Hey there! I actually had a similar issue with my '09 Porsche Cayman S last summer. The fuel door problem was definitely a headache. In my case, it turned out to be a faulty actuator linkage in the fuel door mechanism. Had it checked at a certified Porsche workshop, and they found that the linkage was completely stuck, which was triggering the check engine light and other warnings. It was a moderate repair job, not super serious but definitely needed fixing to avoid bigger problems down the line. The mechanic showed me how the old linkage had corroded and wasn't responding to the release signal anymore. Fixed it in about half a day. If you're in this situation, I'd strongly suggest finding a Porsche certified mechanic. This isn't something you want a general shop messing with, as these systems are pretty specific to Porsche models. Learned that lesson the hard way before finding my current mechanic. Let me know if you need any other details about what to expect with the repair.

Thanks for sharing your experience! That definitely sounds similar to what I'm dealing with. Would you mind telling me roughly how much you ended up paying for the repair? Also, curious if you've had any other issues pop up since getting it fixed?

Hey again! Happy to help update you on my Cayman S situation. Since you asked, after getting it fixed at the Porsche certified shop, I paid 210€ for the linkage repair, and I'm glad to report it was totally worth it. The tank flap has been working perfectly ever since, no more fighting with it in front of everyone at the gas station (talk about embarrassing!). And nope, absolutely zero issues since then, the check engine light stayed off and everything's been working like a charm. It's actually a pretty straightforward fix when you've got the right people doing it. Looking back, I should've done it sooner instead of trying to live with it! If you decide to get it fixed, I bet you'll have the same good outcome. These Porsches are solid cars when you maintain them properly. Just make sure you go to someone who really knows their stuff with these models!

Thanks so much for all the info! I actually went ahead and got it fixed yesterday at a Porsche certified shop. You were spot on about the actuator linkage, that's exactly what it was! Ended up paying around 250€, which wasn't as bad as I'd feared. The mechanic I found was great, really took the time to explain everything and even showed me the old part. The whole thing only took about 4 hours, and now my fuel door opens perfectly. Check engine light is gone too, which is a huge relief. Honestly, I feel kind of silly for putting it off for so long. Should've asked for advice earlier! But at least it's all sorted now, and I learned my lesson about using certified mechanics for these specialized repairs. Really appreciate everyone's help on this. Nothing better than getting advice from other Porsche owners who've been there before!