{"nhtsa_id":10148022,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2018-11-13","date":"2014-09-01","document_id":"122514","mfr_campaign":null,"replaces":null,"component":"ELECTRICAL SYSTEM","mfr_system":null,"summary":"N63T: Improvements to Bosch Spark Plug. Various engine performance symptoms could occur if the spark plug insulator becomes damaged: * The Service Engine Soon (MIL) may be on with rough running and misfire fault(s) stored. * Intermittent performance or rough running without a relevant DME fault stored. The spark plug insulator could be damaged in cases of combustion faults such as misfiring, ignition knock or super knocking conditions.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2014/MC-10148022-9999.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2014/MC-10148022-0001.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10148022","components":[{"id":"electrical","name":"Electrical system","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"BMW","model":"550I","year_from":2011,"year_to":2014,"match":"exact","vehicle_ids":["2011_bmw_550i","2012_bmw_550i","2013_bmw_550i","2014_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":"650I","year_from":2012,"year_to":2014,"match":"exact","vehicle_ids":["2012_bmw_650i","2013_bmw_650i","2014_bmw_650i"]},{"make":"BMW","model":"750I","year_from":2009,"year_to":2014,"match":"exact","vehicle_ids":["2009_bmw_750i","2010_bmw_750i","2011_bmw_750i","2012_bmw_750i","2013_bmw_750i","2014_bmw_750i"]},{"make":"BMW","model":"750LI","year_from":2009,"year_to":2014,"match":"exact","vehicle_ids":["2009_bmw_750li","2010_bmw_750li","2011_bmw_750li","2012_bmw_750li","2013_bmw_750li","2014_bmw_750li"]},{"make":"BMW","model":"X5","year_from":2014,"year_to":2015,"match":"exact","vehicle_ids":["2014_bmw_x5","2015_bmw_x5"]}],"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":[]}