{"nhtsa_id":11032318,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2026-05-06","date":"2026-04-30","document_id":"08-193-26","mfr_campaign":null,"replaces":null,"component":"ELECTRICAL SYSTEM","mfr_system":null,"summary":"Global Telematics Box Module (TBM) Firmware Over The Air (FOTA) Update From R5R1 To R5T Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must exhibit/set one or more of the following Diagnostic Trouble Codes (DTCs): ● B1560-11 - Cellular Antenna 1-Circuit Short To Ground. ● B1560-13 - Cellular Antenna 1-Circuit Open. ● B1561-11 - Cellular Antenna 2 Short To Ground. ● B1561-13 - Cellular Antenna 2-Circuit Open. ● B1562-14 - GPS Antenna-Circuit Short To Ground Or Open. ● B22A9-96 - ECU Internal Performance - Component Internal Failure. Customers may also experience the following: ● \"Uconnect Box Requires Service\" Message on the display screen. This bulletin provides information regarding the latest Firmware Over The Air (FOTA) update and provides the service technician an overview of the steps a customer will need to take to complete the update. The TBM software will be updated from R5R1 to R5T software level.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2026/MC-11032318-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2026/MC-11032318-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/11032318","components":[{"id":"electrical","name":"Electrical system","parent":null}],"codes":["B1560","B1561","B1562","B22A9"],"topics":[],"vehicles":[{"make":"JEEP","model":"CHEROKEE","year_from":2026,"year_to":2026,"match":"exact","vehicle_ids":["2026_jeep_cherokee"]},{"make":"JEEP","model":"WAGONEER S","year_from":2026,"year_to":2026,"match":"exact","vehicle_ids":["2026_jeep_wagoneer-s"]}],"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":[]}