Porsche Cayenne 2020–2021 — technical service bulletin
Bulletin WNN1 · NHTSA communication 10237485 · issued May 25, 2023
Technical service bulletin
communication type
Electrical System
component
2020–2021
model years
4
vehicle entries
Official summary
Porsche intranet posting with information on workshop campaign WNN1 - supplying drivers manual for Porsche Mobile Charger
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.