Today I went to open my car with the key (door lock actuators are both shot) and when I pulled the key out of the lock, the lock mechanism came out of the door a bit. I was able to get it back in, but it doesn't feel secure at all and if I pull on it then it comes back out. What the hell do I do about this, and would it be an expensive repair if I took it to a shop?

 

Set screw fell out, it's probably in your door panel. Take it apart and screw it back together.

 

Do you happen to know what kind of screw is in there? I can get into the door to access the screw hole through an opening on the edge of the door, but without the right screw I can't fix it properly. I looked on the infiniti diagrams and I think it's screw 80550A

 

All good, I got the little rubber piece on the edge of the door off and turns out the screw was barely hanging on so I got it nice and tight and the lock is nice and secure again. Thanks for the input though, wouldn't have known there was a screw holding it on.