Jeep Grand Wagoneer 2022 — technical service bulletin
Bulletin 0815922 · NHTSA communication 10225422 · issued Aug 19, 2022
Technical service bulletin
communication type
Electrical System
component
2022
model years
2
vehicle entries
Official summary
Flash: Seat Massage Module (SMM) Updates This bulletin involves reprogramming the SMM with the latest software available. The customer may describe the following: Either one or both massage seats inoperative after the battery was charged from a full drain state.
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.