{"nhtsa_id":10150125,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2018-12-03","date":"2013-03-01","document_id":"640111","mfr_campaign":null,"replaces":null,"component":"VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM; EQUIPMENT","mfr_system":null,"summary":"\"Whistling Noise Heard from the Center Fresh-Air Vent During Heating. A whistling noise is heard from the center fresh-air vents. The noise can be heard during the warm up phase (3 to 10 mins) after the heating system is first activated, with low outside temperatures and the center vents stratification adjustment wheel is turned to the \"\"red\"\" position. Note: This is independent of the air distribution setting, but a lower fan speed is required. CAUSE Unfavorable air flow against the mixing flaps in the upper distribution housing\"","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2013/MC-10150125-9999.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2013/MC-10150125-0001.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10150125","components":[{"id":"equipment","name":"Equipment and accessories","parent":null},{"id":"visibility","name":"Glass, wipers and mirrors","parent":null},{"id":"hvac","name":"Heating and air conditioning","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"BMW","model":"528I","year_from":2011,"year_to":2013,"match":"exact","vehicle_ids":["2011_bmw_528i","2012_bmw_528i","2013_bmw_528i"]},{"make":"BMW","model":"535I","year_from":2011,"year_to":2013,"match":"exact","vehicle_ids":["2011_bmw_535i","2012_bmw_535i","2013_bmw_535i"]},{"make":"BMW","model":"535I GRAN TURISMO","year_from":2010,"year_to":2012,"match":"base","vehicle_ids":["2010_bmw_535i","2011_bmw_535i","2012_bmw_535i"]},{"make":"BMW","model":"535I US","year_from":2011,"year_to":2011,"match":"base","vehicle_ids":["2011_bmw_535i"]},{"make":"BMW","model":"550I","year_from":2011,"year_to":2013,"match":"exact","vehicle_ids":["2011_bmw_550i","2012_bmw_550i","2013_bmw_550i"]},{"make":"BMW","model":"550I GRAN TURISMO","year_from":2010,"year_to":2012,"match":"base","vehicle_ids":["2010_bmw_550i","2011_bmw_550i","2012_bmw_550i"]},{"make":"BMW","model":"740I","year_from":2012,"year_to":2013,"match":"exact","vehicle_ids":["2012_bmw_740i","2013_bmw_740i"]},{"make":"BMW","model":"740I US","year_from":2011,"year_to":2011,"match":"base","vehicle_ids":["2011_bmw_740i"]},{"make":"BMW","model":"740LI","year_from":2011,"year_to":2013,"match":"exact","vehicle_ids":["2011_bmw_740li","2012_bmw_740li","2013_bmw_740li"]},{"make":"BMW","model":"750I","year_from":2010,"year_to":2013,"match":"exact","vehicle_ids":["2010_bmw_750i","2011_bmw_750i","2012_bmw_750i","2013_bmw_750i"]},{"make":"BMW","model":"750LI","year_from":2010,"year_to":2013,"match":"exact","vehicle_ids":["2010_bmw_750li","2011_bmw_750li","2012_bmw_750li","2013_bmw_750li"]},{"make":"BMW","model":"760LI","year_from":2010,"year_to":2012,"match":"exact","vehicle_ids":["2010_bmw_760li","2011_bmw_760li","2012_bmw_760li"]},{"make":"BMW","model":"ACTIVE HYBRID 5","year_from":2012,"year_to":2013,"match":"exact","vehicle_ids":["2012_bmw_activehybrid-5","2013_bmw_activehybrid-5"]},{"make":"BMW","model":"ACTIVE HYBRID 7","year_from":2013,"year_to":2013,"match":null,"vehicle_ids":[]},{"make":"BMW","model":"M5","year_from":2013,"year_to":2013,"match":"exact","vehicle_ids":["2013_bmw_m5"]}],"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":[]}