{"nhtsa_id":10009879,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2004-11-02","date":"2004-08-31","document_id":"0402","mfr_campaign":null,"replaces":null,"component":"ENGINE AND ENGINE COOLING:ENGINE","mfr_system":null,"summary":"VALVE COVER, DIAGNOSING OIL LEAKAGE FROM GASKETS. *TT","document":null,"url":"https://open.wenmarpro.com/bulletins/10009879","components":[{"id":"engine","name":"Engine","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"AUDI","model":"A4","year_from":1998,"year_to":2004,"match":"exact","vehicle_ids":["1998_audi_a4","1999_audi_a4","2000_audi_a4","2001_audi_a4","2002_audi_a4","2003_audi_a4","2004_audi_a4"]},{"make":"AUDI","model":"A6","year_from":1998,"year_to":2004,"match":"exact","vehicle_ids":["1998_audi_a6","1999_audi_a6","2000_audi_a6","2001_audi_a6","2002_audi_a6","2003_audi_a6","2004_audi_a6"]},{"make":"AUDI","model":"S4","year_from":2000,"year_to":2002,"match":"exact","vehicle_ids":["2000_audi_s4","2001_audi_s4","2002_audi_s4"]},{"make":"AUDI","model":"S4","year_from":2003,"year_to":2003,"match":null,"vehicle_ids":[]},{"make":"AUDI","model":"S4","year_from":2004,"year_to":2004,"match":"exact","vehicle_ids":["2004_audi_s4"]}],"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":[]}