{"nhtsa_id":11038360,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2026-10-08","date":"2026-09-09","document_id":"SB_796","mfr_campaign":null,"replaces":null,"component":"UNKNOWN OR OTHER","mfr_system":null,"summary":"This bulletin provides a procedure to update Telematics Control Unit (TCU) devices in Pierce custom chassis apparatus equipped with Command Zone and with TCU software version 7.4.3. Installation of new TCU webpage and MQTT security certificates is accomplished as part of this procedure. This update is highly recommended for TCU devices currently operating with all software versions prior to 7.4.3.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2026/MC-11038360-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2026/MC-11038360-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/11038360","components":[],"codes":[],"topics":[],"vehicles":[{"make":"FRONTLINE","model":"ENCORE RESCUE","year_from":2018,"year_to":2019,"match":null,"vehicle_ids":[]},{"make":"FRONTLINE","model":"IMPEL","year_from":2022,"year_to":2022,"match":null,"vehicle_ids":[]},{"make":"FRONTLINE","model":"VELOCITY","year_from":2022,"year_to":2022,"match":null,"vehicle_ids":[]},{"make":"PIERCE","model":"75' ALUMINUM LADDER","year_from":2003,"year_to":2009,"match":null,"vehicle_ids":[]},{"make":"PIERCE","model":"ARROW","year_from":2002,"year_to":2008,"match":null,"vehicle_ids":[]},{"make":"PIERCE","model":"ARROW","year_from":2013,"year_to":2013,"match":null,"vehicle_ids":[]},{"make":"PIERCE","model":"ARROW XT","year_from":2002,"year_to":2026,"match":null,"vehicle_ids":[]},{"make":"PIERCE","model":"COMMERCIAL","year_from":2002,"year_to":2013,"match":null,"vehicle_ids":[]},{"make":"PIERCE","model":"COMMERCIAL","year_from":2015,"year_to":2018,"match":null,"vehicle_ids":[]},{"make":"PIERCE","model":"COMMERCIAL","year_from":2023,"year_to":2024,"match":null,"vehicle_ids":[]},{"make":"PIERCE","model":"CONTENDER BIG BLOCK","year_from":2010,"year_to":2012,"match":null,"vehicle_ids":[]},{"make":"PIERCE","model":"CUSTOM CHASSIS","year_from":2002,"year_to":2006,"match":null,"vehicle_ids":[]},{"make":"PIERCE","model":"CUSTOM CONTENDER","year_from":2002,"year_to":2011,"match":null,"vehicle_ids":[]},{"make":"PIERCE","model":"DASH","year_from":2002,"year_to":2020,"match":null,"vehicle_ids":[]},{"make":"PIERCE","model":"DASH CF","year_from":2007,"year_to":2022,"match":null,"vehicle_ids":[]},{"make":"PIERCE","model":"ENFORCER","year_from":2002,"year_to":2026,"match":null,"vehicle_ids":[]},{"make":"PIERCE","model":"F550","year_from":2022,"year_to":2022,"match":null,"vehicle_ids":[]},{"make":"PIERCE","model":"FREIGHTLINER","year_from":2016,"year_to":2018,"match":null,"vehicle_ids":[]},{"make":"PIERCE","model":"FREIGHTLINER","year_from":2020,"year_to":2024,"match":null,"vehicle_ids":[]},{"make":"PIERCE","model":"IMPEL","year_from":2002,"year_to":2026,"match":null,"vehicle_ids":[]},{"make":"PIERCE","model":"INTERNATIONAL","year_from":2020,"year_to":2024,"match":null,"vehicle_ids":[]},{"make":"PIERCE","model":"KENWORTH","year_from":2003,"year_to":2003,"match":null,"vehicle_ids":[]},{"make":"PIERCE","model":"LADDER AND PLATFORM","year_from":2016,"year_to":2022,"match":null,"vehicle_ids":[]},{"make":"PIERCE","model":"LANCE","year_from":2002,"year_to":2010,"match":null,"vehicle_ids":[]},{"make":"PIERCE","model":"M2-106","year_from":2022,"year_to":2022,"match":null,"vehicle_ids":[]},{"make":"PIERCE","model":"M2-112","year_from":2022,"year_to":2022,"match":null,"vehicle_ids":[]},{"make":"PIERCE","model":"PIERCE","year_from":2002,"year_to":2002,"match":null,"vehicle_ids":[]},{"make":"PIERCE","model":"PIERCE","year_from":2009,"year_to":2010,"match":null,"vehicle_ids":[]},{"make":"PIERCE","model":"PUC PUMPER","year_from":2003,"year_to":2009,"match":null,"vehicle_ids":[]},{"make":"PIERCE","model":"PUMPER","year_from":2015,"year_to":2016,"match":null,"vehicle_ids":[]},{"make":"PIERCE","model":"PUMPER","year_from":2019,"year_to":2019,"match":null,"vehicle_ids":[]},{"make":"PIERCE","model":"QUANTUM","year_from":2002,"year_to":2024,"match":null,"vehicle_ids":[]},{"make":"PIERCE","model":"REAR MOUNT PUMPER","year_from":2003,"year_to":2009,"match":null,"vehicle_ids":[]},{"make":"PIERCE","model":"SABER","year_from":2002,"year_to":2025,"match":null,"vehicle_ids":[]},{"make":"PIERCE","model":"TANKER","year_from":2015,"year_to":2016,"match":null,"vehicle_ids":[]},{"make":"PIERCE","model":"TANKER","year_from":2019,"year_to":2019,"match":null,"vehicle_ids":[]},{"make":"PIERCE","model":"VELOCITY","year_from":2002,"year_to":2026,"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":[]}