{"nhtsa_id":10164401,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2019-09-05","date":"2019-08-30","document_id":"01-074","mfr_campaign":null,"replaces":null,"component":"VISIBILITY; EQUIPMENT","mfr_system":null,"summary":"Fix-As-Fail -“ C500, T440/T470, T800, W900 chassis HVAC Controllers may become unresponsive after rotating the temperature control knob quickly. HVAC Controllers with improved firmware are available to resolve this issue.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2019/MC-10164401-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2019/MC-10164401-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10164401","components":[{"id":"equipment","name":"Equipment and accessories","parent":null},{"id":"visibility","name":"Glass, wipers and mirrors","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"KENWORTH","model":"C500","year_from":2016,"year_to":2019,"match":null,"vehicle_ids":[]},{"make":"KENWORTH","model":"T440","year_from":2016,"year_to":2019,"match":null,"vehicle_ids":[]},{"make":"KENWORTH","model":"T800","year_from":2016,"year_to":2019,"match":null,"vehicle_ids":[]},{"make":"KENWORTH","model":"W900","year_from":2016,"year_to":2019,"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":[]}