I am having a similiar issue, My key fob is dead and ive been using my key for awhile and last night i went to lock the door and the key wouldnt turnvery easily, i then could get it to turn but the key would just turn the lock but the door would not actually lock, and i could keeo turning the key if i used enough force. Could this be something with the central lock unit in the trunk or with the lock mechanism itself in the door. I cant lock my car right now and its pretty concerning. Thanks for any input