{"nhtsa_id":10018857,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2006-01-19","date":"2006-01-30","document_id":"0506","mfr_campaign":null,"replaces":"0506","component":"ENGINE AND ENGINE COOLING:COOLING SYSTEM:RADIATOR ASSEMBLY","mfr_system":null,"summary":"WARRANTY COVERAGE ENHANCEMENT - ISOLATED REPORTS FROM EXTREME COLD CLIMATE AREAS THAT THE RADIATOR MAY CRACK AT THE BASE OF ONE OR MORE OF THE RADIATOR TUBES, RESULTING IN COOLANT LEAKAGE - CUSTOMER SUPPORT PROGRAM. *TT","document":null,"url":"https://open.wenmarpro.com/bulletins/10018857","components":[{"id":"engine","name":"Engine","parent":null},{"id":"cooling-system","name":"Cooling system","parent":"engine"},{"id":"radiator","name":"Radiator","parent":"engine"}],"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":[]}