Jeep Wrangler 2019 — technical service bulletin
Bulletin 0804621 · NHTSA communication 10220968 · issued Mar 23, 2021
Technical service bulletin
communication type
Electrical System
component
2019
model years
1
vehicle entries
Official summary
UGQ Radio Enhancements This bulletin involves inspecting the software level to see if the radio needs one or two USB flash drive(s) to update the radio software level to 39.2. It is critical that every step of the bulletin is reviewed and performed properly. If any steps are missed, the radio can be damaged and may need to be replaced. Customers may experience one or more of the following:Radio screen turns black when the ignition is on. The radio resets. Audio sometimes inoperative for the entire ignition cycle. Language setting reverting from customer set language to Italian language. Messag
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.