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      01-23-2013, 10:38 PM   #4
Private First Class
Drives: 2011 335i XDrive
Join Date: Apr 2007
Location: Cowtown

Posts: 145
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Originally Posted by Pete Schweaty View Post
The sound on shutdown is the electric water pump. It flows coolant for a few minutes after you shut down to cool the turbos.
The sound lasts not more than 10 seconds. I've done some google searching....seems like it might be the hvac system shuttering the ducts closed????

Any other ideas? Sounds like the the 5 series also has a similar deal.
2011 BMW 335i XDrive Msport (auto)
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