Hi. I have a problem with my car. When i press the button to lock the doors on my car only the driver door locks the 3 other doors don't,the plastic thing on the door just moves a litle bit but doesn't go all the way down. And if i lock them manualy every door i open and press the lock and close after that i press the unlock button on the key all the doors unlock. Anyone has any idea what is the problem? Thank you.