problem within the linkage of the affected door. Diagnose power door locks don t work properly part 2 by reiner continued from part 1 power door lock repair tips tricks. If the relay and switch are working properly but you re not getting power and ground at the door lock actuator check the wiring harness in the hinge area of the door. Inspect the fuse that protects the door lock circuit to ensure it is not blown.

If that doesn t solve the problem you may have a faulty key fob. The windows and the locks are on two separate circuits. Here are some common reasons the actuator wears out and how much it costs to replace one. Does it work with the door switches but not the remote key fob.

Here s how a body control module power door lock system works. Apart from what has been stated in part 1 diagnosing problems with power door locks is not always a straightforward affair but one way to avoid confusion and misdiagnoses is to approach the problem logically. If the door lock actuator doesn t work with any method then the problem can be the door lock. The most likely cause of your problem is the master switch in the drivers door.

That s where most wire breaks occur. Impala power door lock actuators are known to go bad.