The lock mechanism may not work simply because the lock is dirty or dry and needs to be lubricated with graphite do not use any type of oil because this will gum up the works.
How to make a door lock not work.
Door lock problems that are a result of debris jamming up the keyway should not be ignored because they can potentially result in more problems like breaking a key in a lock.
The wd 40 lubricant will work for a short time to lubricate but will eventually gum up the pin tumblers and cause them to stick in the chamber therefore making it difficult to unlock the door.
Door lock actuators are.
Also a broken bolt or latch that causes your door lock to jam might be a symptom of a much larger issue like an attempted home break in.
How to fix a door that will not lock.
If the door lock actuator doesn t work with any method then the problem can be the door lock actuator itself the wiring or the control module.
This will require the driver to use the key to lock or unlock the doors and can disable the power door locks completely for vehicles that do not use a traditional key such as newer luxury vehicles.
If the door lock actuators fail they will disable the power door lock feature from working.
It is not recommended to use wd 40 in or on any type of door locks or deadbolts.
Symptoms of a failing door lock actuator.
An improperly functioning latch may be the result of a poorly fitting door.
For serious lock problems it is usually best to call a locksmith or to replace the lock.
First find out if the door lock actuator works in any mode i e.