Jeep Grand Cherokee 2021–2023 — technical service bulletin
Bulletin 08-266-25 · NHTSA communication 11022009 · issued Aug 16, 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 comment on one or more of the following: ● WI-FI Software update pop up is being triggered in non connected vehicles. ● Vehicle Forward Collision Warning must have two options: OFF/ Warning + Active Braking. ● Temperature shows at upper left and right of center display highlights opposite side of what temperature hard switch is pressed. Affects RHD only. ● With key on and radio on, The radio display freezes then restarts. ● Radio is taking more than one minute to start after starting the engine.
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.