Hi everyone, can any of you throw any pointers to my sliding roof problem,(twin) on my 525i tourer,93, they just will not open,?? the motors are working ok, the front one gives the sound like when its just closed, the rear one, the motor seems to be spinning ok, but neither will open, i have checked fuses etc they seem ok, is it possible it has relay just for opening, or whatever, any help would be gratefully received,