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TonyS · 11-07-2012, 05:18 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, 05:18 AM	#2
TonyS Second Lieutenant Drives: F30 335i Join Date: Jun 2012 Location: West Sussex, UK Posts: 221 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.