BMW E30 318i central locking fault
I have a Bmw E30 318i touring from 1991. The central locking system is dead, i tried to open it with the key, i managed to do this on the trunk and drivers door, but the other doors remain blocked, the cannot be opened manually. The ECU is dead, i tried to replace it with another one, but no success. I read something about doors double lock system, how can i open my car? is this the real problem? Please help me!