phil_e34540i

Hi just new to forum . Iv just bought a e34 540i £900 so i couldnt say no! Everything worked fine then today all but drivers window stopped working ,when buttons are pressed theres a small click from door card could it be that 3 windows have all failed at same time ? also thinking of ditching autobox however cars in mint cond no rust full service history totally original, would it be better to keep original box any suggestions apriciated .thanks