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TonyS · 11-07-2012, 04:18 AM

Are you sure it's the iDrive? My 335i does the same and I suspect it's the fuel pump turning on briefly to pressurise the fuel lines ready for engine start. VWs certainly do this as well.

11-07-2012, 04:18 AM	#2
TonyS Captain 84 Rep 729 Posts Drives: F30 335i Join Date: Jun 2012 Location: South West, UK iTrader: (0)	Are you sure it's the iDrive? My 335i does the same and I suspect it's the fuel pump turning on briefly to pressurise the fuel lines ready for engine start. VWs certainly do this as well.
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