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      01-07-2013, 12:38 AM   #2
Ben Lee
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Drives: BMW F10 528i and BMW X3
Join Date: Jun 2011
Location: Indonesia

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Mine made a sound too when it start up, a kind of "clicking" sound, but not loud enough to be intrusive. Can hear it is there though and last for about 3-4 mintues and gone. My dealer say it is normal because the turbo chargers are firing up and all 5 series are like that. I am also wondering why.