Porsche 997 Warning Light Mystery: Common Fix Needed?

Hey there! I have some experience working on cars as a hobby mechanic. Had a similar issue with my 2014 Porsche 911 (and previously with a Cayman) last year. The warning light showed up right after I had my battery replaced. Took it to my trusted workshop, and it turned out to be exactly what you suspect, an incomplete system readiness check. They had to run a diagnostic reset and complete the readiness monitors. Cost me around 90€ for the whole thing, and it sorted the problem right out. What's your car's mileage and have you had any recent battery work done? This info would help me share more relevant details from my experience.

Thanks for sharing your experience! Mine's got 34513 KM on the clock, and I just had it serviced last month. Haven't had any battery work done recently, but that's interesting about the diagnostic reset fixing your issue. Did your mechanic mention how long the reset process took? I'm trying to figure out if I should plan for a quick fix or if I might need to leave it at the shop for a while.

Hey again! Thanks for the follow-up. Yeah, my 911 had about 45000 KM when I faced this issue. Since you mentioned your recent service, it's worth noting that sometimes these warning lights can pop up after routine maintenance if any sensor connections were disturbed. In my case, the actual diagnostic reset was pretty quick, maybe 30-45 minutes tops. But here's the thing: after the reset, my mechanic had me drive the car for about 20-25 minutes following a specific pattern (some city driving, then a bit of highway) to complete all the readiness monitors. They explained this was necessary to make sure everything was properly calibrated and communicating. So all in, I'd say plan for about 1.5-2 hours if you want to wait around. The good news is you probably won't need to leave it overnight or anything. My mechanic was pretty cool about it and walked me through the whole process. Honestly, it's not as complex as it sounds, just needs to be done right. Let me know how it goes when you get it checked out!

Thanks so much for the detailed explanation! That's really helpful to know about the drive cycle after the reset, definitely not something I would've thought about. I'll call my local Porsche specialist tomorrow and set up an appointment, mentioning what you've shared. It's a relief to hear it's likely just a straightforward fix and not something major. Great to have such knowledgeable in the community willing to share their experiences. I'll update the thread once I get it sorted out in case anyone else runs into the same issue. Thanks again for taking the time to explain everything!