{"nhtsa_id":10157438,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2019-04-08","date":"2013-09-16","document_id":"Update Bulletin","mfr_campaign":null,"replaces":null,"component":"ENGINE AND ENGINE COOLING","mfr_system":null,"summary":"UPDATE Technical Bulletin (Coolant Flush issues): This update has been proactively released to ensure proper coolant quality and performance of the engine cooling system. During the hot testing at the engine production facility, certain 1.8T engines may have been contaminated with poor quality coolant. Residual poor quality coolant may have been transferred to the engine cooling system during vehicle production. The production solution to this issue was coolant quality correction at engine facility.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2013/MC-10157438-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2013/MC-10157438-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10157438","components":[{"id":"engine","name":"Engine","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"VOLKSWAGEN","model":"PASSAT","year_from":2014,"year_to":2014,"match":"exact","vehicle_ids":["2014_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":[]}