Hello, I bought a 1995 BMW 318i sedan and i can only lock and unlock from the driver side door with the key. None of the other 3 doors lock or unlock. I have to lock and unlock the other doors manually from the inside. The key wont turn the cylinder on the passenger side to lock or unlock. The trunk is also unlocked and I can't lock or unlock it with the key. There isn't a door lock/unlock button or switch inside the car. A 25 amp fuse that powers the central locking was blown but when i replaced it it still didn't work. All the other fuses are good.