I am not sure if this will help, but i had a similar problem with my E39 angel eyes. The globe is a small halogen 12v/10W if i remember correctly. Stealers wanted R135 or thereabouts, which i was not going to pay. Searched around with the blown bulb as sample and found a 5w halogen for something like R35, which i fitted and have no error messages (could be that the original was 5w and the replacement 10w - was a while back) Bought the replacement at a place in the Strand.