Replacing it may require removing the car door panel.
Sometimes power locks dont work on one door.
A fuse is blown.
The solenoid is bad.
Replacing the fuse will correct the problem.
You don t want to be kicking yourself later because you missed something so obvious.
To lock the doors the switch provides voltage to the two terminals of the solenoid.
Note though that some types of intermittent failures can be extremely challenging even for professional technicians to find and repair so if an intermittent fault is suspected repeat all resistance and continuity tests on all wiring while vigorously wiggling the wiring until the fault is found and repaired.
If you seen battery voltage operated the switch and check for power coming into the control coil on either the lock or unlock relay.
Again if one door doesn t work but others do the problem could be with the door lock solenoid.
If one door doesn t work but others do the problem could be a blown fuse.
7 fixes to try if your car s power door locks won t work 1.
Then check for power at each door switch.
If that doesn t solve the problem you may have a faulty key fob.
The power door locks utilize individual solenoids in each of the doors that activate the door lock mechanism.
If one or more power door locks fail intermittently the cause is almost always bad electrical connections.
Replace the key fob.
Actuator usually to blame for broken power locks.
Diagnose those early power door locks start by checking the fuse.
Inside each of your car s doors is a hard working motor that locks and unlocks them with each push of a button.
Power door locks can break down over time because of a worn out actuator.
The power door locks are all inoperative or a single door lock is inoperative.
This is a cheap and easy fix.