Jeep Wrangler 2018 — technical service bulletin
Bulletin 0806320 · NHTSA communication 10223584 · issued Jun 13, 2020
Technical service bulletin
communication type
Electrical System
component
2018
model years
1
vehicle entries
Official summary
Flash: Security Gateway Module (SGW) Enhancements This bulletin involves reprogramming the SGW with the latest available software. The SGW in these vehicles was flashed with a calibration intended to be paired with a different software version.No symptoms will be observable to the customer. Diagnostic services will still work correctly (e.g. vehicle scan, DTC read, etc.). However, the vehicle security firewalls will be lacking.Diagnostic Trouble Codes (DTCs) may be present. The technician will receive no notification indicating there is any problem with the SGW.
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.