Usual cause the power door locks utilize individual solenoids in each of the doors that activate the door lock mechanism.
Power lock wont work one door.
Power door locks can break down over time because of a worn out actuator.
The drivers door lock switch is the most used so it stands to reason that it would fail first.
The power windows switch also works on the driver side.
The actuator is a series of gears with a set of rack and pinion gears at the end.
To lock the doors the switch provides voltage to the two terminals of the solenoid.
Don t waste your time changing the power.
If the door lock doesn t seem to be getting power hold the door lock switch in the up or down in newer cars locked or unlocked position and slowly open and close the door a number times to see if the lock attempts to work.
If it does there s probably a broken or partially broken wire in the hinge area.
The switch provides power to the door lock solenoids.
The power door lock actuator is the part of the power door lock system that actually controls the locks.
Malfunctioning power door lock actuator.
The drivers door switch controls all power door locks.
If the key works in it and the other front door a previous owner may have replaced the driver s door key cylinder but not have paid to have it keyed to the other locks.
Remove a door panel for a dodge ram fix a power door lock window or speaker this video explains it all in detail.
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.
Actuator usually to blame for broken power locks.
Symptom summary the power door locks are all inoperative or a single door lock is inoperative.
In most cases the problem with a door lock actuator is limited to only one door.
When the actuator gets the signal from the power door lock switch a small motor turns the gears.
Inside each of your car s doors is a hard working motor that locks and unlocks them with each push of a button.