Porsche Cayenne 2018–2021 — technical service bulletin
Bulletin WMJ9 · NHTSA communication 10217881 · issued Jun 13, 2022
Technical service bulletin
communication type
Electrical System
component
2018–2021
model years
7
vehicle entries
Official summary
Porsche intranet posting with information on Workshop Campaign WMJ9 - reprograming control unit gateway
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.