The solenoid is bad.
One door doesnt lock cr.
Again if one door doesn t work but others do the problem could be with the door lock solenoid.
If the lock tries to move then the problem could be a frozen lock mechanism or a faulty solenoid.
This is a cheap and easy fix.
If the actuators have any sort of internal or wiring issue it may cause them to rapidly lock and unlock unexpectedly or cause them to function intermittently.
A fuse is blown.
Defrost the lock to check an individual lock mechanism work the door lock manually up and down or backwards and forwards in newer vehicles while using the auto lock button at the same time.
Replacing it may require removing the car door panel.
If the remote key won t unlock car door even after battery swapping or fixing the battery contacts try a distant unlocking service.
If the doors lock with any one switch the most likely problem is a defective switch on the door that is inoperative.
Replacing the fuse will correct the problem.
Power door locks do not function.
Another symptom of a potential problem with the power door lock actuators are door locks that behave erratically.
Power door locks behave erratically.
If one door doesn t work but others do the problem could be a blown fuse.
Just make sure the key is on.