Jeep Grand Cherokee 2023 — technical service bulletin
Bulletin 08-107-25 · NHTSA communication 11017006 · issued Apr 8, 2025
Technical service bulletin
communication type
Electrical System
component
2023
model years
3
vehicle entries
Official summary
"Flash: Trailer Tow Module(TTM) Updates Customers may comment on one or more of the following: ● If the vehicle is traveling at less than 5 kph (3 mph) and the brake pedal is pressed, then both turn lights will flash for two milliseconds. ● If the vehicle is traveling at less than 5 kph (3 mph) and one turn light is activated, then the opposite turn light will flash for 20 milliseconds This bulletin involves updating the TTM with the latest available software."
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.