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RecallGazette

Vehicle problems, recalls & safety intelligence

Porsche Cayenne 2010–2018technical service bulletin

Bulletin 122-A6Z3V-03 · NHTSA communication 10130121 · issued Feb 13, 2018

Technical service bulletin
communication type
Engine and Engine Cooling
component
2010–2018
model years
27
vehicle entries

Official summary

Subject: Intake valves and intake ports Information: Carboned-up valves in the engine can be reworked and cleaned using cleaning equipment. If there is a complaint about knocking combustion, e.g. during acceleration at high load, the condition of the intake valves and portsmust be checked before doing any other work. If the check shows that the intake valves and intake ports have carbon deposits and are dirty, they must be cleaned using the VAS 294 011 - cleaning unit. There should be no need to replace the components. Date of Introduction: The VAS 294 011 - cleaning unit can be ordered immedi

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.