Bmw 328i cold start problem
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2013 BMW 328I TSBs (230) Bulletin: SIB-63-11-14 Component: 121300 exterior lighting:headlights:high/low beam dimmer switch Summary: Bmw: on some vehicles, when starting, low beam, with 0552 option, would briefly flashes, due to a faulty led main light module that needs replacing. model 2008-14 f01, f02, f06, f07, f10, f12, f13, f25. *pe
If so, that indicates a problem with the relay that supplies the fuel pump. Specifically, with the signal that the relay needs from the engine control module that tells it that there are no problems and it is OK to activate the fuel pump. I have seen a few posts on BMW forums with problems in this area on 3-series.