Porsche Cayenne 2011 — technical service bulletin
Bulletin TI-91-11 · NHTSA communication 10043470 · issued Feb 15, 2012
Technical service bulletin
communication type
Power Train
component
2011
model years
3
vehicle entries
Official summary
Porsche: the transfer case can cause vibrations while driving due to the possible installation of defective clutch baskets. *pe
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.