Power Door Lock Will Not Work

Does it work with the door switches but not the remote key fob.

Power door lock will not work.

An inoperative power door lock can be caused by the switch solenoid wiring problem or mechanical problem within the linkage of the affected door. The windows and the locks are on two separate circuits. Impala power door lock actuators are known to go bad. The most likely cause of your problem is the master switch in the drivers door.

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. And although you expect things like your power door locks to work without fail that isn t always the case. That s where most wire breaks occur. Inspect the fuse that protects the door lock circuit to ensure it is not blown.

Here are some common reasons the actuator wears out and how much it costs to replace one. You don t want to be kicking yourself later because you missed something so obvious. If all of the door locks are inoperative start your diagnosis at the fuse box. 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.

Here s a power door lock wiring diagram for a 2009 chevrolet malibu. First find out if the door lock actuator works in any mode i e. Go to a dealer and they will. Diagnose power door locks don t work properly part 2 by reiner continued from part 1 power door lock repair tips tricks.

For vehicles equipped with door lock cylinders the door can still be opened using the key. The only part that these two have in common is the master switch. Power door locks can break down over time because of a worn out 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.

Power door locks that do not function are another common symptom for a problem with the door lock relay. If that doesn t solve the problem you may have a faulty key fob. 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. Here s how a body control module power door lock system works.

If the door lock actuator doesn t work with any method then the problem can be the door lock. If your power locks work intermittently via the key fab or controls inside this will 100 fix your iss. 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. However vehicles without door lock cylinders will not be able to lock or unlock the doors until power is restored.

7 fixes to try if your car s power door locks won t work 1. Replace the key fob.