{"nhtsa_id":10039764,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2011-08-10","date":"2011-06-01","document_id":"SB-11-04-11","mfr_campaign":null,"replaces":null,"component":"ENGINE AND ENGINE COOLING:ENGINE:GASOLINE:BELTS AND ASSOCIATED PULLEYS","mfr_system":null,"summary":"BMW: A NOISE IS HEARD FROM THE ENGINE WHILE RUNNING. THE ALTERNATOR DRIVE BELT TENSIONER IS LOOSE AND/OR SHOWS WEAR. *RM","document":null,"url":"https://open.wenmarpro.com/bulletins/10039764","components":[{"id":"engine","name":"Engine","parent":null},{"id":"drive-belt","name":"Drive belts","parent":"engine"}],"codes":[],"topics":[],"vehicles":[{"make":"BMW","model":"7 SERIES","year_from":2007,"year_to":2008,"match":null,"vehicle_ids":[]},{"make":"BMW","model":"7-SERIES","year_from":2009,"year_to":2011,"match":null,"vehicle_ids":[]},{"make":"BMW","model":"X6","year_from":2008,"year_to":2011,"match":"exact","vehicle_ids":["2008_bmw_x6","2009_bmw_x6","2010_bmw_x6","2011_bmw_x6"]}],"as_of":"2026-10-19","note":"A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.","attribution":[]}