{"nhtsa_id":11031667,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2026-04-29","date":"2026-04-23","document_id":"08-173-26","mfr_campaign":null,"replaces":null,"component":"ELECTRICAL SYSTEM","mfr_system":null,"summary":"Security Gateway Module (SGW) Software Update The following software enhancements are available: ● Update for Diagnostic Trouble Code (DTC) U3033-00 - Control Module Security Certificate Missing/Invalid. NOTE: This DTC will not turn on the Malfunction Indicator Light (MIL) but is active or stored and cannot clear. ● If a FOTA message appears specifically directing the customer to service OR repeated FOTA events are not being completed, then a manual flash is required for the SGW update. ● SGW module is not responding to diagnostics and is showing offline. This bulletin involves inspecting and possibly updating the SGW to the latest software level in the case that the FOTA did not function.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2026/MC-11031667-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2026/MC-11031667-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/11031667","components":[{"id":"electrical","name":"Electrical system","parent":null}],"codes":["U3033"],"topics":[],"vehicles":[{"make":"JEEP","model":"GRAND WAGONEER","year_from":2025,"year_to":2025,"match":"exact","vehicle_ids":["2025_jeep_grand-wagoneer"]},{"make":"JEEP","model":"WAGONEER","year_from":2025,"year_to":2025,"match":"exact","vehicle_ids":["2025_jeep_wagoneer"]}],"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":[]}