Go to the NHTSA website and see if your vehicle's VIN is covered by the recall. It probably is. Here's what came up for mine:


Sep 27,2017


Manufacturer Recall NumberAH10


NHTSA Recall Number17V-576


Recall Status Recall Incomplete


Summary Fine hairline cracks can appear, after an extended period of use, on the filter flange of the fuel pump of the affected vehicles.


Safety Risk External aging exposure and oxidization reduces the component strength over an extended vehicle life. Additionally, fuel components intrude into the fuel filter flange material under pressure from the inside and cause tension within the component Porsche believes that the combination of both may, over time, eventually lead to the formation of small cracks, allowing fuel to seep from the fuel filter flange. Fuel leakage in the presence of an ignition source may cause a risk of fire


Remedy Vehicles affected by this action will be recalled to the workshop to have filter flanges exchanged with newer filter flanges and a protective film will be fitted to the parts.


Manufacturer's Notes


If the manufacturer has failed or is unable to remedy this safety recall for your vehicle in a timely manner, please contact the NHTSA Vehicle Safety Hotline at: 1-888-327-4236 or TTY: 1-800-424-9153 or file an online complaint with NHTSA.

 

Thanks so much for posting! I sent the post to a friend of mine who purchased my 2003 CTT about three years ago now. He texts back “I just move the Cayenne out of the garage yesterday because it seemed like there was a really strong gas odor!” He got it to Isringhausen Porsche and they’re looking at it, but seems likely the recall is the issue. He was going to take it to a local shop...that would have been costly.