I am having a new and strange problem when I unlock my doors. When I walk around to where I have my 3 year old in the back seat car seat and pull the door handle, as I pull the handle, the lock plunger comes down and locks. If I push the remote to unlock all the doors, it does it again. I have to physically get in the car and pull the plunger up before I can open the door. Does this sound like maybe a lubrication problem and when unlocking the mechanism doesn't rise far enough to be committed to unlocking? Thanks for any advice. Jim Decker