Well, my niece did something, and now the door lock on the passenger rear door doesn't work. At first it wouldn't open, but After I fiddled with it, I got it to open normally, but the lock doesn't lock. I can hear the electric lock cycle, but the lever itself feels really stiff. Can anyone give me some pointers on how to fix this? Did a search with zero results... Depressing. After 116,000 miles my car is falling apart... HELP!!!