{"nhtsa_id":10010603,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2004-12-02","date":"2004-10-13","document_id":"TC04016","mfr_campaign":null,"replaces":null,"component":"STEERING:HYDRAULIC POWER ASSIST:HOSE, PIPING, AND CONNECTIONS","mfr_system":null,"summary":"LIMITED SERVICE CAMPAIGN 40H TO REPLACE THE POWER STEERING FLUID RETURN HOSES. TECHNICAL INSTRUCTIONS; DEALERSHIP AND OWNER NOTIFICATION. *TT","document":null,"url":"https://open.wenmarpro.com/bulletins/10010603","components":[{"id":"steering","name":"Steering","parent":null},{"id":"power-steering","name":"Power steering","parent":"steering"}],"codes":[],"topics":[],"vehicles":[{"make":"TOYOTA","model":"SIENNA","year_from":2004,"year_to":2005,"match":"exact","vehicle_ids":["2004_toyota_sienna","2005_toyota_sienna"]}],"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":[]}