The first cars like the Stanley Steamer had mechanical door locks. The first car with power locks was a luxury car called the Scripps-Booth in 1914. It is unclear through most references which engineer working on the Scripps invented the power lock. Power locks were popularized by Packard luxury automobile Co in 1956. It is unclear through most references as to which engineers working for Packard invented their power locks.
Let's Lock the Door - And Throw Away the Key - was created in 1965.
There are a number of reasons why your door might not lock. You could have something stuck in the door for example.
The answer is a key
The power locks can only be engaged from the driver's door. You press down on the door lock on the driver's door and it will lock all the doors. Or you turn the key in the lock to the right in the door lock of the driver's door and it will lock all of the doors.
Slide the card through the slot where the lock is by the door. Set the card where the lock would be. Now open the door.
Begin by removing the inside door panel on your 1997 Plymouth Grand Voyager. Remove the door lock linkage. Remove the door lock retaining bolts. The door lock will come out.
You will have to remove the door panel. And it will be mounted over by the door lock on the inside of the door.
Hold door handle (opening lever) as if you're opening the door and then push lock lever to lock
Take out the "Door lock fuse".
What? Barn door lock on a Yukon????
If the door lock on a 2003 Saturn Ion is pushed into the door, it can be fixed by removing the inside panel of the door. Then the lock can be placed where it needs to be and secured in place.
You can open a key lock on a door knob, or you can open a deadbolt lock on the door itself.