Porsche Cayenne 2013–2014 — technical service bulletin
Bulletin 122-J4H9M-12 · NHTSA communication 10125210 · issued Nov 8, 2017
Technical service bulletin
communication type
Engine
component
2013–2014
model years
2
vehicle entries
Official summary
Situation: Cayenne Diesel vehicles were equipped with undisclosed Auxiliary Emission Control Devices which are not permitted by emissions regulations. Action Required: Install updated engine control module (DME) software, transmission control module (Tiptronic) software and hardware to bring affected vehicles into regulatory compliance.
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.