{"nhtsa_id":10206086,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2022-01-06","date":"2021-12-06","document_id":"34-091","mfr_campaign":null,"replaces":null,"component":"ELECTRICAL SYSTEM; EXTERIOR LIGHTING","mfr_system":null,"summary":"Non-Safety Campaign – An incorrectly set VECU software parameter is causing the running lamps to be inactive for certain, US registered, model year 2021 579 chassis. The parameter can be correctly set by reflashing the VECU with updated software.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2021/MC-10206086-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2021/MC-10206086-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10206086","components":[{"id":"electrical","name":"Electrical system","parent":null},{"id":"lighting","name":"Lighting","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"PETERBILT","model":"579","year_from":2021,"year_to":2021,"match":"exact","vehicle_ids":["2021_peterbilt_579"]}],"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":[]}