Jeep Wrangler 2022 — technical service bulletin
Bulletin 18-027-25 · NHTSA communication 11019435 · issued Jun 4, 2025
Technical service bulletin
communication type
Electrical System
component
2022
model years
1
vehicle entries
Official summary
"Flash: Powertrain Control Module (PCM) Updates Customers may experience the following: ● Engine knocking or ""pinging"" during extreme hot and dry ambient temperatures if only using 91 Octane fuel This bulletin involves reprogramming the PCM with the latest available software."
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.