Is this something new?
or did it just start happening?
If it's not new then it prolly is a safety thing.
If it is new, call the dealer and get an estimate to repair it. They can tell you what needs to be repaired.
2004 E60 530is, Delivered 12/12/03, TiSilver/LGrey, PP, SP,PS, PDC, ACC, FRS, Step, Xenons, clear bra, body colored rear inserts. (Retired, 1983 henna red 320is)
2004 Corvette Z06 Commemorative Edition