Porsche Cayenne 2015–2018 — technical service bulletin
Bulletin 122-K2U8K-09 · NHTSA communication 10165158 · issued Aug 29, 2019
Technical service bulletin
communication type
Electrical System
component
2015–2018
model years
8
vehicle entries
Official summary
Instructions for reprogramming the High Voltage Control Unit on Cayenne S E-Hybrid models in the event of a red or yellow hybrid warning message.
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.