Porsche Cayenne 2018–2019 — technical service bulletin
Bulletin No. 71-20-1 · NHTSA communication 10219457 · issued Aug 29, 2022
Technical service bulletin
communication type
Equipment
component
2018–2019
model years
2
vehicle entries
Official summary
Technical information for WLD4 - replacing hose for positive crankcase ventilation.
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.