{"nhtsa_id":10181978,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2020-11-05","date":"2020-10-29","document_id":"Circular24GBREV1","mfr_campaign":null,"replaces":null,"component":"ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:MANIFOLD/HEADER/MUFFLER/TAIL PIPE; ELECTRICAL SYSTEM:SOFTWARE","mfr_system":null,"summary":"Volkswagen is providing an Engine and Transmission Control Module (ECM/TCM) software update to address elevated tailpipe emissions that were found during vehicle testing. This software will also improve drivability and provide other diagnostic improvements. Update to vehicle count and updated claiming instructions due to additional criteria X4.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2020/MC-10181978-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2020/MC-10181978-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10181978","components":[{"id":"electrical","name":"Electrical system","parent":null},{"id":"engine","name":"Engine","parent":null},{"id":"exhaust-emissions","name":"Exhaust and emissions","parent":null},{"id":"exhaust-pipe","name":"Exhaust manifold, pipes and muffler","parent":"exhaust-emissions"},{"id":"software","name":"Software","parent":"electrical"}],"codes":[],"topics":[],"vehicles":[{"make":"VOLKSWAGEN","model":"TIGUAN","year_from":2018,"year_to":2020,"match":"exact","vehicle_ids":["2018_volkswagen_tiguan","2019_volkswagen_tiguan","2020_volkswagen_tiguan"]}],"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":[]}