{"nhtsa_id":10174986,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2020-05-14","date":"2020-05-13","document_id":"SBW54-074REV","mfr_campaign":null,"replaces":null,"component":"EQUIPMENT","mfr_system":null,"summary":"Revision for Service Bulletin for Western Star 4700/5700 Pana-Pacific 540 Radio Controls Not Operating Normally. This bulletin replaces the version dated 03/25/2020. Pana-Pacific DEA540 radios (A22-74389-000, A22-77161-000) may cease to respond to volume control settings from the steering wheel switches or the controls on the radio faceplate, resulting in erratic volume control. This bulletin replaces the version dated March 26, 2020.The procedure to check the current software version of the radio is updated.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2020/MC-10174986-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2020/MC-10174986-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10174986","components":[{"id":"equipment","name":"Equipment and accessories","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"WESTERN STAR","model":"4700","year_from":2020,"year_to":2020,"match":"exact","vehicle_ids":["2020_western-star_4700"]},{"make":"WESTERN STAR","model":"5700","year_from":2020,"year_to":2020,"match":"exact","vehicle_ids":["2020_western-star_5700"]}],"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":[]}