{"nhtsa_id":11030206,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2026-03-25","date":"2026-03-17","document_id":"08-113-26","mfr_campaign":null,"replaces":null,"component":"ELECTRICAL SYSTEM","mfr_system":null,"summary":"Flash: Global Telematics Box Module (TBM) Updates **Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must SYMPTOM: exhibit/set one or more of the following Diagnostic Trouble Codes (DTCs): ● B22A9-96 - ECU Internal Performance-Component Internal Failure. ● B1560-11 - Cellular Antenna 1-Circuit Short To Ground. ● B1560-13 - Cellular Antenna 1-Circuit Open. ● B1561-11 - Cellular Antenna 2-Circuit Short To Ground. ● B1561-13 - Cellular Antenna 2-Circuit Open. ● B1562-14 - GPS Antenna-Circuit Short To Ground Or Open.** The customer may experience the following: ● Uconnect Box requires service message at start up on the display screen. This bulletin involves reprogramming the TBM with the latest available software.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2026/MC-11030206-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2026/MC-11030206-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/11030206","components":[{"id":"electrical","name":"Electrical system","parent":null}],"codes":["B1560","B1561","B1562","B22A9"],"topics":[],"vehicles":[{"make":"JEEP","model":"GRAND CHEROKEE","year_from":2024,"year_to":2024,"match":"exact","vehicle_ids":["2024_jeep_grand-cherokee"]},{"make":"JEEP","model":"GRAND CHEROKEE 4XE","year_from":2024,"year_to":2024,"match":"base","vehicle_ids":["2024_jeep_grand-cherokee"]},{"make":"JEEP","model":"GRAND CHEROKEE L","year_from":2024,"year_to":2024,"match":"exact","vehicle_ids":["2024_jeep_grand-cherokee-l"]}],"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":[]}