{"nhtsa_id":10227631,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2022-12-12","date":"2022-11-02","document_id":"FSB.0023","mfr_campaign":null,"replaces":null,"component":"FUEL SYSTEM, GASOLINE; ELECTRICAL SYSTEM","mfr_system":null,"summary":"Instructed users of Peterbilt 520 vehicles equipped with Hexagon® Agility® compressed natural gas (CNG) fuel systems that the secondary ignition switch used for service purposes is not integrated with the Blue iQ? system and cannot be used for vehicle operation and troubleshooting.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2022/MC-10227631-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2022/MC-10227631-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10227631","components":[{"id":"electrical","name":"Electrical system","parent":null},{"id":"fuel-system","name":"Fuel system","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"AGILITY FUEL SYSTEMS","model":"AGILITY FUEL SYSTEMS","year_from":null,"year_to":null,"match":null,"vehicle_ids":[]}],"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":[]}