Pull up the door lock button next to the door glass.
The door does not lock with the "door lock" button from the inside to prevent locking your key inside of the car. Simply turn the key in the door when you close it to lock all the doors.
if you look where your window controlls are, to roll the windows down, there is a switch you hold to the side, which doubles as your door lock button too...
Take te child lock off of the door
power door lock actuator is broken and not letting the key raise the lock button
I have a similar problem, My drivers side front and back work fine, it's my right side front and back that move but don't quit lock or unlock. Each door has a motor that operates the door lock mechanism when the door lock button or the remote lock button is pushed. If the door lock moves a little but not enough to lock or unlock the door, then either the motor is not working fully or it is partially jammed, or the door lock mechanism is binding and the motor can't move it fully. Remove the door lock trim panel and check all the components involved in the door lock process until you find the problem. I had the same problem in my 1999 Sub. The factory uses rivits to hold the door lock actuators in place. Over many uses the rivits elongate and the actuator travel is not enough to over come the longer distance. Try replacing the rivits with short screws. Short so they do not interfear with other stuff that moves in the door.
There is an auto trunk release on a 2004 Grand Prix. If you push the drivers side door lock button to the left and hold it, the trunk will open.
Remove the inside door panel. Remove the door lock linkage. Remove the door lock barrel retaining ring. Reverse the process to install the new door lock.
Remove a battery cable for about 5 min. While waiting to install it open the drivers door. Install cable without shuting the door lock it with the lock button on the door panel(power door lock button), now shut the door and unlock it with the key.. This should work it did for me
Replacing door actuator on ml500. How do I remove the outside door handle?
push down on the button at the rear of the door where the window meets.
Hey Christina==It is on the door edge above the lock assy on the rear of the door. GoodluckJoe