Cooling system and water pump — the 9Y0 check that carries overmoderate
- V6 (3.6L / 3.0L turbo / 2.9L twin-turbo)
- V8 (4.8L / 4.0L twin-turbo)
Even with a nearly empty 2022 file, the generation's cooling pattern is worth pricing in on any 9Y0 Cayenne. The water pump is vacuum-operated; when it fails, coolant can migrate into the vacuum system and cause overheating or power loss, and because the front end must come off to reach it, later-life repairs run into the thousands. A separate 2020-era owner theme was the coolant changeover valve. There's no 2022-specific complaint cluster here — this is a maintenance heads-up, not a defect claim. Have a Porsche independent pressure-test the cooling system as part of any pre-purchase inspection.
Sources: Porsche-specialist and owner channel transcripts (9Y0/E3 buyer's guides; Tech-Tactics cooling-system walkthrough)