I have an old Toyota Echo with manual lock and windows and every now and then the lock will get pushed down and it jams up. I'm unable to unlock the car. I can't pull the lock up or roll down the window and try get the door to unlock that way. The key will not turn. Usually after a while I am able to force it open but it is getting harder and harder to do. Is there a way that I can fix this? Do I just need to spray some WD40 down in there or will that make it worse? Any advice would be great. thank you