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      11-07-2012, 05:18 AM   #2
TonyS
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United Kingdom
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Drives: F30 335i
Join Date: Jun 2012
Location: South West

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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.