2010 tdi......Just got back from 2 hours of 80 mph driving on route 95 I turned off the engine and no fan. Just went back outside and checked for you and no fan on. Put the key in the ignition, turned on the electronics and not the engine and no fan. I have read similar posts on here about fans staying on for about 10 - 15 minutes after engine was turned off. You may want to do some further searching on here.
Good Luck
Good Luck