{"nhtsa_id":11021823,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2025-08-13","date":"2025-08-05","document_id":"08-237-25","mfr_campaign":null,"replaces":null,"component":"ELECTRICAL SYSTEM","mfr_system":null,"summary":"Not applicable to vehicles built for US market. R1H Radio U33.43 USB Software Update Customers may experience one or more of the following: ● Wi-fi Software update pop-up is being triggered in non connected vehicles. ● Radio freezes and then restarts. ● Head Unit (HU) freezes and then restarts. ● HU is taking more than one minute to start after starting the engine. ● System displays blank screen in E-Hybrid tab when user switched to dark theme mode. This bulletin involves inspecting and if required, updating the radio software level to U33.43. Depending on the radio’s current software level the radio may need a one or two step USB update.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2025/MC-11021823-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2025/MC-11021823-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/11021823","components":[{"id":"electrical","name":"Electrical system","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"JEEP","model":"GRAND CHEROKEE","year_from":2021,"year_to":2023,"match":"exact","vehicle_ids":["2021_jeep_grand-cherokee","2022_jeep_grand-cherokee","2023_jeep_grand-cherokee"]},{"make":"JEEP","model":"GRAND CHEROKEE 4XE","year_from":2021,"year_to":2023,"match":"base","vehicle_ids":["2021_jeep_grand-cherokee","2022_jeep_grand-cherokee","2023_jeep_grand-cherokee"]},{"make":"JEEP","model":"GRAND CHEROKEE L","year_from":2021,"year_to":2023,"match":"exact","vehicle_ids":["2021_jeep_grand-cherokee-l","2022_jeep_grand-cherokee-l","2023_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":[]}