{"nhtsa_id":10010539,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2004-12-01","date":"2004-10-01","document_id":"0403","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/10010539","components":[{"id":"engine","name":"Engine","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"VOLKSWAGEN","model":"PASSAT","year_from":1998,"year_to":2004,"match":"exact","vehicle_ids":["1998_volkswagen_passat","1999_volkswagen_passat","2000_volkswagen_passat","2001_volkswagen_passat","2002_volkswagen_passat","2003_volkswagen_passat","2004_volkswagen_passat"]}],"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":[]}