Porsche Cayenne 2017–2018 — technical service bulletin
Bulletin No. 60-21-1 · NHTSA communication 10191623 · issued Apr 30, 2021
Technical service bulletin
communication type
Electrical System
component
2017–2018
model years
4
vehicle entries
Official summary
Porsche service campaign information for Workshop Campaign WMD1- Performing PCM Software Update.
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.