The systems sees bad connections and damaged filaments as 'blown' globes. Start checking and remaking all earths and contacts. Examin globes with a loope and check for damage or smoked out globes. Should fix it. System is auto reset once problems solved.
Good - Fast - Cheap: Pick any two.
E23 735i; E30 318i; E32 735iL (X 2 - 1 White and 1 Light Blue); E34 535i; E38 735iL; R50 Cooper; R55 Cooper Clubman.
E21 318i; E32 735iL; E34 535i; E38 730iL; E53 4.4i