Trouble with central locking
I have a 1991 318i 4 door. Yesterday when I went to lock it on the driver's door, it wouldn't turn. After fiddling with it, it finally turned over and locked the doors however it wouldnt allow the key to turn back vertically to take it out. The cylinder would stay horizontal not allowing me to either unlock from the drivers door or the trunk or pasenger door. I eventually got the cylinder upright but cannot unlock now fromt eh drivers side. Has anyone had any problems like this before and if so, how did you fix it? I am not new to cars or mechanical work at all, however I am new to BMW's. Any help is appreciated.