Jeep Grand Cherokee 2021–2023 — technical service bulletin
Bulletin 08-237-25 · NHTSA communication 11021823 · issued Aug 5, 2025
Technical service bulletin
communication type
Electrical System
component
2021–2023
model years
9
vehicle entries
Official 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 th
Vehicles covered
What a TSB means. Technical service bulletins are repair guidance manufacturers send to dealers — they are not recalls, and repairs are not automatically free (warranty extensions are an exception worth checking). The full document is available via NHTSA’s vehicle lookup.