Two problems related to timing tensioner have been reported for the 2009 BMW 328. The most recently reported issues are listed below.
Takata recall: just cant believe my car just went dead while driving. There have been issues with the fuel pump but nobody is making people aware of this so it can get fixed. It was really scary . Belt tensioner was replaced from BMW in 2014. Then belt tensioner goes bad again in 2016. Steering super tight ,just replaced power steering pump 10 months ago. .
Bolt securing serpentine belt tensioner assembly against engine block broke off . The belt tensioner assembly also broke. The serpentine belt completely came off rendering vehicle undriveable. Happened when vehicle was stationary. Vehicle was towed to repair shop.