Jeep Grand Wagoneer 2022 — technical service bulletin
Bulletin 0804422 · NHTSA communication 10220783 · issued Mar 8, 2022
Technical service bulletin
communication type
Electrical System
component
2022
model years
1
vehicle entries
Official summary
Flash: Air Suspension Control Module (ASCM) This bulletin involves reprogramming the ASCM with the latest available software.The ASCM software update is being released as a generic release to support ASCM replacement only in service.
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.